Single button contrast control

Details Single button contrast control Single button contrast control

1997-05-23

2000-04-04

Zimmerman, Brian

Communications: electrical

Continuously variable indicating

With meter reading

34082572, 4551514, G08C 1900

Patent

active

060466847

ABSTRACT:
A single button contrast control which can bi-directionally adjust a contrast function in one of two directions so as to increase or decrease the contrast of a display. An interrupt generator generates an interrupt for each user activation of a single button control key. A control circuit incrementally adjusts the contrast function in accordance with the interrupts generated. If no interrupts are generated within a predetermined period of time following a previous interrupt, the control circuit changes the direction in which the contrast is incrementally adjusted so that the next time a user activates the single button control key the control will be adjusted in the other direction.

REFERENCES:
patent: 4229765 (1980-10-01), Sanger
patent: 4385204 (1983-05-01), Wine
patent: 4796019 (1989-01-01), Auerbach
patent: 5201068 (1993-04-01), Kawashima
patent: 5422656 (1995-06-01), Allard et al.
patent: 5542103 (1996-07-01), Mottier et al.

Affiliated with

Also associated with

Rating

Single button contrast control does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Single button contrast control, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Single button contrast control will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-369480