Clock synchronization module and its method for playing audio/video signal synchronously

Abstract

The invention relates to a clock synchronic module and its method for synchronic playing image and sound signal. The clock synchronic module comprises a locking phase circuit unit and a synchronic processing unit. The locking phase circuit unit is used to receive the output end clock signal, when the locking phase circuit unit first receives the output end clock signal; it generates the receiving end clock signal by the output end clock signal. The synchronic processing unit receives the program clock signal and the receiving end clock signal. When the output end clock signal is small, the receiving end clock signal generates and has M clocks; when the receiving end clock signal is small, it generates and has N clocks.

Description

technical field [0001] The invention relates to a clock module and a method for playing video and audio signals, and in particular to a clock synchronization module and a method for synchronously playing audio and video signals. Background technique [0002] Wireless broadband Internet access has entered the stage of popularization, such as international airports, hotels, coffee chain stores, etc., all have similar services. Users only need to use their notebook computers or PDAs, insert the wireless LAN card (Wireless LAN Card), and roam freely in the network world. The acquisition and utilization of network resources are not limited by space, which is fast and convenient. [0003] In a real-time encode system, using wireless broadband technology to transmit video and audio data and play it immediately is also an application of wireless technology. In addition to outputting video and audio data to the receiving module, the output module will also output a clock signal to t...

AI Technical Summary

Problems solved by technology

[0004] However, the clock signal output by the output module may be incomplete, or due to network delay, interference or other factors during transmission, the clock signal data received by the receiving module may be incomplete, resulting in failure due to unsynchronized signals. Play audio and video signals

Images