Computer graphics processing and selective visual display system – Display driving control circuitry – Display power source
Reexamination Certificate
2005-04-05
2005-04-05
Razavi, Michael (Department: 2675)
Computer graphics processing and selective visual display system
Display driving control circuitry
Display power source
C345S213000
Reexamination Certificate
active
06876358
ABSTRACT:
There is provided a multi-sync type of display apparatus that enables changes in input signals to be accurately determined while increasing the accuracy when identifying input synchronization signals. When input synchronization signals Wa are within a predetermined phase difference, a pseudo synchronization signal generation apparatus formed by a frequency detection section7and a pseudo synchronization signal generation section8generates pseudo synchronization signals Wd that are synchronized with the input synchronization signals Wa. If the input synchronization signals Wa exceed a predetermined phase difference, pseudo synchronization signals Wd that have the frequency of the synchronization signal directly before the input synchronization signals Wa are generated. A phase comparison section9compares the pseudo synchronization signals Wd and the input synchronization signals Wa, and outputs comparison result signals when the phase difference exceeds a predetermined phase difference. If the comparison result signals continue to be output for N number of times, a signal change determination section10outputs a signal change determination signal. A display control section5controls R, G, B signals and displays image signals on a display element6.Accordingly, it is possible to set the predetermined phase difference to a small value and increase the accuracy when identifying similar input synchronization signals, while also reducing erroneous operation by increasing the number N.
REFERENCES:
patent: 4860090 (1989-08-01), Murata et al.
patent: 5337023 (1994-08-01), Hobrecht
patent: 5686968 (1997-11-01), Ujiie et al.
patent: 5929711 (1999-07-01), Ito
patent: 6133900 (2000-10-01), Esaki
patent: 6333751 (2001-12-01), Torii et al.
patent: RE38537 (2004-06-01), Kim
patent: 0 463 418 (1992-01-01), None
patent: 6-112820 (1994-04-01), None
patent: 10-51272 (1998-02-01), None
patent: 10-271102 (1998-10-01), None
Amadiz Rodney
NEC-Mitsubishi Electric Visual Systems Corporation
Razavi Michael
LandOfFree
Multi-sync display apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Multi-sync display apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multi-sync display apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3411142