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:
Apr. 16, 1996
Filed:
May. 26, 1993
Toshiya Todoroki, Tokyo, JP;
NEC Corporation, , JP;
Abstract
A Viterbi decoder includes a branch metric generator, a subset maximum likelihood estimator, an accumulator switch circuit (ACS circuit), a most likely path setter, a first selector, and a path-memory circuit for the purpose of estimating encoding bits of a 4-bit error-correcting encoded information symbol string. The Viterbi decoder also includes a noncoding bit detector, eight j-level shift registers, and a second selector for the purpose of estimating a noncoding bit of the 4-bit error-correcting encoded information symbol string. The j-level shift registers are provided for temporarily holding the output signals of the noncoding bit detector. The second selector is provided for selecting one output signal from the output signals of the j-level shift registers in accordance with the output signal of the selector.