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:
Aug. 10, 2021
Filed:
Jun. 20, 2018
Sharp Kabushiki Kaisha, Sakai, JP;
Tsuyoshi Nakahira, Kobe, JP;
Akihiro Nishigaki, Sakai, JP;
SHARP KABUSHIKI KAISHA, Sakai, JP;
Abstract
A digital amplifier that minimizes and restricts an analog signal system and uses a feedback signal and a dither signal is achieved. A pulse width modulator that adjusts a pulse width of a digital signal, a switching circuit that amplifies an output signal from the pulse width modulator, and a feedback signal generation unit that generates a feedback signal based on an output signal from the switching circuit are included, the pulse width modulator adjusts the pulse width of the digital signal with reference to the feedback signal, and the feedback signal generation unit includes a first amplifier that outputs a first amplified signal in which a difference between the output signal from the switching circuit and one of a reference voltage and a dither signal is amplified and a second amplifier that amplifies a difference between the first amplified signal and the other of the dither signal and the reference voltage and outputs the amplified difference as the feedback signal.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile