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:
May. 03, 2011
Filed:
May. 31, 2006
Toshio Ogawa, Kawasaki, JP;
Yoshihiro Takemae, Kawasaki, JP;
Yoshinori Okajima, Kawasaki, JP;
Tetsuhiko Endo, Kawasaki, JP;
Yasuro Matsuzaki, Kawasaki, JP;
Toshio Ogawa, Kawasaki, JP;
Yoshihiro Takemae, Kawasaki, JP;
Yoshinori Okajima, Kawasaki, JP;
Tetsuhiko Endo, Kawasaki, JP;
Yasuro Matsuzaki, Kawasaki, JP;
Fujitsu Semiconductor Limited, Yokohama, JP;
Abstract
A conversion control unit sets a converting function of a write data conversion unit or a read data conversion unit enabled or disabled for each controller. Accordingly, for a controller which needs original external data, the external data can be inputted and outputted, whereas for a controller which needs converted internal data, the internal data can be inputted and outputted. A data converting function of a conventional controller can be realized in a semiconductor memory, which can reduce the load on the controller. As a result, the performance of a system can be improved. A disabled controller which has no access right cannot read correct data (original data before conversion). Hence, the security of data written into the semiconductor memory can be protected.