Enhancements to data integrity verification mechanism

Details Enhancements to data integrity verification mechanism Enhancements to data integrity verification mechanism

2007-07-17

2007-07-17

Tu, Christine T. (Department: 2117)

Error detection/correction and fault detection/recovery

Pulse or data error handling

Memory testing

C711S100000, C711S202000

Reexamination Certificate

active

11386495

ABSTRACT:
A method and apparatus is provided for maintaining data integrity. According to the method, a physical checksum calculation is performed on a block of data. After performing the physical checksum calculation, a logical check is performed on the data contained with the block of data. If the block of data passes the logical check, then the block of data may be written to nonvolatile memory. Thereafter, when the block of data is read from nonvolatile memory a physical checksum verification procedure is performed on the block of data to determine whether the block of data was corrupted after performing the logical check on the data contained with the block of data.

REFERENCES:
patent: 5233618 (1993-08-01), Glider et al.
patent: 5893930 (1999-04-01), Song
patent: 6094708 (2000-07-01), Hilla et al.
patent: 2006/0200497 (2006-09-01), Hu et al.

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