Title:
MOBILE TERMINAL DEVICE
Document Type and Number:
Japanese Patent JP2012029094
Kind Code:
A
Abstract:
To perform a telephone call with a partner by using a parametric speaker not through a communication line.
A mobile terminal device 100 has a parametric speaker 10, a position detector 60, and a controller 6. The parametric speaker 10 generates an ultrasonic wave to form an acoustic field 2 where a sound is reproduced in a specific region by demodulation of the ultrasonic wave. The position detector 60 detects a position of a partner's mobile terminal device 100. The controller 6 controls directivity of the parametric speaker 10 so that the acoustic field 2 is formed in a region depending on the position detected by the position detector 60.
More Like This:
| WO/2022/019033 | ELECTRONIC DEVICE AND ELECTRO-ACOUSTIC TRANSDUCER |
| JP6274497 | Parametric speaker |
| JPS51141618 | SPEAKER PROTECTION CIRCUIT |
Inventors:
KISHINAMI YUICHIRO
ONISHI YASUHARU
KOMODA MOTOYOSHI
MURATA YUKIO
KURODA ATSUSHI
SATO SHIGEO
ONISHI YASUHARU
KOMODA MOTOYOSHI
MURATA YUKIO
KURODA ATSUSHI
SATO SHIGEO
Application Number:
JP2010166528A
Publication Date:
February 09, 2012
Filing Date:
July 23, 2010
Export Citation:
Assignee:
NEC CASIO MOBILE COMM LTD
International Classes:
H04R3/00; H04M1/00; H04R1/32; H04R17/00; H04R19/00
Domestic Patent References:
| JP2007282191A | 2007-10-25 | |||
| JP2009218950A | 2009-09-24 | |||
| JP2005286862A | 2005-10-13 | |||
| JP2007043585A | 2007-02-15 | |||
| JPS61253996A | 1986-11-11 |
Foreign References:
| WO2005076660A1 | 2005-08-18 | |||
| WO2005120355A1 | 2005-12-22 |
Attorney, Agent or Firm:
Shinji Hayami