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:
Sep. 22, 1992
Filed:
Jun. 13, 1989
Applicant:
Inventors:
Tony M Costa, Kearny, NJ (US);
Robert Resuta, S. Bound Brook, NJ (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ; H03M / ;
U.S. Cl.
CPC ...
371 43 ;
Abstract
A convolutional decoder for decoding a received message of digital data convolutionally encoded at a constraint length of K, comprises branch metric calculating circuitry for receiving the data and providing output signals indicative of the branch metrics therefor, a plurality of 2.sup.K-1 circuits for receiving the output signals and computing state metrics, the circuits being interconnected to form a trellis and generating decision bits and a plurality of 2.sup.K-1 memory circuits, the memory circuits being interconnected also to form a trellis and responsive to the decision bits to output a decoded digit of the received message data.