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1.
公开(公告)号:US08165199B2
公开(公告)日:2012-04-24
申请号:US12254381
申请日:2008-10-20
申请人: Liming Xiu , Grady Cook , Daniel Dudek , Hongbing Lian , Yihe Hu , Christopher S. Tracy
发明人: Liming Xiu , Grady Cook , Daniel Dudek , Hongbing Lian , Yihe Hu , Christopher S. Tracy
CPC分类号: H04N21/4305 , H03L7/0996 , H03L7/18 , H04N21/42615 , H04N21/434
摘要: This invention uses a flying adder frequency synthesis circuit to provide the required frequency adjustments to accommodate the varying encoding density of a MPEG2 video data stream. This invention adjusts the local clock based on the information extracted from the program clock reference signal in the incoming data. This invention replaces an external or internal voltage-controlled crystal oscillator using a phase locked loop circuit on the video processing integrated circuit.
摘要翻译: 本发明使用飞行加法器频率合成电路来提供所需的频率调整以适应MPEG2视频数据流的变化的编码密度。 本发明基于从输入数据中的节目时钟参考信号中提取的信息来调整本地时钟。 本发明使用视频处理集成电路上的锁相环电路代替外部或内部压控晶体振荡器。
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2.
公开(公告)号:US20090103604A1
公开(公告)日:2009-04-23
申请号:US12254381
申请日:2008-10-20
申请人: Liming Xiu , Grady Cook , Daniel Dudek , Hongbing Lian , Yihe Hu , Christopher S. Tracy
发明人: Liming Xiu , Grady Cook , Daniel Dudek , Hongbing Lian , Yihe Hu , Christopher S. Tracy
IPC分类号: H04N7/12
CPC分类号: H04N21/4305 , H03L7/0996 , H03L7/18 , H04N21/42615 , H04N21/434
摘要: This invention uses a flying adder frequency synthesis circuit to provide the required frequency adjustments to accommodate the varying encoding density of a MPEG2 video data stream. This invention adjusts the local clock based on the information extracted from the program clock reference signal in the incoming data. This invention replaces an external or internal voltage-controlled crystal oscillator using a phase locked loop circuit on the video processing integrated circuit.
摘要翻译: 本发明使用飞行加法器频率合成电路来提供所需的频率调整以适应MPEG2视频数据流的变化的编码密度。 本发明基于从输入数据中的节目时钟参考信号中提取的信息来调整本地时钟。 本发明使用视频处理集成电路上的锁相环电路代替外部或内部压控晶体振荡器。
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