Backlight modulation circuit

Details Backlight modulation circuit Backlight modulation circuit

2007-07-09

2009-12-15

Owens, Douglas W (Department: 2821)

Electric lamp and discharge devices: systems

Current and/or voltage regulation

C315S307000

Reexamination Certificate

active

07633241

ABSTRACT:
An exemplary backlight modulation circuit (200) includes a pulse generator circuit (210) configured for generating a first square pulse; a voltage division circuit (230) configured for receiving the first square pulse and generating a second square pulse according to the first square pulse; an oscillator circuit (240) configured for generating a reference voltage; and an amplifier (200) comprising a negative input configured for receiving the second square pulse from the voltage division circuit, and a positive input configured for receiving the reference voltage from the oscillator circuit as a reference pulse signal, the amplifier being configured for generating a backlight adjusting signal according to the reference pulse signal and the second square pulse.

REFERENCES:
patent: 3781470 (1973-12-01), Horn
patent: 5272327 (1993-12-01), Mitchell et al.
patent: 6114814 (2000-09-01), Shannon et al.
patent: 6246220 (2001-06-01), Isham et al.
patent: 6885532 (2005-04-01), Noro

Affiliated with

Also associated with

Rating

Backlight modulation 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 modulation circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Backlight modulation circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4121864