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.

Date of Patent:
Aug. 10, 2021

Filed:

Jul. 04, 2017
Applicant:

Mitsubishi Electric Corporation, Tokyo, JP;

Inventors:

Koji Tsutsumi, Tokyo, JP;

Yuki Yanagihara, Tokyo, JP;

Mitsuhiro Shimozawa, Tokyo, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03L 7/087 (2006.01); H03L 7/197 (2006.01); H03L 7/093 (2006.01); H03L 7/099 (2006.01); H03L 7/089 (2006.01);
U.S. Cl.
CPC ...
H03L 7/197 (2013.01); H03L 7/087 (2013.01); H03L 7/089 (2013.01); H03L 7/093 (2013.01); H03L 7/0992 (2013.01); H03L 7/1976 (2013.01);
Abstract

A phase-frequency comparator compares a reference signal with an output signal from a variable frequency divider, and outputs an up signal of frequency and a down signal of frequency depending on results of the comparison. An AND circuit performs an AND operation between the up signal and the down signal, and outputs a result of the operation as a retiming si al CLKretime. A flip-flop circuit holds an output signal from a frequency control circuit at timing of the output signal from the AND circuit, and outputs the held output signal. At ΔΣ modulator determines a division ratio for the variable frequency divider on the basis of the output from the flip-flop circuit.


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