公开(公告)号：US20060103760A1

公开(公告)日：2006-05-18

申请号：US10533027

申请日：2003-10-31

申请人： Devon Johnson ,  Philip Junkersfeld

发明人： Devon Johnson ,  Philip Junkersfeld

IPC分类号： H04N9/475

CPC分类号： H04N21/4341 ,  H04N5/04 ,  H04N5/0736 ,  H04N5/4401 ,  H04N21/23406 ,  H04N21/2368 ,  H04N21/4305 ,  H04N21/44004

摘要： The disclosed embodiments relate to a system and method for maintaining synchronization between a video signal and an audio signal that are processed using clocks that are locked. The system may comprise a component that determines at least one initial level of a buffer, a component that determines at least one current level of the buffer, and a component that determines an amount of drift by comparing the at least one initial level of the buffer to the at least one current level of the buffer and adjusts the clocks to maintain the initial midpoint level of the buffer if the amount of drift reaches a threshold level.

摘要翻译： 所公开的实施例涉及用于维持使用被锁定的时钟来处理的视频信号和音频信号之间的同步的系统和方法。 该系统可以包括确定缓冲器的至少一个初始级别的组件，确定缓冲器的至少一个当前级别的组件以及通过比较缓冲器的至少一个初始级别来确定漂移量的组件 到缓冲器的至少一个电流电平，并且如果漂移量达到阈值水平，则调整时钟以维持缓冲器的初始中点电平。

公开(公告)号：US20060007356A1

公开(公告)日：2006-01-12

申请号：US10531695

申请日：2003-10-22

申请人： Phillip Junkersfeld ,  Devon Johnson

发明人： Phillip Junkersfeld ,  Devon Johnson

IPC分类号： H04N9/475

CPC分类号： H04N21/4392 ,  H04N5/04 ,  H04N5/4401 ,  H04N5/60 ,  H04N21/2368 ,  H04N21/4305 ,  H04N21/4307 ,  H04N21/4341

摘要： The disclosed embodiments relate to a system and method for maintaining synchronization between a video signal and an audio signal. The video signal and the audio signal are processed using clocks that a r e locked. The system may comprise a component that determines an initial audio input buffer level, a component that determines an amount of drift in the initial audio input buffer level and adjusts the clocks to maintain the initial audio input buffer level if the amount of drift reaches a first predetermined threshold, and a component that measures a displacement of a video signal associated with t h e audio signal in response to the adjusting of the clocks and operates to negate the measured displacement of the video signal if the measured displacement reaches a second predetermined threshold.

摘要翻译： 所公开的实施例涉及用于维持视频信号和音频信号之间的同步的系统和方法。 使用锁定的时钟处理视频信号和音频信号。 系统可以包括确定初始音频输入缓冲器电平的分量，确定初始音频输入缓冲器电平中的漂移量的分量，并且如果漂移量达到第一个，则调整时钟以维持初始音频输入缓冲器电平 以及响应于所述时钟的调整而测量与所述音频信号相关联的视频信号的位移的分量，并且如果所测量的位移达到第二预定阈值，则操作以否定所述视频信号的所测量的位移。