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:
Jun. 02, 2009
Filed:
Feb. 23, 2006
Kennedy K. Cheruiyot, Rochester, MN (US);
Michael T. Repede, Rochester, MN (US);
James D. Strom, Rochester, MN (US);
Kennedy K. Cheruiyot, Rochester, MN (US);
Michael T. Repede, Rochester, MN (US);
James D. Strom, Rochester, MN (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
An oscillating circuit includes a charge pump, a loop filter and a voltage controlled oscillator. The charge pump and the loop filter generates a differential voltage signal. The loop filter is responsive to the differential voltage signal and generates a filtered differential voltage control signal that is proportional to the differential voltage signal. The voltage controlled oscillator is responsive to the filtered differential voltage control signal and generates a periodic signal that has a frequency that corresponds to the filtered differential voltage control signal.