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:
May. 02, 2000
Filed:
Oct. 10, 1997
Hideaki Tanishima, Kasugai, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A phase comparator apparatus compares a first input signal and a second input signal to output first or second compare output signal. The apparatus includes a detector circuit and a compare output generator circuit. The detector circuit detects the phase difference between the first and second signals to output a detection signal. The compare output generator circuit determines the phase deviation between the first and second input signals using the detection signal and the second input signal. The compare output generator circuit outputs the first compare output signal when the second input signal lags behind the first input signal and outputs the second compare output signal when the second input signal leads the first input signal.