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:
Mar. 17, 2000
Shinkichi Gama, Yokohama, JP;
Shogo Shibazaki, Yokohama, JP;
Shinkichi Gama, Yokohama, JP;
Shogo Shibazaki, Yokohama, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
In a storage device for maintaining information when power is OFF and being capable of executing a test process based on test signals, a test terminal inputs the test signals and an instruction part sends a read out instruction for instructing a memory storing secret data to read out data. Moreover, a decoding part decodes whether or not the data read out by the memory in response to the data reading instruction is the secret data stored in the memory and a maintaining part maintains information in a volatile state resulting from the decoding part. Furthermore, a cutting-off part cuts off the test signals input from the test terminal when the maintaining part maintains information indicating that the secret data is stored.