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:
Jul. 07, 2009
Filed:
Oct. 04, 2007
Applicants:
Seiji Heike, Kawagoe, JP;
Tomihiro Hashizume, Hatoyama, JP;
Inventors:
Seiji Heike, Kawagoe, JP;
Tomihiro Hashizume, Hatoyama, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H03L 7/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
In an oscillating apparatus or a frequency detecting apparatus in which a center frequency and a variable frequency range are freely or optionally established with a high stability and a high accuracy, a first frequency component of a signal from a first crystal oscillator and a second frequency component of another signal from a second crystal oscillator are subjected to a synthesizing operation in a synthesizer and to other operations to obtain a desired center frequency and a desired variable frequency range.