Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1988-08-25
1991-02-19
Britton, Howard W.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358108, 358339, 358142, 358147, 360 18, 360 331, H04N 576, H04N 5262
Patent
active
049949160
ABSTRACT:
Apparatus for encoding identification information onto video signals provided by a plurality of video signal sources (cameras) comprises a switching arrangement for supplying, in sequence, a plurality of independent video signals, each from one of the video sources. An A/D converter converts signal components associated with single field intervals to digital representations and the digital representations are stored in digital memory banks. The memory banks can be divided into two separate halves, each capable of storing a single field of video signals. The memory banks are enabled by a head switching (frame rate) signal from an associated VCR so as to alternately store a single field of video in one half while reading out twice in succession from the other half video signals stored during a preceding frame interval. An encoder adds identification information to the video signals which are read out so as to distinguish those signals from the signals provided from other video sources.
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Gao Shiyang
Pshtissky Yacov
Britton Howard W.
Powell Mark R.
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