Computer graphics processing and selective visual display system – Computer graphics processing – Shape generating
Patent
1997-07-22
1999-11-30
Zimmerman, Mark K.
Computer graphics processing and selective visual display system
Computer graphics processing
Shape generating
345202, 382232, 382245, G06F 1500
Patent
active
059951168
ABSTRACT:
A high definition graphic display apparatus comprises a polygon data inputting means for producing polygon data including coordinates to be displayed; an N times coordinate conversion means for expanding each coordinate value N times; an active list producing means for producing an active list which includes active cells each including information of an X coordinate which has N-times expanded coordinates which represent inclination of a side, and a number of Y coordinate lines which intersect the side, a scan list producing unit for producing a scan list by finding a line scan list of every scan line with a point on a side corresponding to the active cell which is present on the scan line; a scan line information extracting means for deciding whether an unit N lines is directly convertible into compressed display data, the unit N lines which includes a Y coordinate line; a compressed data producing means for producing compressed display data in accordance with an output of the scan line information extracting means; a compressed data expansion means for expanding the compressed display data to produce raster data; and a display device for displaying the expanded raster data.
REFERENCES:
patent: 5278949 (1994-01-01), Thayer
patent: 5455900 (1995-10-01), Shiraishi et al.
Harrison Chante E.
Matsushita Electric - Industrial Co., Ltd.
Zimmerman Mark K.
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