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, 2011
Filed:
Feb. 17, 2009
Satoshi Iwaki, Iruma, JP;
Akira Nakayama, Hachioji, JP;
Tamotsu Machino, Tokorozawa, JP;
Ikuo Kitagishi, Hachioji, JP;
Yukihiro Nakamura, Higashiyamato, JP;
Satoshi Iwaki, Iruma, JP;
Akira Nakayama, Hachioji, JP;
Tamotsu Machino, Tokorozawa, JP;
Ikuo Kitagishi, Hachioji, JP;
Yukihiro Nakamura, Higashiyamato, JP;
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Abstract
The acoustic signal transmission method is based on generating a synthesized sound electrical signal by electrically synthesizing an audible sound signal and another signal different than the audible sound signal at the sending side, and transmitting the synthesized sound electrical signal, and extracting the another signal different than the audible sound signal from the synthesized sound electrical signal at the receiving side. Here, generation of the synthesized sound electrical signal is made by using a data hiding technique, for example. Accordingly, the acoustic signal represented by the synthesized sound electrical signal can be heard by human ears in the same way as the audible sound signal, and the synthesized another signal cannot be detected by human ears. Here, the synthesized sound electrical signal can be transmitted as a sound wave in air space, as electrical signal through a transmission line or as radio signals such as infrared and electromagnetic waves.