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:
Apr. 28, 2009
Filed:
Jan. 30, 2004
Applicants:
Hiromi Ebara, Hiroshima, JP;
Shinji Kawano, Hiroshima, JP;
Futoshi Nakabe, Hiroshima, JP;
Inventors:
Assignee:
Panasonic Corporation, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 12/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A semiconductor memory card that has a sufficient storage capacity when an EC application writes data to a storage is provided. A usage area for the EC application in an EPPROMin a TRMis expanded. The expansion is such that a partition generated in a flash memoryoutside the TRMis assigned to the EC application while a partition table is allocated in the internal EEPROM. Because the partition table is in the TRM, only a CPUin the TRMis able to access the generated partition table. Secrecy of stored contents increases because the access to the expanded area is limited to the CPUin the TRM