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. 01, 2013
Filed:
Jan. 21, 2011
Frederick C. Neumeyer, Austin, TX (US);
Greg Yancey, Austin, TX (US);
Pedro Sanchez, Austin, TX (US);
Iftekhar Rahman, Austin, TX (US);
Frederick C. Neumeyer, Austin, TX (US);
Greg Yancey, Austin, TX (US);
Pedro Sanchez, Austin, TX (US);
Iftekhar Rahman, Austin, TX (US);
Spansion LLC, Sunnyvale, CA (US);
Abstract
Methods and systems for addressing threshold voltage shifts of memory cells. A method includes reading a pattern of data from a first plurality of memory cells, comparing the read of the pattern of data with a known pattern of data using a reference, and if the read of the pattern of data and the known pattern of data do not match, adjusting the reference to find a reference level that results in a matching of a read of the pattern of data and the known pattern of data. Thereafter, trim sector data is read into a second plurality of memory cells using the adjusted reference level.