Invention Grant
US08305492B2 Dual burst locked oscillator architecture for an analog television receiver
有权
用于模拟电视接收机的双脉冲锁定振荡器架构
- Patent Title: Dual burst locked oscillator architecture for an analog television receiver
- Patent Title (中): 用于模拟电视接收机的双脉冲锁定振荡器架构
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Application No.: US12759673Application Date: 2010-04-13
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Publication No.: US08305492B2Publication Date: 2012-11-06
- Inventor: Yongru Gu
- Applicant: Yongru Gu
- Applicant Address: US CA Lake Forest
- Assignee: Newport Media, Inc.
- Current Assignee: Newport Media, Inc.
- Current Assignee Address: US CA Lake Forest
- Agency: Rahman LLC
- Main IPC: H04N9/45
- IPC: H04N9/45

Abstract:
Color information decoding on a composite video signal that includes modulated color information for an analog television receiver. A first burst locked oscillator (BLO) operates in a first loop gain, and a second BLO operates in second loop gain and is operatively connected to the first BLO. The first loop gain is higher than the second loop gain. A method includes receiving, in a first burst accumulator, mixed down color information directly from a first phase detector without filtering the mixed down color information, converting the composite video signal to a burst gate signal, accumulating one or more of the burst gate signal, and calculating a frequency offset for the second BLO in the first BLO expedite the calculating of the frequency offset and to compensate for the second BLO operating in the second loop gain.
Public/Granted literature
- US20110249180A1 Dual Burst Locked Oscillator Architecture for an Analog Television Receiver Public/Granted day:2011-10-13
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