System and method for updating contents of a flash ROM

Details System and method for updating contents of a flash ROM System and method for updating contents of a flash ROM

2006-03-21

2006-03-21

Peikari, B. James (Department: 2185)

Electrical computers and digital processing systems: memory

Storage accessing and control

Specific memory composition

C711S102000, C711S103000, C711S100000, C711S104000, C711S170000, C711S171000, C711S173000, C711S172000, C713S001000, C713S002000, C713S100000, C713S155000, C713S160000, C713S161000, C713S164000, C713S165000, C713S166000, C713S167000, C365S230010, C365S230020, C365S230030, C365S230040

Reexamination Certificate

active

07017004

ABSTRACT:
Upgrading a non-volatile memory image such as a flash ROM is accomplished by partitioning the flash ROM into a plurality of flash ROM regions. One of the flash ROM regions is selected to receive the software upgrade, which can then be directly overwritten without having to overwrite the flash ROM image in its entirety. Through the use of an image buffer, which stores information about the ROM regions, it is possible to move ROM regions, delete ROM regions, add ROM regions, expand/contact ROM regions, update ROM regions, and enable/disable ROM regions without having to modify the entire ROM image or shadow parts of the ROM image in RAM. Additionally, security and registry information can also be logically linked to a particular region.

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