Video highlight attenuation processor

Details Video highlight attenuation processor Video highlight attenuation processor

1979-04-17

1980-07-22

Griffin, Robert L.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358243, H04N 5197

Patent

active

042142725

ABSTRACT:
A video highlight attenuation processor is disclosed which comprises an it circuit from which first and second signals corresponding to an input signal are derived, a peak detecting and inverting circuit which detects and inverts peak portions of the first signal to produce an intermediate signal, and a mixer which combines the intermediate signal and the second signal such that an output signal is produced which corresponds to the input signal with the D.C. level of the peak portions attenuated.

REFERENCES:
patent: 2414228 (1947-01-01), Gottier
patent: 2424349 (1947-07-01), Cawein
patent: 2978537 (1961-04-01), Kruse, Jr. et al.
patent: 3179743 (1965-04-01), Ahrons et al.
patent: 3558816 (1971-01-01), Wise
patent: 3560645 (1971-02-01), Wallace

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