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:
Dec. 23, 2008
Filed:
Sep. 02, 2005
Masahiro Takiguchi, Anjo, JP;
Masahiro Takiguchi, Anjo, JP;
Denso Wave Incorporated, Tokyo, JP;
Abstract
In a noncontact information carrier reader, a receiving unit receives a response wave transmitted from a noncontact information carrier. The response wave is generated by modulating the carrier wave based on a response signal. An amplifying unit amplifies carrier wave components contained in the received response wave based on a first gain, and amplifies response signal components contained in the received response wave based on a second gain. The second gain is higher than the first gain. A synchronized-detection demodulator demodulates the response signal components contained in the response wave by mixing the transmitted carrier wave and the response wave amplified by the amplifying unit.