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. 17, 2002
Filed:
Mar. 16, 1999
Izumi Hatakeyama, Tokyo, JP;
Masahiko Naito, Tokyo, JP;
Sony Corporation, Tokyo, JP;
Abstract
A Viterbi decoding apparatus sets the initial path metric value of each state to a value weighted based on the initial value of a convolutional encoder, and decodes a data string one bit by one bit whenever performing tracing-back for one step with a fixed state determined based on a value of a tail bit as a start-point state when a path metric operation has reached the final operation. Moreover, the Viterbi decoding apparatus selects a maximum-likelihood state out of prospective states determined based on the value of the tail bit and performs tracing-back, until the path metric operation reaches the final operation after it has exceeded the number of data strings. Thus, it is possible to improve the decoding accuracy and the decoding speed.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile