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. 29, 2013
Filed:
Mar. 10, 2011
Hayden C. Cranford, Cary, NC (US);
Daniel P. Greenberg, Raleigh, NC (US);
Joseph M. Stevens, Morrisville, NC (US);
Westerfield J. Ficken, Cary, NC (US);
Hayden C. Cranford, Cary, NC (US);
Daniel P. Greenberg, Raleigh, NC (US);
Joseph M. Stevens, Morrisville, NC (US);
Westerfield J. Ficken, Cary, NC (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A test circuit for a serial link receiver includes a first current source coupled to a first input of the serial link receiver, and a second current source coupled to a second input of the serial link receiver. The first current source is symmetrically matched to the second current source. A first switch of the first current source is turned on to permit a charge-retaining mechanism thereof to be charged. A second switch of the first current source is turned on to permit the retained charge retained to be asserted on the first input. The charge turns on a control switch of the first current source, through which the charge is asserted on the first input. A charge-draining mechanism of the first current source is turned on to thereafter permit the charge to be drained in a controlled manner after the charge has been asserted.