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:
Jul. 02, 2024
Filed:
Dec. 12, 2022
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventor:
Masayoshi Todorokihara, Suwa, JP;
Assignee:
SEIKO EPSON CORPORATION, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M 3/00 (2006.01); G01C 9/06 (2006.01); H03C 3/00 (2006.01); H03L 7/085 (2006.01);
U.S. Cl.
CPC ...
H03M 3/30 (2013.01); G01C 9/06 (2013.01); H03C 3/00 (2013.01); H03L 7/085 (2013.01); H03M 3/00 (2013.01); H03M 3/38 (2013.01);
Abstract
A frequency delta-sigma modulation signal output circuit includes: a phase modulation circuit configured to generate n delay signals obtained by delaying a measurement target signal, n being an integer of 2 or more, and generate a phase modulation signal by randomly selecting one of the n delay signals in synchronization with the measurement target signal; and a frequency ratio digital conversion circuit configured to generate a frequency delta-sigma modulation signal using a reference signal and the phase modulation signal.