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:
Dec. 25, 2012
Filed:
Jul. 23, 2008
Bernard J. Griffiths, Ben Lomond, CA (US);
Bernard J. Griffiths, Ben Lomond, CA (US);
Sony Corporation, Tokyo, JP;
Sony Electronics Inc., Park Ridge, NJ (US);
Abstract
A system and method for effectively generating an electronic control signal includes a loop filter that has a first capacitor, a second capacitor, and a damping resistor. The first capacitor typically has a significantly greater capacitance than said second capacitor. A primary charge pump provides a primary charge current to the loop filter, and a damping charge pump provides a damping charge current to the loop filter. The loop filter responsively generates the electronic control signal for regulating the output frequency of a voltage-controlled oscillator. All components of the loop filter are sized to be implemented as part of an integrated circuit device.