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:
Sep. 17, 2024
Filed:
Sep. 08, 2022
Kabushiki Kaisha Toshiba, Tokyo, JP;
Tetsuro Itakura, Nerima Tokyo, JP;
Ryunosuke Gando, Yokohama Kanagawa, JP;
Daiki Ono, Yokohama Kanagawa, JP;
Kei Masunishi, Kawasaki Kanagawa, JP;
Akihide Sai, Yokohama Kanagawa, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A resonance frequency detector has an adder that adds a correction term to an oscillation frequency of an output signal of an oscillator, and detects a predetermined resonance frequency of a resonance element. The correction term is generated based on a phase error in a phase locked loop and a degree of change in phase at the resonance frequency, and the phase locked loop generates a control signal based on the phase error between an output signal of the resonance element that resonates at the resonance frequency and the output signal of the oscillator that varies the oscillation frequency according to the control signal.