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:
Jan. 30, 2001
Filed:
Oct. 29, 1998
Yoshio Urabe, Shijonawate, JP;
Hitoshi Takai, Toyono, JP;
Hidetoshi Yamasaki, Amagasaki, JP;
Kenichi Mori, Ibaraki, JP;
Matsushita Electric Industrial Co., Ltd., Osaka-fu, JP;
Abstract
A demodulator,obtains demodulated data in a plurality of channels. Estimating portions,and,estimate and output the numbers of erroneous symbols and error locations thereof in the demodulated data. A data comparator,compares the demodulated data corresponding to the error locations with the demodulated data in the corresponding locations in other channels to determine whether the error location is correct, and it outputs a decision signal in response to the determination. A data selector,selects one of the demodulated data in the plurality of channels on the basis of the numbers of erroneous symbols and the decision signals and outputs the data as selected data. It is then possible to maintain the reliability of error detection even when a less redundant short error detecting code is used, and also to accurately select a channel of good quality even when the demodulated data in all channels contain the same extent of errors.