CN113542876A - Method and system for realizing picture synchronization by LCD liquid crystal splicing - Google Patents
Method and system for realizing picture synchronization by LCD liquid crystal splicing Download PDFInfo
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- CN113542876A CN113542876A CN202110781786.5A CN202110781786A CN113542876A CN 113542876 A CN113542876 A CN 113542876A CN 202110781786 A CN202110781786 A CN 202110781786A CN 113542876 A CN113542876 A CN 113542876A
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 64
- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000005540 biological transmission Effects 0.000 claims abstract description 61
- 230000001360 synchronised effect Effects 0.000 claims abstract description 12
- 230000000694 effects Effects 0.000 claims abstract description 9
- 230000006835 compression Effects 0.000 claims description 7
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
- H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/4302—Content synchronisation processes, e.g. decoder synchronisation
- H04N21/4307—Synchronising the rendering of multiple content streams or additional data on devices, e.g. synchronisation of audio on a mobile phone with the video output on the TV screen
- H04N21/43072—Synchronising the rendering of multiple content streams or additional data on devices, e.g. synchronisation of audio on a mobile phone with the video output on the TV screen of multiple content streams on the same device
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/431—Generation of visual interfaces for content selection or interaction; Content or additional data rendering
- H04N21/4312—Generation of visual interfaces for content selection or interaction; Content or additional data rendering involving specific graphical features, e.g. screen layout, special fonts or colors, blinking icons, highlights or animations
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
The invention relates to a method and a system for realizing picture synchronization by LCD liquid crystal splicing, wherein the synchronization method comprises the following steps: generating video data with different sizes under the same video content for each video resource according to different ranges of network transmission rates; dividing an LCD liquid crystal array into a plurality of array blocks, wherein each array block corresponds to the same video resource; for each array block, acquiring the network transmission rate and the network delay corresponding to each LCD (liquid crystal display) screen in real time in a certain period; and according to the video data in the range of the network transmission rate matched with the network transmission rate obtained in the last step, selecting a time node with the longest network delay as a reference, and sequentially sending the video data with different definitions to the LCD liquid crystal screen in each array block according to the length of the delay to obtain a synchronous display effect. By adopting the technical scheme of the invention, the synchronous images of all groups of spliced screens can be generated, and the problem of video synchronization of any plurality of groups of spliced screens with different resolutions is further solved.
Description
Technical Field
The invention relates to the technical field of Internet, in particular to a method and a system for realizing picture synchronization by LCD liquid crystal splicing.
Background
The LCD liquid crystal array comprises a plurality of LCD liquid crystal screens arranged in an array mode, the existing LCD liquid crystal array usually adopts the same resolution and the same video data to carry out overall display, when diversified demands are met, for example, the LCD liquid crystal array is divided into groups, different groups display different video data, and the LCD liquid crystal screens in each group need to be synchronously displayed regardless of whether the resolution is the same or not.
Because the existing LCD liquid crystal array has single display and cannot meet diversified display requirements, the existing technology has problems and needs to be further improved, and the invention is developed based on the problems.
Disclosure of Invention
The invention provides a method and a system for realizing picture synchronization by LCD liquid crystal splicing aiming at the technical problems.
In order to achieve the purpose, the specific technical scheme of the invention is as follows:
a method for realizing picture synchronization by LCD liquid crystal splicing comprises the following steps:
s1, generating video data with different sizes under the same video content for each video resource according to different ranges of network transmission rate, and forming a video database mapped by the network transmission rate range and the video data;
s2, dividing an LCD liquid crystal array NxM into a plurality of array blocks ixj, wherein each array block ixj corresponds to the same video resource, i is more than or equal to 1 and less than or equal to N, j is more than or equal to 1 and less than or equal to M, and N, M is an integer more than 1;
s3, acquiring the network transmission rate and the network delay corresponding to each LCD liquid crystal screen in real time in a certain period for each array block i multiplied by j;
and S4, matching the video data in the network transmission rate range according to the network transmission rate obtained in S3, selecting a time node with the longest network delay as a reference, and sending the video data with different definitions to the LCD liquid crystal screen in each array block i multiplied by j according to the delay length to obtain a synchronous display effect.
Preferably, in step S1, the method for generating video data of different sizes under the same video content for each video resource according to different ranges of network transmission rates is as follows:
the larger the network transmission rate, the larger the corresponding video data.
Preferably, in step S1, the different sizes of video data correspond to different resolutions, and the larger the video data, the higher the resolution.
Preferably, in step S3, each LCD panel is wired or wirelessly connected in a transmission network.
Preferably, in step S1, the video database is stored in a cloud server.
The invention also provides a system for realizing the picture synchronization by LCD liquid crystal splicing, which comprises: the system comprises a cloud server, a video acquisition end, a control module and an LCD (liquid crystal display) array;
the video acquisition end is used for generating video data with different sizes under the same video content for each video resource according to different ranges of network transmission rate, forming a video database mapped by the network transmission rate range and the video data, and transmitting the video database to the cloud server;
the control module is used for acquiring the network transmission rate and the network delay corresponding to each LCD liquid crystal screen in real time within a certain period, feeding the network transmission rate and the network delay back to the cloud server, instructing the cloud server to match video data within a network transmission rate range according to the acquired network transmission rate, selecting a time node with the longest network delay as a reference, and sequentially sending video data with different definitions to the LCD liquid crystal screens in each array block i x j according to the delay length to obtain a synchronous display effect;
wherein i is more than or equal to 1 and less than or equal to N, j is more than or equal to 1 and less than or equal to M, and N, M is an integer more than 1.
Preferably, the control module is a program loaded on a cloud server.
The invention also provides a system for realizing the picture synchronization by LCD liquid crystal splicing, which comprises: the system comprises a cloud server, a video acquisition end, a control module and an LCD liquid crystal array NxM;
the video acquisition end is used for acquiring video resources and transmitting the video resources to the cloud server;
the cloud server is provided with a video compression program, the video compression program generates video data with different sizes under the same video content for each video resource according to different ranges of network transmission rate, a video database of which the network transmission rate range and the video data are mapped is formed, and the video data is stored in the cloud server;
the control module is used for acquiring the network transmission rate and the network delay corresponding to each LCD liquid crystal screen in real time within a certain period, feeding the network transmission rate and the network delay back to the cloud server, instructing the cloud server to match video data within a network transmission rate range according to the acquired network transmission rate, selecting a time node with the longest network delay as a reference, and sequentially sending video data with different definitions to the LCD liquid crystal screens in each array block i x j according to the delay length to obtain a synchronous display effect;
wherein i is more than or equal to 1 and less than or equal to N, j is more than or equal to 1 and less than or equal to M, and N, M is an integer more than 1.
Preferably, the control module is a program configured on a cloud server.
The invention has the following beneficial effects:
by adopting the technical scheme of the invention, the synchronous images of all groups of spliced screens can be generated, and the problem of video synchronization of any plurality of groups of spliced screens with different resolutions is further solved. In addition, the liquid crystal display can flexibly display, the whole LCD liquid crystal array can display the same picture, and can also be divided into a plurality of groups, each group displays the same picture, and different groups display different pictures, so that the requirement of diversified display is met.
Drawings
FIG. 1 is a flow chart of the method for realizing the picture synchronization by LCD liquid crystal splicing according to the present invention;
FIG. 2 is a schematic block diagram of an embodiment of a system for implementing frame synchronization by LCD liquid crystal splicing according to the present invention;
FIG. 3 is a schematic block diagram of a second embodiment of a system for implementing frame synchronization by LCD liquid crystal splicing according to the present invention.
Detailed Description
In order that those skilled in the art can understand and implement the present invention, the following embodiments of the present invention will be further described with reference to the accompanying drawings.
Referring to fig. 1, the method for implementing picture synchronization by LCD liquid crystal splicing provided by the present invention includes the steps of:
s1, generating video data with different sizes under the same video content for each video resource according to different ranges of network transmission rate, and forming a video database mapped by the network transmission rate range and the video data;
the method for generating video data with different sizes under the same video content for each video resource according to different ranges of network transmission rates comprises the following steps:
the larger the network transmission rate, the larger the corresponding video data. In addition, different sizes of video data correspond to different sharpness, with the larger the video data, the higher the sharpness. These video databases are preferably stored in a cloud server.
S2, dividing an LCD liquid crystal array NxM into a plurality of array blocks ixj, wherein each array block ixj corresponds to the same video resource, i is more than or equal to 1 and less than or equal to N, j is more than or equal to 1 and less than or equal to M, and N, M is an integer more than 1;
for example, for an LCD liquid crystal array of 16 × 16, it can be divided into 4 groups of 4 × 4 each displaying the same video material.
S3, acquiring the network transmission rate and the network delay corresponding to each LCD liquid crystal screen in real time in a certain period for each array block i multiplied by j;
the certain period may be 1 minute, 10 minutes or other time periods, depending on the actual situation.
And S4, matching the video data in the network transmission rate range according to the network transmission rate obtained in S3, selecting a time node with the longest network delay as a reference, and sending the video data with different definitions to the LCD liquid crystal screen in each array block i multiplied by j according to the delay length to obtain a synchronous display effect.
For example, in a certain group of array blocks 4 × 4, a total of 16 LCD liquid crystal panels all correspond to different network transmission rates and network delays, the 16 LCD liquid crystal panels are respectively matched with video data in a range of 16 network transmission rates under the same video resource, the longest network delay among 16 LCD liquid crystal panels is selected as a time node reference, the other 15 LCD liquid crystal panels respectively delay time difference values with the longest network delay time, and the matched video data is sent in a delayed manner according to the time difference values, so that when the video data are transmitted to the 16 LCD liquid crystal panels, pictures are synchronously displayed.
Referring to fig. 2 and 3, the present invention further provides a system for implementing picture synchronization by LCD liquid crystal splicing, including: the system comprises a cloud server, a video acquisition end, a control module and an LCD liquid crystal array NxM.
The video acquisition end can have a video compression function, for example, the video acquisition end is used for generating video data with different sizes under the same video content for each video resource according to different ranges of network transmission rate, forming a video database mapped by the network transmission rate range and the video data, and transmitting the video database to the cloud server.
The function can also be placed in the cloud server, and the video acquisition end is used for acquiring video resources and transmitting the video resources to the cloud server. For example, the cloud server is configured with a video compression program, and the video compression program generates video data of different sizes under the same video content for each video resource according to different ranges of network transmission rates, forms a video database in which the network transmission rate ranges and the video data are mapped, and stores the video database in the cloud server.
In addition, the control module may be independent of the cloud server (see fig. 2), or may be a program configured on the cloud server (see fig. 3). The control module is used for acquiring the network transmission rate and the network delay corresponding to each LCD liquid crystal screen in real time within a certain period, feeding the network transmission rate and the network delay back to the cloud server, instructing the cloud server to match video data within a network transmission rate range according to the acquired network transmission rate, selecting a time node with the longest network delay as a reference, and sequentially sending video data with different definitions to the LCD liquid crystal screens in each array block i x j according to the delay length to obtain a synchronous display effect;
wherein i is more than or equal to 1 and less than or equal to N, j is more than or equal to 1 and less than or equal to M, and N, M is an integer more than 1.
By adopting the technical scheme of the invention, synchronous images of all groups of spliced screens can be generated; and the whole LCD liquid crystal array can display the same picture, and can also be divided into a plurality of groups, wherein each group displays the same picture, and different groups display different pictures, so that the requirement of diversified display is met.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (9)
1. A method for realizing picture synchronization by LCD liquid crystal splicing is characterized by comprising the following steps:
s1, generating video data with different sizes under the same video content for each video resource according to different ranges of network transmission rate, and forming a video database mapped by the network transmission rate range and the video data;
s2, dividing an LCD liquid crystal array NxM into a plurality of array blocks ixj, wherein each array block ixj corresponds to the same video resource, i is more than or equal to 1 and less than or equal to N, j is more than or equal to 1 and less than or equal to M, and N, M is an integer more than 1;
s3, acquiring the network transmission rate and the network delay corresponding to each LCD liquid crystal screen in real time in a certain period for each array block i multiplied by j;
and S4, matching the video data in the network transmission rate range according to the network transmission rate obtained in S3, selecting a time node with the longest network delay as a reference, and sending the video data with different definitions to the LCD liquid crystal screen in each array block i multiplied by j according to the delay length to obtain a synchronous display effect.
2. The method for realizing frame synchronization of LCD liquid crystal splicing according to claim 1, wherein in step S1, the method for generating video data of different sizes of the same video content for each video resource according to different ranges of network transmission rate is as follows:
the larger the network transmission rate, the larger the corresponding video data.
3. The method for realizing the picture synchronization by LCD liquid crystal splicing according to claim 1 or 2, wherein in step S1, the video data with different sizes correspond to different definitions, and the larger the video data is, the higher the definition is.
4. The method for realizing the picture synchronization by LCD liquid crystal splicing according to claim 1, wherein in step S3, each LCD liquid crystal screen is connected in a transmission network by wire or wirelessly.
5. The method for realizing the picture synchronization by LCD liquid crystal splicing according to claim 1, wherein in step S1, the video database is stored in a cloud server.
6. A system for realizing picture synchronization by LCD liquid crystal splicing is characterized by comprising: the system comprises a cloud server, a video acquisition end, a control module and an LCD (liquid crystal display) array;
the video acquisition end is used for generating video data with different sizes under the same video content for each video resource according to different ranges of network transmission rate, forming a video database mapped by the network transmission rate range and the video data, and transmitting the video database to the cloud server;
the control module is used for acquiring the network transmission rate and the network delay corresponding to each LCD liquid crystal screen in real time within a certain period, feeding the network transmission rate and the network delay back to the cloud server, instructing the cloud server to match video data within a network transmission rate range according to the acquired network transmission rate, selecting a time node with the longest network delay as a reference, and sequentially sending video data with different definitions to the LCD liquid crystal screens in each array block i x j according to the delay length to obtain a synchronous display effect;
wherein i is more than or equal to 1 and less than or equal to N, j is more than or equal to 1 and less than or equal to M, and N, M is an integer more than 1.
7. The system for realizing the picture synchronization by LCD liquid crystal splicing according to claim 6, wherein the control module is a program loaded on a cloud server.
8. A system for realizing picture synchronization by LCD liquid crystal splicing is characterized by comprising: the system comprises a cloud server, a video acquisition end, a control module and an LCD liquid crystal array NxM;
the video acquisition end is used for acquiring video resources and transmitting the video resources to the cloud server;
the cloud server is provided with a video compression program, the video compression program generates video data with different sizes under the same video content for each video resource according to different ranges of network transmission rate, a video database of which the network transmission rate range and the video data are mapped is formed, and the video data is stored in the cloud server;
the control module is used for acquiring the network transmission rate and the network delay corresponding to each LCD liquid crystal screen in real time within a certain period, feeding the network transmission rate and the network delay back to the cloud server, instructing the cloud server to match video data within a network transmission rate range according to the acquired network transmission rate, selecting a time node with the longest network delay as a reference, and sequentially sending video data with different definitions to the LCD liquid crystal screens in each array block i x j according to the delay length to obtain a synchronous display effect;
wherein i is more than or equal to 1 and less than or equal to N, j is more than or equal to 1 and less than or equal to M, and N, M is an integer more than 1.
9. The system for realizing the picture synchronization by LCD splicing according to claim 8, wherein the control module is a program configured on a cloud server.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110781786.5A CN113542876A (en) | 2021-07-09 | 2021-07-09 | Method and system for realizing picture synchronization by LCD liquid crystal splicing |
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| CN202110781786.5A CN113542876A (en) | 2021-07-09 | 2021-07-09 | Method and system for realizing picture synchronization by LCD liquid crystal splicing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116405620A (en) * | 2023-06-06 | 2023-07-07 | 深圳市拓阔科技有限公司 | Video picture switching method, terminal equipment and readable storage medium |
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Application publication date: 20211022 |