Contrast control for a backlit LCD
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 6, 1998
Issued Date -
N/A
app pub date -
Oct 6, 1997
filing date -
Apr 10, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A contrast controller for a liquid-crystal display maximizes the display contrast by using a light sensor to detect ambient light levels and light blocked by the LCD panel. The display contrast is maximized by maximizing the difference between the ambient and blocked light levels. Further contrast maximization is accomplished through variable control of the LCD backlight in accordance with sensed light levels.
First Claim
Family
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully