VGA hardware window control system

Details VGA hardware window control system VGA hardware window control system

1994-11-16

1996-03-19

Weldon, Ulysses

Computer graphics processing and selective visual display system

Display peripheral interface input device

Light pen for fluid matrix display panel

345115, 345 3, G09G 500

Patent

active

055006540

ABSTRACT:
A screen CRTC generates a sync signal or the like for controlling a screen area of 1024.times.768 pixels in accordance with a screen parameter, and a window CRTC controls a display of a window area in accordance with a window parameter. When the display start position of the window is detected by the screen CRTC, display control of the window area performed by the window CRTC is started, thereby sequentially reading VGA data from the start address of a VRAM and converting the VGA data into video data. This video data is supplied to a display monitor during the display period of the window area, thereby displaying the video data in the window area.

REFERENCES:
patent: 5065346 (1991-11-01), Kawai et al.
patent: 5111190 (1991-05-01), Zenda
patent: 5218274 (1993-06-01), Zenda
IMB, Personal System 2 Hardware Interface Technical Reference--Video Subsystems, Virtual Memory Description and XGA Implementation of Virtual Memory, Sep. 1992, Section 3.

Affiliated with

Also associated with

Rating

VGA hardware window control 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 VGA hardware window control system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and VGA hardware window control system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1961092