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:
Nov. 25, 2008
Filed:
Jul. 29, 2005
Hiroshi Itahara, Kanagawa, JP;
Hiroshi Itahara, Kanagawa, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A synchronous follow-up apparatus includes a PLL portion that outputs a first clock signal, and a control loop portion. The control loop portion includes a reference frequency signal generating portion that outputs a reference frequency signal, a clock signal generating portion that generates a second clock signal having the same frequency as a frequency of the first clock signal based on the reference frequency signal generated by the reference frequency signal generating portion, and a frequency control signal generating portion that generates a frequency control signal to change the frequency of the second clock signal based on a frequency difference between the first clock signal and the second clock signal that occurs after a predetermined time and outputs the frequency control signal to the clock signal generating portion.