Electrical computers and digital processing systems: processing – Processing control – Context preserving (e.g. – context swapping – checkpointing,...
Reexamination Certificate
2011-07-12
2011-07-12
Ellis, Richard (Department: 2183)
Electrical computers and digital processing systems: processing
Processing control
Context preserving (e.g., context swapping, checkpointing,...
Reexamination Certificate
active
07979684
ABSTRACT:
A method of changing execution contexts is provided that includes receiving a context selection input. In a first clock phase, the method includes shifting data from a first latch element of a normal execution context to a second latch element of the normal execution context and shifting shadow data from a third latch element of a shadow execution context to a fourth latch element of the shadow execution context. In a second clock phase, the method includes shifting the shadow data of the fourth latch element of the shadow execution context into the first latch element of the normal execution context and shifting the data of the second latch element of the normal execution context into the third latch element of the shadow execution context. In a particular embodiment, the method may include receiving a test mode selection and shifting test data, such as scan test or automatic test pattern generated data, to a test output.
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Hsu De Dzwo
Kuo Eai-Hsin Alfred
Lin Jentsung
Ellis Richard
Kamarchik Peter
Pauley Nicholas J.
Qualcomm Incorporated
Talpalatsky Sam
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