Method and apparatus for calculating checksums

Details Method and apparatus for calculating checksums Method and apparatus for calculating checksums

2005-02-16

2009-12-08

Baderman, Scott T (Department: 2112)

Error detection/correction and fault detection/recovery

Pulse or data error handling

Error/fault detection technique

C714S758000

Reexamination Certificate

active

07631251

ABSTRACT:
A method for calculating checksums includes calculating a first checksum based at least in part on a first block of data, and calculating a partial checksum based at least in part on a second block of data. The second block of data comprises a data portion followed by a fill portion, the fill portion having a length equal to a length of the first block of data. The first checksum and partial checksum are combined to form a second checksum for a total block of data, the total block of data comprising the first block of data and the data portion of the second block of data.

REFERENCES:
patent: 4712214 (1987-12-01), Meltzer et al.
patent: 5500864 (1996-03-01), Gonia et al.
patent: 5724370 (1998-03-01), Sferrazza et al.
patent: 6938198 (2005-08-01), Purcell
patent: 6964008 (2005-11-01), Van Meter, III
patent: 7185266 (2007-02-01), Blightman et al.

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