Digital correction of linear approximation of gamma

Details Digital correction of linear approximation of gamma Digital correction of linear approximation of gamma

1998-12-21

2000-10-24

Hsia, Sherrie

Television

Image signal processing circuitry specific to television

Gray scale transformation

348674, H04N 5202

Patent

active

06137542&

ABSTRACT:
A circuit for gamma correcting a video signal incorporates both linear approximation as well as a look-up table, in which the disadvantages of linear approximation, i.e., inaccurate representation of the gamma function, and of a gamma look-up table, i.e., low resolution at low grey levels, are minimized. The transfer function of the look-up table is chosen such that the inaccuracies of the linear approximation are compensated.

REFERENCES:
patent: 5408267 (1995-04-01), Main
patent: 5768442 (1998-06-01), ahn
"KS0127 Programmable Gamma Correction", Application Notes, Multimedia Video, Samsung Electronics.

Affiliated with

Also associated with

Rating

Digital correction of linear approximation of gamma does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Digital correction of linear approximation of gamma, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Digital correction of linear approximation of gamma will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1969862