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:
Apr. 22, 1997
Filed:
May. 31, 1995
Yasuhiro Arai, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
An IC card-type modem comprises a modulation demodulation unit, an impedance conversion unit, an impedance matching unit, and a matching selection unit. The modulation demodulation unit connected to a terminal equipment modulates and demodulates a data stored in the terminal equipment. The impedance conversion unit converts impedances between the modulation demodulation unit and a line. The impedance matching unit has a plurality of impedance matching elements having impedances that differ one another. The matching selection unit selects an impedance matching element which matches the impedance of the modulation demodulation unit to the impedance of the line within the plurality of impedance matching elements, and connects the selected impedance matching element to the impedance conversion unit.
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