CN211606691U - Single-screen multi-picture sharing system - Google Patents

Abstract

The application provides a single-screen multi-picture sharing system, includes: the N external video playing units are used for respectively providing different independent video signals; the signal processing unit is used for acquiring each independent video signal and synthesizing the independent video signals into a shared video signal based on a preset frequency; the LED screen controller is used for receiving the shared video signal and converting the shared video signal into a corresponding electric signal; the LED display screen is used for receiving the electric signals and displaying corresponding video pictures; the signal emitter is used for respectively emitting switching frequency signals adapted for watching video pictures corresponding to different independent video signals to the outside according to the preset frequency of the shared video signal; the N liquid crystal glasses are used for respectively receiving switching frequency signals corresponding to an independent video signal and synchronously carrying out shielding and light transmission switching according to the switching frequency signals so as to watch a video picture corresponding to the independent video signal. The application can meet the requirement of simultaneously watching a plurality of pictures on one display device.

Description

A single-screen multi-screen sharing system

technical field

The present application relates to the technical field of display control, in particular to a single-screen multi-picture sharing system.

Background technique

With its advantages of high brightness and seamless splicing, LED displays have gradually replaced traditional splicing screens and projections and have been applied to all walks of life. According to the different usage scenarios, the display modes of the LED display are also varied. In addition to meeting the general display requirements, some special screen demonstrations are sometimes required. For example, the following scenario: at home on weekends, father and son want to watch TV, son wants to watch cartoons, father wants to watch football game, but only has one TV For viewing on devices with a small computer size, one party must make concessions.

Devices such as computers and mobile phones can meet the needs of individuals to watch videos flexibly, but it is somewhat inconvenient for many people to watch at the same time. With the improvement of people's material life, people prefer to watch on large terminal display devices, but most families have Configure a TV, and when the need to watch different videos arises, existing technology or equipment can't accommodate it.

If there is a way to simultaneously watch two programs on a large terminal display device such as a TV without affecting the display effect, this problem can be solved. The application of the present application can solve the problem of viewing multiple pictures simultaneously on one display device, and the multiple pictures do not interfere with each other.

Utility model content

In view of the above-mentioned shortcomings of the prior art, the technical problem to be solved by the present application is to provide a single-screen multi-picture sharing system for solving at least one problem in the prior art.

In order to achieve the above purpose and other related purposes, the present application provides a single-screen multi-picture sharing system, the system includes: N external video playback units for respectively providing different independent video signals; The external video playback unit is communicatively connected to obtain each of the independent video signals provided by each of the external video playback units, and to synthesize each of the independent video signals into a shared video signal based on a preset frequency; LED screen controller , connected in communication with the signal processing unit, for receiving the shared video signal and converting it into a corresponding electrical signal; the LED display screen, connected in communication with the screen controller, for receiving the electrical signal and displaying it Corresponding video images; a signal transmitter, connected in communication with the screen controller, and used to transmit externally according to the preset frequency of the shared video signal, respectively, for viewing different video images corresponding to the independent video signals. The corresponding switching frequency signal; N liquid crystal glasses, respectively connected to the signal transmitter in communication, for respectively receiving the switching frequency signal corresponding to one of the independent video signals, and synchronously blocking and blocking according to the switching frequency signal. Switching of light transmission for viewing the video picture corresponding to the independent video signal.

In an embodiment of the present application, each of the external video playback units has a Bluetooth communication module, and each of the liquid crystal glasses is further provided with a Bluetooth headset, and the external video playback unit is connected to the liquid crystal glasses by one-to-one communication. In order to transmit the audio signal synchronized with the independent video signal provided by the external video playback unit.

In an embodiment of the present application, the external video playback unit is any one or a combination of a TV, a smart phone, a notebook computer, a desktop computer, a tablet computer, MP4, and a projector.

In an embodiment of the present application, the signal processing unit is a video splicer.

In an embodiment of the present application, the signal processing unit alternately inserts each frame of each of the independent video signals in sequence according to a preset frequency, so as to superimpose and synthesize the shared video signal.

In an embodiment of the present application, the video images are video images corresponding to each of the external video playback units that are continuously and alternately displayed at the preset frequency.

In an embodiment of the present application, the liquid crystal glasses are composed of two black and white liquid crystal lenses and a frame; the black and white liquid crystal lenses can switch between blocking and light transmission at a certain frequency during operation; For through the human eye line of sight; the black lens is opaque to block the human eye line of sight.

In an embodiment of the present application, the two black and white liquid crystal lenses of the liquid crystal glasses are simultaneously switched to a white lens or a black lens according to a certain frequency.

In an embodiment of the present application, when the preset frequency is F, the switching frequency of the switching frequency signal is F/N, where N is greater than or equal to 2; The difference is 1/F second.

As described above, a single-screen multi-picture sharing system of the present application includes: N external video playback units for respectively providing different independent video signals; a signal processing unit for communication and connection with each of the external video playback units, for acquiring each of the independent video signals provided by each of the external video playback units, and synthesizing each of the independent video signals into a shared video signal based on a preset frequency; an LED screen controller, communicating with the signal processing unit connection for receiving the shared video signal and converting it into a corresponding electrical signal; an LED display screen, communicating with the screen controller, for receiving the electrical signal and displaying the corresponding video image; a signal transmitter, is connected in communication with the screen controller, and is used for externally transmitting switching frequency signals adapted for viewing video images corresponding to different independent video signals according to the preset frequency of the shared video signal; N The liquid crystal glasses are respectively connected in communication with the signal transmitter for respectively receiving the switching frequency signal corresponding to an independent video signal, and synchronously switching between blocking and light transmission according to the switching frequency signal for viewing The video picture corresponding to the independent video signal.

The single-screen multi-picture sharing system of the present application can meet the requirement of viewing multiple pictures simultaneously on one display device.

Description of drawings

FIG. 1 is a schematic structural diagram of a single-screen multi-picture sharing system according to an embodiment of the present application.

FIG. 2 is a schematic diagram of the principle of displaying a single screen and multiple pictures in a liquid crystal glasses according to an embodiment of the present application.

Detailed ways

The embodiments of the present application are described below through specific specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. The present application can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that the following embodiments and features in the embodiments may be combined with each other under the condition of no conflict.

It should be noted that the drawings provided in the following embodiments are only used to illustrate the basic concept of the present application in a schematic way, although the drawings only show the components related to the present application rather than the number, shape and For dimension drawing, the type, quantity and proportion of each component can be changed at will in actual implementation, and the component layout may also be more complicated.

As shown in FIG. 1 , a schematic structural diagram of a single-screen multi-picture sharing system in an embodiment of the present application is shown. As shown in the figure, the single-screen multi-screen sharing system 100 includes: N external video playback units 110 , a signal processing unit 120 , an LED screen controller 130 , an LED display screen 140 , a signal transmitter 150 , and N liquid crystal glasses 160 .

The present application mainly uses the LED display screen 140 with a high refresh rate, and cooperates with the switching of the switching frequency of the liquid crystal glasses 160 to realize the function that one display screen can display different pictures.

To put it simply, the system 100 first transmits the video signals provided by the multiple external video playback units 110 to the signal processing device through video cables or data cables, and the signal processing device sends the external video signals from different players. The video signal source is superimposed into a video signal source, and the video processing device transmits the superimposed signal to the LED screen controller 130 through the video cable. The LED screen controller 130 converts the video signal into an electrical signal and transmits it to the LED display screen 140 through a network cable. show. The signal transmitter 150 is connected to the LED screen controller 130 through a signal line and transmits a switching frequency signal to the outside. The liquid crystal glasses 160 receive the switching frequency signal from the signal transmitter 150 and change the switching frequency of the liquid crystal glasses 160 according to the signal to achieve different switching frequencies. frequency to see the purpose of different images.

The N external video playback units 110 are used to respectively provide different independent video signals.

In an embodiment of the present application, the external video playback unit 110 is any one or a combination of a TV, a smart phone, a notebook computer, a desktop computer, a tablet computer, MP4, and a projector. And the video source provided by the external video playback unit 110 can be from channels such as network video, cable TV source, external device projection, CD-ROM, U disk, etc., can support downloaded video, and can also support online live video,

In this application, corresponding to the video data, a solution is also provided for the corresponding audio data. Specifically: each of the external video playback units 110 has a Bluetooth communication module, and each of the liquid crystal glasses 160 is also provided with a Bluetooth headset, and the external video playback unit 110 is connected to the liquid crystal glasses 160 through one-to-one communication to transmit The audio signal synchronized with the independent video signal provided by the external video playback unit 110 .

The present application can utilize the existing one-to-many Bluetooth communication technology. A bluetooth module can connect to multiple bluetooth devices at the same time. Generally, one bluetooth can support 7 devices at the same time. Bluetooth is divided into master and slave devices. The Bluetooth master device can communicate with up to 7 devices in the Bluetooth network. In the system 100 described in this application, the liquid crystal glasses 160 used by the user to receive audio signals are regarded as the master device, and the external video playback unit 110 is regarded as the slave device. Data transfer can take place between a master and a slave, and the master can choose which slave to access. In this way, during the use of the system 100, by switching the channel of the Bluetooth device worn by the user to communicate with different signal source devices, the separation and selection of multiple audio frequencies can be realized.

For example, when an external video playback unit 110 is a mobile phone, the Bluetooth communication of the mobile phone is turned on, and then the Bluetooth headset of the liquid crystal glasses 160 is connected to the Bluetooth of the mobile phone, so that when the mobile phone inputs video like the system 100, it does not need to provide audio. data. In addition, in the present application, the time for video processing and output to the LED display screen 140 for display is very short, so the audio data is almost synchronized with the video image of the LED display screen 140 .

The signal processing unit 120, connected in communication with each of the external video playback units 110, is used to obtain each of the independent video signals provided by each of the external video playback units 110, and to synthesize each of the independent video signals into a preset based on the frequency of the shared video signal.

Preferably, the signal processing unit 120 described in this application is a video splicer. The video splicer is a high-tech device that divides a complete image signal into N blocks and distributes them to N video display units. It completes a large-screen dynamic image display screen composed of multiple ordinary video units, which can support the simultaneous connection of multiple video devices. The video splicer can also realize the combination of multiple physical outputs into an ultra-high-resolution display output with superimposed resolutions, so that the screen wall forms a logical display with ultra-high resolution, ultra-high brightness and large display size, and completes multiple Various display functions such as window opening, moving, zooming, etc. of the signal source on the screen wall. Video splicers are widely used in exhibition centers, monitoring centers, dispatching centers, command centers, conference rooms, exhibition centers, etc. Large-screen display system 100 in the hall is equipped with large-screen display equipment such as plasma and LCD TV.

Specifically, the process of synthesizing each of the independent video signals into a shared video signal based on a preset frequency by the signal processing unit 120 of the present application is to alternate each frame of each of the independent video signals according to the preset frequency. Insert, to superimpose and synthesize into the shared video signal.

It should be noted that the above solution is implemented at least based on the 60Hz preset frequency technology, then when there are two external video playback units 110, the switching frequencies of the two liquid crystal glasses 160 for watching videos are 30Hz respectively. When the preset frequency reaches 120Hz and 240Hz, by adjusting the preset frequency of the liquid crystal glasses 160, 4 and 8 different pictures can be displayed simultaneously.

The LED screen controller 130 is connected in communication with the signal processing unit 120 for receiving the shared video signal and converting it into a corresponding electrical signal, so that the LED display screen 140 (such as a TV or other large display device) can be adapted received and displayed accordingly.

The LED display screen 140 is connected in communication with the screen controller, and is used for receiving the electrical signal and displaying the corresponding video picture.

In an embodiment of the present application, the video images are the video images corresponding to each of the external video playback units 110 that are continuously and alternately displayed at the preset frequency. To put it simply, the picture displayed on the LED display screen 140 is that the video frames of the two video pictures are continuously displayed alternately, and the picture directly viewed by the human eye is messy. In some special scenarios, the system 100 of the present application can also be applied to occasions where confidentiality is required.

The signal transmitter 150 is connected in communication with the screen controller, and is used for externally transmitting, according to the preset frequency of the shared video signal, a switch adapted for viewing video images corresponding to different independent video signals. frequency signal.

In an embodiment of the present application, the switching frequency signals corresponding to the independent video signals differ by 1/F second. For example, when there are two external video playback units 110, normally two switching frequency signals (with the same frequency) need to be sent, but a time difference needs to be set between the two switching frequency signals, so as to realize viewing different video images.

The N liquid crystal glasses 160 are respectively connected in communication with the signal transmitter 150 for respectively receiving the switching frequency signal corresponding to one of the independent video signals, and synchronously switching between blocking and light transmission according to the switching frequency signal , for viewing the video picture corresponding to the independent video signal.

In an embodiment of the present application, when the preset frequency is F, the switching frequency of the switching frequency signal is F/N. It should be noted that the above solution is implemented at least based on the 60Hz preset frequency technology, then when there are two external video playback units 110, the switching frequencies of the two liquid crystal glasses 160 for watching video are 30Hz respectively. When the preset frequency reaches 120Hz and 240Hz, by adjusting the preset frequency of the liquid crystal glasses 160, 4 and 8 different pictures can be displayed simultaneously.

It should be noted that the imaging principle of the active 3D technology is used and improved in this application. The active 3D shutter technology realizes the 3D display effect according to the refresh time of the image frequency of the human eye. The principle of 3D imaging is to use two cameras to simulate the principle of observing things with human eyes, shoot two pictures with slightly different perspectives, and output them to two people's eyes respectively during playback. It can be said that 3D shooting is not difficult. There is no difference in technology, the difficulty is how to only see the designated picture with two eyes. Active shutter 3D technology, also known as time division shading technology or liquid crystal time division technology, is mainly realized by liquid crystal glasses. Its spectacle lenses are essentially two LCD screens that can be controlled on/off respectively. The liquid crystal layer in the eyes has two states of black and white. Usually it is displayed as white, that is, in a transparent state, and it will turn black after power-on. Accurate synchronization between the 3D eye and the screen is achieved through a signal transmitter.

For example, the principle of realizing 3D viewing effect through liquid crystal glasses is as follows: the left and right eye pictures will be alternately played on the display screen. When the left picture is played, the left glasses are turned on, the right glasses are turned off, and the audience's left eye sees the picture that needs to be seen by the left eye. , the right eye sees nothing. When playing the right-eye picture, the right eye sees the right picture, but the left eye cannot see the picture, so that the left and right eyes can see the left and right pictures respectively, so as to realize the 3D stereo effect. This process alternates at least 120 times per second, so that the human eye can enjoy a coherent and non-flickering 3D picture.

However, it should be noted that the principle of the present application is not to present a 3D picture on the display screen, but to present a picture of multi-picture fusion, which is obviously different from the technical solution and technical effect of presenting a 3D picture on the display screen. In the present application, the liquid crystal glasses 160 are composed of two black and white liquid crystal lenses and a frame, the black and white liquid crystal lenses can switch between blocking and light transmission at a certain frequency during operation; wherein, the white lenses are transparent so as to pass through the line of sight of the human eye. ; The black lens is opaque to block the sight of the human eye. The display device matched with the glasses alternately displays images at the same frequency as the glasses, and the high-speed switching screen leaves the image that the LCD glasses 160 want you to see in the brain. Since the pictures of human eyes have a certain interval on the display device, the residual pictures are processed and overlapped by the brain again, and the original video picture is formed.

For ease of understanding, reference may be made to the schematic diagram shown in FIG. 2 . As shown in the figure, the first column indicates that when the LED display 140 displays a frame of video A corresponding to an external video playback unit 110 , the liquid crystal glasses a are transparent and the liquid crystal glasses a are shielded. The second column indicates that when the LED display 140 displays a frame of video B corresponding to another external video playback unit 110 , the liquid crystal glasses b are shielded and the liquid crystal glasses b are transparent at this time.

In addition, in the present application, the two black and white liquid crystal lenses of the liquid crystal glasses 160 are simultaneously switched to white lenses or black lenses at a certain frequency. This is different from the need to alternate black and white switching between the left and right lenses to achieve 3D images on the display.

To sum up, a single-screen multi-picture sharing system provided by the present application includes: N external video playback units for respectively providing different independent video signals; a signal processing unit for communicating with each of the external video playback units connected to obtain each of the independent video signals provided by each of the external video playback units, and to synthesize each of the independent video signals into a shared video signal based on a preset frequency; an LED screen controller, and the signal processing The unit communication connection is used to receive the shared video signal and convert it into a corresponding electrical signal; the LED display screen, communicated with the screen controller, is used to receive the electrical signal and display the corresponding video image; signal transmission a controller, connected in communication with the screen controller, and used for externally transmitting switching frequency signals adapted for viewing video images corresponding to different independent video signals according to the preset frequency of the shared video signal; The N liquid crystal glasses 160 are respectively connected in communication with the signal transmitter for respectively receiving the switching frequency signal corresponding to one of the independent video signals, and synchronously switching between blocking and light transmission according to the switching frequency signal, for viewing the video picture corresponding to the independent video signal.

The present application effectively overcomes various shortcomings in the prior art and has high industrial application value.

The above-mentioned embodiments merely illustrate the principles and effects of the present application, but are not intended to limit the present application. Anyone skilled in the art can make modifications or changes to the above embodiments without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed in this application should still be covered by the claims of this application.

Claims (9)

1. A single-screen multi-view sharing system, the system comprising:

n external video playing units for respectively providing different independent video signals;

the signal processing unit is in communication connection with each external video playing unit and is used for acquiring each independent video signal provided by each external video playing unit and synthesizing each independent video signal into a shared video signal based on a preset frequency;

the LED screen controller is in communication connection with the signal processing unit and is used for receiving the shared video signal and converting the shared video signal into a corresponding electric signal;

the LED display screen is in communication connection with the screen controller and is used for receiving the electric signal and displaying a corresponding video picture;

the signal emitter is in communication connection with the screen controller and is used for respectively emitting switching frequency signals which are adapted to watch video pictures corresponding to different independent video signals to the outside according to the preset frequency of the shared video signal;

and the N liquid crystal glasses are respectively in communication connection with the signal emitter and are used for respectively receiving the switching frequency signal corresponding to the independent video signal and synchronously carrying out shielding and light transmission switching according to the switching frequency signal so as to watch a video picture corresponding to the independent video signal.

2. The system according to claim 1, wherein each of the external video playing units comprises a bluetooth communication module, each of the liquid crystal glasses further comprises a bluetooth earphone, and the bluetooth earphones are in one-to-one communication connection with the liquid crystal glasses through the external video playing units to transmit audio signals synchronized with independent video signals provided by the external video playing units.

3. The system of claim 2, wherein the external video playback unit is: any one or more of a television, a smart phone, a laptop, a desktop, a tablet, an MP4, and a projector.

4. The system of claim 1, wherein the signal processing unit is a video splicer.

5. The system according to claim 4, wherein the signal processing unit alternately inserts each frame of the independent video signals in sequence at a preset frequency to be superimposed and combined into the shared video signal.

6. The system according to claim 1, wherein the video frames are displayed alternately and continuously according to the predetermined frequency, and the video frames correspond to the external video playing units.

7. The system of claim 1, wherein the liquid crystal glasses are comprised of two black and white liquid crystal lenses and a frame; the black-white liquid crystal lens can perform shielding and light transmission switching at a certain frequency when in work; wherein, the white lens is transparent for the sight of human eyes; the black lens is opaque for blocking the vision of human eyes.

8. The system of claim 7, wherein the two black and white liquid crystal lenses of the liquid crystal glasses are switched to a white lens or a black lens simultaneously according to a certain frequency.

9. The system of claim 1, wherein when the predetermined frequency is F, the switching frequency of the switching frequency signal is F/N, where N is greater than or equal to 2; the difference between the switching frequency signals corresponding to the independent video signals is 1/F second.

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