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:
Sep. 22, 2020
Filed:
Jan. 29, 2020
Canon Kabushiki Kaisha, Tokyo, JP;
Yuji Nakajima, Tokyo, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
A fractional frequency divider comprises: a fractional frequency divider circuit configured to, by using an integer frequency division signal obtained by dividing an input signal by an integer frequency division ratio, generate a fractional frequency division signal into which the input signal is divided by a fraction frequency division ratio; a latch circuit configured to capture a frequency control signal representing a specified fraction frequency division ratio in synchronization with the fractional frequency division signal; and a control circuit configured to generate an integer control signal for setting an integer frequency division ratio corresponding to a specified fraction frequency division ratio in synchronization with an integer frequency division signal, based on a captured frequency control signal. The fractional frequency divider circuit updates the integer frequency division ratio by referring to the integer control signal in synchronization with the input signal.