Analog to digital converter having nonlinear amplitude transform

Details Analog to digital converter having nonlinear amplitude transform Analog to digital converter having nonlinear amplitude transform

1976-08-09

1980-08-12

Miller, Charles D.

Communications: electrical

Audible indication

Percussion-type sound producer

358 32, H03K 13175

Patent

active

042175747

ABSTRACT:
An analog to digital converter simultaneously digitizes a gamma corrected analog video signal and removes the gamma correction. The converter has a plurality of parallel analog comparators which compare the video signal amplitude with the amplitude of a plurality of different reference signals, each comparator providing an output representative of the respective comparison result. Each reference signal amplitude is a different multiple of a fraction, of a common reference signal, raised to the gamma power thereby removing the gamma correction. A decoder responsive to the output of the comparators generates the digital output signal in a preselected digital code.

REFERENCES:
patent: 3585631 (1971-06-01), McCown
patent: 3737894 (1973-06-01), Poretti
patent: 3949170 (1976-04-01), Shionoya

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