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:
Sep. 06, 2005
Filed:
Dec. 11, 2001
Michael J. Homberg, Westborough, MA (US);
Joris Wils, Acton, MA (US);
Jack J. Stiffler, Marion, MA (US);
Raju C. Bopardikar, Carlisle, MA (US);
Michael J. Homberg, Westborough, MA (US);
Joris Wils, Acton, MA (US);
Jack J. Stiffler, Marion, MA (US);
Raju C. Bopardikar, Carlisle, MA (US);
EMC Corporation, Hopkinton, MA (US);
Abstract
Each time data, in the form of data blocks protected by code checks, must be reformatted, the original data is broken into new data blocks and a new code check is calculated from, and combined with, each new data block, but the new data blocks and new code checks are both reconstituted versions of the original data blocks and the original code checks. Consequently, the data is never left without protection. In one embodiment, an ingress encoder recomputes an ingress code check from an original data block and its associated header. An egress encoder computes an egress code check from the egress header for an outgoing data block reformatted from the original data block and the ingress code check. The outgoing information is then assembled from the egress header, the outgoing data block and the newly computed egress code check.