Title:
無線中継装置
Document Type and Number:
Japanese Patent JP4829810
Kind Code:
B2
Abstract:
To broaden the communicable range of a diver who uses an ultrasonic underwater communication machine.
This radio repeater 40 (40A and 40B) for relaying the wireless radio wave communication machine 10 and the ultrasonic underwater communication machine 20 or relaying ultrasonic underwater communication machines 20A and 20B at remote places has a wireless radio wave transmitting and receiving part 100, an ultrasonic transmitting and receiving part 200, and a transmission and reception switching relay circuit 300.
COPYRIGHT: (C)2008,JPO&INPIT
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Inventors:
Tomohiko Terada
Kazushige Suzuki
Hideya Suzuki
Kazushige Suzuki
Hideya Suzuki
Application Number:
JP2007034012A
Publication Date:
December 07, 2011
Filing Date:
February 14, 2007
Export Citation:
Assignee:
Fuji Industry Co., Ltd.
International Classes:
H04B11/00; B63C11/26; H04B7/15; H04W16/26
Domestic Patent References:
| JP63269635A | ||||
| JP2141134A |
Foreign References:
| CA2596397A1 |
Attorney, Agent or Firm:
Takao Koshikawa