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. 07, 1998
Filed:
Oct. 11, 1994
Sakutaro Sato, Kawasaki, JP;
Naonobu Fujimoto, Kawasaki, JP;
Fujitsu Limited, Kanagawa, JP;
Abstract
Provision is made of a phase-locked loop circuit including a voltage-controlled oscillator, a phase comparator, and a low-pass filter, a pulse-cancelling processing unit, a pulse-cancelling control unit, and a divider circuit. By dividing the pulse-cancelling request signal of the pointer-action into several bits by the divider circuit, the pulse-cancelling control unit gradually changes the input phase to the phase comparator or the control voltage to the voltage-controlled oscillator in several stages from the state before the 1-bit pulse-cancelling to the state of the 1-bit pulse-cancelling so that the phase of the output clock signal from the voltage-controlled oscillator matches the 1-bit pulse-cancelled input clock signal. By this, phase control of the output clock signal is performed in units of less than 1-bit and jitter is suppressed.