Electrical computers and digital data processing systems: input/ – Input/output data processing – Direct memory accessing
Reexamination Certificate
2008-04-22
2008-04-22
Tsai, Henry (Department: 2184)
Electrical computers and digital data processing systems: input/
Input/output data processing
Direct memory accessing
C710S022000
Reexamination Certificate
active
10926589
ABSTRACT:
A system and method for a DMA controller with multi-dimensional line-walking functionality is presented. A processor includes an intelligent DMA controller, which loads a line description that corresponds to a shape or line. The intelligent DMA controller moves through a memory map and retrieves data based upon the line description that includes a major step and a minor step. In turn, the intelligent DMA controller retrieves data from the shared memory without assistance from its corresponding processor. In one embodiment, the intelligent DMA controller may analyze a line using the rate of change along its minor axes in conjunction with locations where the line intersects subspaces and store array spans of contiguous memory along the line's major axis.
REFERENCES:
patent: 4667190 (1987-05-01), Fant
patent: 4754267 (1988-06-01), Reynolds et al.
patent: 6195737 (2001-02-01), Hollister et al.
patent: 6526491 (2003-02-01), Suzuoki et al.
patent: 6529196 (2003-03-01), Holt
patent: 6559854 (2003-05-01), Oka et al.
patent: 6677950 (2004-01-01), Ohba et al.
patent: 2001/0002130 (2001-05-01), Suzuoki
patent: 2002/0046229 (2002-04-01), Yutaka et al.
patent: 2002/0060690 (2002-05-01), Tanaka et al.
patent: 2002/0095523 (2002-07-01), Shimakawa et al.
patent: 2002/0135582 (2002-09-01), Suzuoki et al.
patent: 2002/0138637 (2002-09-01), Suzuoki et al.
patent: 2002/0138701 (2002-09-01), Suzuoki et al.
patent: 2002/0138707 (2002-09-01), Suzuoki et al.
patent: 2002/0156993 (2002-10-01), Suzuoki et al.
patent: 2003/0055984 (2003-03-01), Shimakawa et al.
patent: 2003/0076331 (2003-04-01), Deering
Foley et al., Computer Graphics: Principles and Practice, 1993, Second Edition, pp. 26 and 27.
Brokenshire Daniel Alan
Fossum Gordon Clyde
Minor Barry L
International Business Machines - Corporation
Nam Hyun
Rifai D'Ann N.
Tsai Henry
VanLeeuwen & VanLeeuwen
LandOfFree
System and method for DMA controller with multi-dimensional... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System and method for DMA controller with multi-dimensional..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method for DMA controller with multi-dimensional... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3933816