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:
Mar. 21, 2006
Filed:
Oct. 15, 2001
Applicants:
Futoshi Nakabe, Hiroshima-ken, JP;
Shinji Kawano, Hiroshima-ken, JP;
Tadakatsu Masaki, Hiroshima-ken, JP;
Inventors:
Futoshi Nakabe, Hiroshima-ken, JP;
Shinji Kawano, Hiroshima-ken, JP;
Tadakatsu Masaki, Hiroshima-ken, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 1/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A contactless integrated circuit (IC) card for providing a high-grade random number with a simple configuration. A plurality of provisional random numbers are generated according to a part of calculations to be used for generation of a random number. The plurality of provisional random numbers generated are stored. A random number is generated on the basis of one of the provisional random numbers selected in sequential order.