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. 03, 2007
Filed:
Dec. 14, 2004
Applicant:
Minoru Kozaki, Suwa, JP;
Inventor:
Minoru Kozaki, Suwa, JP;
Assignee:
Seiko Epson Corporation, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03L 7/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
A DC-DC converter is provided. The DC-DC converter is connected to a PLL circuit, supplying a voltage at least to a power source terminal of a voltage controlled oscillator of the PLL circuit. A frequency of a ripple voltage included in the voltage is less than a natural frequency of the PLL circuit or more than one-half of a frequency of an output signal of the PLL circuit.