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:
Feb. 05, 2002
Filed:
Feb. 18, 2000
Applicant:
Inventors:
Tsugumichi Shibata, Kawagawa, JP;
Tadao Takeda, Kawagawa, JP;
Toshinori Fukunaga, Kawagawa, JP;
Tomota Ieyasu, Kawagawa, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06K 1/906 ;
U.S. Cl.
CPC ...
G06K 1/906 ;
Abstract
A noncontact type IC card includes an electromagnetic induction coil, integrated circuit, and switch. The electromagnetic induction coil receives the energy of an electromagnetic field radiated from an external device. The integrated circuit can be operated by driving power supplied by the energy of the electromagnetic field. The switch is provided on the electromagnetic induction coil for receiving the energy of the electromagnetic field and switches the inductance of the electromagnetic induction coil.