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1. 发明授权

US09438820B1 Systems and methods for processing composite video signals 有权
标题翻译：用于处理复合视频信号的系统和方法
公开(公告)号：US09438820B1
公开(公告)日：2016-09-06
申请号：US14613638
申请日：2015-02-04
申请人： Marvell International Ltd.
发明人： Yichen Liu , Hongyu Zhang , Wei Zheng , Yanwei Ji
IPC分类号： H04L7/00 , H04N5/265 , H04N5/04
CPC分类号： H04N5/06
摘要： System and methods are provided for processing composite video signals. The system includes: a clock synthesizer configured to generate a line lock clock signal; an interpolation unit configured to generate source data associated with a source composite video signal, the source composite video signal being related to a source clock signal; a buffer unit configured to store the source data based at least in part on the source clock signal and provide destination data based at least in part on the line lock clock signal; a signal processing unit configured to process the destination data to extract a synchronization component and determine a phase error between the synchronization component and the line lock clock signal. The clock synthesizer is further configured to adjust the line lock clock signal based at least in part on the phase error.
摘要翻译：提供了用于处理复合视频信号的系统和方法。该系统包括：时钟合成器，被配置为产生线路锁定时钟信号; 内插单元，被配置为生成与源复合视频信号相关联的源数据，源复合视频信号与源时钟信号相关; 缓冲单元，被配置为至少部分地基于源时钟信号来存储源数据，并且至少部分地基于线锁定时钟信号提供目的地数据; 信号处理单元，被配置为处理目的地数据以提取同步分量，并确定同步分量和线路锁定时钟信号之间的相位误差。时钟合成器还被配置为至少部分地基于相位误差来调整线路锁定时钟信号。

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