Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1979-10-12
1981-12-29
Psitos, Aristotelis M.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
371 38, 371 40, 360 722, 360 33, 369 47, 369 53, 369221, H04N 576, G11C 2900, G06F 1110, G11B 1518
Patent
active
043085571
ABSTRACT:
In a video disc recording and playback system, the video fields on the disc are identified by digital information recorded during the vertical blanking interval. The recorded digital information includes in the order named, a Barker start code sequence, an error detection coset code and information bits which include a field number corresponding to the video field being recorded. The arrangement results in improved noise immunity and simpler decoding hardware in the video disc player. The digital information is utilized to control a number of functions during the playing of a video disc record such as the calculation and display of elapsed playing time, lifting the stylus at the end of the program, and the detection and correction of locked groove conditions.
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Herrmann E. P.
Psitos Aristotelis M.
RCA Corporation
Tripoli J. S.
Whitacre E. M.
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