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. 27, 2010
Filed:
Feb. 19, 2008
Shiro Sakiyama, Kyoto, JP;
Yusuke Tokunaga, Hyogo, JP;
Shiro Dosho, Osaka, JP;
Toru Iwata, Osaka, JP;
Takashi Hirata, Osaka, JP;
Hideki Yoshii, Kyoto, JP;
Yasuyuki Doi, Kyoto, JP;
Makoto Hattori, Kyoto, JP;
Shiro Sakiyama, Kyoto, JP;
Yusuke Tokunaga, Hyogo, JP;
Shiro Dosho, Osaka, JP;
Toru Iwata, Osaka, JP;
Takashi Hirata, Osaka, JP;
Hideki Yoshii, Kyoto, JP;
Yasuyuki Doi, Kyoto, JP;
Makoto Hattori, Kyoto, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A delay element generates a delayed clock signal which transitions with a delay from a rising (or falling) of a reference clock signal by a delay amount determined based on an output of a loop filter. A signal generation circuit generates two signals which complementarily change according to rising and falling of the reference clock signal and a transition of the delayed clock signal. A charge pump circuit performs on the loop filter, according to these two signals, a push (or pull) operation during an interval extending from a rising (or falling) of the reference clock signal to the transition of the delayed clock signal and a pull (or push) operation during an interval extending from the transition of the delayed clock signal to a falling (or rising) of the reference clock signal.