Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1990-09-21
1992-10-20
Groody, James J.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
341139, H04N 552
Patent
active
051574934
ABSTRACT:
Disclosed is an apparatus for the reception of video signals with a variable gain amplifier to hold the video signal between pre-determined limits. To control the gain of the amplifier, there is provision for a circuit that keeps the amplitude of the line synchronization pulse substantially constant. This circuit has, for example, an analog/digital converter with an output, one bit of which represents the sign of the difference between the line synchronization pulse and its prescribed value.
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Dorner Albert
Hamon Joel
Groody James J.
Laboratoire Europeen de Recherches Electroniques Appliquees Soci
Powell Mark R.
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