Image analysis – Image compression or coding
Patent
1996-09-27
1999-11-23
Couso, Jose L.
Image analysis
Image compression or coding
382236, 382238, G06K 936
Patent
active
059914432
ABSTRACT:
In an image source for multimedia applications such as networked computer games, a graphics engine (16) generates pixel images one line at a time using a scan-line algorithm and supplies the generated scan lines to an encoder (18) where they are buffered. The encoder codes the buffered pixel data as macroblocks of, for example 16.times.16 pixels according to MPEG or similar standards. When the graphics engine has sent sufficient scan lines for a first macroblock to the encoder, it sends a signal (FLAG) on receipt of which the encoder begins coding the pixel data as a macroblock in a line of macroblocks whilst continuing to receive scan lines from the graphics engine (16). To increase encoder efficiency, the graphics engine specifies to the encoder global (GMV) and macroblock (BMV) motion vectors for substantially all or selected ones of the macroblocks of an image respectively. Completed coded macroblock lines may be sent to a remote user over a data network, with user commands for modifing the composition of subsequent image frames being received on a back-channel (26) of the network.
REFERENCES:
patent: 5241401 (1993-08-01), Fujiwara et al.
patent: 5265180 (1993-11-01), Golin
patent: 5333012 (1994-07-01), Singhal et al.
patent: 5535288 (1996-07-01), Chen et al.
patent: 5570133 (1996-10-01), Yagasaki
patent: 5627581 (1997-05-01), Kondo
patent: 5644660 (1997-07-01), Bruder
patent: 5703966 (1997-12-01), Astle
Computer Graphics: Principles and Practice pp. 680-686, James D. Foley et al, Addison-Wesley Publishing Co. Ltd. 1990.
Eilley Edward S.
Gallery Richard D.
Morris Octavius J.
Penna David E.
Couso Jose L.
Do Anh Hong
Gathman Laurie E.
U.S.Philips Corporation
LandOfFree
Graphics image manipulation does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Graphics image manipulation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Graphics image manipulation will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1231403