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. 28, 2014
Filed:
Aug. 09, 2011
Hiroyuki Hebiguchi, Miyagi-ken, JP;
Shigetoshi Matsuta, Miyagi-ken, JP;
Masaru Koishi, Miyagi-ken, JP;
Hideyuki Nebiya, Tokyo, JP;
Hiroyuki Hebiguchi, Miyagi-ken, JP;
Shigetoshi Matsuta, Miyagi-ken, JP;
Masaru Koishi, Miyagi-ken, JP;
Hideyuki Nebiya, Tokyo, JP;
Alps Electric Co., Ltd., Tokyo, JP;
Abstract
A communication system includes a transmitter that applies an electric field, obtained by modulating an information signal for wideband communication, to a transmission medium. The transmitter includes a transmission electrode, a transmission circuit that outputs the information signal for the wideband communication, and a first band controller that controls a band of the information signal for the wideband communication. When the transmission medium is in contact with the transmission electrode and the transmission medium and the transmission electrode are capacitively coupled to each other, the first band controller performs control to provide a band that is necessary for a receiver to perform demodulation for the wideband communication, and when the transmission medium is not in contact with the transmission electrode, the first band controller performs control to provide a narrower band than the band that is necessary for the wideband communication.