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:
Feb. 27, 2001
Filed:
Dec. 10, 1997
Subrahmanyam Dravida, Freehold, NJ (US);
Srinivasan S. Ravikumar, Morristown, NJ (US);
Lucent Technologies Inc., Murray Hill, NJ (US);
Abstract
The specification relates to a method and an apparatus for generating cyclical redundancy code (CRC) by analyzing segmented groups of bits from a message concurrently, producing a temporary remainder value as a result of a multiple bit lookup from a generating CRC lookup table, using the temporary remainder or a portion thereof along with the next sequential segmented group of message bits as exclusive-or inputs, taking the result of the exclusive-or output and applying the result as a lookup value from the generating CRC lookup table. The process is repeated until the message groups have been depleted, at which time the message is completely coded and the temporary remainder existing at the time represents the CRC checkbits for the message. The recursive method developed in association with the present invention is called a Recursive Syndrome Expansion (RSE).