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. 25, 2017
Filed:
Sep. 28, 2012
Duke University, Durham, NC (US);
Arthur Robert Calderbank, Durham, NC (US);
Adam N. Jacobvitz, Durham, NC (US);
Daniel J. Sorin, Durham, NC (US);
Duke University, Durham, NC (US);
Abstract
Systems and Methods are provided for increasing the number of writes to a page of non-volatile memory before the page must be erased. According to an embodiment, instead of writing a dataword directly to memory, a codeword is written to the memory location. The codeword is selected to minimize overwrite (e.g., bit-flipping) and to maximize the spread of wear across memory cells. In accordance with various embodiments of the invention, coset coding is integrated with error correction encoding; and once the previous state of a page is determined, a coset representative is selected on the basis of maximizing the number of writes to the page before erasing.