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:
Dec. 03, 1996
Filed:
Mar. 22, 1994
Yasuo Iijima, Yokohama, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
In a data transmission system, a card reader/writer provided in a terminal device and an IC card are connected through a contact unit, the IC card is started in response to a signal from the terminal device via the card reader/writer, and transmission/reception of data is subsequently performed. In this data transmission system, the IC card has a CPU for outputting a predetermined answer-to-reset data after the IC card is started and controlling at least two protocols, and a memory for storing protocol type information for determining a protocol to be used from the protocols. The control unit is operated upon starting the IC card, renews the protocol type information in outputting the answer-to-reset data, and returns the renewed protocol type information to an initial one in response to transmission/reception of the data.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile