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. 11, 2013
Filed:
Dec. 03, 2010
Michele M. Franceschini, White Plains, NY (US);
Ashish Jagmohan, White Plains, NY (US);
Luis A. Lastras-montano, Cortlandt Manor, NY (US);
Mayank Sharma, White Plains, NY (US);
Michele M. Franceschini, White Plains, NY (US);
Ashish Jagmohan, White Plains, NY (US);
Luis A. Lastras-Montano, Cortlandt Manor, NY (US);
Mayank Sharma, White Plains, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Error correction in not-and (NAND) flash memory including a system for retrieving data from memory. The system includes a decoder in communication with a memory. The decoder is for performing a method that includes receiving a codeword stored on a page in the memory, the codeword including data and first-tier check symbols that are generated in response to the data. The method further includes determining that the codeword includes errors that cannot be corrected using the first-tier check symbols, and in response second-tier check symbols are received. The second-tier check symbols are generated in response to receiving the data and to the contents of other pages in the memory that were written prior to the page containing the codeword. The codeword is corrected in response to the second-tier check symbols. The corrected codeword is output.