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. 05, 2007
Filed:
Mar. 11, 2004
Applicant:
Masaki Ichihara, Tokyo, JP;
Inventor:
Masaki Ichihara, Tokyo, JP;
Assignee:
NEC Corporation, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 1/18 (2006.01); H03L 1/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
In order to always maintain a frequency of an oscillator within a proper range, the frequency chages due to temperature and a secular change, a method is disclosed in which the secular change is calculated from past control information, and the frequency of the oscillator is corrected according to the secular change. A storing unit records the past control information for the oscillator. A processing unit calculates the secular change of the frequency of the oscillator from the past control information. Thereafter, the processing unit gives the oscillator new control information for correcting the calculated secular change.