Underwater communication device and underwater communication system

Abstract

An underwater communication device is provided and adapted to communicate data in water with another underwater communication device including another coil. The underwater communication device includes a first coil configured to transmit data to and from the other coil via a magnetic field, a second coil configured to transmit the data to and from the other coil via a magnetic field, and a supply unit configured to supply the data to at least one of the first coil and the second coil. A coil surface of the first coil and a coil surface of the second coil overlap each other.

1 . An underwater communication device that is adapted to communicate data in water with another underwater communication device including another coil, the underwater communication device comprising:
 a first coil configured to transmit data to and from the other coil via a magnetic field;   a second coil configured to transmit the data to and from the other coil via a magnetic field; and   a supply unit configured to supply the data to at least one of the first coil and the second coil,   wherein a coil surface of the first coil and a coil surface of the second coil overlap each other.   
     
     
         2 . The underwater communication device according to  claim 1   wherein a winding direction of the first coil and a winding direction of the second coil are opposite to each other.   
     
     
         3 . The underwater communication device according to  claim 1 ,
 wherein the data includes data generated in accordance with a communication method of power line communication.   
     
     
         4 . The underwater communication device according to  claim 1 ,
 wherein the data includes image data.   
     
     
         5 . The underwater communication device according to  claim 1 ,
 wherein the first coil and the second coil transmit the data in a direction substantially orthogonal to a water surface.   
     
     
         6 . An underwater communication device that is adapted to communicate data in water with another underwater communication device including another coil, the underwater communication device comprising:
 a first coil configured to transmit data to and from the other coil via a magnetic field;   a second coil configured to transmit the data to and from the other coil via a magnetic field; and   a supply unit configured to supply the data to at least one of the first coil and the second coil,   wherein a winding direction of the first coil and a winding direction of the second coil are opposite to each other.   
     
     
         7 . An underwater communication system that is adapted to communicate data in water with another underwater communication device including another coil, the underwater communication device comprising:
 a first coil configured to transmit data to and from the other coil via a magnetic field;   a second coil configured to transmit the data to and from the other coil via a magnetic field; and   a supply unit configured to supply the data to at least one of the first coil and the second coil,   wherein a coil surface of the first coil and a coil surface of the second coil overlap each other.