Clock synchronizing device, method and system

Abstract

The invention provides clock synchronizing device, method and system. The method comprises a video source terminal and a distributive processor; the distributive processor comprises a main controller; a digital video output interface of the video source terminal is connected with a digital video input interface of the distributive processor; a serial digital video data and a clock signal are output to the digital video input interface by the video source terminal through the digital video output interface; the digital video input interface of the distributive processor is used for converting a high-speed serial digital video data and the clock signal into parallel digital video data and video synchronizing signal to be output to the main controller; the main controller can be used for counting the video synchronizing signal according a local clock and then generating a second pulse which is synchronous to the video synchronizing signal; the clock drift correction parameters of the local clock can be calculated according to the second pulse, and the local clock can be corrected according to the clock drift correction parameters, so as to synchronize a system cloth. The clock synchronizing device, method and system have the advantages that the synchronizing technology is high in precision and low in cost.

Description

technical field [0001] The present invention relates to the technical field of clock synchronization, in particular to a clock synchronization device, a clock synchronization method, and a clock synchronization system. Background technique [0002] In a distributed system, clock synchronization is the key to ensure the normal operation of the system and improve the overall performance of the system, and it is also one of the focus of research in the distributed system. [0003] The so-called system clock synchronization does not require all clocks to be completely aligned with the unified standard clock, but only requires each distributed data processing node to know the clock difference between its own clock and the system standard clock at the comparison time and its drift correction parameters relative to the standard clock after comparison That's it. Correct the local clock according to the obtained clock drift correction parameters, or adjust the local working section ...

AI Technical Summary

Problems solved by technology

This method can achieve high synchronization accuracy, but it needs to increase the hardware cost of distributed processing and also need to lay special cables, which greatly increases the cost of using the large screen of the splicing wall

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