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:
Apr. 14, 2025
Filed:
Apr. 03, 2024
Seiko Epson Corporation, Tokyo, JP;
Masayoshi Todorokihara, Suwa, JP;
SEIKO EPSON CORPORATION, , JP;
Abstract
A vibration rectification error correction device includes a reference signal generation circuit that outputs a reference signal, a first frequency delta-sigma modulation circuit that performs frequency delta-sigma modulation on the reference signal by using a first measured signal to generate a first frequency delta-sigma modulated signal, a first filter, a second filter that operates in synchronization with the reference signal, and a first timing control circuit that controls a timing of outputting an input signal in synchronization with the first timing signal, in which the first filter and the first timing control circuit are provided on a signal path from an output of the first frequency delta-sigma modulation circuit to an input of the second filter.