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UNDERWATER COMMUNICATION DEVICE AND UNDERWATER COMMUNICATION METHOD

外国特許コード F200010043
整理番号 439-PCT
掲載日 2020年4月13日
出願国 世界知的所有権機関(WIPO)
国際出願番号 2019JP034265
国際公開番号 WO 2020050183
国際出願日 令和元年8月30日(2019.8.30)
国際公開日 令和2年3月12日(2020.3.12)
優先権データ
  • 特願2018-165527 (2018.9.4) JP
発明の名称 (英語) UNDERWATER COMMUNICATION DEVICE AND UNDERWATER COMMUNICATION METHOD
発明の概要(英語) Provided are an underwater communication device and an underwater communication method that can be applied to underwater mobile communication. The underwater communication device 10 is provided with a transmitter 12 which emits an electric signal, and a receiver 14 which is disposed away from the transmitter 12 with water therebetween, and receives the electric signal. The receiver 14 comprises a field-effect transistor 23 with a channel region 39 disposed in a position in contact with the water, and a drive circuit 26 which produces a potential difference between a source region 31 and a drain region 33 of the field-effect transistor 23.
従来技術、競合技術の概要(英語) BACKGROUND ART
In the ocean water in the wireless communication of the mobile bodies, sound waves or electromagnetic waves and the like have been used in a variety of communication media. For example, an acoustic wave, the signal attenuation is reduced, the transmission distance is longer, the transmission capacity is small, a relatively low transmission speed. An electromagnetic wave, the attenuation factor is very high and thus it is not practical.
On the other hand, the wireless communication system using light, light absorption is smaller in the seawater, suitable communication media. As a light source, laser is used as the water has been proposed for wireless communication (for example, Patent Document 1).
  • 出願人(英語)
  • ※2012年7月以前掲載分については米国以外のすべての指定国
  • WASEDA UNIVERSITY
  • 発明者(英語)
  • KAWARADA HIROSHI
  • IYAMA YUTARO
  • KAJIYA MIKI
  • TADENUMA KAITO
  • SHINTANI YUKIHIRO
国際特許分類(IPC)
指定国 National States: AE AG AL AM AO AT AU AZ BA BB BG BH BN BR BW BY BZ CA CH CL CN CO CR CU CZ DE DJ DK DM DO DZ EC EE EG ES FI GB GD GE GH GM GT HN HR HU ID IL IN IR IS JO JP KE KG KH KN KP KR KW KZ LA LC LK LR LS LU LY MA MD ME MG MK MN MW MX MY MZ NA NG NI NO NZ OM PA PE PG PH PL PT QA RO RS RU RW SA SC SD SE SG SK SL SM ST SV SY TH TJ TM TN TR TT TZ UA UG US UZ VC VN ZA ZM ZW
ARIPO: BW GH GM KE LR LS MW MZ NA RW SD SL SZ TZ UG ZM ZW
EAPO: AM AZ BY KG KZ RU TJ TM
EPO: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
OAPI: BF BJ CF CG CI CM GA GN GQ GW KM ML MR NE SN ST TD TG
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