System and method for securely storing data in a memory

Details System and method for securely storing data in a memory System and method for securely storing data in a memory

2007-05-01

2007-05-01

Baker, Stephen M. (Department: 2133)

Error detection/correction and fault detection/recovery

Pulse or data error handling

Digital data error correction

C714S765000

Reexamination Certificate

active

10950738

ABSTRACT:
A system for securely storing data in a memory includes a memory (1) and a CPU (Central Processing Unit) (2). The memory is divided into a plurality of fixed-size blocks (10) for storing data. Each block includes a plurality of data pages (101), and a parity check page (102) storing check codes for checking and recovering byte data. Each data page includes a plurality of byte addresses for storing byte data including a CRC (Cyclic Redundancy Check), and a complement of the CRC in the hexadecimal system expressed as CRC′. The CPU is for calculating a CRC for each data page according to byte data of the data page, calculating a CRC′ based on the CRC of the data page, and for identifying and correcting any incorrect bit data. A related method is also disclosed.

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