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:
Oct. 13, 2020

Filed:

Feb. 06, 2020
Applicant:

SK Hynix Inc., Icheon, KR;

Inventor:

Tae-Pyeong Kim, Icheon, KR;

Assignee:

SK hynix Inc., Icheon, KR;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03L 7/06 (2006.01); H03L 7/095 (2006.01); H03L 7/191 (2006.01);
U.S. Cl.
CPC ...
H03L 7/095 (2013.01); H03L 7/191 (2013.01);
Abstract

A locking detecting circuit of a Phase Locked Loop (PLL) circuit includes an output signal counter performing an output signal counting operation of counting an output signal of the PLL circuit during a counting time period, a period determiner performing a period changing operation of decreasing the counting time period until a difference between a current period counting value and a preceding period counting value becomes smaller than a threshold value, and a locking detector detecting a locking of the PLL circuit when the difference between the current period counting value and the preceding period counting value becomes smaller than the threshold value.


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