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:
Aug. 05, 2014
Filed:
Jun. 30, 2009
Nils Graef, Foster City, CA (US);
Erich F. Haratsch, Bethlehem, PA (US);
Milos Ivkovic, Sunnyvale, CA (US);
Victor Krachkovsky, Allentown, PA (US);
Andrei Vityaev, San Jose, CA (US);
Johnson Yen, Fremont, CA (US);
Nils Graef, Foster City, CA (US);
Erich F. Haratsch, Bethlehem, PA (US);
Milos Ivkovic, Sunnyvale, CA (US);
Victor Krachkovsky, Allentown, PA (US);
Andrei Vityaev, San Jose, CA (US);
Johnson Yen, Fremont, CA (US);
LSI Corporation, San Jose, CA (US);
Abstract
Methods and apparatus are provided for intercell interference mitigation using modulation coding. During programming of a flash memory, a modulation encoding is performed that selects one or more levels for programming the flash memory such that a reduced number of cells in the flash memory are programmed with a value that violates one or more predefined criteria. During a reading of a flash memory, a modulation decoding is performed that assigns one or more levels to cells in the flash memory such that a reduced number of cells in the flash memory are read with a value that violates one or more predefined criteria. The predefined criteria can be based, for example, on one or more of an amount of disturbance caused by the programmed cell; a voltage shift of a programmed cell: a voltage stored by a programmed cell; an amount of change in current through a programmed cell; and an amount of current through a programmed cell.