System, method and equipment for transmitting custom data of video blanking area
A technology of video data and transmission system, applied in the field of data processing, can solve the problems of low utilization rate of blanking area and poor scalability, and achieve the effect of reducing construction difficulty, reducing the number of cables, and increasing transmission distance
Active Publication Date: 2021-12-17
北京数字小鸟科技有限公司
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Problems solved by technology
[0003] In order to solve the above problems in the prior art, that is, the existing video transmission technology has poor scalability and low utilization of blanking areas, the present invention proposes a transmission system for custom data in video blanking areas, including: Data acquisition unit, video data cache unit, data amount recording unit, first line blanking zone time acquisition unit, second line blanking zone time acquisition unit, line blanking zone time correction unit, occupied time slot calculation unit and data transmission unit;
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[0037] The application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain related inventions, not to limit the invention. It should also be noted that, for the convenience of description, only the parts related to the related invention are shown in the drawings.
[0038] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and embodiments.
[0039] The invention provides a transmission system for custom data in video blanking areas. The system realizes long-distance, low-latency transmission of audio, video and custom data between nodes on an optical fiber uplink, and distinguishes between different videos Self-learning...
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The invention belongs to the field of data processing, particularly relates to a system, method and equipment for transmitting custom data of a video blanking area, and aims to solve the problems of poor expansibility and low utilization rate of the blanking area. The method comprises the following steps: collecting video data to a cache area; recording the current data size of the cache area; predicting a first line blanking area time Thblank1 through a video signal; learning a second row of blanking area time Thblank2 through a system clock and video data, correcting the first row of blanking area time Thblank1 so as to calculate a time slot occupied by each type of data in a current blanking area, and dynamically controlling the size of sent data according to a row synchronization signal hsync so as to carry out data sending. According to the method, self-learning and prediction are carried out on different video resolutions, the self-defined data transmission rate is dynamically adjusted, and the self-defined data is efficiently transmitted by utilizing the blanking area, so that the number of cables is reduced from the cost, the construction difficulty is reduced, and the transmission distance is increased.
Description
technical field [0001] The invention belongs to the field of data processing, and in particular relates to a transmission system, method and equipment for custom data in a video blanking area. Background technique [0002] In the field of professional audio-visual, as the complexity of the system increases, not only video and audio data need to be transmitted between nodes, but also custom data information such as keyboard and mouse, U disk, serial port and infrared. Existing technical solutions use different cables to transmit different data, such as video cables for video, audio cables for audio, etc. The number of cables increases with the increase of data types, resulting in high cost and complicated construction , and the transmission distance of ordinary cables is limited, and they are susceptible to environmental interference, resulting in a high bit error rate. The existing technology also uses one optical fiber to transmit multiple data, and transmits custom data i...
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IPC IPC(8): H04N7/088
CPCH04N7/088
Inventor 毛持恒李杰贺梓颜
Owner 北京数字小鸟科技有限公司