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. 26, 2003
Filed:
Jan. 26, 1999
Atsushi Miyashita, Tokorozawa, JP;
Toshiyuki Akiyama, Tokorozawa, JP;
Seiichi Sano, Higashiyamato, JP;
Hiroyuki Takesue, Kodaira, JP;
Tatuhiro Nakada, Kodaira, JP;
Nobuo Tsukamoto, Akishima, JP;
Hitachi Denshi Kabushiki Kaisha, Tokyo, JP;
Abstract
A communication method in an orthogonal frequency division multiplexing modulation communication system includes a transmission apparatus in which a frequency bandwidth of a signal modulated in accordance with an orthogonal frequency division multiplexing modulation system is changed and the modulated signal is transmitted and a receiving apparatus in which the modulated signal is received and a frequency bandwidth for demodulation of the received signal is changed to follow the change of the frequency bandwidth of the modulated signal.