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:
May. 02, 2006
Filed:
Oct. 23, 2003
Tsunehiko Hongoh, Higashihiroshima, JP;
Hirotoshi Yamamoto, Higashihiroshima, JP;
Tsunehiko Hongoh, Higashihiroshima, JP;
Hirotoshi Yamamoto, Higashihiroshima, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
An audio signal reproduction device of the invention has a seventh-order delta-sigma modulation circuit that receives a PCM signal and that performs delta-sigma modulation on the PCM signal, a PWM circuit that performs pulse width modulation on the signal outputted from the seventh-order delta-sigma modulation circuit to produce a one-bit digital signal, a switching amplifier that converts the one-bit digital signal into an analog signal and that then amplifies it, and a low-pass filter that eliminates high-frequency components of the analog signal. This configuration permits size and weight reduction.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile