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. 12, 2005
Filed:
Jun. 11, 2003
Ken Fujita, Tokyo, JP;
Ken Fujita, Tokyo, JP;
Oki Electric Industry Co., Ltd., Tokyo, JP;
Abstract
A correction circuit for a voltage-controlled oscillator (VCO) is arranged outwardly of the voltage-controlled oscillator. The oscillation of the selected frequency and the frequency modulation are carried out independently of each other. The correction circuit includes a frequency selection controller generating a frequency selection signal of the DC potential, and a frequency modulation controller generating a modulation adjusting signal responsive to the input of a modulating signal. When a frequency modulation control signal, including the DC potential of the frequency selection signal and the modulation adjusting signal, is supplied to the voltage-controlled oscillator, the capacitance is lowered even if the frequency is increased, thus allowing the modulation degree to frequency to be decreased to a substantially constant level.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile