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. 10, 2017
Filed:
Mar. 15, 2013
Western Digital Technologies, Inc., Irvine, CA (US);
Guangming Lu, Irvine, CA (US);
Dengtao Zhao, Santa Clara, CA (US);
Western Digital Technologies, Inc., Irvine, CA (US);
Abstract
Embodiments of solid-state storage devices provided herein include a voltage threshold calculation mechanism to calculate an optimal voltage read threshold for minimizing read errors. The system may be configured to determine optimal reference voltage value(s) by interpolating a pair of reads at two different threshold levels to determine the point that generates the least number of errors. In some cases, the evaluation may be an approximation based on a Cumulative Distribution Function (CDF) of errors of a first type and a second type. In other cases, the evaluation may be a calculation of an optimal voltage threshold based on the CDF of the errors. In yet other cases, the evaluation may be based on the Probability Density Function (PDF) of the errors.