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. 11, 2003
Filed:
Aug. 18, 1999
Fujitsu Limited, Kawasaki, JP;
Abstract
The present invention relates to a method and system capable of gaining access (data transfer) to portable type mediums whose number is larger than the number of ports on a processing unit side. Thus, in this invention, by using a demultiplexer, to one or more portable type medium ports provided in a processing unit there are connected a plurality of portable type mediums whose number is larger than the number of the ports. The demultiplexer selectively switches the ports and, of the plurality of portable type mediums, the mediums to be accessed by the processing unit for establishing the connections therebetween. This invention is applicable to data transfer between a plurality of portable type mediums such as IC cards capable of storing digital money and a processing unit having an ability to gain access to these portable type mediums.