Facsimile and static presentation processing – Facsimile – Recording apparatus
Patent
1993-11-22
1996-06-04
Tran, Thai Q.
Facsimile and static presentation processing
Facsimile
Recording apparatus
360 371, 360 381, 360 53, 369 48, 358314, 358319, 371 31, H04N 594, G11B 509
Patent
active
055238564
ABSTRACT:
A synchronizing signal extracting apparatus comprising synchronizing signal detecting circuit for detecting a synchronizing signal of predetermined bits from entered digital data, synchronizing signal generating circuit adapted to be reset by an output of the synchronizing signal detecting circuit, the synchronizing signal generating circuit generating an output in a timing of said synchronizing signal, and synchronizing signal extracting circuit for outputting, as a synchronizing signal, a result of an OR operation performed on the output of said synchronizing signal detecting circuit and the output of said synchronizing signal generating circuit, the synchronizing signal extracting circuit changing a state thereof according to match/mismatch in timing between the output of said synchronizing signal detecting circuit and the output of said synchronizing signal generating circuit. The novel setup outputs correct synchronizing signals and data enable signal even if the detection of synchronizing signals is missed or erroneously made, reduces chances of the missed detection of synchronizing signals even when the signal-to-noise ratio of reproduced signal is poor at digital VTR variable-speed reproduction or high-speed search, and implements synchronizing signal extraction of high precision.
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Kawano Masaki
Seki Takahito
Takizawa Chihoko
Frommer William S.
Sinderbrand Alvin
Sony Corporation
Tran Thai Q.
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