John Y Retika

RE41523, Aug 17, 2010

May 25, 2006

11/441465

John Y. Retika - Fremont CA, US

G09G 5/36

345558, 345559, 712 E9024, 712 E9042, 712 E9067

A host writes graphics commands and data to programmable registers through a command FIFO that is read by a graphics controller or BitBlt engine. Rather than write an address and a data value for each register programmed, the host writes one address, one index, and several data values. The address points to an index register. The index is a mapping index word with several multi-bit mapping fields. Each multi-bit mapping field in the index identifies a register to be programmed with one of the data values. Since N bits are used for each mapping field, the mapping field can select one register in a bank of 2−1 registers. The registers in the bank can be programmed in any order, and registers can be skipped. Since only one index is stored in the command FIFO for programming several registers, less memory space and fewer bus cycles are required.

6741257, May 25, 2004

Jan 20, 2003

10/248431

John Y. Retika - San Jose CA

NeoMagic Corp. - Santa Clara CA

G09G 536

345558, 345559

A host writes graphics commands and data to programmable registers through a command FIFO that is read by a graphics controller or BitBlt engine. Rather than write an address and a data value for each register programmed, the host writes one address, one index, and several data values. The address points to an index register. The index is a mapping index word with several multi-bit mapping fields. Each multi-bit mapping field in the index identifies a register to be programmed with one of the data values. Since N bits are used for each mapping field, the mapping field can select one register in a bank of 2 -1 registers. The registers in the bank can be programmed in any order, and registers can be skipped. Since only one index is stored in the command FIFO for programming several registers, less memory space and fewer bus cycles are required.