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:
Dec. 16, 2003
Filed:
Apr. 01, 2002
David R. Irvin, Raleigh, NC (US);
Ali S. Khayrallah, Apex, NC (US);
Other;
Abstract
A flexible method of error coding uses at least two generating polynomials to provide different degrees of error protection and to optionally superimpose a phantom channel on a primary channel, without the need for explicit signaling from transmitter to receiver. An encoded message is CRC decoded the on the receive side with at least two different generating polynomials. Based on the results of the twin decoding, the present method can determine which of the generating polynomials was used to encode the message and respond accordingly. For instance, if the a particular generating polynomial was used, then this may be use to indicate that a second channel has been superimposed onto the primary channel and that second channel may be extracted. On the other hand, if another generating polynomial, such as the default generating polynomial, was used, this may be used to indicate that no second channel has been superimposed.