Russell A Cook

US Patent:

6621495, Sep 16, 2003

Filed:

Jun 8, 2000

Appl. No.:

09/589796

Inventors:

Russell S. Cook - Round Rock TX
Joe Christopher St. Clair - Round Rock TX

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06T 120

US Classification:

345506, 345620, 345418

Abstract:

A method and apparatus in a geometry engine having a plurality of stages for processing graphics data. An immediate mode data stream is received at a first stage within the plurality of stages. Data from the immediate mode data stream is stored in a storage to build a vertex data structure for processing within the plurality of stages. The vertex data structure is transmitted to the first stage for processing in response to receiving a signal to transmit the vertex data structure. Data for the vertex data structure remains in the storage as default data for a subsequent vertex data structure.

US Patent:

6664967, Dec 16, 2003

Filed:

May 18, 2000

Appl. No.:

09/574174

Inventors:

Russell S. Cook - Round Rock TX

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06T 120

US Classification:

345506, 345522, 708203, 708212

Abstract:

A method and apparatus for detecting bits set in a data structure. A first level encoding stage receives bits for the data structure, groups the bits into a set of bit groups, and encodes the set of bit groups to form a set of output bits. A set of intermediate level encoding stages is connected to the first level encoding stage. Each level intermediate encoding stage receives output bits from a previous stage, groups the output bits into a plurality of bit groups, and encodes the plurality of bit groups to generate a plurality of output bits. A final level encoding stage is connected to a last intermediate level encoding stage within the set of intermediate level encoding stages, wherein the final level encoding receives final output bits from a last intermediate level encoding stage within the plurality of intermediate level encoding stages and encodes the final output bits to generate an indication of bits set in the data structure.