Graphics processor and system with microcontroller for...

Details Graphics processor and system with microcontroller for... Graphics processor and system with microcontroller for...

2005-11-08

2005-11-08

Tung, Kee M. (Department: 2676)

Computer graphics processing and selective visual display system

Computer graphic processing system

C345S520000, C713S330000

Reexamination Certificate

active

06963340

ABSTRACT:
A graphics processor or display device including a microcontroller that functions as a sequencer, a computer system including at least one such graphics processor or display device, and a microcontroller for use in such a graphics processor or display device. In preferred embodiments, the microcontroller functions as a sequencer for controlling the timing of power up and/or power down operations by one or both of a graphics processor and a display device. The microcontroller is implemented to exclude any capacity to handle interrupts and so can provide guaranteed timing, and is preferably implemented to be small, simple, and programmable, and to store a small number of programs. Each program consists of instructions belonging to a small instruction set, such as a set consisting of set and clear instructions (for overriding or overwriting specified register bits) and wait, release, and stop instructions. When executing a program, the microcontroller typically overrides (in an ordered sequence) state and control bits that would otherwise be asserted.

REFERENCES:
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patent: 5278404 (1994-01-01), Yeates
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patent: 5907713 (1999-05-01), Chen et al.
patent: 5991883 (1999-11-01), Atkinson
patent: 6138209 (2000-10-01), Krolak et al.
patent: 6243817 (2001-06-01), Melo et al.

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