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. 03, 2012
Filed:
Jan. 16, 2008
Hidehiro Toyoda, Tachikawa, JP;
Kenro Sekine, Fuchu, JP;
Shinya Sasaki, Koganei, JP;
Shinji Nishimura, Tokyo, JP;
Hidehiro Toyoda, Tachikawa, JP;
Kenro Sekine, Fuchu, JP;
Shinya Sasaki, Koganei, JP;
Shinji Nishimura, Tokyo, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A data transmission system comprising a transmitter and a receiver. The transmitter comprises a phase encoder for partitioning consecutive bit data to be input in data in units of X bits; and converting a 2value indicated by the data of X bits in unique association with an (N/2−1)value of a Y symbol, and for confining use of signal points, from among the signal points of N-ary phase, only to a signal point P(at a phase angle 0) and N/2−2 signal points P(+2) (where 1≦n<N/2−2). The receiver comprises a phase decoder for notifying an error detection when a signal point other than a signal point that are permitted to be used is received, and performing an error correction by changing the signal point to a signal point which has a smaller hamming distance.