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:
Sep. 09, 2014
Filed:
Sep. 30, 2009
Erich F. Haratsch, Bethlehem, PA (US);
Milos Ivkovic, Sunnyvale, CA (US);
Victor Krachkovsky, Allentown, PA (US);
Nenad Miladinovic, Campbell, CA (US);
Andrei Vityaev, San Jose, CA (US);
Clifton Williamson, Saratoga, CA (US);
Johnson Yen, Fremont, CA (US);
Erich F. Haratsch, Bethlehem, PA (US);
Milos Ivkovic, Sunnyvale, CA (US);
Victor Krachkovsky, Allentown, PA (US);
Nenad Miladinovic, Campbell, CA (US);
Andrei Vityaev, San Jose, CA (US);
Clifton Williamson, Saratoga, CA (US);
Johnson Yen, Fremont, CA (US);
LSI Corporation, San Jose, CA (US);
Abstract
Methods and apparatus are provided for soft data generation for memory devices. At least one soft data value is generated for a memory device, by obtaining at least one hard read value; and generating the soft data value associated with the at least one hard read value based on statistics for reading the hard read value. The hard read value may be one or more of data bits, voltage levels, current levels and resistance levels. The generated soft data value may be one or more of (i) a soft read value that is used to generate one or more log likelihood ratios, and (ii) one or more log likelihood ratios. The statistics comprise one or more of bit-based statistics and cell-based statistics. The statistics may also optionally comprise pattern-dependent disturbance of at least one aggressor cell on the target cell, as well as location-specific statistics. At least one soft data value can be generated for a memory device, by obtaining a soft read value; and generating the soft data value associated with the soft read value based on statistics for reading the soft read value, wherein the statistics comprise one or more of location-specific statistics and pattern-dependent statistics.