High speed image density converting apparatus

Details High speed image density converting apparatus High speed image density converting apparatus

1995-07-07

1998-02-17

Kostak, Victor R.

Television

Image signal processing circuitry specific to television

A/d converters

348678, H04N 514, H03M 112

Patent

active

057196389

ABSTRACT:
A high speed image density converting apparatus includes an amplifier for amplifying an analog video signal, an A/D converter for converting an output of the amplifier into a digital video signal, and capable of setting a reference voltage, a memory for storing an output image of the A/D converter, an arithmetic device for calculating a reference signal value on the basis of the data stored in the memory, and a D/A converter for converting the reference signal issued from the arithmetic device into an analog signal to be supplied as reference voltage to the A/D converter.

REFERENCES:
patent: 4768015 (1988-08-01), Amano
patent: 5087973 (1992-02-01), Kawahara
patent: 5121117 (1992-06-01), Rabii
patent: 5532758 (1996-07-01), Honma

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