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, 2026
Filed:
Mar. 27, 2023
Yamaha Corporation, Hamamatsu, JP;
Shinya Mizoshiri, Hamamatsu, JP;
Masao Noro, Hamamatsu, JP;
Yamaha Corporation, Hamamatsu, JP;
Abstract
A class-D amplifier that amplifies an input signal comprises a control circuit configured to generate a control signal that varies in accordance with a level of the input signal, a first generating circuit configured to generate a first pulse, and a second generating circuit configured to generate a second pulse. A pulse width of the first pulse becomes narrower as the signal level of the input signal becomes smaller, and the pulse width of the first pulse becomes wider as an instantaneous magnitude of the input signal becomes larger. A pulse width of the second pulse becomes narrower as the signal level of the input signal becomes smaller, and the pulse width of the second pulse becomes wider as an instantaneous magnitude of the input signal becomes smaller.