Dual-mode graphics controller with preemptive video access

Details Dual-mode graphics controller with preemptive video access Dual-mode graphics controller with preemptive video access

1993-09-10

1998-05-12

Powell, Mark R.

395503, 395515, 395521, 395478, G06T 160

Patent

active

057520100

ABSTRACT:
A method and architecture for a graphics controller chip. The graphics controller has a display memory for storing video and graphics data. It also has a logic controller, connected to the memory, for performing logic operations on data stored in the memory. Video and graphics data is made available to the graphics controller at a single access port. The graphics controller also has an address range detector for checking the address of the data provided to the port and for disabling logical operations of the logic controller when the address indicates the presence of video data. The video data is thereafter transferred to the display memory on a priority basis.

REFERENCES:
patent: 4439760 (1984-03-01), Fleming
patent: 4550315 (1985-10-01), Bass et al.
patent: 4868557 (1989-09-01), Perlman
patent: 4928253 (1990-05-01), Yamauchi et al.
patent: 4954818 (1990-09-01), Nakane et al.
patent: 5170154 (1992-12-01), Mantopoulos et al.
patent: 5245322 (1993-09-01), Dimwiddie, Jr. et al.
patent: 5264837 (1993-11-01), Buehler
patent: 5276437 (1994-01-01), Horvath et al.
Ron Wilson and Junko Yoshida, "Competing Spec Comes As A Surprise--Intel, ATI in race against VESA bus", Electronic Engineering Times, Aug. 9, 1993.
K. M. Chang et al. "A network Interface for Real-Time Video Services on a High-Speed Multimedia LAN", ICCS/ISITA '92, 1992.
Brian Case, "Windows NT Offers RISC a Choice on the desktop: SDK release to Crowd of over 4500 @developer's Conference", Microprocessor Report, V6, N10, P1(5), Jul. 29, 1992.
K.M. Chang et al. "A Network Interface for Real-Time Video Services on a High-Speed Multimedia LAN", IEEE, ICCS/ISITA, 1992, pp. 16-19.

Affiliated with

Also associated with

Rating

Dual-mode graphics controller with preemptive video access does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Dual-mode graphics controller with preemptive video access, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dual-mode graphics controller with preemptive video access will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-993958