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:
Feb. 03, 2009
Filed:
May. 17, 2006
Minhan Chen, Cary, NC (US);
Louis Hsu, Fishkill, NY (US);
Joseph Natonio, Wappingers Falls, NY (US);
Karl D. Selander, Hopewell Junction, NY (US);
Michael A. Sorna, Hopewell Junction, NY (US);
Steven J. Zier, Hopewell Junction, NY (US);
Minhan Chen, Cary, NC (US);
Louis Hsu, Fishkill, NY (US);
Joseph Natonio, Wappingers Falls, NY (US);
Karl D. Selander, Hopewell Junction, NY (US);
Michael A. Sorna, Hopewell Junction, NY (US);
Steven J. Zier, Hopewell Junction, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A signal detector and method to detect the presence or absence of an incoming differential signal. The method nullifies the DC off-set of the signal detector so that it can detect a signal within a very narrow window. The common mode levels of the signal and reference paths are used for calibration which is done automatically by use of an embedded algorithm residing in a digital block. The calibration range and resolution are predetermined to cope with the technology, modeling, design methodology and human error.