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:
Jan. 28, 2014
Filed:
Dec. 21, 2012
Marvell International Ltd., Hamilton, BM;
Chi Fung Cheng, San Jose, CA (US);
Marvell International Ltd., Hamilton, BM;
Abstract
The present disclosure includes systems and techniques relating to non-volatile memory. A described technique includes monitoring read-back data from a group of memory cells that are programmable based on a group of programming voltages, each of the memory cells being configured to represent two or more bits by a single charge level, the two or more bits corresponding to two or more bit positions; determining estimated mean and standard deviation values of level distributions of the memory cells based on the read-back data; and adjusting one or more of the programming voltages based on the estimated mean and standard deviations of the level distribution such that differences among bit error rates of the bit positions are reduced.