Apparatus for adjusting video pedestal and peak white level

Details Apparatus for adjusting video pedestal and peak white level Apparatus for adjusting video pedestal and peak white level

1975-06-09

1976-07-20

Richardson, Robert L.

Telegraphy

Systems

Simplex-reversing periodic

178DIG26, H04N 516

Patent

active

039707776

ABSTRACT:
A video compensation network is disclosed in which the pedestal level and the peak white level of a composite video signal are automatically maintained within predetermined limits. The network includes two digital/feedback loops for independently detecting and generating correction signals which are used to control the respective pedestal and peak white levels. The feedback loops are activated to make incremental adjustments to the two levels once per video field.

REFERENCES:
patent: 3700794 (1972-10-01), Loose

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