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. 23, 2007
Filed:
Jan. 07, 2003
Seiichi Noda, Tokyo, JP;
Seiichi Noda, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
A communication system for transmitting a six-phase modulated signal and including an efficient error correction system suitable for the six-phase modulated signal is disclosed. A transmitting apparatus comprises a ternary error correction encoding circuit for generating a ternary transmit sequence, a parity generation circuit for generating a parity, a parity insertion circuit for inserting the parity into a binary transmit sequence, and a six-phase modulator for performs six-phase modulation. A receiving apparatus comprises a parity generation circuit for generating a parity, a parity separation circuit for separating a received parity, a parity comparison circuit for calculating a difference between the parity and the received parity, a syndrome calculation circuit for calculating a syndrome, a ternary error correction decoding circuit for producing a ternary decoded sequence, a high-order digit correction circuit for producing a binary decoding sequence, and a 6-ary to binary conversion circuit for producing a binary received signal is obtained from the ternary decoded sequence and binary decoding sequence.