Computer graphics processing and selective visual display system – Computer graphic processing system
Patent
1995-08-04
1998-11-24
Bayerl, Raymond J.
Computer graphics processing and selective visual display system
Computer graphic processing system
348233, 345419, G06F 1500
Patent
active
058420045
ABSTRACT:
Three-dimensional compressed geometry is decompressed with a unit having an input FIFO receiving compressed data bits and outputting to an input block state machine and an input block, whose outputs are coupled to a barrel shifter unit. Input block output also is input to Huffman tables that output to the state machine. The state machine output also is coupled to a data path controller whose output is coupled to a tag decoder, and to a normal processor receiving output from the barrel shifter unit. The decompressor unit also includes a position/color processor that receives output from the barrel shifter unit. Outputs from the normal processor and position/color processor are multiplexed to a format converter. For instructions in the data stream that generate output to the format converter, the decompression unit generates a tag sent to the tag decoder in parallel with bits for normals that are sent to the format converter. The decompressed stream of triangle data may then be passed to a traditional rendering pipeline, where it can be processed in full floating point accuracy, and thereafter displayed or otherwise used.
REFERENCES:
patent: 5408605 (1995-04-01), Deering
patent: 5517611 (1996-05-01), Deering
patent: 5537551 (1996-07-01), Denenberg et al.
J. W. Durkin and J. F. Hughes, Nonpolygonal Isosurface Rendering for Large Volume Datasets, 1070-2385/94 1995 IEEE.
Deering Michael F.
Wynn Aaron S.
Bayerl Raymond J.
Kivlin B. Noel
Nguyen Cao H.
Sun Microsystems Inc.
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