Gradation driving circuit of liquid crystal display

Details Gradation driving circuit of liquid crystal display Gradation driving circuit of liquid crystal display

1997-02-20

1999-01-12

Wu, Xiao

Computer graphics processing and selective visual display system

Display driving control circuitry

Display power source

345 89, G09G 500

Patent

active

058596330

ABSTRACT:
A gradation driving circuit is provided that outputs gamma-corrected gray scale voltages. First and second multiplexors select first and second source voltages, respectively, in response to input data. The first source voltage is scaled by an appropriate factor corresponding to a required amount of gamma correction. The scaling factor is selected based on an additional output from the second multiplexor. The scaled first voltage is then subtracted from the second source voltage and the difference is output as the gray scale voltage. Alternatively, the gray scale voltage can be obtained by adding the first scaled source voltage and the second source voltage.

REFERENCES:
patent: 5122792 (1992-06-01), Stewart
patent: 5196738 (1993-03-01), Takahara et al.
patent: 5363118 (1994-11-01), Okumura
patent: 5534885 (1996-07-01), Saitoh
The Operational Amplifier, Chapter 6, pp. 188-211.

Affiliated with

Also associated with

Rating

Gradation driving circuit of liquid crystal display does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Gradation driving circuit of liquid crystal display, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gradation driving circuit of liquid crystal display will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1520560