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:
Aug. 07, 2001
Filed:
Nov. 30, 1999
Applicant:
Inventors:
Stephen Alan Turk, Longmont, CO (US);
Christopher Paul Zook, Longmont, CO (US);
Assignee:
Cirrus Logic, Inc., Austin, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M 7/00 ;
U.S. Cl.
CPC ...
H03M 7/00 ;
Abstract
An encoder/decoder (ENDEC) avoids undesired sequences in encoded data blocks, such as quasi-catastrophic sequences, by essentially skipping over inputs that create the undesired sequences. Upon recognizing that a particular incoming data block has a value corresponding to an undesired sequence, the ENDEC does not use the problematic value for the incoming data block, but rather adds an offset to the value for the incoming data block, and uses the offset value for producing an encoded output sequence for the data block.