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:
Jun. 22, 2004
Filed:
Dec. 31, 2002
Sau Ching Wong, Hillsborough, CA (US);
Multi Level Memory Technology, Reno, NV (US);
Abstract
A multi-bit-per-cell non-volatile memory performs refresh operations that move data to different physical storage locations. The movement of data may extend the life of a non-volatile memory by avoiding repetitive erasing and writing of the same data value in the same memory cell. A memory mapping circuit in the memory adjusts for different storage configuration that the refresh operations create. In a particular embodiment, a refresh operation swaps the physical locations of two data blocks, and alternates between two mappings of physical addresses to logical addresses.
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