Jitter detecting apparatus for detecting a vtr...

Details Jitter detecting apparatus for detecting a vtr... Jitter detecting apparatus for detecting a vtr...

H - Electricity

04

N

352/18.4

H04N 5/95 (2006.01) H04N 9/893 (2006.01) H04N 9/896 (2006.01)

Patent

CA 1326900

ABSTRACT OF THE DISCLOSURE An improved jitter detecting method and an apparatus thereof, for detecting 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 specific zero-crossing timing of the abstracted carrier burst through a bandpass filter based on the trailing edge of a frequency-modulated sync signal at the reproduction.

565584

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