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. 24, 2016
Filed:
Jun. 04, 2014
Applicant:
Onkyo Corporation, Osaka, JP;
Inventors:
Assignee:
Onkyo Corporation, Neyagawa-shi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M 3/00 (2006.01); G11B 20/10 (2006.01); H04R 3/00 (2006.01); G11B 20/00 (2006.01);
U.S. Cl.
CPC ...
H03M 3/30 (2013.01); G11B 20/10009 (2013.01); H03M 3/346 (2013.01); H03M 3/348 (2013.01); H04R 3/00 (2013.01); G11B 2020/00065 (2013.01); H03M 3/37 (2013.01);
Abstract
Provided is a modulation circuit that can correct an output state in real time and reliably modulate an input signal to output the modulated signal. The signal modulation circuit includes a subtracter, an integrator, a chopper circuit, a frequency divider, and a D-type flip-flop. A delay circuit of a sigma delta modulation circuit is not provided to a feedback circuit, and a signal is delayed and quantized in the D-type flip-flop. The chopper circuit inserts a zero level at timing synchronized with a clock signal, so that pulse density modulation is performed.