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. 24, 2012
Filed:
Jan. 29, 2009
Applicants:
Benjamin a Fox, Rochester, MN (US);
William P Hovis, Rochester, MN (US);
Thomas W Liang, Rochester, MN (US);
Paul Rudrud, Rochester, MN (US);
Inventors:
Benjamin A Fox, Rochester, MN (US);
William P Hovis, Rochester, MN (US);
Thomas W Liang, Rochester, MN (US);
Paul Rudrud, Rochester, MN (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 7/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A memory device is connected through an interface to a memory controller. The controller's reference voltage is set based on a driver's impendence of the memory device during driver training. The voltage is applied to a reference resistor pair at the controller and changed until the voltage level switches. The voltage is then set at the reference resistor pair of the controller.