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. 22, 2011
Filed:
Feb. 16, 2007
Applicants:
Elizabeth R. Cowie, Edinburgh, GB;
David I. Lawrie, Midlothian, GB;
Inventors:
Elizabeth R. Cowie, Edinburgh, GB;
David I. Lawrie, Midlothian, GB;
Assignee:
Xilinx, Inc., San Jose, CA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H03M 13/41 (2006.01);
U.S. Cl.
CPC ...
Abstract
An Add-Compare-Select circuit for use with a trellis decoder can include a first module and a second module. The first module can provide a difference signal specifying an indication of a difference between a second path cost and a first path cost of a trellis. The second path cost can be a sum of a second state cost and a second branch metric and the first path cost can be a sum of a first state cost and a first branch metric. The second module can select the first path cost or the second path cost as a new cost according to the difference signal of the first module.