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. 07, 1989
Filed:
Jan. 28, 1988
Fumio Izawa, Sagamihara, JP;
Masayuki Shinozaki, Yokohama, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
An IC element is incorporated in a card substrate, and includes at least a memory in which data can be stored and from which it can be read out. A pre-processing section is incorporated in the card substrate, to receive an output from the IC element. The pre-processing section pre-enhances readout data from the memory of the IC element, so as to substantially attenuate high-frequency components of the data. A transducer is incorporated in the card substrate to receive an output from the pre-processing section. The transducer generates a magnetic field corresponding to the data read out from the memory of the IC element and supplied via the pre-processing section.