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:
Jun. 11, 2019
Filed:
Mar. 01, 2017
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventor:
Koichi Hatanaka, Matsumoto, JP;
Assignee:
SEIKO EPSON CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K 3/00 (2006.01); H03K 3/03 (2006.01); H03L 1/02 (2006.01); H03L 1/04 (2006.01); H03K 3/011 (2006.01); H03L 7/093 (2006.01); H03L 7/099 (2006.01);
U.S. Cl.
CPC ...
H03K 3/0315 (2013.01); H03K 3/00 (2013.01); H03K 3/011 (2013.01); H03L 1/028 (2013.01); H03L 1/04 (2013.01); H03L 7/093 (2013.01); H03L 7/0995 (2013.01);
Abstract
A ring oscillator circuit includes a plurality of first delay circuits each including X first delay elements, and a second delay circuit including a plurality of second delay elements different in delay amount from each other arranged in parallel to each other so as to be alternatively loaded, the plurality of first delay circuits and the second delay circuit are configured to be connected to each other in a ring-like manner, and X is an integer fulfilling X≥1.