TWM450919U - Dual-view display device having OSD function - Google Patents

Description

Dual screen display device with OSD function

The present invention relates to a two-screen display device, and more particularly to a dual-screen display device having an on-screen display (OSD) function.

The traditional dual-screen display technology mainly uses "picture-in-picture" technology or "picture-painting" technology, so that display devices such as televisions can simultaneously display video from two sources. It can adjust the image of the current main screen by providing the displayed OSD prompt (such as an OSD menu or subtitle) through the OSD function of the display device. At this time, if the sub-screen is simultaneously displayed, it will be adjusted together with the adjustment of the main screen. In addition, only the main screen has audio output, and the sub-picture has no audio output, so this technology cannot adjust the parameters of the video and audio of the two pictures.

Later, as shown in Chinese Patent Application No. 201010281122.4, "Two-screen Same Screen Display Method Based on Synchronous Display", "Two-screen Same Screen Display Method Based on Asynchronous Display" of Application No. 201010281121.X, and "Two-screen Display Device" of Application No. 201110304235.6 And the implementation method, the dual-screen display technology disclosed in these patents adopts a dual-view display technology, which can realize full-size display of two images on the display area of the same display device, so that different people do not interfere with each other on the display device. At the same time, different pictures are viewed, but the method of adjusting the parameters of the video and audio of the dual picture is not explained and disclosed, so the OSD prompt displayed during the dual picture display may be staggered and segmented. Therefore, if the user needs to adjust the video and audio parameters of the dual screen through the OSD prompt, it is necessary to exit the dual screen, and after displaying only one of the screens to be adjusted on the display area, the OSD prompt is superimposed and displayed thereon, but This will stop displaying another screen and interfere with the viewing of the user of this way, which brings inconvenience to the user. Therefore, this technology can only display the dual screen, but can not display the video and audio of the dual screen in the dual screen display. Make parameter adjustments.

The purpose of this creation is to propose a dual-screen display device with OSD function, which can provide parameter adjustment of the dual-screen video and audio through the OSD function provided by the OSD function during dual-screen display.

In order to achieve the above object, the present invention proposes a dual-screen display device with an OSD function, including a signal input module, an instruction input module, a video processing module, a dual-image processing module, and a display module. The signal input module is used for inputting a two-picture video signal or two single-picture video signals. The command input module is provided with a switch button, and the switch button is used for transmitting a control command of the control right, and the user switches the corresponding channel of the screen for adjusting the video and audio parameters by switching the button. The video processing module is electrically connected to the signal input module and the command input module, and is configured to process the dual-screen video signal to generate two independent images or directly obtain two independent images from the two single-screen video signals. Then, the OSD prompt is superimposed on the video frame of the screen corresponding to the channel currently having the control right, and then the two screens are processed and output. The dual-screen processing module is electrically connected to the video processing module, and is configured to perform dual-picture processing on the signal output by the video processing module. The display module is electrically connected to the dual-screen processing module for processing the signals output by the dual-image processing module.

In an embodiment of the present invention, the dual-screen display device further includes a transmitting module, and the transmitting module is electrically connected to the dual-screen processing module, and is configured to synchronously send a control signal to the receiving end when the dual-picture is displayed asynchronously to control the receiving. The shutter is switched in cooperation with the end. The command input module includes a remote controller, a mouse or a keyboard. The dual image processing module includes a three-dimensional processing module.

This creation adopts the above technical scheme. Through the switch button on the command input module, the user can select the channel corresponding to the screen for which the video and audio parameters need to be adjusted; the dual screen display device superimposes the OSD prompt to the channel currently having control ( Or the appropriate position within the video frame of the corresponding picture of the main channel. After superimposing, the OSD prompt is synchronized with the video frame, and then output to the dual image processing module for dual image processing, and then sent to the display mode. The group is displayed so that the user can see the OSD prompt on the main channel screen, and there is no OSD prompt on the other non-main channel screen, and the effect of adjusting the parameter separation is achieved.

The above and other objects, features and advantages of the present invention will become more apparent and understood.

Please refer to FIG. 1. FIG. 1 is a schematic structural diagram of a dual-screen display device with an OSD function according to a preferred embodiment of the present invention. The dual screen display device comprises a signal input module 1, an instruction input module 2, a video processing module 9, a first data cache module 3, a first storage module 4, a dual image processing module 5, and a second data cache module. The group 6 , the second storage module 7 , the display module 8 and the transmitting module 10 , wherein the command input module 2 is provided with a switching button 11 . The output end of the signal input module 1 is electrically connected to the input end of the video processing module 9, and the output end of the command input module 2 is electrically connected to the input end of the video processing module 9, the video processing module 9 and the dual picture processing module. The output of the dual-screen processing module 5 is electrically connected to the input terminals of the display module 8 and the transmitting module 10, wherein the video processing module 9 is also associated with the first data cache module 3 and the first storage. The module 4 is electrically connected, and the dual-screen processing module 5 is also electrically connected to the second data buffer module 6 and the second storage module 7.

The signal input module 1 is used for inputting a video signal. The video signal can be a dual-screen video signal, and the video frame format can be a side-by-side (Side-by-Side) or a top-and-bottom (Half-up) format. It is processed by subsequent modules and divided into two independent pictures. The video signal can also directly be two video signals each having one picture, so the two single picture video signals can directly provide two independent pictures. In addition, the video signal may be a video signal of a type such as HDMI, YPbBr, VGA, AV or RF.

The command input module 2 can be a command input device such as a remote controller, a mouse or a keyboard, and is provided with a switch button 11 through which the user switches the corresponding channel of the screen for adjusting the video and audio parameters.

The video processing module 9 is configured to perform first-level processing on the video signal input by the signal input module 1. The first-stage processing mainly performs analog-to-digital conversion, signal sampling, decoding, scaling, and the like processing on the signal and encoding into an LVDS signal. After the output. The video processing module 9 first performs analog-to-digital conversion, signal sampling, decoding, and the like on the video signal to obtain a video frame of the video signal, and then recognizes and determines the format and structure of the video frame to perform segmentation acquisition or direct acquisition of the video frame. Two independent pictures are finally outputted after the two independent pictures are encoded into LVDS signals.

The first data cache module 3 is configured to cache data operations generated by the video processing module 9 when the signal is processed in the first stage. The first storage module 4 is configured to store the running program data file of the video processing module 9 and the user setting data information.

The dual-screen processing module 5 can be a three-dimensional (3D) processing module for performing second-level processing on the LVDS signal output by the video processing module 9, and the second-level processing mainly extracts signals and double-pictures. (or 3D) Analyze the operation and other processing and re-encode the output. The dual picture processing module 5 first extracts the LVDS signals to obtain the two independent pictures, and then re-encodes the output according to the display mode required by the back end. For example, in the case of the polarized two-picture display mode, the two independent pictures are sequentially displayed in a line, that is, the odd display lines and the even display lines in the full screen display respectively display the two independent pictures. In the shutter-type dual-screen display mode, the two independent screens are sequentially displayed in full screen, and the transmitting module 10 is controlled to synchronously send a control signal to the receiving end (such as shutter glasses) to control the receiving end to cooperate with the receiving end. Perform a shutter switch.

The second data cache module 6 is configured to buffer the data operation generated when the dual-screen processing module 5 performs the second-level processing on the signal. The second storage module 7 is configured to store the running program data file and the user setting data information of the dual screen processing module 5.

The display module 8 can be a liquid crystal display screen for processing the output of the dual screen processing module 5 for display.

The module 10 needs to be set in the shutter-type dual-screen display mode, and is used to display the two independent screens in the dual-screen processing module 5 through the display module 8 for full-screen display. When the dual screen is displayed asynchronously, the control signal is synchronously sent to the receiving end (such as shutter glasses) to control the receiving end to perform shutter switching cooperatively. Further, the control signal may be a signal of a type such as infrared, Bluetooth or Wi-Fi.

This creation is compatible with both single-screen and dual-screen displays, so when the dual-screen display device starts operating, it will first confirm whether it is to operate in single-screen or dual-screen display mode. In the single-screen display mode, the dual-screen display device is the same as the conventional display device. In the dual-screen display mode, the dual-screen display device can perform switching adjustment of the OSD display according to the current control right and the signal channel. The workflow is as follows: the dual-screen display device sets a switch button 11 in the command input module 2 to remotely control As an example, the remote controller is provided with a switch button 11 which can send a control command to switch the control right when the two-screen display device receives the switch command (display on a single screen) In the mode, the switch command is not responded, and at the same time, the corresponding OSD prompt is superimposed on the screen of the channel currently having the control right, so that the user A is currently viewing the A screen content of the A channel, and when the user presses the switch button 11 The video processing module 9 immediately switches the control right to the A channel, that is, the current A channel is processed as the main channel, and the OSD prompt is superimposed on the appropriate position within the video frame of the A picture of the main channel, and the OSD prompts after superimposing. Synchronization processing with the video frame is encoded as an LVDS signal, and then outputted by the dual-screen processing module 5 After the LVDS signal is processed by the dual screen, the output display module 8 performs display. At this time, the display module 8 displays the OSD prompt on the A screen where the current remote control is located. If the user A sees the viewed A screen at this time, The corresponding OSD prompt means that the user A obtains the control right of the channel where the current A picture is located. A user can operate the function buttons on the remote control to adjust the video and audio parameters of the current channel, if the user does not see the user. If the A picture displayed has a corresponding OSD prompt, it means that the user A does not have control of the current channel, and the control is in another screen. A user needs to press the switch button 11 again to complete the control right switch until the user sees it. The viewed A picture has a corresponding OSD prompt, which means that the A user obtains the control right of the current channel, and the A user can operate the function buttons on the remote controller to adjust the video and audio parameters of the channel where the current A picture is located.

The above processing method is specifically illustrated by the video signal having the Side-by-Side (Side) video frame format shown in FIG. 2, and the processing result for FIG. 2 is shown in FIG. 3 and FIG. 4A-4B. Show. 3 is a schematic diagram of the video frame superimposed OSD prompt after the first-level processing of the dual-screen video signal shown in FIG. 2, wherein the black area is the image of the OSD prompt, and the adjustment control of the A channel picture is currently The control right is in the A channel. After the dual screen processing, it can be seen as shown in Fig. 4A-4B. The user can see the OSD prompt on the A screen, and there is no OSD prompt on the B screen, and the effect of adjusting the parameter separation is achieved.

In this embodiment, the video signal with the format of the Side-by-Side (Video) frame shown in FIG. 2 is used for description. In practice, the creation is also applicable to the side-by-side (Side-by-Side, Full). ), video signals in the video frame format such as Top-and-Bottom, Half, Top-and-Bottom, Full, Frame Pack for progressive format.

Although the present invention has been disclosed in the above preferred embodiments, it is not intended to limit the present invention, and anyone skilled in the art can make some changes and refinements without departing from the spirit and scope of the present invention. The scope of protection is subject to the definition of the scope of the patent application.

1‧‧‧Signal input module

2‧‧‧Command input module

3‧‧‧First Data Cache Module

4‧‧‧First storage module

5‧‧‧Dual screen processing module

6‧‧‧Second data caching module

7‧‧‧Second storage module

8‧‧‧ display module

9‧‧‧Video Processing Module

10‧‧‧ Launching module

11‧‧‧Switch button

A, B‧‧‧ screen

FIG. 1 is a schematic diagram showing the structure connection of a dual-screen display device having an OSD function according to a preferred embodiment of the present invention.

2 is a schematic diagram of a video signal having a Side-by-Side (half) video frame format.

FIG. 3 is a schematic diagram of the output display after the OSD prompt is superimposed on the video frame shown in FIG. 2 .

4A-4B are schematic diagrams showing the output display after the dual-screen processing is performed on the video frame of FIG. 3 after the OSD prompt is superimposed.

1‧‧‧Signal input module

2‧‧‧Command input module

3‧‧‧First Data Cache Module

4‧‧‧First storage module

5‧‧‧Dual screen processing module

6‧‧‧Second data caching module

7‧‧‧Second storage module

8‧‧‧ display module

9‧‧‧Video Processing Module

10‧‧‧ Launching module

11‧‧‧Switch button

Claims (4)

A dual-screen display device with on-screen display (OSD) function, comprising:
a signal input module for inputting a dual picture video signal or two single picture video signals;
An instruction input module is provided with a switching button for transmitting a control switching command, and the user switches the channel corresponding to the screen for adjusting the video and audio parameters through the switching button;
a video processing module electrically connected to the signal input module and the command input module for processing the dual-screen video signal to generate two independent pictures or directly acquiring two independent pictures from the two single-picture video signals And then an OSD prompt is superimposed on the video frame of the picture corresponding to the channel currently having the control right, and then the two pictures are processed and output;
a dual-screen processing module electrically connected to the video processing module for performing dual-screen processing on the signal output by the video processing module; and a display module electrically connected to the dual-screen processing module The signal output from the dual image processing module is processed and displayed. The dual-screen display device with the OSD function as described in claim 1 further includes a transmitting module electrically connected to the dual-screen processing module for synchronizing when the dual screen is displayed asynchronously. Sending a control signal to a receiving end to control the receiving end to cooperatively perform shutter switching. The dual-screen display device with OSD function according to claim 1, wherein the command input module comprises a remote controller, a mouse or a keyboard. The dual-screen display device with OSD function according to claim 1, wherein the dual-screen processing module comprises a three-dimensional processing module.