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:
Jan. 19, 2010
Filed:
Nov. 13, 2007
Nagamasa Mizushima, Fujisawa, JP;
Motoyasu Tsunoda, Sagamihara, JP;
Kunihiro Katayama, Chigasaki, JP;
Nagamasa Mizushima, Fujisawa, JP;
Motoyasu Tsunoda, Sagamihara, JP;
Kunihiro Katayama, Chigasaki, JP;
Renesas Technology Corp., Tokyo, JP;
Abstract
A memory card has: a flash memory chip for storing digital certificates and a seed of random numbers; a controller chip which can execute a managing process for managing the digital certificates and a random number generating process for generating the pseudo random numbers by using the seed of random numbers; and an IC card chip which can execute an authenticating process for authenticating personal identification information (PIN) inputted from a host apparatus and an encrypting process for encrypting the seed of random numbers. Thus, a processing time of security processes is reduced while assuring safety of the security processes.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile