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:
Nov. 01, 2016

Filed:

Nov. 12, 2014
Applicant:

Sony Semiconductor Solutions Corporation, Kanagawa, JP;

Inventor:

Yasunori Tsukuda, Kanagawa, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03L 7/197 (2006.01); H03M 3/00 (2006.01); H03K 21/02 (2006.01);
U.S. Cl.
CPC ...
H03M 3/30 (2013.01); H03K 21/02 (2013.01); H03K 21/023 (2013.01); H03L 7/197 (2013.01);
Abstract

The present technique relates to a clock generation circuit including a phase difference comparison circuit configured to compare a phase of each of an input clock signal and a feedback signal, and provides a phase difference signal indicating a phase difference between the input clock signal and the feedback signal, a filter circuit configured to suppress a high frequency component in the phase difference signal, an output circuit configured to modulate the phase difference signal in such a manner as to decrease a noise component of a low frequency band and increase a noise component of a high frequency band, and generate and output an output clock signal from the modulated phase difference signal and a reference clock signal, and a frequency dividing circuit configured to divide a frequency of the output clock signal, at a predetermined frequency dividing ratio, and feed it back to the phase comparison circuit.


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