公开(公告)号：US20210006339A1

公开(公告)日：2021-01-07

申请号：US16754654

申请日：2019-01-29

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Kazuhiro EGUCHI ,  Souichi KAWATA ,  Katsuya OKAMOTO ,  Yoshio KOYANAGI

IPC: H04B13/02 ,  H02J50/12 ,  H02J50/40 ,  H04B5/00 ,  H04B5/02

Abstract: A underwater communication device communicates data with another underwater communication device having another first coil and another second coil in water. The underwater communication device includes a first coil configured to transmit the data to and from the other first coil via a magnetic field, a second coil configured to transmit the data to and from the other second coil via a magnetic field, a supply unit configured to supply the data to the first coil and the second coil, a first capacitor connected to the first coil and forming a first resonance circuit that resonates with the first coil at a first resonance frequency, and a second capacitor connected to the second coil and forming a second resonance circuit that resonates with the second coil at a second resonance frequency that is different from the first resonance frequency.

公开(公告)号：US20210305846A1

公开(公告)日：2021-09-30

申请号：US17264203

申请日：2019-06-07

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Ryosuke HASABA ,  Kazuhiro EGUCHI ,  Yoshio KOYANAGI ,  Katsuya OKAMOTO ,  Souichi KAWATA ,  Tatsuo YAGI

IPC: H02J50/12 ,  H01F27/28 ,  H01F27/24

Abstract: A power receiving device is disposed underwater. The power receiving device includes a housing formed of a weak magnetic material, a ferromagnetic body that surrounds an outer side of the housing and is formed of a ferromagnetic material, and a power receiving coil wound around an outer side of the ferromagnetic body.

公开(公告)号：US20210281328A1

公开(公告)日：2021-09-09

申请号：US17194677

申请日：2021-03-08

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Kazuhiro EGUCHI ,  Souichi KAWATA ,  Katsuya OKAMOTO ,  Yoshio KOYANAGI

IPC: H04B13/02 ,  H02J50/12 ,  H02J50/40 ,  H04B5/00 ,  H04B5/02

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.