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:
Jun. 09, 2009
Filed:
Jul. 26, 2007
Hiroyoshi Takeuchi, Aichi-ken, JP;
Hiroyoshi Takeuchi, Aichi-ken, JP;
Denso Wave Incorporated, Tokyo, JP;
Abstract
A handy reader/writer has a data transmitting and receiving units and a control unit. The transmitting and receiving units communicate with a contactless IC card placed within a communication area of the communicating unit by using first electromagnetic waves outputted from an antenna. The control unit judges whether or not the card is now in communication with a second reader/writer. If the control unit detects the card communicating with the second reader/writer by using second electromagnetic waves, the control unit forbids the antenna outputting the first electromagnetic waves. If the control unit does not detect the card communicating with the second reader/writer, the control unit starts communicating with the card placed. The second reader/writer does not output the second electromagnetic waves when detecting the first electromagnetic waves, and starts communicating with the card when detecting no first electromagnetic waves.