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:
Oct. 02, 2001
Filed:
Dec. 02, 1998
Mui-Chwee Tong, Singapore, SG;
Nicholas Weiner, Bristol, GB;
Motorola Inc., Schaumburg, IL (US);
Abstract
In a Viterbi decoder, a branch metrics unit (,) receives samples and provides a branch metric to a first and second adder (,and,) that adds the branch metric to a first and second path metric from a path metrics memory (,). Concurrently, a comparator (,) compares the first and second path metrics and provides a select signal to a multiplexor (,) to select the output of the first or second adder (,or,). The selection signal is also provided to a path memory unit (,) which provides a detected symbol sequence. The output of the first or second adder (,or,) is selected by the multiplexor (,) and provided to the path metric memory (,) as an updated path metric.