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:
Apr. 01, 2003
Filed:
Sep. 29, 1999
Miklos Sandorfi, Foxboro, MA (US);
EMC Corporation, Hopkinton, MA (US);
Abstract
A method and apparatus for checking errors in data. The method includes transmitting data along with parity bits to a first end of a data transmission network; generating check bits from the data as such data passes through the network; comparing the check bits with the parity bits to determine whether there has been an error generated by the network. The error detector apparatus includes: a data source for providing data. The data has a plurality of bytes, each byte having a parity bit. A first logic is provided for determining whether the parity bits have the same parity and for producing a combined parity bit representative of such determination. A check bit generator produces a plurality of check bits from the data. A second logic determines whether the produced check bits have the same logic state and produces a combined check bit representative of such determination. A third logic determines whether the combined check bit and the combined parity bit have the same logic state. The check bit generator produces the check bits in accordance with a redundancy check bit generating code, for example a modified Hamming code.