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. 09, 2015
Filed:
Jul. 11, 2012
Teruhiko Kamei, Kanagawa, JP;
Cuong Trinh, Fremont, CA (US);
Atsushi Inoue, Tokyo, JP;
Toshiyuki Takahashi, Fujisawa, JP;
Teruhiko Kamei, Kanagawa, JP;
Cuong Trinh, Fremont, CA (US);
Atsushi Inoue, Tokyo, JP;
Toshiyuki Takahashi, Fujisawa, JP;
SANDISK TECHNOLOGIES INC., Plano, TX (US);
Abstract
A non-volatile storage system that performs a multi-stage programming process to program non-volatile storage to a set of data threshold voltage distributions. The multi-stage programming process includes performing a first stage of the multi-stage programming process to change threshold voltages of at least a subset of the non-volatile storage elements from an erased distribution to one or more intermediate distributions, performing an intermediate stage of the multi-stage programming process to change threshold voltages of at least some of the non-volatile storage elements to appropriate distributions of the data threshold voltage distributions, and performing a later stage of the multi-stage programming process, after performing the intermediate stage of the multi-stage programming process, to tighten only a subset of the data threshold voltage distributions.