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:
Nov. 11, 2025
Filed:
Jul. 28, 2023
Seiko Epson Corporation, Tokyo, JP;
Takao Katayama, Matsumoto, JP;
Burton Alexander, Richmond, CA;
Fumihito Baisho, Kai, JP;
Tsutomu Nonaka, Hino, JP;
SEIKO EPSON CORPORATION, , JP;
Abstract
Provided is a semiconductor device including: a pulse-width modulation circuit configured to pulse-width modulate a signal based on a first pulse-code modulated signal that is a sound source signal, and output a first pulse-width modulated signal; a first conversion circuit configured to convert a second pulse-width modulated signal based on the first pulse-width modulated signal into a second pulse-code modulated signal; and a comparison circuit configured to convert the first pulse-code modulated signal into a first comparison target signal by an inversely convertible conversion method, convert the second pulse-code modulated signal into a second comparison target signal by the conversion method, and compare the first comparison target signal with the second comparison target signal.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile