Electrical computers and digital processing systems: processing – Processing control – Context preserving (e.g. – context swapping – checkpointing,...
Reexamination Certificate
2005-11-03
2008-12-02
Ellis, Richard (Department: 2183)
Electrical computers and digital processing systems: processing
Processing control
Context preserving (e.g., context swapping, checkpointing,...
C714S030000
Reexamination Certificate
active
07461242
ABSTRACT:
A method and apparatus provides context switching of logic in an integrated circuit using one or more test scan circuits that use test data during a test mode of operation of the integrated circuit to store and/or restore non-test data during normal operation of the integrated circuit. The integrated circuit includes context control logic operative to control the test scan circuit to at least one of: store and restore context state information contained in functional storage elements in response to detection of a request for a change in context during normal operation of the integrated circuit.
REFERENCES:
patent: 4535455 (1985-08-01), Peterson
patent: 4988998 (1991-01-01), O'Brien
patent: 2002/0087928 (2002-07-01), Six
Medvedev, Alexander; Longhorn Microsoft improves graphics by 55%; from www.digit-life.com; Jun. 7, 2005; pp. 1-9.
Buchner Gregory C.
Grossman Mark S.
ATI Technologies ULC
Ellis Richard
Vedder Price P.C.
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