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:
Jun. 27, 2017
Filed:
Oct. 21, 2015
Applicant:
Trigence Semiconductor Inc., Tokyo, JP;
Inventors:
Jun-ichi Okamura, Tokyo, JP;
Akira Yasuda, Tokyo, JP;
Assignee:
Trigence Semiconductor Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F 3/00 (2006.01); H04R 3/00 (2006.01); H04R 1/00 (2006.01); H04R 3/12 (2006.01); H03F 3/21 (2006.01); H03F 3/217 (2006.01); H04R 1/10 (2006.01); H04R 15/00 (2006.01); H04R 27/00 (2006.01);
U.S. Cl.
CPC ...
H04R 3/00 (2013.01); H03F 3/211 (2013.01); H03F 3/217 (2013.01); H04R 1/005 (2013.01); H04R 3/12 (2013.01); H04R 1/1008 (2013.01); H04R 15/00 (2013.01); H04R 27/00 (2013.01); H04R 2227/003 (2013.01); H04R 2499/13 (2013.01); H04R 2499/15 (2013.01);
Abstract
A digital sound system suitable for a digital speaker device to directly convert analog sound by a circuit using a ΔΣ modulator and a mismatch shaping filter circuit to output a plurality of digital signals and a plurality of speakers driven by the plurality of digital signals. A digital speaker driving device includes a ΔΣ modulator, a post filter, s driving circuits, and a power supply circuit to supply power to the ΔΣ modulator, the post filter and the s driving elements, and the s driving circuits are adapted to s digital signal terminals.