Electrical computers and digital processing systems: processing – Processing architecture – Microprocessor or multichip or multimodule processor having...
Reexamination Certificate
2006-07-11
2006-07-11
Treat, William M. (Department: 2181)
Electrical computers and digital processing systems: processing
Processing architecture
Microprocessor or multichip or multimodule processor having...
C712S229000, C712S244000, C718S108000
Reexamination Certificate
active
07076637
ABSTRACT:
System for providing transitions between operating modes of a device. The system includes a method for providing transitions between a privileged and a non-privileged operating mode. The method comprises executing an application in the non-privileged mode, generating an interrupt to request the services of a privileged function, and transitioning to the privileged mode to execute the privileged function, wherein the privileged function is executed as part of the same thread of execution as the application.
REFERENCES:
patent: 5515538 (1996-05-01), Kleiman
patent: 6175916 (2001-01-01), Ginsberg et al.
Liedtke et al., “Lazy Process Switching”, Proceedings of the Eigth Workshop on Hot Topics in Operating Systems, IEEE, May 20-22, 2001, pp. 15-18.
Bershad et al. “Extensibility Safety and Performance in the SPIN Operating System”, Proceedings of the Fifteenth Symposium on Operating Systems Principles, ACM, 1995, pp. 267-283.
Chandrasekhar Ramesh
Kelley Brian Harold
O'Connell Robert J.
Qualcomm Inc.
Treat William M.
Wadsworth Philip R
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