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:
Jul. 12, 2016
Filed:
Dec. 04, 2013
Lenovo Enterprise Solutions (Singapore) Pte. Ltd., Singapore, SG;
Candice L. Coletrane, Durham, NC (US);
Sasa Cvijetic, Raleigh, NC (US);
Bradley D. Herrman, Cary, NC (US);
Shanay S. Kinds, Cary, NC (US);
Pravin S. Patel, Cary, NC (US);
Lenovo Enterprise Solutions (Singapore) Pte. Ltd., Singapore, SG;
Abstract
A control circuit is provided on a printed circuit board to detect the presence of a memory module installed in at least one of a plurality of memory module connectors, wherein installation of the memory module is known to cause impedance to decrease in a segment of a daisy chain memory circuit. The impedance of a first signal conductor of the daisy chain memory circuit is automatically altered to reduce a mismatch in impedance between the first signal conductor and the segment in response to detecting the presence of the memory module in the connector. A metal element is incorporated into the printed circuit board a spaced distance from the first signal conductor, and the control circuit may selectively activate one or more relays to cause the metal element to function as either a floating trace or a ground reference.