Audio and video signals synchronizing method, involves calculating time difference between time when scene change is detected and time when high frequency component is detected, and controlling delay times based on time difference

摘要

The method involves detecting a scene change in a displayed video and detecting a high frequency component having a predetermined pattern in an audio signal. A time difference is calculated between a time when the scene change is detected and a time when the high frequency component is detected. The delay times of the audio signal and the video signal are controlled according to the calculated time difference. Independent claims are also included for the following: (A) an audio and video synchronization apparatus, comprising a sync difference calculator (B) a computer readable medium having executable code to synchronize audio and video signals.