Backlight control circuit having frequency setting circuit...

Electric lamp and discharge devices: systems – With load device temperature modifier

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C315S117000, C315S226000

Reexamination Certificate

active

07948186

ABSTRACT:
An exemplary backlight control circuit includes an inverter, a pulse width modulation (PWM) circuit, and a frequency setting circuit. The inverter is configured to provide an alternating current voltage to a lamp. The PWM circuit is configured to provide a pulse control signal to the inverter. The frequency setting circuit is configured to regulate a frequency of the pulse control signal provided by the PWM circuit according to a temperature of the lamp.

REFERENCES:
patent: 5907742 (1999-05-01), Johnson et al.
patent: 6654268 (2003-11-01), Choi
patent: 2004/0207532 (2004-10-01), Smithson
patent: 2006/0138972 (2006-06-01), Hsieh et al.
patent: 2006/0273742 (2006-12-01), Kim et al.
patent: 2000-350448 (2000-12-01), None
Ming-Dong Zhou, Min Jia , Digital Potentiometer and Its Applications, (1st Ed), published by Digitized Periodical in Feb. 28, 2006. See col. 1, paragraph 1, and figure 1 on p. 65.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Backlight control circuit having frequency setting circuit... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Backlight control circuit having frequency setting circuit..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Backlight control circuit having frequency setting circuit... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2703822

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.