发明授权
- 专利标题: Time base correction apparatus
- 专利标题(中): 时基校正装置
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申请号: US288825申请日: 1988-12-23
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公开(公告)号: US5142377A公开(公告)日: 1992-08-25
- 发明人: Yoshiaki Moriyama , Toshio Mikami
- 申请人: Yoshiaki Moriyama , Toshio Mikami
- 申请人地址: JPX Tokyo
- 专利权人: Pioneer Electronic Corporation
- 当前专利权人: Pioneer Electronic Corporation
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX63-84802 19880406; JPX63-84803 19880406; JPX63-100588 19880422; JPX63-100589 19880422
- 主分类号: H04N9/79
- IPC分类号: H04N9/79 ; H04N9/88 ; H04N9/896
摘要:
A time base correction apparatus includes a feedback loop for performing time base correction of an input signal by detecting a time base error component of the input signal and a filter having an amplitude characteristic approximating an open loop characteristic of the feedback loop for receiving the time base error component. The input signal whose time base error is corrected by the feedback loop is treated by time base correction by a feed forward operation using an output signal of the filter. With this feature, a time base error which was not removed by the feedback loop is further corrected, and an effective time base correction is performed also for high frequencies.
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