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:
Jul. 11, 2006
Filed:
Oct. 15, 2001
Applicant:
Saori Nishimura, Chiba, JP;
Inventor:
Saori Nishimura, Chiba, JP;
Assignee:
Kabushiki Kaisha Toshiba, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 9/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
In the case of an IC card having a decoding key for decoding data and an encoding key for encoding the data which are generated inside or set by an external unit, when a key takeout instruction for taking out the decoding key and encoding key in the IC card to an external unit is input, the decoding key and encoding key are encoded by a plurality of other keys set in the IC card and then transmitted to an external unit.