Gamma correction circuit for television

Details Gamma correction circuit for television Gamma correction circuit for television

H - Electricity

04

N

350/80

H04N 5/202 (2006.01) H04N 5/44 (2006.01)

Patent

CA 1128652

ABSTRACT A television gamma correction circuit in which a gamma corrector supplies an output signal having a mini- mum gamma equal to two, from which, relative to a linear in- put 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.

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