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. 12, 2008
Filed:
Jul. 07, 2005
Applicants:
Gil Asa, Zikhron Ya'akov, IL;
David Moshe, D.N. Gilboa, IL;
Ido Bourstein, Pardes Hana, IL;
Inventors:
Assignee:
Marvell Semiconductor Israel Ltd., Yokneam, IL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03B 5/04 (2006.01); H03B 5/24 (2006.01); H03K 3/03 (2006.01); H03L 1/00 (2006.01); H03L 5/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A digitally controlled oscillator circuit is provided that comprises a ring oscillator including multiple inverters; multiple digitally controlled capacitors (DCCs), each coupled to apply a digitally controllable amount of capacitance to an output of a different one of the inverters; and control circuitry operable to change an amount of capacitance applied to each inverter during operation of the ring oscillator and to cause the multiple DCCs to apply substantially the same amounts of capacitance to each of the inverter throughout operation of the ring oscillator.