Gamma correction circuit approximating non-linear digital conver

Details Gamma correction circuit approximating non-linear digital conver Gamma correction circuit approximating non-linear digital conver

1994-12-21

1995-12-05

Kostak, Victor R.

Television

Camera, system and detail

Combined image signal generator and general image signal...

348675, H04N 5202

Patent

active

054733723

ABSTRACT:
A gamma correction circuit for converting N-bit input data into M-bit output data by using a gamma correction curve approximated by a polygonal line having a plurality of straight line sections each having a different slope, the gamma correction circuit including a calculation circuit for executing conversion calculation for each the straight line section; and a control circuit for controlling the calculation circuit in accordance with a value of the input data so that the calculation circuit executes the conversion calculation for each the straight line section corresponding to the value.

REFERENCES:
patent: 4862270 (1989-08-01), Nishio
patent: 5208875 (1993-05-01), Virtue

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