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:
Nov. 19, 2019
Filed:
Apr. 05, 2018
Applicant:
SK Hynix Inc., Gyeonggi-do, KR;
Inventor:
Seung Wan Chai, Seoul, KR;
Assignee:
SK hynix Inc., Gyeonggi-do, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C 16/32 (2006.01); H03K 3/03 (2006.01); H03K 5/134 (2014.01); H03K 3/017 (2006.01); G11C 7/22 (2006.01); H03K 3/356 (2006.01); H03K 5/156 (2006.01); H03K 19/0185 (2006.01); H03K 5/05 (2006.01); G11C 16/04 (2006.01); H03K 5/00 (2006.01);
U.S. Cl.
CPC ...
G11C 16/32 (2013.01); G11C 7/222 (2013.01); H03K 3/017 (2013.01); H03K 3/0315 (2013.01); H03K 3/0322 (2013.01); H03K 3/35613 (2013.01); H03K 3/356182 (2013.01); H03K 5/134 (2014.07); H03K 5/1565 (2013.01); H03K 19/018528 (2013.01); H03K 19/018585 (2013.01); G11C 16/0483 (2013.01); H03K 5/05 (2013.01); H03K 2005/00195 (2013.01);
Abstract
A ring oscillator includes first to fourth current-controlled delay circuits configured to allow a delay time to be changed depending on a magnitude of sink current, wherein the first to fourth current-controlled delay circuits are arranged symmetrically to each other about a square.