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:
Apr. 06, 2010
Filed:
May. 06, 2008
Hayden Clavie Cranford, Jr., Cary, NC (US);
Christian I. Menolfi, Langnau am Albis, CH;
Martin Leo Schmatz, Rueschlikon, CH;
Thomas H. Toifl, Zurich, CH;
Hayden Clavie Cranford, Jr., Cary, NC (US);
Christian I. Menolfi, Langnau am Albis, CH;
Martin Leo Schmatz, Rueschlikon, CH;
Thomas H. Toifl, Zurich, CH;
International Business Machines Corporation, Armonk, NY (US);
Abstract
A driver circuit is provided comprising at least two equal main units (MU) each comprising at least two sub units (SU) coupled to a data output (dout). Each sub unit (SU) is adapted to represent a respective predetermined impedance. Each main unit (MU) is adapted to that, when in a data mode, each sub unit (SU) of the respective main unit (MU) is switchable to either a first or second reference potential depending on a data signal to transmit. Each main unit (MU) is further adapted to that, when in a termination mode, the sub units (SU) of the respective main unit (MU) are switched to either the first or second reference potential such that an output of the respective main unit (MU) is neutral with respect to the driving of the data output (dout) to the first or second reference potential.