Gamma correction circuit for television

Details Gamma correction circuit for television Gamma correction circuit for television

1978-10-31

1980-10-07

Murray, Richard

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

H04N 520

Patent

active

042272165

ABSTRACT:
A television gamma correction circuit in which a gamma corrector supplies an output signal having a minimum gamma equal to two, from which, relative to a linear input signal which is limited via a signal limiter circuit to the peak-white value, a correction signal is derived, with positive values only intended for increasing the gamma of the output signal of the gamma corrector. In this way scene details produced when the peak-white value is exceeded are prevented from being displayed with a lower picture brightness than associated with the peak-white value.

REFERENCES:
patent: 3970774 (1976-07-01), Bazin et al.
patent: 4018988 (1977-04-01), Seer, Jr.
patent: 4104678 (1978-08-01), Van Roessel

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