Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Patent
1995-04-10
1997-12-16
Liang, Regina D.
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
345 94, G09G 336
Patent
active
056990758
ABSTRACT:
The present invention provides a display driving apparatus which can improve a picture quality by smoothly switching a partial writing mode and a refresh driving mode and also provides an information processing system having such a display driving apparatus. When a controller 7 discriminates the partial writing mode by a discrimination signal PH/RL, the controller generates a picture data request signal BUSY to a graphic controller 6, reads out data on a data line PIX DATA, and sets a scan address into a driver controller 12 in accordance with the value of the read data. When the discrimination signal PH/RL is switched from the partial writing mode to the refresh driving mode, in order to restart the refresh driving mode, the controller 7 directly rears a count value of an HSYNC counter 17 and calculates a scan address of the next refresh data in accordance with such a value and sets into the driver controller 12.
REFERENCES:
patent: 4655561 (1987-04-01), Kanbe et al.
patent: 4693563 (1987-09-01), Harada et al.
patent: 4857906 (1989-08-01), Conner
patent: 4964699 (1990-10-01), Inoue
patent: 5091723 (1992-02-01), Kanno et al.
patent: 5136282 (1992-08-01), Inaba et al.
Canon Kabushiki Kaisha
Liang Regina D.
LandOfFree
Display driving apparatus and information processing system 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 driving apparatus and information processing system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Display driving apparatus and information processing system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-211255