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:
Aug. 19, 2014
Filed:
Aug. 30, 2012
Anand Venkitachalam, Bangalore, IN;
Sateesh Desireddi, Andhra Pradesh, IN;
Jayaprakash Naradasi, Bangalore, IN;
Manuel Antonio D'abreu, El Dorado Hills, CA (US);
Stephen Skala, Fremont, CA (US);
Anand Venkitachalam, Bangalore, IN;
Sateesh Desireddi, Andhra Pradesh, IN;
Jayaprakash Naradasi, Bangalore, IN;
Manuel Antonio D'Abreu, El Dorado Hills, CA (US);
Stephen Skala, Fremont, CA (US);
SanDisk Technologies Inc., Plano, TX (US);
Abstract
A method includes, in a data storage device that includes a non-volatile memory, selecting an updated reference voltage as one of a reference voltage, a first alternate reference voltage and a second alternate reference voltage. The first alternate reference voltage and the second alternate reference voltage are calculated based on the reference voltage and based on a voltage increment. Selection of the updated reference voltage is based on a comparison of error counts, each error count associated with a unique one of the reference voltage, the first alternate reference voltage, and the second alternate reference voltage. The method includes resetting the reference voltage to the updated reference voltage, resetting the voltage increment to a reset voltage increment that is smaller than the voltage increment, and selecting an additional updated reference voltage based on the reset reference voltage and based on the reset voltage increment.