CN121056675A - A display device and a data transmission method based on a high-definition multimedia interface. - Google Patents

Abstract

This application provides a display device and a data transmission method based on a high-definition multimedia interface. The display device can, through multiple negotiations with an external device, drive the external device to confirm a set of playback modes commonly supported by both, and drive the external device to send matching external data to the display device according to the target playback mode set determined by the display device, thereby improving the compatibility between the display device's playback modes and the external data. Furthermore, based on the characteristic that the external device can send matching external data to the display device through multiple negotiations, the frequency of user operations during data transmission can be effectively reduced.

Description

A display device and a data transmission method based on a high-definition multimedia interface.

Technical Field

This application relates to the field of display device technology, and in particular to a display device and a data transmission method based on a high-definition multimedia interface.

Background Technology

Display devices can connect to external media resource devices via HDMI interfaces to play external data transmitted from those devices, thus meeting the user's viewing needs. Users can adjust the playback parameters of the media resources on the display device, allowing the device to adjust the playback mode and play external data according to their preferences.

After the user adjusts the playback parameters for playing media assets, the display device sends an EDID to the media resource device via the HDMI interface to inform the media resource device of the external data playback modes supported by the display device. However, after reading the EDID sent by the display device, the media resource device does not proactively send the corresponding external data playback parameters according to the playback mode indicated by the EDID. This requires the user to manually adjust the playback parameters of the external data on the media resource device side to ensure that the playback parameters of the external data support the playback mode indicated by the EDID.

Therefore, in scenarios where a display device is connected to an external media resource device via an HDMI interface and plays external data sent by the media resource device, the user needs to adjust the playback parameters of the external data multiple times on both the display device and the media resource device, resulting in frequent user operations and affecting the user experience.

Summary of the Invention

This application provides a display device and a high-definition multimedia interface data transmission method to solve the problem that users need to operate frequently because external devices cannot actively send data in a compliant format based on the extended display identifier data of the display device.

In a first aspect, embodiments of this application provide a display device, including a display, a high-definition multimedia interface (HDMI), and a controller. The HDMI is used to connect the display device to an external device, enabling the display device to receive content from the external device and display the content on the display.

The controller is configured as follows:

When the display device is connected to an external device via a high-definition multimedia interface, in response to a selection instruction for at least one of the following controls: a high-definition multimedia interface version control, a high frame rate switch control, a wide viewing angle switch control, and an adaptive frame rate switch control, a first set of playback modes is determined. The first set of playback modes includes at least one playback mode supported by the display device.

Once a first set of playback modes is determined, the initial extended display identifier data of the display device is modified to the first extended display identifier data based on the first set of playback modes. The first extended display identifier data is used to characterize the first set of playback modes.

The level of the hot-plug pin is adjusted according to a preset transmission protocol so that an external device can read the first extended display identifier data.

Upon receiving second extended display identifier data, confirmed by the first extended display identifier data, from an external device, a target playback mode set is determined from the second playback mode set based on preset rules. The second extended display identifier data is used to characterize at least one second playback mode set jointly supported by the external device and the display device.

The first extended display identifier data is modified to the third extended display identifier data based on the target playback mode set.

The level of the hot-plug pin is adjusted according to the preset transmission protocol so that the external device can read the third extended display identifier data.

Upon receiving external data from an external device, the control display plays the media asset corresponding to the external data based on the target playback mode. The target playback mode set includes at least one target playback mode. The external data is confirmed by the external device based on third extended display identifier data.

In this way, when an external device is connected to the display device, the user can select playback modes such as the high-definition multimedia interface version and high frame rate via controls. The display device can update the extended display identifier data according to the set of playback modes supported by the device and trigger the playback mode negotiation process with the external device through hot-plug pin levels. This enables the display device to interact with the external device multiple times with the extended display identifier data to ultimately determine the specific target mode, thereby achieving adapted transmission of external data and effectively ensuring that the picture playback quality is consistent with the user's expectations.

In some feasible embodiments, the controller performs modification of the initial extended display identifier data of the display device to the first extended display identifier data based on the first playback mode set, specifically configured as follows:

Modify the playback parameter identifier corresponding to the playback parameter bit in the initial extended display identifier data based on at least one playback mode in the first playback mode set.

A driver comparison flag is added to the flag bits in the initial extended display identity data. The driver comparison flag is used to enable the external device to compare the first set of playback modes supported by the display device and the second set of playback modes supported by the external device to determine the second extended display identity data.

The first extended display identifier data is determined based on the modified playback parameter identifier and driver comparison identifier.

In this way, when modifying the extended display identifier data, the playback parameter identifier is updated, and a driver comparison identifier is added. Based on this identifier, the external device can be proactively triggered to compare the set of playback modes supported by both parties. Furthermore, based on this method, the external device is driven to perform the action of negotiating the playback mode with the display device, ensuring the reliability of the finally determined set of mutually supported modes.

In some feasible embodiments, the controller modifies the first extended display identifier data to the third extended display identifier data according to the target playback mode set, specifically configured as follows:

Add a drive transfer identifier to the first extended display identifier data. The drive transfer identifier is used to enable external devices to send external data back to the display device that supports the target playback mode set.

The first extended display identifier data is modified to the third extended display identifier data based on the drive transmission identifier and the target playback mode set.

In this way, after determining the target playback mode set, a driver transmission identifier is written into the extended display identifier data to drive the external device to send back external data that supports the final target playback mode. This ensures that the external data sent by the external device is fully matched with the playback capabilities of the display device, and also guarantees that the data format of the external data is consistent with the user's expectations.

In some feasible embodiments, upon receiving second extended display identifier data confirmed by the first extended display identifier data from an external device, the controller performs a process to determine the target playback mode set from the second playback mode set based on preset rules, specifically configured as follows:

When the second playback mode set includes a wide-view playback mode corresponding to the wide-view switch control, the wide-view playback parameters of the wide-view playback mode are determined based on the wide-view filtering rules. The wide-view filtering rules are determined based on the playback effect corresponding to the wide-view playback parameters.

Thus, when a wide-viewing-angle mode is included among the commonly supported playback modes, the display device determines the optimal wide-viewing-angle playback parameters based on preset wide-viewing-angle filtering rules. These filtering rules are determined based on playback effects to ensure that users can obtain the best viewing experience under different device and content environments, which helps reduce the number of user operations and thus improves the user experience.

In some feasible embodiments, upon receiving second extended display identifier data confirmed by the first extended display identifier data from an external device, the controller performs a process to determine the target playback mode set from the second playback mode set based on preset rules, specifically configured as follows:

When the second playback mode set includes a high frame rate playback mode corresponding to the high frame rate switch control, the control display shows a filter list. The filter list includes at least one frame rate parameter option.

In response to the selection instruction for selecting the target frame rate parameter option, the frame rate parameter for the high frame rate playback mode is determined based on the frame rate parameter corresponding to the target frame rate parameter option.

In this way, when the playback mode determination process involves a high frame rate mode, the controller will control the display to show a list of frame rate parameter options for the user to choose from, thus combining the user's preferences to select the playback mode. This interactive design can both incorporate user preferences and ensure that device performance matches user preferences, thereby effectively improving the reliability of playback mode selection and ensuring the reliability of data sent from external devices.

In some feasible embodiments, after the controller performs the adjustment of the hot-plug pin level according to a preset transmission protocol to enable the external device to read the first extended display identifier data, it is further configured to:

A negotiation command is sent to an external device via a preset pin. The negotiation command is used to enable the external device to determine the second extended display identifier data based on the first extended display identifier data.

In this way, after adjusting the hot-swap pin level, the display device actively sends a negotiation command to the external device through a preset pin. This command triggers the external device to perform a playback mode comparison process based on the received extended display identifier data. This lays the foundation for subsequently driving the external device to send external data that conforms to the target playback mode.

In some feasible embodiments, the high-definition multimedia interface includes hot-pluggable pins. The controller adjusts the level of the hot-pluggable pins according to a preset transmission protocol, specifically configured as follows:

Adjust the level signal corresponding to the hot-plug pin from high level to low level.

Based on the preset recovery time, the level signal corresponding to the hot-plug pin is adjusted from low level to high level.

Send the first extended display identifier data to the external device.

In this way, during the process of the external device reading the extended display identifier data of the display device, the display device adjusts the level of the hot-plug pins according to the preset rules of the high-definition multimedia interface protocol to drive the external device to read the extended display identifier data from the display device, so that the external device can subsequently perform the playback mode comparison process.

Secondly, embodiments of this application provide another display device, including: a display, a high-definition multimedia interface, and a controller. The high-definition multimedia interface is used to connect the display device to an external device, enabling the display device to receive content from the external device and display the content on the display.

The controller is configured as follows:

In response to a selection instruction for at least one of the following controls: a high-definition multimedia interface version control, a high frame rate switch control, a wide viewing angle switch control, and an adaptive frame rate switch control, a first set of playback modes is determined. The first set of playback modes includes at least one playback mode supported by the display device.

The initial extended display identifier data of the display device is modified to the first extended display identifier data based on the first playback mode set.

When it is detected that the display device is connected to an external device through the high-definition multimedia interface, the hot-plug pin is adjusted from low level to high level so that the external device can read the first extended display identification data.

Upon receiving second extended display identifier data, confirmed by the first extended display identifier data, from an external device, a target playback mode set is determined from the second playback mode set based on preset rules. The second extended display identifier data is used to characterize at least one second playback mode set jointly supported by the external device and the display device.

The first extended display identifier data is modified to the third extended display identifier data based on the target playback mode set.

The level of the hot-plug pin is adjusted according to the preset transmission protocol so that the external device can read the third extended display identifier data.

Upon receiving external data from an external device, the control display plays the media asset corresponding to the external data based on the target playback mode. The target playback mode set includes at least one target playback mode. The external data is confirmed by the external device based on third extended display identifier data.

In this way, the display device can store the user-set playback modes in real time, and when connected to external devices via a high-definition multimedia interface (HDML), adjust the levels of the hot-plug pins based on the HDML's interaction protocol to enable the external device to read extended display identifier data from the display device. Furthermore, based on multiple interactions between the display device and the external device, it drives the external device to send data corresponding to the target playback mode set, thereby ensuring that the playback effect of the display device matches the user's expectations without requiring frequent user intervention.

Thirdly, embodiments of this application provide an external device, including: a high-definition multimedia interface (HDMI) and a processor. The HDMI is configured to connect to an external display device to transmit data to the display device.

The processor is configured as follows:

If first extended display identifier data is read from the display device, the at least one set of first playback modes supported by the display device is parsed as represented by the first extended display identifier data.

Obtain at least one set of source playback modes supported by external devices.

The second extended display identifier data is determined based on the intersection of at least one first playback mode set and at least one source playback mode set. The second extended display identifier data is used to characterize at least one second playback mode set jointly supported by the external device and the display device.

Send the second extended display identifier data to the display device.

Upon receiving third extended display identifier data returned by the display device, the third extended display identifier data is parsed to determine the target playback mode set represented by the third extended display identifier data. The target playback mode set includes at least one of the following: High Definition Multimedia Interface version, high frame rate playback mode, wide viewing angle playback mode, and adaptive frame rate playback mode.

Send external data that supports the target set of playback modes to the display device.

In this way, after reading the extended display identifier data of the display device, the external device can automatically parse the playback modes it supports, find the intersection with its own supported source modes, determine the set of modes that are supported in common, and send it back. This mechanism allows the external device to actively participate in playback mode compatibility negotiation, ensuring that the external data sent is always within the capabilities supported by both parties. Furthermore, based on multiple negotiations, it can fully incorporate user preferences, thus avoiding problems such as black screens and crashes caused by mode incompatibility, and improving the reliability of data transmitted over the high-definition multimedia interface and the stability of playback.

In some feasible embodiments, the processor, upon reading the first extended display identifier data sent by the display device, is further configured to:

Parse the preset flag bits in the first extended display flag data.

If the preset flag is parsed to the driver comparison flag, the step of obtaining at least one set of source playback modes supported by the external device is performed.

In this way, external devices can perform corresponding actions based on the identifiers read from the preset identifiers. For example, if the driver comparison identifier is read, the device can determine the playback mode that is supported by both the display device and the external device. Thus, the external device can determine the format of the final data to be sent based on the negotiation with the display device, ensuring the reliability of the data and improving the compatibility between the data and the playback mode.

Fourthly, this application provides a data transmission method based on a high-definition multimedia interface, which can be applied to the display device mentioned in the first aspect. The method includes:

When the display device is connected to an external device via a high-definition multimedia interface, in response to a selection instruction for at least one of the following controls: a high-definition multimedia interface version control, a high frame rate switch control, a wide viewing angle switch control, and an adaptive frame rate switch control, a first set of playback modes is determined. The first set of playback modes includes at least one playback mode supported by the display device.

The initial extended display identifier data of the display device is modified to the first extended display identifier data based on the first playback mode set.

The level of the hot-plug pin is adjusted according to a preset transmission protocol so that an external device can read the first extended display identifier data.

Upon receiving second extended display identifier data, confirmed by the first extended display identifier data, from an external device, a target playback mode set is determined from the second playback mode set based on preset rules. The second extended display identifier data is used to characterize at least one second playback mode set jointly supported by the external device and the display device.

The first extended display identifier data is modified to the third extended display identifier data based on the target playback mode set.

The level of the hot-plug pin is adjusted according to the preset transmission protocol so that the external device can read the third extended display identifier data.

Upon receiving external data from an external device, the control display plays the media assets corresponding to the external data based on the target playback mode set. The external data is confirmed by the external device based on third-party extended display identifier data.

In this way, when an external device is connected to the display device, the user can select playback modes such as the high-definition multimedia interface version and high frame rate via controls. The display device can update the extended display identifier data according to the set of playback modes supported by the device and trigger the playback mode negotiation process with the external device through hot-plug pin levels. This enables the display device to interact with the external device multiple times with the extended display identifier data to ultimately determine the specific target mode, thereby achieving adapted transmission of external data and effectively ensuring that the picture playback quality is consistent with the user's expectations.

Fifthly, embodiments of this application provide another data transmission method based on a high-definition multimedia interface, which can be applied to the display device described in the second aspect. The method includes:

In response to a selection instruction for at least one of the following controls: a high-definition multimedia interface version control, a high frame rate switch control, a wide viewing angle switch control, and an adaptive frame rate switch control, a first set of playback modes is determined. The first set of playback modes includes at least one playback mode supported by the display device.

The initial extended display identifier data of the display device is modified to the first extended display identifier data based on the first playback mode set.

When it is detected that the display device is connected to an external device through the high-definition multimedia interface, the hot-plug pin is adjusted from low level to high level so that the external device can read the first extended display identification data.

Upon receiving second extended display identifier data, confirmed by the first extended display identifier data, from an external device, a target playback mode set is determined from the second playback mode set based on preset rules. The second extended display identifier data is used to characterize at least one second playback mode set jointly supported by the external device and the display device.

The first extended display identifier data is modified to the third extended display identifier data based on the target playback mode set.

The level of the hot-plug pin is adjusted according to the preset transmission protocol so that the external device can read the third extended display identifier data.

Upon receiving external data from an external device, the control display plays the corresponding image based on the target playback mode set. The external data is confirmed by the external device based on third extended display identifier data.

In this way, the display device can store the user-set playback modes in real time, and when connected to external devices via a high-definition multimedia interface (HDML), adjust the levels of the hot-plug pins based on the HDML's interaction protocol to enable the external device to read extended display identifier data from the display device. Furthermore, based on multiple interactions between the display device and the external device, it drives the external device to send data corresponding to the target playback mode set, thereby ensuring that the playback effect of the display device matches the user's expectations without requiring frequent user intervention.

Sixthly, embodiments of this application provide yet another data transmission method based on a high-definition multimedia interface, which can be applied to the external device mentioned in the third aspect. The method includes:

Upon reading the first extended display identifier data sent by the display device, the at least one set of first playback modes supported by the display device is parsed as represented by the first extended display identifier data.

Obtain at least one set of source playback modes supported by external devices.

The second extended display identifier data is determined based on the intersection of at least one first playback mode set and at least one source playback mode set.

The second extended display identifier data is sent to the display device. The second extended display identifier data is used to characterize at least one set of second playback modes jointly supported by the external device and the display device.

Upon receiving the third extended display identifier data returned by the display device, the third extended display identifier data is parsed to determine the target playback mode set represented by the third extended display identifier data.

Send external data that supports the target set of playback modes to the display device.

In this way, after reading the extended display identifier data of the display device, the external device can automatically parse the playback modes it supports, find the intersection with its own supported source modes, determine the set of modes that are supported in common, and send it back. This mechanism allows the external device to actively participate in playback mode compatibility negotiation, ensuring that the external data sent is always within the capabilities supported by both parties. Furthermore, based on multiple negotiations, it can fully incorporate user preferences, thus avoiding problems such as black screens and crashes caused by mode incompatibility, and improving the reliability of data transmitted over the high-definition multimedia interface and the stability of playback.

Attached Figure Description

To more clearly illustrate the technical solution of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

Figure 1 is a schematic diagram of a display device operation scenario provided in some embodiments of this application;

Figure 2 is a schematic diagram of the hardware configuration of a display device provided in some embodiments of this application;

Figure 3 is a schematic diagram of the software configuration of a display device provided in some embodiments of this application;

Figure 4 is a schematic diagram of a display device provided in some embodiments of this application connected to an external device via an HDMI interface;

Figure 5 is a flowchart illustrating the playback of external data between a display device and an external device based on multiple negotiations, according to some embodiments of this application.

Figure 6 is a schematic diagram of the playback mode selection interface of a display device provided in some embodiments of this application;

Figure 7 is a flowchart illustrating the determination of a first EDID by a display device according to some embodiments of this application;

Figure 8 is a flowchart illustrating the determination of a second EDID by an external device according to some embodiments of this application;

Figure 9 is a flowchart illustrating the determination of a third EDID by a display device according to some embodiments of this application;

Figure 10 is a flowchart illustrating the determination of a target playback mode set by a display device according to some embodiments of this application;

Figure 11 is a flowchart illustrating another example of a display device and an external device playing external data based on multiple negotiations, provided in some embodiments of this application.

Figure 12 is a flowchart of an external device sending external data matching a target playback set to a display device, as provided in some embodiments of this application;

Figure 13 is a flowchart of an external device reading a preset identifier bit according to some embodiments of this application;

Figure 14 is a timing diagram of multiple negotiations between a display device and an external device provided in some embodiments of this application.

Detailed Implementation

The embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described below do not represent all embodiments consistent with this application. They are merely examples of systems and methods consistent with some aspects of this application as detailed in the claims.

The embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described below do not represent all embodiments consistent with this application. They are merely examples of systems and methods consistent with some aspects of this application as detailed in the claims.

It should be noted that the brief descriptions of terms in this application are only for the convenience of understanding the embodiments described below, and are not intended to limit the embodiments of this application. Unless otherwise stated, these terms should be understood in their ordinary and common meaning.

The terms "first," "second," "third," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar or related objects or entities, and do not necessarily imply a specific order or sequence, unless otherwise specified. It should be understood that such terms are interchangeable where appropriate.

The terms “comprising” and “having”, and any variations thereof, are intended to cover but not exclude inclusion, for example, a product or device that includes a range of components is not necessarily limited to all of the components that are clearly listed, but may include other components that are not clearly listed or that are inherent to such product or device.

The term "module" refers to any known or subsequently developed hardware, software, firmware, artificial intelligence, fuzzy logic, or combination of hardware and/or software code that is capable of performing the functions associated with that element.

In this embodiment, display device 200 generally refers to a device with screen display and data processing capabilities. For example, display device 200 includes, but is not limited to, smart TVs, mobile terminals, computers, monitors, advertising screens, wearable devices, virtual reality devices, augmented reality devices, etc.

Figure 1 is a schematic diagram of an operation scenario between a display device and a control device provided in some embodiments of this application. As shown in Figure 1, a user can operate the display device 200 through touch operation, a mobile terminal 300, and a control device 100. For example, the control device 100 can be a remote control, a stylus, a gamepad, etc.

The mobile terminal 300 can function as a control device for human-computer interaction between the user and the display device 200. It can also function as a communication device for establishing a communication connection with the display device 200 and exchanging data. In some embodiments, the mobile terminal 300 can have software applications installed on it and communicate with the display device 200 via network communication protocols to achieve one-to-one control and data communication. Furthermore, it can transmit audio and video content displayed on the mobile terminal 300 to the display device 200 for synchronized display.

As also shown in Figure 1, the display device 200 communicates with the server 400 via various communication methods. The display device 200 can communicate via a local area network (LAN), a wireless local area network (WLAN), and other networks.

Display device 200 can provide broadcast television reception function, and can also be equipped with intelligent network television function that provides computer support, including but not limited to network television, smart television, Internet Protocol television (IPTV), etc.

Figure 2 is a hardware configuration block diagram of the display device 200 in Figure 1 provided in some embodiments of this application.

In some embodiments, the display device 200 may include at least one of a tuner 210, a communication device 220, a detector 230, a device interface 240, a controller 250, a display 260, an audio output device 270, a memory, a power supply, and a user input interface.

In some embodiments, detector 230 is used to collect signals from the external environment or signals interacting with the outside world. For example, detector 230 may include millimeter-wave radar, which can be used to detect whether a user is present within a preset range. Detector 230 may also include a voice acquisition unit to collect voice commands input by the user.

In some embodiments, the display 260 includes display function components for presenting images and driving components for driving image display. The display 260 is used to receive and display image signals output from the controller 250. For example, the display 260 can be used to display video content, image content, menu control interface components, and user control UI interfaces, etc.

In some embodiments, the communication device 220 is a component used to communicate with external devices or the server 400 according to various communication protocol types. The display device 200 may have multiple communication devices 220 depending on the supported communication methods. For example, when the display device 200 supports wireless network communication, it may have a communication device 220 with WiFi functionality. When the display device 200 supports Bluetooth connectivity, it needs to have a communication device 220 with Bluetooth functionality.

The communication device 220 enables the display device 200 to communicate with external devices or the server 400 via wireless or wired connections. Wired connections utilize data cables, interfaces, or other components to connect the display device 200 to external devices. Wireless connections utilize wireless signals or wireless networks. The display device 200 can directly establish a connection with external devices or indirectly through gateways, routers, or other connection devices.

In some embodiments, the controller 250 may include at least one of a central processing unit, a video processor, an audio processor, a graphics processor, and a power processor, and a first to an nth interface for input/output. The controller 250 controls the operation of the display device and responds to user operations through various software control programs stored in memory. The controller 250 controls the overall operation of the display device 200.

In some embodiments, the controller 250 and the tuner 210 may be located in different separate devices, that is, the tuner 210 may also be located in an external device of the main device where the controller 250 is located, such as an external set-top box.

In some embodiments, a user can input user commands through a graphical user interface (GUI) displayed on a display 260, and the user input interface receives user input commands through the graphical user interface (GUI).

In some embodiments, the audio output device 270 can be a built-in speaker of the display device 200 or an external audio output device connected to the display device 200. For the external audio output device connected to the display device 200, the display device 200 may also be provided with an external audio output terminal, through which the audio output device can be connected to the display device 200 to output sound from the display device 200.

In some embodiments, the user input interface 280 can be used to receive instructions input by a user. The user input interface 280 may include at least one of a microphone, touchpad, sensor, remote control, etc. The display device 200 can then receive user-input instructions based on the user input interface 280 to perform interactive functions with the user.

In some embodiments, to enable user interaction, the display device 200 may run an operating system. An operating system is a computer program that manages and controls the hardware and software resources of the display device 200. The operating system can control the display device to provide a user interface; for example, the operating system can directly control the display device to provide a user interface, or it can provide a user interface by running applications. The operating system also allows users to interact with the display device 200.

It should be noted that the operating system can be a native operating system based on a specific operating platform, a third-party operating system that is deeply customized based on a specific operating platform, or an independent operating system specifically developed for display devices.

Operating systems can be divided into different modules or layers based on the functions they implement. For example, as shown in Figure 3, in some embodiments, the system is divided into four layers, from top to bottom: the Applications layer (referred to as the "Application Layer"), the Application Framework layer (referred to as the "Framework Layer"), the System Library layer, and the Kernel layer.

In some embodiments, the application layer provides services and interfaces for applications, enabling the display device 200 to run the applications and interact with the user based on the applications. The application layer may contain at least one application, which may be a built-in Windows program, system settings program, or clock program, etc., or an application developed by a third-party developer. In specific implementations, the application packages in the application layer are not limited to the examples above.

The framework layer provides application programming interfaces (APIs) and a programming framework for applications. The application framework layer includes predefined functions. It acts as a central processing unit, determining the actions taken by applications within the application layer. Through the API, applications can access system resources and obtain system services during execution.

As shown in Figure 3, the application framework layer in this embodiment includes a view system, managers, and content providers. The view system designs and implements the application's interface and interactions, and includes lists, grids, text boxes, and buttons. The managers include at least one of the following modules: an Activity Manager for interacting with all running activities in the system; a Location Manager for providing system services or applications with access to system location services; a Package Manager for retrieving various information related to application packages currently installed on the device; a Notification Manager for controlling the display and clearing of notification messages; and a Window Manager for managing icons, windows, toolbars, wallpapers, and desktop widgets on the user interface.

In some embodiments, the Activity Manager manages the lifecycle of individual applications and common navigation and back functions, such as controlling application exit, opening, and back actions. The Window Manager manages all window programs, such as obtaining the screen size, determining if a status bar is present, locking the screen, capturing the screen, and controlling changes to the display window, such as shrinking the display window, shaking the display, or distorting the display.

In some embodiments, the system runtime library layer can provide support for the framework layer. When the framework layer is used, the operating system runs the instruction library contained in the system runtime library layer, such as the C/C++ instruction library, to implement the functions to be performed by the framework layer.

In some embodiments, the kernel layer is a functional layer between the hardware and software of the display device 200. The kernel layer can implement functions such as hardware abstraction, multitasking, and memory management. For example, as shown in Figure 3, the kernel layer can be configured with hardware drivers, which can be at least one of the following: audio driver, display driver, Bluetooth driver, camera driver, WIFI driver, USB driver, HDMI driver, sensor driver (such as fingerprint sensor, temperature sensor, pressure sensor, etc.), and power driver, etc.

As shown in Figure 4, the display device 200 is configured with multiple interfaces, including a High Definition Multimedia Interface (HDMI). For ease of description, the High Definition Multimedia Interface will be referred to as HDMI in the following text.

Furthermore, the display device 200 can connect to external devices via an HDMI interface. These external devices can include computers, game consoles, and other devices capable of sending external data to the display device 200.

For example, when the display device 200 is connected to a game console, the game console can send external game data to the display device 200 so that the display device 200's monitor 260 can display the external game data.

In some embodiments, the user can select a playback mode on the display device 200, such as whether to use a wide viewing angle mode, a high frame rate mode, or an adaptive frame rate strategy. The display device 200 will modify the Extended Display Identification Data (EDID) according to the user's selection. For ease of description, EDID will be used to represent Extended Display Identification Data in the following text.

Furthermore, external devices can read the EDID when connected to the display device 200. The EDID includes multiple codes compiled based on EDID encoding rules, each code representing a playback mode or other functional settings of the display device 200. Therefore, the EDID can be used to indicate the playback modes currently supported by the display device 200.

However, in real-world applications, after reading the EDID, the external device may not necessarily determine the data format of the data to be sent to the display device 200 based on the playback mode represented by the EDID. This directly leads to the display device 200 receiving data that may not match the playback mode selected by the user, and may even cause playback stuttering, black screen, or other issues due to the mismatch between the data format and the playback mode.

At this point, in order to achieve the desired playback effect, users need to adjust the data format sent by the external device. This results in users needing to perform frequent operations to obtain the desired playback effect.

To address the aforementioned issues, this application provides a display device 200, which includes a monitor 260, an HDMI interface, and a controller 250. The monitor 260 displays images corresponding to externally transmitted data, and the HDMI interface connects the display device 200 to an external device, enabling the display device 200 to receive content from the external device and display that content on the monitor.

As shown in Figure 5, the controller 250 is configured as follows:

S100: When the display device is connected to an external device via the HDMI interface, in response to a selection instruction for at least one of the HDMI version control, high frame rate switch control, wide viewing angle switch control, and adaptive frame rate switch control, a first playback mode set is determined.

As shown in Figure 6, in some embodiments, the display device 200 supports multiple playback modes such as HDMI version switching, high frame rate mode, wide viewing angle mode, and adaptive frame rate strategy. For these modes, associated controls can be set, and then users can select these controls in the settings menu to adjust the playback modes supported by the display device 200.

Understandably, users can enable or disable specific playback modes by selecting different controls, thereby meeting different viewing needs. That is, after the user selects a playback mode through these controls, the display device 200 can determine a first set of playback modes. This first set of playback modes is the set of playback modes currently supported by the display device 200, and includes multiple playback modes selected by the user according to their playback preferences.

S200: If a first set of playback modes is determined, the initial EDID of the display device is modified to the first EDID based on the first set of playback modes.

In some embodiments, the display device 200 retains an initial EDID before the user modifies the playback mode. If the playback mode remains unchanged, the display device 200 plays data sent by the external device according to the playback mode represented by the initial EDID. Furthermore, when the display device 200 determines a first playback mode set, it can modify the encoding in the initial EDID based on the first playback mode set to generate a first EDID that matches the first playback mode set. Therefore, when the display device 200 is connected to an external device via an HDMI interface, the external device can read the first EDID information, which incorporates the user's preferences, from the display device 200.

S300: Adjusts the level of the hot-plug pin according to the preset transmission protocol so that the external device can read the first EDID.

In some embodiments, the preset transmission protocol refers to the HDMI transmission protocol between the display device 200 and the external device. The display device 200 can adjust the hot-plug pins in the HDMI according to the changes in EDID, and synchronize the changes in EDID with the external device in a timely manner, thereby ensuring that the external device can adjust its data transmission strategy in a timely manner and ensuring the compatibility of the data sent by the external device with the playback mode of the display device 200.

In some embodiments, when the display device 200 is already connected to an external device, the hot-plug pin remains at a high level. If the EDID changes at this time, the display device 200 needs to adjust the level of the hot-plug pin according to a preset transmission protocol so that the external device can detect the EDID update and reread the first EDID information of the display device 200. Specifically, the controller 250 performs the adjustment of the hot-plug pin level according to the preset transmission protocol as follows:

Adjust the voltage level of the hot-plug pin from high to low. Based on the preset recovery time, adjust the voltage level of the hot-plug pin from low to high. Send the first EDID to the external device.

In this embodiment, the user modifies the playback mode according to their viewing preferences, and the display device 200 adaptively updates the EDID to obtain the first EDID. After obtaining the first EDID, the display device 200 can adjust the level of the hot-plug pin from high to low and then back to high, thereby triggering an external device to reread the first EDID information in the display device 200, thus achieving data transmission adaptation adjustment after the playback mode change.

The preset recovery time refers to the time it takes for the hot-plug pin to return to a high level after changing from a high level to a low level. It can be set according to the actual application scenario to ensure that the external device can detect the change in EDID and perform the EDID reading action.

S400: Upon receiving a second EDID confirmed by the first EDID from an external device, determine the target playback mode set from the second playback mode set based on preset rules.

In some embodiments, the second EDID is used to characterize at least one set of second playback modes jointly supported by the external device and the display device.

It should be noted that during the playback mode modification phase, users can only operate on whether the playback mode is activated. Each playback mode includes multiple sub-playback modes, which are the specific parameters of the playback mode. Taking the wide-viewing-angle playback mode as an example, the wide-viewing-angle playback mode can include a sub-playback mode with an aspect ratio of 21:9, a resolution of 3840×1600, and a refresh rate of 120Hz, as well as a sub-playback mode with an aspect ratio of 21:9, a resolution of 3840×1600, and a refresh rate of 60Hz. Therefore, the first playback mode set represented by the first EDID includes combinations of multiple playback modes, and these combinations of playback modes are all playback modes that the current display device 200 supports, taking into account the user's preferences.

In this way, after reading the first EDID, the external device can determine the set of playback modes that the display device 200 initially supports, taking into account the user's preferences. Furthermore, the external device can match the first set of playback modes represented by the first EDID with its own set of supported playback modes to determine at least one second set of playback modes commonly supported by both devices.

It is understandable that the playback modes supported by the external device may include multiple sub-playback modes, and thus the second EDID determined by the external device based on the first EDID can represent at least one set of second playback modes.

In this way, after determining the second EDID, the external device can send the second EDID back to the display device 200 to inform the display device 200 of the negotiation result of the playback mode set. Then, the display device 200 can determine the second playback mode set that is supported by both the external device and the display device based on the second EDID, and further filter the target playback mode set according to preset rules.

In some embodiments, the preset rules for filtering target modes differ for different types of playback modes. For example, the display device 200 can actively filter playback modes that clearly improve the playback effect without causing adverse viewing effects on the user, thereby reducing the number of operations required by the user.

For example, the display device 200 can filter playback modes that may affect the user's viewing experience or require user confirmation by prompting the user for confirmation. This ensures that the target playback mode fully aligns with the user's intent and avoids some playback modes negatively impacting the user's viewing experience.

In this way, the display device 200 can determine the target playback mode set upon receiving the second EDID. The target playback mode set includes the activation status of the playback mode and its specific parameters, ensuring that the target playback mode set meets both device performance requirements and user-specific needs, while effectively reducing the number of user operations.

S500: Modify the first EDID to the third EDID based on the target playback mode set.

In some embodiments, after determining the target playback mode set, the display device 200 can modify the first EDID to a third EDID based on the playback modes in the target playback mode set, so as to represent the target playback mode set based on the third EDID. Modifying the first EDID to the third EDID can be manifested as modifying the corresponding fields/encodings in the first EDID according to the playback modes in the target playback mode set, thereby generating a third EDID representing the target playback mode set.

Furthermore, external devices can obtain the set of target playback modes currently supported by the display device 200 by reading the third EDID, so as to send data in a suitable format to the display device 200 according to the target playback mode set.

S600: Adjusts the level of the hot-plug pin according to the preset transmission protocol so that external devices can read the third EDID.

In some embodiments, the preset transmission protocol here is also a pre-agreed communication standard between the display device 200 and the external device, namely, the transmission protocol specified based on the HDMI protocol. When the display device 200 is already connected to the external device, the external device can be triggered to reread the updated third EDID in the display device 200 by adjusting the hot-plug pin level. In this way, the external device can obtain the latest playback mode information in a timely manner without needing to re-plug the device, thereby achieving dynamic adaptation and efficient communication.

S700: Upon receiving external data from an external device, the control display plays the media asset corresponding to the external data based on the target playback mode. The target playback mode set includes at least one target playback mode. The external data is confirmed by the external device based on third extended display identifier data.

In some embodiments, after reading the third EDID, the external device can parse the third EDID to obtain the target playback mode set, and the external device can send external data matching the specific parameters in the target playback mode set to the display device 200.

For example, if the specific parameters used to describe the wide-viewing-angle playback mode in the target playback mode set are an aspect ratio of 21:9, a resolution of 3840×1600, and a refresh rate of 120Hz, then the external device will generate/select external data that matches these parameters and send it back to the display device 200.

When the display device 200 receives a data stream from external data, it can control the display 260 to display the image corresponding to the external data, thereby achieving the playback effect desired by the user.

In this way, when the display device 200 is connected to an external device via the HDMI interface, it can determine the final target playback mode through multiple negotiations and interactions with the external device, and drive the external device to send external data to the display device 200 based on the target playback mode. This ensures that the display device 200 can fully combine the user's timing needs to display the picture corresponding to the external data, thereby improving the user's viewing experience.

In addition, by driving external devices to send matching external data according to the target playback mode through the display device 200, the consistency between the external data and the playback mode set by the user is effectively guaranteed, avoiding problems such as black screen and stuttering caused by the mismatch between the playback mode and the external data. At the same time, it can also effectively reduce the cumbersome operations that users need to perform when adjusting the playback mode, thereby improving the convenience and smoothness of the user experience.

As shown in Figure 7, the display device 200 can drive an external device to perform actions such as comparing playback mode sets and sending data based on a target playback mode set by adding an identifier to the EDID. Specifically, the controller 250 modifies the display device's initial EDID to the first EDID based on the first playback mode set, and is configured as follows:

S201: Modify the playback parameter identifier corresponding to the playback parameter bit in the initial EDID based on at least one playback mode in the first playback mode set.

S202: Add a driver comparison flag to the flag bits in the initial EDID. The driver comparison flag is used to enable the external device to compare the first set of playback modes supported by the display device and the second set of playback modes supported by the external device to determine the second EDID.

S203: Determine the first EDID based on the modified playback parameter identifier and driver comparison identifier.

In some embodiments, the EDID in the display device 200 can be a 128-bit EDID data block or a 256-bit EDID data block. Taking a 256-bit EDID data block as an example, the EDID of the display device can include a base block and an extension block. The base block is used to store the basic display parameters of the display device 200, while the extension block is used to store additional display parameters and identification information.

Therefore, in order to drive the external device to actively perform the comparison and determine the set of commonly supported playback modes, the display device 200 can add a drive comparison identifier to the first EDID. In this way, when the external device reads the drive comparison identifier, it can perform the corresponding action based on the drive comparison identifier.

It should be noted that adding a driver comparison identifier to the first EDID is equivalent to extending the HDMI protocol to a certain extent. Therefore, the display device 200 and the external device can be pre-adapted to the protocol so that the external device can accurately identify the driver comparison identifier and its specific meaning.

It is understandable that modifying the initial EDID based on at least one playback mode in the first playback mode set is equivalent to modifying the corresponding field/encoding in the EDID based on the selected playback mode. For example, if the user previously selected that the wide-viewing angle mode was not enabled, but the user now selects to enable the wide-viewing angle playback mode, then the display device 200 will change the field corresponding to the wide-viewing angle playback mode in the EDID from the disabled state to the enabled state.

In this way, the display device 200 modifies the fields corresponding to the playback modes in the EDID based on the modified playback mode set, and can generate a first EDID that matches the first playback mode set. The first EDID also carries a driver comparison identifier. When an external device reads the first EDID from the display device 200, it can not only parse the first EDID to determine the current playback mode set of the display device 200, but also execute comparison logic based on the driver comparison identifier to determine the playback mode set that it and the display device 200 both support, and then determine the second EDID. This ensures the compatibility of the format of the sent data with the playback mode of the display device 200 through negotiation, avoiding abnormal screen display caused by playback mode mismatch.

In some embodiments, the display device 200 uses a limited number of bits in its EDID data block, such as 128 bits, making it difficult to add extended identifiers to such EDID data blocks. As shown in FIG8, the display device 200 can drive an external device to perform actions based on the first EDID to determine a set of playback modes commonly supported by the display device 200. Specifically, after the controller adjusts the level of the hot-plug pin according to a preset transmission protocol so that the external device reads the first EDID, it is further configured to:

Negotiation commands are sent to external devices via preset pins.

In some embodiments, after adjusting the hot-swap pins, the display device 200 can send a negotiation command to an external device via a preset pin. Upon receiving the negotiation command, the external device can, according to the comparison action indicated by the negotiation command, compare the first set of playback modes represented by the first EDID with its own supported set of playback modes, thereby determining a second set of playback modes that both support, and determining a second EDID used to represent the second set of playback modes.

The preset pin can send negotiation commands to external devices using the CEC (Consumer Electronics Control) pin in the HDMI interface. After receiving the negotiation command, the external device can perform comparison and determine the second EDID based on the first EDID it reads.

It should be noted that the display device 200 and the external device need to be protocol-compatible so that the external device can recognize the negotiation instructions and perform corresponding actions according to the negotiation instructions.

As shown in Figure 9, the display device 200 can also drive an external device to send external data matching the target playback mode represented by the third EDID to the display device 200 after reading the third EDID by adding a drive transmission identifier to the EDID. Specifically, the controller modifies the first EDID to the third EDID according to the target playback mode set, and is configured as follows:

S501: Add a drive transfer identifier to the first EDID. The drive transfer identifier is used to enable external devices to send back external data supporting the target playback mode set to the display device.

S502: Modify the first EDID to the third EDID based on the drive transmission identifier and the target playback mode set.

In some embodiments, after the display device 200 confirms the third EDID, it can send the third EDID to an external device so that the external device can send external data matching the target playback mode set to the display device 200 upon reading the third EDID.

Therefore, by adding a drive transmission identifier to the first EDID, the display device 200 enables the external device to send external data that matches the target playback mode set based on the read drive transmission identifier.

In addition, after determining the target playback mode, the display device 200 can also modify the corresponding field in the first EDID according to the target playback mode, so as to form a third EDID based on the modified field and the added drive transmission identifier.

It should be noted that, similar to adding a driver comparison identifier, adding a driver transmission identifier is also equivalent to an extension of the HDMI protocol. Therefore, protocol adaptation may need to be performed in advance between the display device 200 and the external device to ensure that the external device can recognize the existence of the driver transmission identifier and perform corresponding data transmission adjustments accordingly.

In this way, after reading the third EDID, the external device can both identify the target playback mode set represented by the third EDID and, upon reading the driver transmission identifier, send adapted external data to the display device 200 according to the target playback mode set. Through this mechanism, the external device can dynamically adjust its output content to ensure a perfect match with the playback capabilities of the display device 200, thereby avoiding picture abnormalities or performance losses caused by data format incompatibility. Simultaneously, the display device 200 can fully incorporate user preferences to provide adapted playback effects.

It is understandable that, analogous to the driving method of determining the second EDID based on the first EDID read by the external device, when the display device 200 drives the external device to send external data that is compatible with the target playback mode, it can also send a negotiation command to the external device through the CEC pin, so as to instruct the external device to return external data that matches the target playback mode set represented by the third EDID based on the negotiation command.

Based on this approach, when there are insufficient available fields in the EDID data block, the pressure of insufficient fields can be effectively alleviated, and the function of driving external devices to perform playback mode set comparison and send matching data can be realized. This allows the display device 200 to fully combine the user's wishes to play the picture corresponding to the external data, and reduce the number of operations the user needs to perform during playback.

As shown in Figure 10, in some embodiments, upon receiving the second EDID, the display device 200 can further determine the target playback mode set based on the second EDID. That is, after determining the playback mode set commonly supported by the external device, it further determines the playback mode and the specific parameters corresponding to the playback mode. Specifically, upon receiving the second EDID confirmed based on the first EDID from the external device, the controller 250 executes a preset rule to determine the target playback mode set from the second playback mode set, specifically configured as follows:

S401a: When the second playback mode set includes the wide-view playback mode corresponding to the wide-view switch control, determine the wide-view playback parameters of the wide-view playback mode based on the wide-view filtering rules.

In some embodiments, the wide viewing angle filtering rule is determined based on the playback effect corresponding to the wide viewing angle playback parameters. For example, taking a 21:9 wide viewing angle playback mode as an example, it includes two playback parameters: 3840×1600+120Hz and 3840×1600+60Hz. When the display device 200 plays the image at a refresh rate of 120Hz, it provides a smoother visual experience, and the 120Hz refresh rate will not have any adverse effects on the user (although some users may experience discomfort when viewing high refresh rate images). Therefore, when determining the specific playback parameters for the wide viewing angle playback mode, the display device 200 can prioritize parameters that improve the playback effect, such as selecting the 3840×1600+120Hz playback parameter, to achieve a better visual experience.

Understandably, for other types of playback modes similar to the wide-viewing-angle playback mode, the display device 200 can also determine the target playback parameters based on the same filtering rules.

As shown in Figure 10, in some embodiments, the specific parameters of certain playback modes need to be determined based on user preferences, such as high frame rate modes. High frame rate modes can include various refresh rate options such as 144Hz/165Hz/240Hz/288Hz/330Hz. Different users have different perceptions and needs regarding high refresh rates, and some users are not comfortable with excessively high refresh rates. Therefore, the selection of specific parameters for such playback modes needs to be determined based on user preferences. Specifically, the controller 250 executes a process to determine the target playback mode set from the second playback mode set based on preset rules, which is configured as follows:

S401b: When the second playback mode set includes a high frame rate playback mode corresponding to the high frame rate switch control, control the display to show the filter list.

S402b: In response to a selection instruction for selecting a target frame rate parameter option, determine the frame rate parameter for the high frame rate playback mode based on the frame rate parameter corresponding to the target frame rate parameter option.

In some embodiments, the filter list includes at least one frame rate parameter option. It is understood that frame rate here refers to refresh rate. For example, the filter list includes refresh rate options such as 144Hz, 165Hz, 240Hz, 288Hz, and 330Hz. If the display device 200 determines that it supports these refresh rate options in conjunction with external devices, it can display these refresh rate options in the filter list for the user to select.

In this embodiment, the display method of the filter list is not limited. Based on the option display of the filter list, the user can input selection commands through various means such as remote control and voice to determine the refresh rate. After receiving the user's selection command, the display device 200 can determine the target frame rate parameter corresponding to the high frame rate playback mode.

It is understandable that after determining the target frame rate parameters, the display device 200 can modify the EDID based on the determined target frame rate parameters in order to obtain a third EDID corresponding to the target playback mode set.

Furthermore, for other playback modes similar to high frame rate playback mode that require selection based on user preferences, the display device 200 can also use the same interactive method to allow users to participate in parameter determination, thereby ensuring that playback parameters are adjusted in accordance with user preferences and enhancing the user's personalized experience.

In other embodiments, for adaptive frame rate modes, such as VRR (Variable Refresh Rate) and FreeSync (Adaptive-Sync Technology), there is no specific selection of playback parameters. Essentially, it's an adaptive mechanism or a function of the display device 200. Therefore, when selecting this type of playback mode, the user only needs to adjust its playback state, such as enabling/disabling it. Thus, in the process of ultimately determining this type of playback mode, the display device 200 only needs to determine whether to enable this playback state based on the user-selected playback state and the support of external devices.

In this way, when determining the target playback mode set, the display device 200 can consider both the improvement in playback effect and the user's subjective wishes, thus significantly enhancing the user experience. Furthermore, based on interaction with external devices, the data format sent by the external devices can match the playback modes supported by the display device 200, which helps ensure the playback effect of external data.

As shown in Figure 11, this embodiment of the application also provides a display device 200, which includes a display 260, an HDMI interface, and a controller 250. The display 260 is used to play image content, such as the screen corresponding to external data sent by an external device via the HDMI interface. The HDMI interface is used to connect the display device 200 to the external device, enabling the display device 200 to receive content from the external device and display the content on the display 260.

The controller is configured as follows:

S10: In response to a selection instruction for at least one of the following controls: HDMI version control, high frame rate switch control, wide viewing angle switch control, and adaptive frame rate switch control, a first playback mode set is determined. The first playback mode set includes at least one playback mode supported by the display device.

S20: Modify the initial EDID of the display device to the first EDID based on the first playback mode set.

S30: When an external device is detected to be connected to the display device via the HDMI interface, the hot-plug pin is adjusted from low level to high level so that the external device can read the first EDID.

S40: Upon receiving a second EDID confirmed based on the first EDID from an external device, determine a target playback mode set from the second playback mode set based on preset rules. The second EDID is used to characterize at least one second playback mode set jointly supported by the external device and the display device;

S50: Modify the first EDID to the third EDID according to the target playback mode set.

S60: Adjust the level of the hot-plug pin according to the preset transmission protocol so that the external device can read the third EDID.

S70: Upon receiving external data from an external device, the control display plays the media asset corresponding to the external data based on the target playback mode. The target playback mode set includes at least one target playback mode. The external data is confirmed by the external device based on third extended display identifier data.

In some embodiments, a user can adjust the playback mode of the display device 200 even when it is not connected to an external device. The display device 200 can modify the initial EDID to a first EDID based on the user's adjustment. Furthermore, the display device 200 can store the first EDID in a designated space when it is not connected to an external device.

In this way, when the display device 200 is connected to an external device via the HDMI interface, it can adjust the hot-plug pin from low level to high level so that the external device can read the first EDID. This allows the external device to determine the first set of playback modes supported by the display device based on the first EDID, and then determine the second set of playback modes and the second EDID that are supported by both devices.

Understandably, the display device 200 can add a driver comparison identifier to the first EDID to drive the external device to perform an action that determines the second set of playback modes and the second EDID that both support.

Furthermore, during the phase when the display device 200 sends the third EDID to an external device, a drive transmission identifier may also be added to the third EDID to drive the external device to execute a process that combines external data adapted to the target playback mode represented by the third EDID.

In this way, based on multiple negotiations and interactions with external devices, the display device 200 can adapt the external data sent by the external devices to the display device 200 to the playback mode of the display device 200, and the display device 200 can fully combine the user's wishes to play the picture corresponding to the external data.

Furthermore, based on this approach, the display device 200, acting as the dominant force in the data transmission process, drives external devices to prioritize sending external data that matches the target playback mode. This effectively reduces the number of operations the user needs during the data transmission phase, thus improving the user experience.

As shown in Figure 12, this embodiment of the application provides an external device that can be connected to a display device 200 via an HDMI interface and send adapted external data to the display device 200 based on a protocol compatible with the display device 200. The external device includes a processor configured to:

S1000: When the first EDID is read from the display device, parse the set of at least one first playback mode supported by the display device represented by the first EDID.

S2000: Obtain at least one set of source playback modes supported by the external device.

S3000: Determine a second EDID based on the intersection of at least one first playback mode set and at least one source playback mode set. The second EDID is used to characterize at least one second playback mode set jointly supported by the external device and the display device.

S4000: Send the second EDID to the display device.

S5000: Upon receiving a third EDID returned by the display device, parse the third EDID to determine the target playback mode set represented by the third EDID. The target playback mode set includes at least one of HDMI version, high frame rate playback mode, wide viewing angle playback mode, and adaptive frame rate playback mode.

S6000: Sends external data supporting the target playback mode set to the display device.

In some embodiments, after an external device is connected to the display device 200 via an HDMI interface, it can monitor the level state of the hot-plug pins. For example, when the level state changes from low to high, the external device can actively read the first EDID from the space used by the display device 200 to store the EDID based on the HDMI preset protocol.

In other embodiments, when an external device detects the process of a hot-plug pin changing from a high level to a low level and then back to a high level while maintaining a connection with the display device 200, it can actively read the first EDID from the space used by the display device 200 to store EDID based on the HDMI preset protocol.

Furthermore, when an external device reads the first EDID, it can obtain the set of source playback modes it supports, and then determine the second EDID based on the intersection of the source playback mode set and the first playback mode set supported by the display device, that is, determine the set of playback modes that both support, so as to avoid the data transmitted to the display device 200 in the future being mismatched with the playback mode.

After determining the second EDID, the external device can send the second EDID to the display device 200 so that the display device 200 can further determine the target playback mode set based on the second EDID.

After receiving the second EDID, the display device 200 can determine the target playback mode set and the third EDID used to represent the target playback mode set by combining preset rules. After determining the third EDID, the display device 200 can send the third EDID to an external device. Upon receiving the third EDID, the external device can parse the third EDID to determine the target playback mode set, and then send external data supporting the target playback mode set to the display device 200 according to the target playback mode set.

In this way, based on the multiple negotiation and interaction between the display device 200 and the external device, the display device 200 can take the lead in the external data transmission process, actively drive the external device to send matching external data based on the target playback mode set, thereby making the playback effect meet the user's wishes, and effectively avoiding playback abnormality problems caused by mismatch between external data and playback mode set, thus improving the user's viewing experience.

In some embodiments, the display device 200 pre-adapts to the external device's protocol to ensure that the external device can recognize the display device 200's extensions to the HDMI protocol/EDID. Thus, upon receiving the first EDID, the external device identifies the identification information within it, thereby correctly parsing the subsequent negotiation process. As shown in Figure 13, the processor, upon reading the first EDID sent by the display device 200, is further configured to:

S1001: Parse the preset flag bits in the first EDID.

S1002: If the driver comparison flag is parsed from the preset flag bit, perform the step of obtaining at least one set of source playback modes supported by the external device.

In some embodiments, upon receiving a first EDID, the external device can parse the first EDID and identify a preset flag bit within it. If a driver comparison flag is identified, the external device can perform an action to determine a second EDID based on the first EDID. That is, the display device 200 drives the external device to perform a playback mode negotiation process by adding a driver comparison flag.

In some embodiments, upon receiving a third EDID, the external device can also parse the preset identifier bits of the third EDID to identify the drive transmission identifier. Upon identifying the drive transmission identifier, the external device can execute a process of sending matching external data based on the target playback mode represented by the third EDID. That is, the display device 200 drives the external device to execute a playback mode negotiation process by adding the drive transmission identifier.

In other embodiments, the external device can receive a negotiation command sent by the display device 200 through a preset pin after adjusting the hot-plug pin level. Specifically, after reading the first EDID, the external device receives a negotiation command for determining commonly supported playback modes, and then executes the process of determining the second EDID and feeding back the second EDID to the display device 200. After reading the third EDID, the external device receives a negotiation command for sending external data matching the target playback mode set to the display device 200, and then executes the process of sending external data matching the target playback mode set.

Provided that the external device is compatible with the display device 200, it can perform the playback mode set negotiation process and send external data matching the target playback mode set by recognizing the identifier added by the display device 200 in the EDID. Alternatively, it can perform the playback mode set negotiation process and send external data matching the target playback mode set by receiving negotiation instructions sent by the display device 200.

In this way, when external devices send external data to display device 200 via the HDMI interface, they can proactively adapt to the playback mode requirements of display device 200 and send matching external data, thereby ensuring that the playback effect of display device 200 matches the user's expectations. This effectively avoids problems such as screen tearing and stuttering caused by incompatibility between the external device and the display device's playback mode, thus improving the user's viewing experience. Furthermore, it reduces the number of times the user needs to coordinate playback modes during the playback mode settings process.

As shown in Figure 14, in some embodiments, this application provides a data transmission method based on HDMI, which can be applied to a display device 200 that can be connected to an external device via HDMI. The method can be applied to a display device 200 that is already connected to an external device via HDMI, and includes:

When the display device is connected to an external device via an HDMI interface, a first playback mode set is determined in response to a selection instruction for at least one of the following controls: HDMI version control, high frame rate switch control, wide viewing angle switch control, and adaptive frame rate switch control. The first playback mode set includes at least one playback mode supported by the display device.

The initial EDID of the display device is modified to the first EDID based on the first playback mode set.

The level of the hot-plug pin is adjusted according to the preset transmission protocol so that the external device can read the first EDID.

Upon receiving a second EDID confirmed by the first EDID from an external device, a target playback mode set is determined from the second playback mode set based on preset rules. The second EDID is used to characterize at least one second playback mode set jointly supported by the external device and the display device.

The first EDID is modified to the third EDID based on the target playback mode set.

The level of the hot-plug pin is adjusted according to the preset transmission protocol so that the external device can read the third EDID.

Upon receiving external data from an external device, the control display plays the corresponding image based on the target playback mode. The target playback mode set includes at least one target playback mode. The external data is determined by the external device based on the target playback mode set.

In some embodiments, this application provides a data transmission method based on HDMI, which can be applied to a display device 200 that can be connected to an external device via HDMI. This method can be applied to a display device 200 where no external device is connected when the user selects a playback mode. The method includes:

In response to a selection instruction for at least one of the following controls: HDMI version control, high frame rate switch control, wide viewing angle switch control, and adaptive frame rate switch control, a first set of playback modes is determined. The first set of playback modes includes at least one playback mode supported by the display device.

The initial EDID of the display device is modified to the first EDID based on the first playback mode set.

When an external device is detected to be connected to the display device via the HDMI interface, the hot-plug pin is adjusted from low to high so that the external device can read the first EDID.

Upon receiving a second EDID confirmed by the first EDID from an external device, a target playback mode set is determined from the second playback mode set based on preset rules. The second EDID is used to characterize at least one second playback mode set jointly supported by the external device and the display device.

The first EDID is modified to the third EDID based on the target playback mode set.

The level of the hot-plug pin is adjusted according to the preset transmission protocol so that the external device can read the third EDID.

Upon receiving external data from an external device, the control display plays the media asset corresponding to the external data based on the target playback mode. The target playback mode set includes at least one target playback mode. The external data is the data determined by the external device based on the target playback mode set.

In some embodiments, this application provides an HDMI-based data transmission method that can be applied to external devices, the method comprising:

If the first EDID sent by the display device is read, the set of at least one first playback mode supported by the display device represented by the first EDID is parsed.

Obtain at least one set of source playback modes supported by external devices.

The second EDID is determined based on the intersection of at least one first playback mode set and at least one source playback mode set.

The second EDID is sent to the display device. The second EDID is used to characterize at least one set of second playback modes jointly supported by the external device and the display device.

Upon receiving the third EDID returned by the display device, the third EDID is parsed to determine the target playback mode represented by the third EDID. The target playback mode is a subset of at least one target playback mode combination.

Send external data that supports the target playback mode to the display device.

Similar parts between the embodiments provided in this application can be referred to mutually. The specific implementation methods provided above are only a few examples under the overall concept of this application and do not constitute a limitation on the scope of protection of this application. For those skilled in the art, any other implementation methods extended from the solution of this application without creative effort shall fall within the scope of protection of this application.

Claims (10)

1. A display device, characterized in that it comprises: monitor; A high-definition multimedia interface is used to connect the display device to an external device, so that the display device can receive content from the external device and display the content on the display. The controller is configured as follows: When the display device is connected to an external device via the high-definition multimedia interface, in response to a selection instruction for at least one of the high-definition multimedia interface version control, high frame rate switch control, wide viewing angle switch control, and adaptive frame rate switch control, a first playback mode set is determined; the first playback mode set includes at least one playback mode supported by the display device. Based on the first playback mode set, the initial extended display identifier data of the display device is modified to the first extended display identifier data; the first extended display identifier data is used to characterize the first playback mode set. The level of the hot-plug pin is adjusted according to a preset transmission protocol so that the external device can read the first extended display identifier data; Upon receiving second extended display identifier data confirmed based on the first extended display identifier data from the external device, a target playback mode set is determined from the second playback mode set based on a preset rule; the second extended display identifier data is used to characterize at least one second playback mode set jointly supported by the external device and the display device. The first extended display identifier data is modified to the third extended display identifier data according to the target playback mode set; The level of the hot-plug pin is adjusted according to the preset transmission protocol so that the external device can read the third extended display identifier data; Upon receiving external data transmitted back from the external device, the display is controlled to play the media asset image corresponding to the external data based on the target playback mode; the target playback mode set includes at least one target playback mode; the external data is confirmed by the external device based on the third extended display identifier data. 2. The display device according to claim 1, wherein the controller is specifically configured to modify the initial extended display identifier data of the display device to the first extended display identifier data based on the first playback mode set, wherein: Modify the playback parameter identifier corresponding to the playback parameter bit in the initial extended display identifier data based on at least one playback mode in the first playback mode set; A driver comparison flag is added to the flag bit of the initial extended display identifier data; the driver comparison flag is used to enable the external device to compare the first set of playback modes supported by the display device and the second set of playback modes supported by the external device to determine the second extended display identifier data. The first extended display identifier data is determined based on the modified playback parameter identifier and the driver comparison identifier. 3. The display device according to claim 1, wherein the controller is specifically configured to modify the first extended display identifier data to the third extended display identifier data according to the target playback mode set. Add a drive transmission identifier to the first extended display identifier data; the drive transmission identifier is used to enable the external device to send back external data supporting the target playback mode set to the display device; The first extended display identifier data is modified to the third extended display identifier data based on the drive transmission identifier and the target playback mode set. 4. The display device according to claim 1, wherein the controller, upon receiving second extended display identifier data confirmed based on the first extended display identifier data from the external device, performs a process of determining a target playback mode set from the second playback mode set based on a preset rule, specifically configured as follows: When the second playback mode set includes the wide-view playback mode corresponding to the wide-view switch control, the wide-view playback parameters of the wide-view playback mode are determined based on the wide-view filtering rules; the wide-view filtering rules are determined based on the playback effect corresponding to the wide-view playback parameters. 5. The display device according to claim 1, wherein the controller, upon receiving second extended display identifier data confirmed based on the first extended display identifier data from the external device, performs a process of determining a target playback mode set from the second playback mode set based on a preset rule, specifically configured as follows: When the second playback mode set includes a high frame rate playback mode corresponding to the high frame rate switch control, the display is controlled to show a filter list; the filter list includes at least one frame rate parameter option. In response to a selection instruction for selecting a target frame rate parameter option, the frame rate parameter for the high frame rate playback mode is determined based on the frame rate parameter corresponding to the target frame rate parameter option. 6. The display device according to claim 1, wherein after the controller performs an adjustment of the level of the hot-plug pin according to a preset transmission protocol so that the external device reads the first extended display identifier data, it is further configured to: A negotiation command is sent to the external device via a preset pin; the negotiation command is used to enable the external device to determine the second extended display identifier data based on the first extended display identifier data. 7. The display device according to claim 1, wherein the high-definition multimedia interface includes hot-swappable pins; the controller adjusts the level of the hot-swappable pins according to a preset transmission protocol, specifically configured as follows: Adjust the level signal corresponding to the hot-plug pin from high level to low level; Based on the preset recovery time, the level signal corresponding to the hot-plug pin is adjusted from low level to high level; The first extended display identifier data is sent to the external device. 8. A display device, characterized in that it comprises: monitor; A high-definition multimedia interface is used to connect the display device to an external device, so that the display device can receive content from the external device and display the content on the display. The controller is configured as follows: In response to a selection instruction for at least one of the following controls: a high-definition multimedia interface version control, a high frame rate switch control, a wide viewing angle switch control, and an adaptive frame rate switch control, a first playback mode set is determined; the first playback mode set includes at least one playback mode supported by the display device. Based on the first playback mode set, the initial extended display identifier data of the display device is modified to the first extended display identifier data; When it is detected that the display device is connected to an external device through the high-definition multimedia interface, the hot-plug pin is adjusted from low level to high level so that the external device can read the first extended display identification data; Upon receiving second extended display identifier data confirmed based on the first extended display identifier data from the external device, a target playback mode set is determined from the second playback mode set based on a preset rule; the second extended display identifier data is used to characterize at least one second playback mode set jointly supported by the external device and the display device. The first extended display identifier data is modified to the third extended display identifier data according to the target playback mode set; The level of the hot-plug pin is adjusted according to the preset transmission protocol so that the external device can read the third extended display identifier data; Upon receiving external data transmitted back from the external device, the display is controlled to play the media asset image corresponding to the external data based on the target playback mode; the target playback mode set includes at least one target playback mode; the external data is confirmed by the external device based on the third extended display identifier data. 9. An external device, characterized in that it comprises: The high-definition multimedia interface is configured as an external display device; The processor is configured as follows: If first extended display identifier data is read from the display device, the at least one set of first playback modes supported by the display device, represented by the first extended display identifier data, is parsed. Obtain at least one set of source playback modes supported by the external device; The second extended display identifier data is determined based on the intersection of the at least one first playback mode set and the at least one source playback mode set; the second extended display identifier data is used to characterize at least one second playback mode set jointly supported by the external device and the display device; Send the second extended display identifier data to the display device; Upon receiving the third extended display identifier data returned by the display device, the third extended display identifier data is parsed to determine the target playback mode set represented by the third extended display identifier data; the target playback mode set includes at least one of high-definition multimedia interface version, high frame rate playback mode, wide viewing angle playback mode, and adaptive frame rate playback mode. Send external data supporting the target playback mode set to the display device. 10. A data transmission method based on a high-definition multimedia interface, characterized in that it is applied to the display device according to any one of claims 1-7, the method comprising: When the display device is connected to an external device through the high-definition multimedia interface, in response to a selection instruction for at least one of the high-definition multimedia interface version control, high frame rate switch control, wide viewing angle switch control, and adaptive frame rate switch control, a first playback mode set is determined; the first playback mode set includes at least one playback mode supported by the display device. Based on the first playback mode set, the initial extended display identifier data of the display device is modified to the first extended display identifier data; The level of the hot-plug pin is adjusted according to a preset transmission protocol so that the external device can read the first extended display identifier data; Upon receiving second extended display identifier data confirmed based on the first extended display identifier data from the external device, a target playback mode set is determined from the second playback mode set based on a preset rule; the second extended display identifier data is used to characterize at least one second playback mode set jointly supported by the external device and the display device. The first extended display identifier data is modified to the third extended display identifier data according to the target playback mode set; The level of the hot-plug pin is adjusted according to the preset transmission protocol so that the external device can read the third extended display identifier data; Upon receiving external data from the external device that confirms support for the target playback mode set based on the third extended display identifier data, the display is controlled to play the image corresponding to the external data based on the target playback mode set; the target playback mode set includes at least one of the target playback modes.