Electrical computers and digital processing systems: memory – Storage accessing and control – Control technique
Reexamination Certificate
2007-10-02
2007-10-02
Kim, Matthew (Department: 2186)
Electrical computers and digital processing systems: memory
Storage accessing and control
Control technique
C711S103000, C711S105000
Reexamination Certificate
active
11290855
ABSTRACT:
A software routine that writes downloaded updated operating system software over existing application code to flash memory of a cable modem in an inverted arrangement. If the download process is interrupted before the update can be verified, a pointer still points to the existing code to facilitate update-interruption recovery. After verifying a successful update, a new pointer is generated that points to the updated operating system. Then, updated application code can be downloaded and stored in the flash memory over the old operating system code.Thus, each time an update is performed, the location of the operating system within the flash memory with respect to the location of the application code is inverted. This allows the size of flash memory to be reduced, as only one copy of the operating system and application code must be stored, while retaining capability to recovery from an incomplete download.
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Andrews Jeff
Easterling Robert
Enderby Russell
Walston Allen
Winters Derek
Arris International, Inc.
Doughty John L.
Kim Matthew
Patel Hetul
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