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:
Jul. 12, 2011
Filed:
Apr. 18, 2007
Yuko Yoshida, Tokyo, JP;
Yuko Yoshida, Tokyo, JP;
Felica Networks, Inc., Tokyo, JP;
Abstract
An information processing terminal is disclosed that is allowed to carry out contactless data transmission or reception with a reading or writing device by use of a magnetic field. The information processing terminal includes a data transmitter or receiver, a signal processor, and a load modulator. The data transmitter or receiver is configured to generate an induced voltage from a magnetic field generated from the reading or writing device at the time of data reception, and send a transmission signal to the read/write reading or writing device at the time of data transmission. The signal processor is configured to generate a response signal based on the induced voltage. The load modulator controls a variable resistance based on the induced voltage and carries out load modulation relating to the transmission signal based on the response signal and the variable resistance.