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:
Mar. 10, 2026
Filed:
Aug. 23, 2024
Murata Manufacturing Co., Ltd., Kyoto-fu, JP;
Yoshihiro Fujiwara, Nagaokakyo, JP;
Tatsuya Hosotani, Nagaokakyo, JP;
Murata Manufacturing Co., Ltd., Kyoto-fu, JP;
Abstract
A signal extension circuit is electrically connected between an MPU and a drive circuit and outputs a second drive signal generated by adjusting a phase of a first drive signal. A low-voltage malfunction prevention circuit is connected between the input end of the drive circuit and the output ends of the MPU and the signal extension circuit. The first drive signal is a three-state signal having one of first, second and third voltages in ascending order. The low-voltage malfunction prevention circuit includes a detection comparison circuit that detects an output voltage and determines whether the output voltage is less than or equal to a threshold value representing a voltage value that is less than a predetermined output voltage. When the output voltage is less than the threshold value, the low-voltage malfunction prevention circuit outputs the first drive signal as the second drive signal to the drive circuit.