Patent
1991-10-08
1994-06-28
Evans, Arthur G.
395166, 395400, G06F 1562
Patent
active
053254864
ABSTRACT:
A bit map display system has a frame buffer memory for storing image data in pixel blocks each composed of a plurality of dots or pixels. To transfer image data from a source address region to a destination address region, block addresses are generated from relative addresses of starting and ending pixel points in the source address region and relative addresses of starting and ending pixel points in the destination address region, and supplied to the frame buffer memory. A decision circuit generates a pre-reading signal and a non-reading signal from the relative addresses depending on the direction in which the image data are to be transferred. The pre-reading and non-reading signals are set according to certain predetermined conditions. The image data are transferred from the source address region to the destination address region in the frame buffer memory in various ways depending on whether the pre-reading and non-reading signals are set or not.
REFERENCES:
patent: 4841435 (1989-01-01), Papenberg
patent: 4845656 (1989-07-01), Nishibe et al.
patent: 4882683 (1989-11-01), Rupp et al.
patent: 4916301 (1990-04-01), Mansfield et al.
patent: 5007102 (1991-04-01), Haskell
patent: 5034900 (1991-07-01), Kimura et al.
patent: 5095446 (1992-03-01), Jingu
patent: 5175816 (1992-12-01), Kimura et al.
Kawai Toshihiko
Omori Mutsuhiro
Tanaka Koichi
Evans Arthur G.
Sony Corporation
Tung Kee M.
LandOfFree
Apparatus for transferring blocks of image data does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for transferring blocks of image data, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for transferring blocks of image data will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2383241