Cellular telephone memory with backup memory interface

Details Cellular telephone memory with backup memory interface Cellular telephone memory with backup memory interface

2006-07-18

2006-07-18

Kim, Hong Chong (Department: 2186)

Electrical computers and digital processing systems: memory

Storage accessing and control

Control technique

C711S104000

Reexamination Certificate

active

07080222

ABSTRACT:
A static random-access memory (SRAM) provides volatile storage of data in a cellular telephone. Connected to the volatile SRAM is a second SRAM that provides nonvolatile storage of data by backup battery means. Writing and reading of either volatile or nonvolatile data can occur. Additionally, provision is made to automatically back up data written to the volatile SRAM in the nonvolatile SRAM, as well as to streamline restoration of backed-up data from the nonvolatile SRAM to the volatile SRAM.

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patent: 6563746 (2003-05-01), Fujioka et al.
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