United States Patent m
Kawase et al.
US005767858A [ii] Patent Number:  Date of Patent:
 COMPUTER GRAPHICS SYSTEM WITH TEXTURE MAPPING
 Inventors: Kei Kawase. Sagamihara; Nobuyoshi Tanaka. Yamato. both of Japan
 Assignee: International Business Machines Corporation, Armonk, N.Y.
 Appl. No.: 566,244
 Filed: Dec 1, 1995
 Foreign Application Priority Data
Dec. 1, 1994 [JP] Japan 6-298618
 Int CI.6 G09B 9/08
 U.S. CI 345/430
 Field of Search 395/125. 126.
395/128. 129. 130. 131. 132
 References Cited
U.S. PATENT DOCUMENTS
5,490,240 2/1996 Foran et al 395/130
5,537,224 7/1996 Suzuoki et al 395/130 X
5,553,208 9/1996 Murataetal 395/130 X
Primary Examiner—Phu K. Nguyen
Assistant Examiner—Cliff N. Vo
Attorney, Agent, or Firm—Martin J. McKinley
Provided are a plurality of texture memory clusters for storing interleaved texture image data composed of a plurality of texels in each memory so as to avoid duplication, each having a collecting circuit for computing, from the coordinates of a texture image for one pixel, texels for calculating a texture value corresponding to the coordinates, and for collecting the texel values from the plurality of texture memory clusters, and circuitry for calculating the texture value for the above one pixel from the collected texel values, a bus for interconnecting the plurality of memory clusters, and a plurality of texture generators each connected to one of the plurality of memory clusters for calculating the coordinates of the texture image for the above one pixel. Texel values can efficiently exchanged between each memory cluster without redundantly holding texels in memories.
9 Claims, 8 Drawing Sheets