Facsimile and static presentation processing – Facsimile – Recording apparatus
Patent
1994-07-21
1995-10-17
Groody, James J.
Facsimile and static presentation processing
Facsimile
Recording apparatus
358336, 360 15, H04N 591
Patent
active
054595835
ABSTRACT:
A video signal recording and/or reproducing apparatus includes a copy guard processing detecting current which can correctly judge whether or not a copy guard is applied to an input video signal and prevents copy guard processing from being applied to a video signal to which a copy guard is not applied. The copy guard processing detecting apparatus includes a first circuit for receiving an input video signal which includes a plurality of false synchronizing signals for prevention of duplication inserted in a vertical blanking interval thereof and for counting the number of the false synchronizing signals, a second circuit for counting the number of synchronizing signals in an image interval of the input video signal except the vertical blanking interval, a discriminating circuit for discriminating whether or not copy guard processing is applied to the input video signal from the count values of the first and second circuits, and a recording system for receiving and recording the input video signal based on the results of the copy guard discriminating operation.
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Grant Chris
Groody James J.
Maioli Jay H.
Sony Corporation
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