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:
Dec. 23, 2003
Filed:
Mar. 27, 2002
Shigetaka Asano, Kasugai, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A PLL circuit having a wide oscillation frequency range for reducing a jitter. The PLL circuit including a phase comparator for generating a phase difference signal by comparing a phase of a reference signal with a phase of a comparison signal. An oscillator generates an oscillation frequency signal having an oscillation frequency according to a control signal having a current corresponding to the phase difference signal. A detection circuit generates a detection signal by detecting the current of the control signal. A signal generation circuit generates a signal for changing the oscillation frequency of the oscillator such that the current of the control signal is within a predetermined range in accordance with the detection signal.