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JPS57107643A - Underwater communication equipment - Google Patents

Underwater communication equipment

Info

Publication number
JPS57107643A
JPS57107643A JP18362180A JP18362180A JPS57107643A JP S57107643 A JPS57107643 A JP S57107643A JP 18362180 A JP18362180 A JP 18362180A JP 18362180 A JP18362180 A JP 18362180A JP S57107643 A JPS57107643 A JP S57107643A
Authority
JP
Japan
Prior art keywords
relay device
diver
communication
land
person
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP18362180A
Other languages
Japanese (ja)
Inventor
Mitsuru Watabe
Kazuo Kaneko
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Global Life Solutions Inc
Original Assignee
Hitachi Heating Appliances Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Heating Appliances Co Ltd filed Critical Hitachi Heating Appliances Co Ltd
Priority to JP18362180A priority Critical patent/JPS57107643A/en
Publication of JPS57107643A publication Critical patent/JPS57107643A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B11/00—Transmission systems employing sonic, ultrasonic or infrasonic waves

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Near-Field Transmission Systems (AREA)

Abstract

PURPOSE:To avoid distance limit for a diver, by the communication of ultrasonic waves between the diver and a relay device and electromagnetic waves between the relay device and a person on land through the provision of the relay device on water. CONSTITUTION:A diver 4 can communicate with a transceiver of a relay device 1 with an ultrasonic wave transceiver 5. The relay device 1 receives this communication and it is propagated in electromagnetic waves from an antenna 3. A person on land 7 can receive the electromagnetic waves with a transceiver 8 and can know the contents of communication. As to the communication from the person on land to the diver 4, it is done by the reverse path.
JP18362180A 1980-12-24 1980-12-24 Underwater communication equipment Pending JPS57107643A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18362180A JPS57107643A (en) 1980-12-24 1980-12-24 Underwater communication equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18362180A JPS57107643A (en) 1980-12-24 1980-12-24 Underwater communication equipment

Publications (1)

Publication Number Publication Date
JPS57107643A true JPS57107643A (en) 1982-07-05

Family

ID=16138974

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18362180A Pending JPS57107643A (en) 1980-12-24 1980-12-24 Underwater communication equipment

Country Status (1)

Country Link
JP (1) JPS57107643A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63269635A (en) * 1987-04-27 1988-11-07 Koonan Eng Kk Underwater communication system
US6680876B2 (en) * 2000-08-10 2004-01-20 Mitsubishi Heavy Industries, Ltd. Natator in water tank, controlling apparatus and position measuring apparatus thereon

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63269635A (en) * 1987-04-27 1988-11-07 Koonan Eng Kk Underwater communication system
US6680876B2 (en) * 2000-08-10 2004-01-20 Mitsubishi Heavy Industries, Ltd. Natator in water tank, controlling apparatus and position measuring apparatus thereon

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