Abstract: The present invention relates to an interphone device for use in ships, the interphone device comprising: an input/output unit to which a voice is input or from which a voice is output; a transmission/reception circuit unit which receives the voice from the input/output unit and provides a first signal obtained by encoding and modulating the received voice; and an antenna which is attached to the metal hull of the ship, forms an electromagnetic field in the metal hull, and carries the first signal received from the transmission/reception circuit unit by the electromagnetic field, so as to propagate the first signal.
Type:
Grant
Filed:
August 14, 2017
Date of Patent:
June 14, 2022
Assignees:
ZN TECHNOLOGIES CO., LTD., UNIST(ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY), ZN OCEAN CO., LTD.
Inventors:
Chang Soo Kang, Na Young Kim, Eun Gyu Bae, Mi Young Kim, Chul Gyun Park, Franklin Don Bien