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.

Date of Patent:
May. 27, 2003

Filed:

May. 22, 2002
Applicant:
Inventors:

Ryuji Mano, Hyogo, JP;

Tsutomu Yoshimura, Hyogo, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03L 7/00 ;
U.S. Cl.
CPC ...
H03L 7/00 ;
Abstract

A signal according to a phase difference in a first phase-locked loop is transferred to a power supply line as an operation power supply voltage for a first oscillation circuit included in the first phase-locked loop. The potential of the power supply line is supplied to a second oscillation circuit in a second phase-locked loop as an operation power supply voltage. The second phase-locked loop is used to generate a clock signal phase-synchronized to the input clock signal. Consequently, a clock generator is implemented that oscillates at a central frequency to generate a recovered clock signal even when a variation is caused in a manufacturing parameter.


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