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:
Jan. 27, 2015
Filed:
Aug. 07, 2009
Hitoshi Akiyama, Hamamatsu, JP;
Shinya Koseki, Fukuroi, JP;
Fukutaro Okuyama, Hamamatsu, JP;
Takuro Sone, Hamamatsu, JP;
Hiroyuki Iwase, Hamamatsu, JP;
Hitoshi Akiyama, Hamamatsu, JP;
Shinya Koseki, Fukuroi, JP;
Fukutaro Okuyama, Hamamatsu, JP;
Takuro Sone, Hamamatsu, JP;
Hiroyuki Iwase, Hamamatsu, JP;
Yamaha Corporation, , JP;
Abstract
A modulation device includes: a spread code generation unit which generates a spread code having a predetermined cycle; an audio signal input unit to which an audio signal is input; a first modulation unit which phase-modulates the spread code in each cycle on the basis of a data code; and a combining unit which combines the audio signal with a modulation signal which has been generated on the basis of the phase-modulated spread code and distributed in a frequency range higher than a predetermined frequency to output a combined signal.