Computer graphics processing and selective visual display system – Display driving control circuitry – Display power source
Reexamination Certificate
2004-12-07
2009-02-03
Tran, My-Chau T (Department: 2629)
Computer graphics processing and selective visual display system
Display driving control circuitry
Display power source
C345S087000, C345S090000, C345S095000, C345S098000, C345S212000, C345S213000, C323S369000
Reexamination Certificate
active
07486288
ABSTRACT:
In a drive unit for use with a matrix type display, a buffer circuit of the power supply circuit of the drive unit has an high-voltage first output circuit and a low-voltage second output circuit for generating the same output voltage under a normal operating condition, wherein the high-voltage output circuit has enhanced capability of providing output current to bring up the output voltage and the low-voltage output circuit has enhanced capability of providing output current to bring down the output voltage. A voltage detected at a node connected to the output end of the buffer circuit is compared with a bias voltage. Based on the comparison, the outputs of the first and second output circuits are switched over from one to the other as it is supplied to the display.
REFERENCES:
patent: 5343221 (1994-08-01), Arakawa et al.
patent: 5627457 (1997-05-01), Ishiyama et al.
patent: 5814981 (1998-09-01), Tsuchi et al.
patent: 6342782 (2002-01-01), Yamaguchi et al.
patent: 6426670 (2002-07-01), Tanaka
patent: 7289116 (2007-10-01), Tanaka
patent: 03-251817 (1991-11-01), None
patent: 04-143791 (1992-05-01), None
patent: 05-119297 (1993-05-01), None
patent: 09-203885 (1997-08-01), None
patent: 09-292596 (1997-11-01), None
patent: 2000-20147 (2000-01-01), None
patent: 2000-132147 (2000-05-01), None
patent: 2002-156935 (2002-05-01), None
patent: 2002-169501 (2002-06-01), None
patent: 2003-345311 (2003-12-01), None
patent: WO00/41028 (2000-07-01), None
Keating & Bennett LLP
Rohm & Co., Ltd.
Tran My-Chau T
LandOfFree
Display device driving apparatus and display device using... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Display device driving apparatus and display device using..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Display device driving apparatus and display device using... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4108225