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:
Mar. 26, 2013
Filed:
Nov. 16, 2009
Masaaki Yamada, Yokohama, JP;
Taku Takaki, Fujisawa, JP;
Yuhei Niwa, Yokohama, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
In wireless electric power transmission and reception, the efficiency of transmission and reception is improved and a device to which electric power can be supplied is specified to improve security. Two antennas with different resonance frequencies are provided, and the resonance frequencies of a reception loop and a reception coil of a receiver are corrected in accordance with a reception status of a carrier transmitted from a transmitter to improve the efficiency of transmission and reception. Further, data transmitted from the transmitter are demodulated on the basis of the reception levels of two antennas with different resonance frequencies, and the data are transmitted to the transmitter using a reflective wave to perform data transmission and reception. By using this, device authentication is performed, and security is improved.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile