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. 08, 2008
Filed:
May. 31, 2006
Daisaburo Takashima, Yokohama, JP;
Shuso Fujii, Kawasaki, JP;
Takaya Suda, Kamakura, JP;
Hiroshi Sukegawa, Tokyo, JP;
Daisaburo Takashima, Yokohama, JP;
Shuso Fujii, Kawasaki, JP;
Takaya Suda, Kamakura, JP;
Hiroshi Sukegawa, Tokyo, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A memory system includes a ferroelectric memory formed by arranging a plurality of memory cells having a ferroelectric capacitor and cell transistor, a flash EEPROM formed by arranging a plurality of memory cells having a floating gate and capable of electrically erasing and writing data, a control circuit configured to control the ferroelectric memory and flash EEPROM, and an interface circuit configured to communicate with the outside. The flash EEPROM stores data. The ferroelectric memory stores at least one of root information for storing the data, directory information, the file name of the data, the file size of the data, file allocation table information storing the storage location of the data, and the write completion time of the data.