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:
Aug. 23, 2011
Filed:
Nov. 01, 2006
Michihito Ootsuki, Tokyo, JP;
Masazumi Sukekawa, Saitama, JP;
Mitsutaka Iwasaki, Tokyo, JP;
Toshihiro Tsukagoshi, Tokyo, JP;
Michihito Ootsuki, Tokyo, JP;
Masazumi Sukekawa, Saitama, JP;
Mitsutaka Iwasaki, Tokyo, JP;
Toshihiro Tsukagoshi, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Ricoh Company, Ltd, Tokyo, JP;
Abstract
A PLL control circuit, which outputs a PLL clock in response to a reference clock, is provided with a frequency adjustment circuit which performs frequency adjustment such that the PLL clock frequency is substantially constant even when the reference clock varies. The frequency adjustment circuit changes a set value in a counter, which determines the PLL clock frequency, in accordance with the variation in the reference clock frequency.