Apparatus for improving data access reliability of flash memory

Details Apparatus for improving data access reliability of flash memory Apparatus for improving data access reliability of flash memory

2011-03-29

2011-03-29

Abraham, Esaw T (Department: 2112)

Error detection/correction and fault detection/recovery

Pulse or data error handling

Digital data error correction

C714S781000, C365S185090

Reexamination Certificate

active

07917832

ABSTRACT:
An apparatus for improving the data access reliability of flash memory is provided, including an instruction register, an address register, a flash memory control circuit, a data register, an encoder, an error correction code (ECC) generator, a signal converter, a comparator, an arbitrator, and a decoder. The instruction register and the address register are connected to a flash memory respectively for storing the access instructions and the addresses. The flash memory control circuit is connected to both instruction register and address register for controlling the access to the flash memory. The data register is connected to flash memory control circuit for loading data to be written to the flash memory. The encoder encodes the written data, and the ECC generator generates an ECC, which is written to the flash memory through the signal converter. The comparator and the arbitrator provide the comparison with ECC and informing decoder f suspicious bit values when data is read from the flash memory. The decoder is for correctly decoding data and avoiding the suspicious bit values to be read. Thus, the object improving the data access reliability of flash memory is achieved.

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