Simple gamma correction circuit for multimedia

Details Simple gamma correction circuit for multimedia Simple gamma correction circuit for multimedia

1997-05-05

2000-02-01

Ho, Tuan

Television

Camera, system and detail

Combined image signal generator and general image signal...

348674, 358518, H04N 5202

Patent

active

060209216

ABSTRACT:
A gamma correction circuit comprising circuit apparatus for approximating in linear translation circuits successive nonlinear portions of a gamma correction curve, apparatus for applying an input luminance (Y) signal to the circuit apparatus, and selection apparatus for selecting signals translated by any of the circuit apparatus as a gamma corrected output signal depending on whether the input signal falls within predetermined ranges approximately corresponding to the nonlinear portions of the gamma correction curve.

REFERENCES:
patent: 5473372 (1995-12-01), Nobuoka et al.
patent: 5473373 (1995-12-01), Hwung et al.
patent: 5818521 (1998-10-01), Hieda
"Fundamentals of Interactive Computer Graphics", by JD Foley and A. Van Dam, Addison-Wesley Publishing Company, copyright 1982 pp. 564-567.

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