Synchronization method and system for plurality of 4K-resolution video processors

A video processor and resolution technology, which is applied in the components, transmission systems, synchronization devices, etc. of the TV system to achieve the effect of maintaining frame synchronization

A video processor and resolution technology, which is applied in the components, transmission systems, synchronization devices, etc. of the TV system to achieve the effect of maintaining frame synchronization

CN112422770APending Publication Date: 2021-02-26XIAMEN RGBLINK SCI & TECH
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  • Synchronization method and system for plurality of 4K-resolution video processors
  • Synchronization method and system for plurality of 4K-resolution video processors
  • Synchronization method and system for plurality of 4K-resolution video processors

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Embodiment Construction

[0019] Such as figure 1 As shown, the present invention discloses a method for synchronizing multiple video processors with 4K resolution, which is specifically as follows:

[0020] Input 2K sync signal, separate 2K field sync signal (2K GENLOCK VS), and send it to 4K video processor;

[0021] The 4K video processor obtains its own 4K field synchronization signal (4K PO VS), and compares its phase with the 2K field synchronization signal (2KGENLOCK VS). Heavy number DIF_CLOCK) to generate a PWM adjustment signal for adjusting the frequency and phase of the synchronous clock. The synchronous clock generates a clock signal and inputs it to the 4K video processor to adjust the field synchronization signal of the 4K video processor, thus forming a phase-locked loop Adjust until the 2K field sync signal (2K GENLOCK VS) is the same as the 4K field sync signal (4K PO VS);

[0022] The 4K video processor outputs a 4K field sync signal (4K VS).

[0023] Such as figure 2 As shown, ...

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Abstract

The invention relates to a synchronization method and system for a plurality of 4K-resolution video processors, which synchronize the plurality of 4K video processors through 2K synchronization signals, so when pictures output by the 4K video processors are spliced or sent to next-level equipment, frame synchronization can be kept, and the phenomena of wrong frames, tearing and the like between images are avoided.

Description

technical field [0001] The invention relates to the technical field of video processors, in particular to a synchronization method for multiple 4K resolution video processors. Background technique [0002] Synchronization signal is very important in the field of video processor and TV playback. It is mainly used for image splicing synchronization between multiple devices, and frame synchronization of all TV players, monitors, cameras, etc. The sync formats and sync devices currently on the market only support resolutions below 2K. As 4K devices are used more and more widely, it is urgent to synchronize multiple 4K video processors, so that the splicing of images output by multiple processors will not cause wrong frames, tearing, etc. [0003] In view of this, the inventors made in-depth ideas on the problems existing in the synchronization processing process of the 4K resolution video processor, and thus produced the present invention. Contents of the invention [0004] ...

Claims

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Application Information

Patent Timeline
26 Feb 2021
Publication
CN112422770A
IPC
H04N5/08; H04N5/262; H04L7/00
CPC
H04N5/08; H04N5/2624; H04L7/0016
Inventors
胡宏清; 吕金文