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. 11, 2000
Filed:
Oct. 24, 1997
Applicant:
Inventor:
Emilio Miguel Yero, Aix-En-Provence, FR;
Assignee:
SGS-Thomson Microelectronics S.A., Saint Genis, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
365222 ; 36518511 ; 36518529 ; 36518907 ; 365218 ; 36523003 ;
Abstract
Disclosed is an electrically modifiable, multilevel non-volatile memory including internal refresh means. If a memory with n sectors is considered, only n-1 sectors are allocated simultaneously to the storage of the data elements, the remaining sector or refresh sector is used to receive the duplicated data from one of the n-1 sectors assigned simultaneously to the storage of the data elements. After each duplication, the duplicated sector is replaced by said refresh sector and itself becomes the new refresh sector, in such a way that that all the n sectors, in turn, take part in the refresh operation.