The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 13, 2007
Filed:
Jun. 02, 2003
Michael James, Longmont, CO (US);
Kana Ono, Longmont, CO (US);
Michael James, Longmont, CO (US);
Kana Ono, Longmont, CO (US);
Fujitsu Limited, Kawasaki, JP;
Abstract
When data is read from a disk and stored in volatile memory, check bits are generated and stored in the memory using an algorithm such as cyclical redundancy check (CRC). The CRC algorithm operates on the basis of the bit length in which the data is organized, such as 8 bits. If the data has errors, an error correction code (ECC) algorithm is used to correct the data errors, but the ECC algorithm operates on the basis of symbols having a different bit length, such as 10 bits. To avoid having to re-read the data from the volatile memory to adjust the CRC value, the CRC algorithm is executed on selected mask data developed by the ECC algorithm, the CRC algorithm being executed on the basis of the second bit length to generate a CRC mask. The CRC mask corrects the stored CRC value.