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. 08, 2008
Filed:
Aug. 11, 2003
Luca DE Ambroggi, Catania, IT;
Carmelo Condemii, Gravina Di Catania, IT;
Luca De Ambroggi, Catania, IT;
Carmelo Condemii, Gravina Di Catania, IT;
STMicroelectronics S.r.l., Agrate Brianza, IT;
Abstract
The nonvolatile storage device is made up of a memory array divided into a plurality of data-storage units and a plurality of redundancy-storage units for replacing respective failed data-storage units. A control unit detects the functionality of the data-storage units and, in case of failure, enables a redundancy-detection unit having a plurality of volatile-memory elements connected through a sequential daisy-chain connection. A nonvolatile memory unit stores, in a nonvolatile way, the redundancy information through a data bus, connected both to the redundancy-detection unit and to the nonvolatile memory unit; in the event of failure, the redundancy-detection unit transfers the addresses of the failed data-storage unit to the nonvolatile memory unit for their nonvolatile storage.