CN219536172U - Video signal transmission system and vehicle - Google Patents

Abstract

The application discloses a video signal transmission system and a vehicle, which relate to the technical field of communication. The video signal transmission system includes: a first interface, a video signal processing circuit and N second interfaces, wherein N is an integer greater than 1; the first end of the video signal processing circuit is electrically connected to the first end of the first interface, and the video The second end of the signal processing circuit is electrically connected to the first end of the second interface; the second end of the first interface is electrically connected to the output end of the video signal output source; the second interface is used to electrically connect the display device; the video signal processing circuit It includes a video signal duplication unit; the video signal duplication unit is used to duplicate the video signal output by the first interface, and transmits the duplicated video signal to the second interface; the video signal processing circuit is used to transmit the video signal output by the first interface to the second interface. Two interfaces. According to the embodiment of the present application, the video output effect can be improved.

Description

Video signal transmission system and vehicle

technical field

The present application belongs to the technical field of vehicles, and in particular relates to a video signal transmission system and a vehicle.

Background technique

Since the development of multimedia technology requires a higher data transmission rate between the peripheral and the host, the Universal Serial Bus (USB) technology emerges as the times require.

However, in the related art, existing vehicles can only play video through the vehicle display screen. When multiple users watch videos through a vehicle-mounted display screen, since the users are in different locations, the video output effects corresponding to different locations are different, and there is a problem of poor video output effects.

Utility model content

Embodiments of the present application provide a video signal transmission system and a vehicle, which can solve the problem of poor video output effect in the related art and can improve the video output effect.

In the first aspect, an embodiment of the present application provides a video signal transmission system, including: a first interface, a video signal processing circuit, and N second interfaces, where N is an integer greater than 1;

The first end of the video signal processing circuit is electrically connected to the first end of the first interface, and the second end of the video signal processing circuit is electrically connected to the first end of the second interface; the second end of the first interface is connected to the video signal output source The output end of the second interface is electrically connected to the display device; the video signal processing circuit includes a video signal duplication unit; the video signal duplication unit is used to duplicate the video signal output by the first interface, and transmit the duplicated video signal to the second Two interfaces;

The video signal processing circuit is used to transmit the video signal output by the first interface to the second interface.

In some optional implementation manners, the video signal processing circuit further includes N protocol communication units;

The first end of the protocol communication unit is electrically connected to the second end of the video signal duplication unit, and the second end of the protocol communication unit is electrically connected to the second end of the second interface;

The protocol communication unit is used for communicating the charging protocol with the display device, and sending the first hot plug detection signal to the video signal duplication unit when the result of the charging protocol communication is passed.

In some optional implementation manners, the video signal processing circuit further includes N multiplexing units;

The first end of the multiplexing unit is electrically connected to the third end of the video signal duplication unit, the second end of the multiplexing unit is electrically connected to the third end of the protocol communication unit, and the third end of the multiplexing unit electrically connected to the first end of the second interface;

The protocol communication unit is also used to determine the insertion type of the display device corresponding to the charging protocol communication result, and send the insertion type to the multiplexing unit;

The multiplexing unit is used for adjusting the signal line between the multiplexing unit and the second interface when the video signal is received and the insertion type is reverse insertion.

In some optional implementation manners, the third end of the first interface is electrically connected to the fourth end of the protocol communication unit, and the first interface is also used to supply power to the protocol communication unit.

In some optional implementation manners, the fifth terminal of the protocol communication unit is electrically connected to the display device through the second interface, and the protocol communication unit is also used to supply power to the display device.

In some optional embodiments, the system also includes:

A power supply controller, the first end of the power supply controller is electrically connected to the second end of the first interface;

The power supply controller is configured to send power supply information corresponding to the charging protocol of the display device to the first interface when it is detected that the display device is electrically connected to the second interface;

The first interface is used to supply power to the protocol communication unit by using the power supply information;

The protocol communication unit is used for level conversion and power supply for the display device.

In some optional embodiments, the system also includes:

A universal serial bus hub, the first end of the universal serial bus hub is electrically connected to the second end of the first interface, and the second end of the universal serial bus hub is electrically connected to the third end of the second interface;

The universal serial bus hub is used to transmit control signals, equipment information and equipment attitude signals, the control signals are used to control the display device to output the video signal corresponding to the control signal, the equipment information is used to indicate the device type of the display device, and the equipment attitude signal is used to indicate Displays the attitude information of the device.

In some optional implementation manners, both the first interface and the second interface are Type-C interfaces.

In some optional implementation manners, the video signal duplication unit includes a video signal duplication chip.

In a second aspect, an embodiment of the present application provides a vehicle, including the video signal transmission system in the first aspect.

According to the video signal transmission system and the vehicle provided by the embodiment of the present application, the video signal output by the first interface is copied and transmitted to N second interfaces through the video signal processing circuit, and multiple users can respectively connect different display devices to the second The interfaces are connected in one-to-one correspondence, and each user can watch videos through different display devices, so that the output effects of multiple users at different positions are the same, thereby improving the video output effect.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the accompanying drawings that need to be used in the embodiments of the present application. Additional figures can be derived from these figures.

FIG. 1 is a schematic structural diagram of a video signal transmission system provided by an embodiment of the present application;

Fig. 2 is another schematic structural diagram of the video signal transmission system provided by the embodiment of the present application;

Fig. 3 is a schematic structural diagram of a vehicle provided by an embodiment of the present application.

Explanation of the symbols of the accompanying drawings:

1. Vehicles;

10. Video signal transmission system; 100. First interface; 200. Video signal processing circuit; 210. Video signal duplication unit; 220. Protocol communication unit; 230. Multiplexing unit; 300. Second interface; 400. Power supply controller; 500, universal serial bus hub;

20. Video signal output source;

30. Display device.

Detailed ways

In order to better understand the above purpose, features and advantages of the present application, the solution of the present application will be further described below. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

In the following description, a lot of specific details have been set forth in order to fully understand the present application, but the present application can also be implemented in other ways different from those described here; obviously, the embodiments in the description are only a part of the present application, and Not all examples.

In order to solve the problem in the prior art that when multiple users watch videos through a vehicle-mounted display screen, because the users are in different positions, the video output effects corresponding to different positions are different, and there is a problem that the video output effect is poor. Embodiments of the present application provide a video signal transmission system and a vehicle. Firstly, the video signal transmission system provided by the embodiment of the present application will be introduced below.

FIG. 1 is a schematic structural diagram of a video signal transmission system provided by an embodiment of the present application.

The video signal transmission system 10 provided in the embodiment of the present application can be applied to vehicles, and can also be applied to other devices that have interfaces and can play videos. As shown in FIG. 1 and FIG. 2 , the video signal transmission system 10 may include a first interface 100 , a video signal processing circuit 200 and N second interfaces 300 , where N is an integer greater than 1.

The first end of the video signal processing circuit 200 is electrically connected to the first end of the first interface 100, and the second end of the video signal processing circuit 200 is electrically connected to the first end of the second interface 300; the second end of the first interface 100 It is electrically connected to the output end of the video signal output source 20; the second interface 300 is used to electrically connect the display device 30; the video signal processing circuit 200 can include a video signal duplication unit 210; the video signal duplication unit 210 can be used to duplicate the first interface 100 output video signal, and transmit the copied video signal to the second interface 300 . The video signal processing circuit 200 is used to transmit the video signal output by the first interface 100 to the second interface 300 .

According to the video signal transmission system and the vehicle provided by the embodiment of the present application, the video signal output by the first interface is copied and transmitted to N second interfaces through the video signal processing circuit, and multiple users can respectively connect different display devices to the second The interfaces are connected in one-to-one correspondence, and each user can watch videos through different display devices, so that the output effects of multiple users at different positions are the same, thereby improving the video output effect.

The display device 30 may be configured to output a video corresponding to the video signal when receiving the video signal. The display device 30 may be a vehicle-mounted display screen, or may be a display device 30 such as a mobile phone or a computer.

The number of first terminals of the video signal output circuit may correspond to the number of the first interfaces 100 . For example, the number of first terminals of video signal output circuits may be equal to the number of first interfaces 100 .

The number of second terminals of the video signal processing circuit 200 may correspond to the number of first terminals of the second interface 300 . For example, the number of second terminals of the video signal processing circuit 200 may be equal to the number of first terminals of the second interface 300 .

The number of the second interfaces 300 may be equal to the number of the display devices 30 , or the number of the second interfaces 300 may be greater than the number of the display devices 30 . That is to say, all of the second interface 300 may be electrically connected to the display device 30 , or part of the second interface 300 may be electrically connected to the display device 30 .

During specific implementation, the number of the second interfaces 300 can be set according to actual conditions, for example, it can be 2, 3, 4, and so on.

Exemplarily, the video signal transmission system 10 may include one first interface 100 , one video signal processing circuit 200 and two second interfaces 300 .

Through the video signal duplication unit 210, the video signal output by the first interface 100 can be duplicated, and then the duplicated video signal can be transmitted to the second interface 300, so that the video signal output by the first interface 100 can be transmitted to N second interfaces 300. In some optional implementation manners, both the first interface 100 and the second interface 300 are Type-C interfaces.

In this embodiment, since both the first interface 100 and the second interface 300 are Type-C interfaces, and the Type-C port conforms to the standard Type-C protocol, the current and voltage corresponding to the charging protocol of the display device 30 can be determined, thereby Avoiding damage to the display device 30 due to excessive current and voltage received by the display device 30 due to wrong insertion of the display device 30 .

In other optional implementation manners, both the first interface 100 and the second interface 300 may be lightning interfaces.

The first end of the video signal duplication unit 210 may be electrically connected to the first end of the first interface 100 , and the second end of the video signal duplication unit 210 may be electrically connected to the first end of the second interface 300 .

Optionally, the video signal duplication unit 210 may include a video signal duplication chip, such as a VM5330BJG chip.

The quantity of the video signal duplicated by the video signal duplication unit 210 can correspond to the quantity of the second interface 300, for example, the quantity of the video signal duplicated by the video signal duplication unit 210 can be equal to the quantity of the second interface 300; the video signal duplication unit 210 duplicates The number of video signals can also correspond to the number of display devices 30 , for example, the number of video signals copied by the video signal copying unit 210 can be equal to the number of display devices 30 .

In some optional implementation manners, the video signal processing circuit 200 may also include N protocol communication units 220;

The first end of the protocol communication unit 220 is electrically connected to the second end of the video signal duplication unit 210, and the second end of the protocol communication unit 220 is electrically connected to the second end of the second interface 300;

The protocol communication unit 220 is configured to communicate with the display device 30 on the charging protocol, and if the result of the charging protocol communication is passed, send the first hot plug detection signal to the video signal duplicating unit 210 .

In this embodiment, the charging protocol is communicated with the display device 30 through the protocol communication unit 220, and when the result of the charging protocol communication is passed, the first hot plug detection signal is sent to the video signal duplication unit 210, which can trigger The video signal replicating unit 210 sends the video signal to the second interface 300 , and can transmit the video signal output by the first interface 100 to N second interfaces 300 .

The number of first terminals of the protocol communication unit 220 may correspond to the number of second terminals of the video signal duplication unit 210 . For example, the number of first terminals of the protocol communication unit 220 may be equal to the number of second terminals of the video signal duplication unit 210 .

The first hot plug detection (Hot Plug Detect) signal can be used to trigger the video signal duplication unit 210 to send the video signal to the second interface 300 .

When the second interface 300 is a Type-C interface, the first end of the protocol communication unit 220 can be electrically connected to the second end of the video signal duplication unit 210 through a configuration channel protocol (Configuration Channel, CC) line.

Optionally, if the result of the charging protocol communication is not passed, no operation is performed.

Exemplarily, the charging protocol may include PD 3.0 protocol, QC 2.0 protocol and so on.

Exemplarily, the protocol communication unit 220 is used for performing charging protocol communication with the protocol communication unit 220 of the source (Source) of the display device 30 .

In some optional implementation manners, the video signal processing circuit 200 may also include N multiplexing units 230;

The first end of the multiplexing unit 230 is electrically connected to the third end of the video signal duplication unit 210, the second end of the multiplexing unit 230 is electrically connected to the third end of the protocol communication unit 220, and the multiplexing unit The third end of 230 is electrically connected to the first end of the second interface 300;

The protocol communication unit 220 is further configured to determine the insertion type of the display device 30 corresponding to the charging protocol communication result, and send the insertion type to the multiplexing unit 230;

The multiplexing unit 230 is configured to adjust the signal line between the multiplexing unit 230 and the second interface 300 when a video signal is received and the insertion type is reverse insertion.

In this embodiment, the multiplexing unit 230 adjusts the signal line between the multiplexing unit 230 and the second interface 300 when the video signal is received and the insertion type is reverse insertion, so that the video frequency can be improved. The accuracy of signal transmission to the second interface 300 .

Exemplarily, the multiplexing unit 230 may include at least one multiplexer (Multiplexer, MUX).

Exemplarily, the second end of the multiplexing unit 230 may be electrically connected to the third end of the protocol communication unit 220 through an integrated circuit bus (Inter-Integrated Circuit, IIC).

The insertion type of the display device 30 may include forward insertion and reverse insertion.

Optionally, the multiplexing unit 230 is further configured to not perform any operation when a video signal is received and the insertion type is forward insertion, or no video signal is received.

Exemplarily, when the multiplexing unit 230 receives the video signal and the insertion type is positive insertion, it maintains outputting the A signal to the second interface 300 through the a signal line, and maintains outputting the B signal through the b signal line To the second interface 300; when the multiplexing unit 230 receives the video signal and the insertion type is reverse insertion, output the B signal to the second interface 300 through the a signal line, and output the A signal to the second interface 300 through the b signal line The second interface 300, at this time, the multiplexing unit 230 adjusts the a signal line and the b signal line, so that the A signal is output to the second interface 300 through the a signal line, and the B signal is output to the second interface 300 through the b signal line .

It should be noted that, in this embodiment, the first interface 100 and the second interface 300 are symmetrical interfaces, such as Type-C interface and lightning interface.

In some optional implementation manners, the third end of the first interface 100 is electrically connected to the fourth end of the protocol communication unit 220 , and the first interface 100 is also used to supply power to the protocol communication unit 220 .

Exemplarily, the third terminal of the first interface 100 may be the VIN terminal of the first interface 100 , and the fourth terminal of the protocol communication unit 220 may be the VIN terminal of the protocol communication unit 220 . That is to say, the VIN end of the first interface 100 can be electrically connected to the VIN end of the protocol communication unit 220, and then the first interface 100 can be the protocol communication unit 220 through the VIN end of the first interface 100 and the VIN end of the protocol communication unit 220. powered by.

In some optional implementation manners, the fifth terminal of the protocol communication unit 220 may be electrically connected to the display device 30 through the second interface 300 , and the protocol communication unit 220 may also be used to supply power to the display device 30 .

The fifth end of the protocol communication unit 220 may be electrically connected to the fourth end of the second interface 300 , and the fifth end of the second interface 300 is electrically connected to the display device 30 .

Exemplarily, the VBUS voltage output by the fifth terminal of the protocol communication unit 220 can supply power to the display device 30 through the second interface 300 .

In some optional embodiments, the system may also include:

A power supply controller 400, the first end of the power supply controller 400 is electrically connected to the second end of the first interface 100;

The power supply controller 400 is configured to send power information corresponding to the charging protocol of the display device 30 to the first interface 100 when it is detected that the display device 30 is electrically connected to the second interface 300 ;

The first interface 100 is configured to supply power to the protocol communication unit 220 by using the power supply information;

The protocol communication unit 220 is used for performing level conversion and supplying power to the display device 30 .

In this embodiment, the power supply controller 400 can control the current and voltage of the power supply to the display device 30 .

A first end of a power supply controller 400 (Power Delivery Controller, PD Controller) may be electrically connected to a second end of the first interface 100 through a CC line.

Optionally, the power supply controller 400 is further configured to not perform any operation when it is detected that the display device 30 is not electrically connected to the second interface 300 .

The power supply information corresponding to the charging protocol of the display device 30 may include at least one of the following:

current and voltage.

Exemplarily, when the power supply controller 400 detects that the display device 30 is electrically connected to the second interface 300 , it sends to the first interface 100 the power supply information corresponding to the charging protocol of the display device 30 as 2V voltage, and the first interface 100 A 2V voltage is provided to the protocol communication unit 220 . After receiving the 2V voltage, the protocol communication unit 220 performs level conversion on the 2V voltage, and outputs the level converted voltage to the display device 30 through the second interface 300 to supply power to the display device 30 .

In some optional embodiments, the system also includes:

A universal serial bus hub 500, the first end of the universal serial bus hub 500 is electrically connected to the second end of the first interface 100, and the second end of the universal serial bus hub 500 is electrically connected to the third end of the second interface 300 ;

The USB hub 500 is used to transmit control signals, device information and device attitude signals. The control signals are used to control the display device 30 to output video signals corresponding to the control signals. The device information is used to indicate the device type of the display device 30, and the device attitude signals It is used to indicate the posture information of the display device 30 .

The quantity of the second terminals of the universal serial bus hub 500 (Universal Serial Bus Hub, HSB HUB) may correspond to the quantity of the third terminals of the second interface 300 . For example, the number of second ports of the USB hub 500 may be equal to the number of third ports of the second interface 300 . The number of second terminals of the USB hub 500 may also correspond to the number of display devices 30 , for example, the number of second terminals of the USB hub 500 may also be equal to the number of display devices 30 .

Exemplarily, the control signal may include a volume adjustment signal, a touch control signal, a brightness adjustment signal, and the like. The device information may include device identification information, such as device model and other information. The device attitude signal may be an attitude signal of the display device 30 collected by the gyroscope.

Exemplarily, the second interface 300 can send a volume adjustment request to the first interface 100 through the USB 2.0 line and the Universal Serial Bus hub 500, and the first interface 100 can send a volume adjustment request to the second interface through the USB 2.0 line and the Universal Serial Bus hub 500. 300 outputs a volume adjustment signal corresponding to the volume adjustment request.

Exemplarily, after the first interface 100 receives the posture information of the display device 30 through the USB hub 500 , it can adjust the output interface of the display device 30 according to the posture information of the display device 30 .

Optionally, the second end of the power supply controller 400 may be electrically connected to the fourth end of the video signal duplication unit 210;

The video signal duplication unit 210 is also configured to output a second hot plug detection signal;

The power supply controller 400 performs protocol communication with the sink end of the display device 30 when receiving the second hot plug detection signal.

Based on the same or similar inventive concepts as the video signal transmission system 10 described above, the embodiment of the present application also provides a vehicle 1 .

In order to facilitate understanding of the foregoing embodiments, the foregoing embodiments are described below in conjunction with specific scenarios.

The video signal transmission system 10 can be connected to the first video output interface (i.e. the first interface 100) of the air-conditioning panel (i.e. the video signal output source 20) to obtain the video signal. When the video signal transmission system 10 detects the second video output interface ( That is, after the display device 30 is inserted into the second interface 300), the display device 30 communicates with the video signal transmission system 10 through the CC line, and then the protocol communication unit 220 converts the charging protocol (PD protocol) into an HPD signal (that is, the first thermal The high and low levels of the plug detection signal), and transmit the high and low levels to the video signal duplication unit 210, and the video signal duplication unit 210 sends the PD signal (that is, the video signal) to the multiplexing unit 230. The multiplexing unit 230 sends the PD signal to the display device 30 through the second video output interface.

Wherein, the first video output interfaces may all be virtual reality (Virtual Reality, VR) interfaces, or all may be augmented reality (Augmented Reality, AR) interfaces.

Fig. 3 is a schematic structural diagram of a vehicle provided by an embodiment of the present application.

As shown in FIG. 3 , the vehicle 1 provided in the embodiment of the present application may include the above-mentioned video signal transmission system 10 .

The above is only a specific implementation mode of the present application, and those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working process of the above-described system, circuit and unit can refer to the above-mentioned method embodiment. The corresponding process will not be repeated here. It should be understood that the protection scope of the present application is not limited thereto, and any person familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in the application, and these modifications or replacements should cover all Within the protection scope of this application.

It should be noted that in this article, relative terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply these No such actual relationship or order exists between entities or operations. Moreover, the term "comprising" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements but also other elements not expressly listed, Or also include elements inherent in such a process, method, article or apparatus. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising said element.

Claims (10)

1. A video signal transmission system, comprising: the video signal processing device comprises a first interface, a video signal processing circuit and N second interfaces, wherein N is an integer greater than 1;

the first end of the video signal processing circuit is electrically connected with the first end of the first interface, and the second end of the video signal processing circuit is electrically connected with the first end of the second interface; the second end of the first interface is electrically connected with the output end of the video signal output source; the second interface is used for being electrically connected with the display device;

the video signal processing circuit includes a video signal copying unit;

the video signal copying unit is used for copying the video signal output by the first interface and transmitting the copied video signal to the second interface; the video signal processing circuit is used for transmitting the video signal output by the first interface to the second interface.

2. The video signal transmission system according to claim 1, wherein the video signal processing circuit further comprises N protocol communication units;

the first end of the protocol communication unit is electrically connected with the second end of the video signal copying unit, and the second end of the protocol communication unit is electrically connected with the second end of the second interface;

the protocol communication unit is used for carrying out charging protocol communication with the display device, and sending a first hot plug detection signal to the video signal copying unit when the result of the charging protocol communication is passing.

3. The video signal transmission system according to claim 2, wherein the video signal processing circuit further comprises N multiplexing units;

the first end of the multiplexing unit is electrically connected with the third end of the video signal copying unit, the second end of the multiplexing unit is electrically connected with the third end of the protocol communication unit, and the third end of the multiplexing unit is electrically connected with the first end of the second interface;

the protocol communication unit is further configured to determine an insertion type of the display device corresponding to the result of the charging protocol communication, and send the insertion type to the multiplexing unit;

the multiplexing unit is used for adjusting a signal line between the multiplexing unit and the second interface when the video signal is received and the insertion type is reverse insertion.

4. The video signal transmission system of claim 2, wherein a third terminal of the first interface is electrically connected to a fourth terminal of the protocol communication unit, the first interface further configured to power the protocol communication unit.

5. The video signal transmission system of claim 2, wherein a fifth end of the protocol communication sheet is electrically connected to the display device through the second interface, and the protocol communication unit is further configured to supply power to the display device.

6. The video signal transmission system of claim 2, wherein the system further comprises:

the first end of the power supply controller is electrically connected with the second end of the first interface;

the power supply controller is used for sending power supply information corresponding to a charging protocol of the display device to the first interface under the condition that the display device is detected to be electrically connected with the second interface;

the first interface is used for supplying power to the protocol communication unit by utilizing the power supply information;

the protocol communication unit is used for carrying out level conversion and supplying power to the display device.

7. The video signal transmission system of claim 1, wherein the system further comprises:

a universal serial bus hub, a first end of the universal serial bus hub is electrically connected with a second end of the first interface, and a second end of the universal serial bus hub is electrically connected with a third end of the second interface;

the universal serial bus hub is used for transmitting control signals, equipment information and equipment posture signals, wherein the control signals are used for controlling the display device to output video signals corresponding to the control signals, the equipment information is used for indicating the device type of the display device, and the equipment posture signals are used for indicating the posture information of the display device.

8. The video signal transmission system of claim 1, wherein the first interface and the second interface are both Type-C interfaces.

9. The video signal transmission system of claim 1, wherein the video signal reproduction unit comprises a video signal reproduction chip.

10. A vehicle comprising a video signal transmission system as claimed in any one of claims 1 to 9.