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:
Jan. 06, 2026
Filed:
Mar. 08, 2024
Seiko Epson Corporation, Tokyo, JP;
Rika Tanimoto, Matsumoto, JP;
Noritaka Ide, Shiojiri, JP;
Kunio Tabata, Shiojiri, JP;
Dai Nozawa, Matsumoto, JP;
Satoru Uematsu, Shiojiri, JP;
SEIKO EPSON CORPORATION, , JP;
Abstract
A drive circuit includes a modulation circuit that outputs a modulation signal, an amplification circuit that outputs a first amplified modulation signal obtained by amplifying the modulation signal, a level switching signal generation circuit that generates a level switching signal, a level shift circuit that outputs the first amplified modulation signal, or outputs a signal obtained by shifting a potential of the first amplified modulation signal, and a demodulation circuit that demodulates a second amplified modulation signal output by the level shift circuit, and outputs the drive signal, a feedback circuit that outputs a feedback signal to the modulation circuit, and a stop time duration measurement circuit that outputs a stop time duration measurement signal in response to the modulation signal. The level switching signal generation circuit switches a potential of the level switching signal in response to the base drive signal and the stop time duration measurement signal.