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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.:

US 11411512 B1

PDFFull Text
Date of Patent:
Aug. 09, 2022

Filed:

Sep. 28, 2018

Control device and method for controlling a piezoelectric drive device using phase difference

Applicant:

Seiko Epson Corporation, Tokyo, JP;

Inventor:

Kiichi Kajino, Matsumoto, JP;

Assignee:

Seiko Epson Corporation;

Attorney:

Harness, Dickey & Pierce, P.L.C.

Primary Examiner:

Emily P Pham

Int. Cl.
CPC ...
H02N 2/14 (2006.01); H02N 2/10 (2006.01); H01L 41/04 (2006.01); H01L 41/08 (2006.01); G02B 7/04 (2021.01); B41J 2/045 (2006.01); H01L 21/677 (2006.01); G03B 21/53 (2006.01); G03B 21/14 (2006.01); G03B 21/20 (2006.01); G03B 21/00 (2006.01);
U.S. Cl.
CPC ...
H02N 2/147 (2013.01); B41J 2/04541 (2013.01); B41J 2/04581 (2013.01); G02B 7/04 (2013.01); G03B 21/142 (2013.01); G03B 21/53 (2013.01); H01L 21/67706 (2013.01); H01L 41/042 (2013.01); H01L 41/0825 (2013.01); H02N 2/103 (2013.01); H02N 2/142 (2013.01); G03B 21/006 (2013.01); G03B 21/2066 (2013.01);
Abstract

A control device of a piezoelectric drive device includes a drive pulse signal generation unit that generates a binary drive pulse signal, a drive signal generation unit that generates a drive signal which is applied to the piezoelectric element for drive from the drive pulse signal, a detection pulse signal generation unit that generates a detection pulse signal by binarizing the detection signal which is output from the piezoelectric element for detection, and a phase difference acquisition unit that acquires a phase difference between the drive pulse signal and the detection pulse signal, based on a rising edge and a falling edge of the drive pulse signal and a rising edge and a falling edge of the detection pulse signal.

Find Patent Forward Citations

Kajino, Kiichi. (2022). Control device and method for controlling a piezoelectric drive device using phase difference (U.S. Patent No. 11411512). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11411512

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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