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. 31, 1999
Filed:
Jan. 21, 1997
Applicant:
Inventors:
Toshihiko Hirose, Kanagawa, JP;
Hiroyuki Ino, Chiba, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
371 437 ; 371 44 ; 371 45 ; 371 46 ; 262341 ; 369 59 ; 375265 ;
Abstract
A Viterbi decoding method and decoder are provided for achieving a faster operation than the prior art. The Viterbi decoding method and decoder are arranged to determine the most approximate path on two-state state metrics and decode the data on the most approximate path. The Viterbi decoder includes registers 2 and 3 for reading two pieces of sample data, an adder 14 for adding two pieces of sample data read by the registers 2 and 3, and an arrangement located after the adder 14 for determining a path of each state transition by comparing the added result with a given identification of -1, 0 or 1.