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:
May. 11, 2021
Filed:
Nov. 07, 2019
Applicant:
SK Hynix Inc., Icheon-si, KR;
Inventors:
Da In Im, Icheon-si, KR;
Young Suk Seo, Seoul, KR;
Assignee:
SK hynix Inc., Icheon-si, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03L 7/081 (2006.01); H03L 7/085 (2006.01);
U.S. Cl.
CPC ...
H03L 7/0814 (2013.01); H03L 7/085 (2013.01);
Abstract
A phase detection circuit includes an edge trigger circuit and a duty detection circuit. The edge trigger circuit generates a reference pulse signal and a comparison pulse signal based on a target clock signal and at least two clock signals having phases adjacent to the phase of the target clock signal. The duty detection circuit generates a phase detection signal by detecting the duty ratio of the reference pulse signal and the comparison pulse signal.