Title:
ULTRASONIC SIGNAL COMMUNICATION APPARATUS, COMMUNICATION APPARATUS, COMMUNICATION APPARATUS FOR DIVERS, COMMUNICATION SYSTEM, AND COMMUNICATION METHOD
Document Type and Number:
Japanese Patent JP2010057187
Kind Code:
A
Abstract:
To simplify the configuration of an ultrasonic signal communication apparatus.
An ultrasonic signal communication apparatus 310A includes: an ultrasonic oscillation unit 318A having at least two resonance frequencies according to oscillation modes; a transmission unit 314A for generating a first ultrasonic signal at either of the two resonance frequencies and then for transmitting the generated first ultrasonic signal from the ultrasonic oscillation unit; and a receiving unit 314B for receiving a second ultrasonic signal transmitted at the rest of the two resonance frequencies from the ultrasonic oscillation unit.
Inventors:
IRIE MICHIO
Application Number:
JP2009218665A
Publication Date:
March 11, 2010
Filing Date:
September 24, 2009
Export Citation:
Assignee:
SEIKO EPSON CORP
International Classes:
H04B11/00; B63C11/26; H04R17/00
Attorney, Agent or Firm:
Masahiko Ueyanagi
Osamu Suzawa
Kazuhiko Miyasaka
Osamu Suzawa
Kazuhiko Miyasaka
Previous Patent: TERMINAL DEVICE, METHOD, AND PROGRAM
Next Patent: RADIO RELAY DEVICE AND RADIO RELAY METHOD
Next Patent: RADIO RELAY DEVICE AND RADIO RELAY METHOD