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. 20, 2007
Filed:
Nov. 09, 2005
Shiro Dosho, Osaka, JP;
Takashi Morie, Osaka, JP;
Kouji Okamoto, Osaka, JP;
Yuji Yamada, Osaka, JP;
Kazuaki Sogawa, Osaka, JP;
Shiro Dosho, Osaka, JP;
Takashi Morie, Osaka, JP;
Kouji Okamoto, Osaka, JP;
Yuji Yamada, Osaka, JP;
Kazuaki Sogawa, Osaka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
The phase-locked loop circuit includes a gain setting circuit for setting a gain of a voltage controlled oscillator, and a time-constant setting circuit for setting a time constant, which is determined by the amount of current in a charge pump circuit and a capacitance value of a loop filter. The gain setting circuit sets the gain to a predetermined value, and the time-constant setting circuit sets the time constant to a predetermined value, whereby the loop band width of the phase-locked loop circuit is set to a desired value.