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. 08, 2022

Filed:

Oct. 04, 2021
Applicant:

SK Hynix Inc., Icheon-si Gyeonggi-do, KR;

Inventors:

Gyu Tae Park, Icheon-si Gyeonggi-do, KR;

Young Ouk Kim, Icheon-si Gyeonggi-do, KR;

Assignee:

SK hynix Inc., Icheon-si, KR;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03L 7/081 (2006.01); G06F 1/10 (2006.01); G06F 1/08 (2006.01); G06F 1/06 (2006.01);
U.S. Cl.
CPC ...
H03L 7/0814 (2013.01); G06F 1/06 (2013.01); G06F 1/08 (2013.01); G06F 1/10 (2013.01); H03L 7/0816 (2013.01); H03L 7/0818 (2013.01);
Abstract

A clock generating circuit includes a first delay line, a second delay line, a selected phase mixing circuit and, a delay control circuit. The first delay line delays, based on a delay control signal, an input clock signal to generate a first delay clock signal. The second delay line delays, based on the delay control signal, the input clock signal to generate a second delay clock signal. The selected phase mixing circuit generates, based on a first selection signal and a second selection signal, an output clock signal from at least one between the first delay clock signal and the second delay clock signal. The delay control circuit monitors duty cycles of the first delay clock signal and the second delay clock signal to generate the first selection signal and the second selection signal thereby selecting at least one between the first delay line and the second delay line.


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