Computer graphics processing and selective visual display system – Display driving control circuitry – Display power source
Patent
1995-04-17
2000-06-20
Hjerpe, Richard A.
Computer graphics processing and selective visual display system
Display driving control circuitry
Display power source
345212, 345132, G09G 500
Patent
active
060783192
ABSTRACT:
An integrated circuit such as a video controller may be provided with core logic circuitry using CMOS technology which may be operated at different supply voltages such as 3.3 or 5 Volts. At lower supply voltages, the CMOS circuitry may run slower. For a video controller, certain higher resolution, pixel depths, and refresh rates may require high speed operation of the video controller. A monitoring circuit monitors the video mode, pixel resolution, pixel depth, and refresh rate and determines which supply voltage may be used to operate the video controller at such levels. An output signal from the monitoring circuit may be used by a switching circuit to supply an appropriate supply voltage to the integrated circuit. At lower performance levels, the integrated circuit may be operated at lower voltages to conserve power.
REFERENCES:
patent: 4308532 (1981-12-01), Murphy
patent: 4853560 (1989-08-01), Iwamura et al.
patent: 5086295 (1992-02-01), Boettcher et al.
patent: 5300835 (1994-04-01), Assar et al.
patent: 5394028 (1995-02-01), Feddeler et al.
patent: 5444663 (1995-08-01), Furuno et al.
patent: 5524249 (1996-06-01), Suboh
patent: 5532717 (1996-07-01), Jones et al.
patent: 5559966 (1996-09-01), Cho et al.
patent: 5578957 (1996-11-01), Erhart et al.
patent: 5594360 (1997-01-01), Wojciechowski
patent: 5608864 (1997-03-01), Bindlish et al.
patent: 5611041 (1997-03-01), Bril et al.
patent: 5694143 (1997-12-01), Fielder et al.
Bril Vlad
Ho Thomas Shieh-Luen
Kenkare Sagar Waman
Strauss Edmund Christian
Bell Robert P.
Cirrus Logic Inc.
Hjerpe Richard A.
Nguyen Francis N.
Shaw Steven A.
LandOfFree
Programmable core-voltage solution for a video controller does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Programmable core-voltage solution for a video controller, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Programmable core-voltage solution for a video controller will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1857084