COMMUNICATION DEVICE, AND COMMUNICATION METHOD

Title:

COMMUNICATION DEVICE, AND COMMUNICATION METHOD

Document Type and Number:

Japanese Patent JP2011023923

Kind Code:

A

Abstract:

To downsize a communication device, and to reduce power consumption.

This communication device 10A communicating with another communication device using an ultrasonic wave as a transmission medium under water includes: a piezoelectric element part 15A which detects or generates an ultrasonic wave by one resonant frequency; a communication part 20A which transmits/receives information using the ultrasonic wave; a storage part 40A which stores a time slot 100A to which a communication command to designate communication with the other communication device is allocated in time series, the time slot being shared by the other communication device; and a control part 35A which shifts the communication part 20A to one of a transmitting state, a receiving state, and a standby state that is neither the transmitting nor the receiving state, synchronously with the other communication device on the basis of the communication command at the time slot 100A.

Inventors:

KOYAMA SHUNSUKE

Application Number:

JP2009166435A

Publication Date:

February 03, 2011

Filing Date:

July 15, 2009

Export Citation:

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Assignee:

SEIKO EPSON CORP

International Classes:

H04B11/00; B63C11/26; H04J3/00; H04L5/16; H04L5/22; H04W92/18

Domestic Patent References:

JP2009501343A	2009-01-15
JPH043533A	1992-01-08

Attorney, Agent or Firm:

Masahiko Ueyanagi
Osamu Suzawa
Kazuhiko Miyasaka

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