发明名称 |
Jitter-detecting apparatus for a video tape recorder. |
摘要 |
<p>An improved jitter detecting method and an apparatus thereof, for detecting a jitter generated in a reproduced video signal of a VTR or video disc wherein a frequency-modulated carrier of a video signal is recorded by synchronizing the leading edge of a sync signal with the phase of the forefront carrier of a constant frequency carrier train corresponding to a sync tip for every horizontal period at the time of a frequency-modulation, and from the reproduced frequency-modulated carrier the phase-reset constant frequency carrier train is abstracted as a reference burst signal, thereby to be capable of removing a time-base error by detecting a specifie zero-crossing timing of the abtracted carrier burst through a bandpass filter based on the tailing edge of a frequency-modulated sync signal at the reproduction.</p> |
申请公布号 |
EP0289046(A2) |
申请公布日期 |
1988.11.02 |
申请号 |
EP19880106916 |
申请日期 |
1988.04.29 |
申请人 |
SHARP KABUSHIKI KAISHA |
发明人 |
IWAMURA, SOICHI;MURAKAMI, SATOSHI;ISHIKAWA, MASAKAZU;KOIDE, NAOKI |
分类号 |
H04N9/893;H04N9/896 |
主分类号 |
H04N9/893 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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