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:
Jun. 29, 2006
Yoshihiro Shona, Tokyo, JP;
Yoshihiro Shona, Tokyo, JP;
Oki Semiconductor Co., Ltd., Tokyo, JP;
Abstract
A data storage apparatus includes a flash memory and a control unit that controls the rewriting of data in the flash memory. The flash memory is divided into sectors, each of which is completely erasable in a time T. During a rewriting operation, multiple sectors are erased simultaneously for a time U less than T, and new data are written in a sector that has undergone multiple erasures and is now fully erased. The new data typically replace data stored in a sector that proceeds to be erased during multiple rewriting operations. The duration of each rewriting operation is reduced because the erasing process lasts for time U instead of time T.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile