Automatic level and gain control system

Details Automatic level and gain control system Automatic level and gain control system

1980-06-30

1982-03-02

Murray, Richard

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358169, H04N 552

Patent

active

043181295

ABSTRACT:
An automatic level and gain control system operable with a sensor to match the dynamic range of the display or other processing elements to the signal provided by the sensor for developing an image with improved dynamic range utilization (or contrast). Peak detection is provided with a conditional integrator so that the effect of high level narrow peaks is substantially suppressed. This system rapidly reaches and maintains a condition of providing the video signal to the display (or other processing) at a desired voltage level and over a desired dynamic range to continually maintain an image having optimum contrast within the dynamic range limitations of the processor or display system.

REFERENCES:
patent: 3569620 (1971-03-01), Baun
patent: 3914545 (1975-10-01), Engel

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