| Patents for H04B 13 - Transmission systems characterised by the medium used for transmission, not provided for in groups (1,959) |
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| 01/08/2014 | CN103501202A Wireless network communication system and method based on underwater target positioning tracking |
| 01/08/2014 | CN103501201A Frequency hopping pulse bit encoding underwater acoustic communication method based on linear frequency modulation signals |
| 01/03/2014 | WO2014001704A1 Method of authentication between a mobile terminal and a processing terminal |
| 01/01/2014 | EP2678958A1 Underwater connector arrangement |
| 01/01/2014 | CN203376867U Elastic wave carrier communication transmission device of oil extraction deep well |
| 01/01/2014 | CN103493558A Channel switching method in a medical body area network |
| 01/01/2014 | CN103491037A Underwater acoustic channel blind equalization method based on virtual receivers |
| 12/25/2013 | CN103475427A ALOHA protocol-based method and system for controlling underwater acoustic communication network |
| 12/25/2013 | CN103475426A Adaptive power control method and adaptive power control system applicable to underwater acoustic communication network |
| 12/19/2013 | US20130335232 Riser wireless communications system |
| 12/18/2013 | CN103457903A Digital underwater voice communication device and underwater voice communication method |
| 12/18/2013 | CN102263597B Method for sending information between underwater acoustic sensor network nodes |
| 12/12/2013 | US20130328691 Method and system for communication for underwater communications |
| 12/11/2013 | CN103442419A Short-distance point-to-point electromagnetic wave communication method based on self-adaption wave beam adjustment |
| 12/11/2013 | CN103441980A Sideband-information-free shallow sea underwater acoustic communication pattern selection peak-to-average ratio restraining algorithm based on frequency reversal mirror technology |
| 12/11/2013 | CN103441803A Underground low-frequency wireless communication system based on low-power small electric antenna |
| 12/10/2013 | US8606177 Apparatus and method for controlling human body contact of ground electrode, and human body communication system using the same |
| 12/05/2013 | WO2013179883A1 Electronic apparatus and garment |
| 12/04/2013 | CN103427913A Liftable communication relay system and method |
| 12/04/2013 | CN102223329B Fraction Lower Order Statistics Based Orthogonal blind Wavelet balanced method |
| 11/27/2013 | CN102204134B Wideband communication for body-coupled communication systems |
| 11/27/2013 | CN102164008B Control channel-free underwater dynamic spectrum access method |
| 11/20/2013 | CN103401619A Underwater acoustic communication method based on virtual time reversal mirror M element bionic signal coding |
| 11/20/2013 | CN103401618A UWSN transmission method and system |
| 11/20/2013 | CN103401582A Two-dimensional underwater sound frequency hopping method based on channel matching |
| 11/20/2013 | CN103400574A Transmit-receive sharing broadband inlaying annular transducer and preparation method thereof |
| 11/20/2013 | CN102201873B Distributed dynamic time division multiple address protocol method for underwater acoustic communication network |
| 11/20/2013 | CN101272188B Fast self-optimization self-adaptive signal processing method and device of coherent communication technology |
| 11/19/2013 | CA2577582C High impact communication and control system |
| 11/13/2013 | CN103391171A Improved selective mapping judgment peak-to-average-power-ratio suppression method based on decision feedback |
| 11/12/2013 | US8583027 Methods and systems for authorizing computing devices for receipt of venue-based data based on the location of a user |
| 11/06/2013 | CN103384963A Waveguide device, communication module, and electronic device |
| 11/05/2013 | US8577288 Subsea transfer system providing wireless data transfer, electrical power transfer and navigation |
| 10/31/2013 | US20130288596 Underwater Communication Device |
| 10/30/2013 | CN203261360U Sonar modulation and demodulation device applied in underwater |
| 10/30/2013 | CN102316795B Body-associated receiver and method |
| 10/30/2013 | CN102315883B Encoding underwater sound communication method of Pattern delay inequality based on non-fixed code element width |
| 10/30/2013 | CN102088659B Underwater life search and rescue system based on wireless sensor network |
| 10/29/2013 | US8570185 Wireless underwater hull inspection system |
| 10/24/2013 | US20130279299 Underwater Navigation |
| 10/24/2013 | US20130279298 Monitoring of underwater mooring lines |
| 10/23/2013 | CN103368660A Differential pattern time delay shift coding-based bionic underwater sound communication method |
| 10/22/2013 | US8565900 Low power signal transmission |
| 10/22/2013 | CA2747156C Body-associated receiver and method |
| 10/17/2013 | US20130272098 Underwater Acoustic Array, Communication and Location System |
| 10/16/2013 | CN203243334U Underwater ultrasonic communication device |
| 10/15/2013 | CA2531036C Through-the-earth radio |
| 10/10/2013 | WO2013151103A1 Transmission apparatus, reception apparatus, reception system and reception program |
| 10/09/2013 | EP2647139A1 Multi-wavelength locating method and device for use in an aquatic medium |
| 10/09/2013 | CN102420791B Bit zone difference pulse position modulation method and device |
| 10/09/2013 | CN101997616B Vector array MIMO-based high-speed underwater sound communication method |
| 10/09/2013 | CN101356751B Data communication device, receiver and data transmission method |
| 10/03/2013 | WO2013145041A1 Electromagnetic wave propagation sheet and two-dimensional communication system |
| 10/02/2013 | CN103338169A Self-adapting minimum entropy blind equalization method for optimizing one-dimensional harmonic oscillator quantum artificial fish-swarm |
| 10/02/2013 | CN103338079A Underwater wireless acousto-optic communication device and method |
| 09/25/2013 | CN102122993B Method and device of remote underwater acoustic communication |
| 09/25/2013 | CN101663846B Communication device, receiver and transmitter |
| 09/19/2013 | WO2013136119A1 Body-coupled communication based on user device with touch display |
| 09/19/2013 | US20130242703 Footwear seismic communication system |
| 09/18/2013 | EP2637554A1 System and method for exchanging duty-cycle information in wireless networks |
| 09/18/2013 | CN103312697A Underwater sensor network MAC (media access control) protocol implementation method based on time-space fairness |
| 09/18/2013 | CN103312421A Safe refuging wireless ground penetrating communication system for mine |
| 09/18/2013 | CN103312420A Magnetic conductance through-the-earth communication device and method |
| 09/17/2013 | US8537027 Method for controlling an electronic device and electronic device |
| 09/11/2013 | EP2635487A1 Anchor Data Communication System |
| 09/04/2013 | CN103283162A Portable through-the-earth radio |
| 09/04/2013 | CN102017474B Method for selecting adaptive frequency baseband of walsh codes, adaptive frequency-selective spreader using the same and transmitting and receiving apparatus using the adaptive frequency-selective spreader |
| 09/04/2013 | CN101834675B Method for carrying out sound communication on underground and ground during underground rescue |
| 09/04/2013 | CN101816136B Method and apparatus for communicating sound wave of human body |
| 08/29/2013 | US20130225069 Anchor Data Communication System |
| 08/28/2013 | CN203166901U Low-frequency wireless bidirectional through-the-ground communication apparatus |
| 08/20/2013 | US8515344 Diver communication system |
| 08/20/2013 | US8515343 Water based vehicle communications system |
| 08/15/2013 | WO2013119433A1 Semi-autonomous underwater vehicle |
| 08/15/2013 | US20130208768 Underwater acoustic multiple-input/multiple-output (mimo) communication systems and methods |
| 08/14/2013 | CN103249640A 锚定数据通信系统 Anchor data communication system |
| 08/14/2013 | CN103248436A Method for avoiding hidden terminal and exposed terminal of underwater acoustic communication network |
| 08/14/2013 | CN103248435A Underwater acoustic communication network time division multiple address (TDMA) method |
| 08/14/2013 | CN101818641B Method and apparatus for data communication with underground instrument package |
| 08/08/2013 | US20130202285 System and method for transporting electric power and providing optical fiber communications under sea water |
| 08/01/2013 | WO2013112080A1 Handling of signals transmitted through a human body |
| 08/01/2013 | WO2013110619A1 Communication in a subsea well control system |
| 08/01/2013 | US20130196593 Portable through-the-earth radio |
| 08/01/2013 | US20130195465 Underwater communication system |
| 07/31/2013 | EP2621113A1 Communicaton in a subsea well control system |
| 07/31/2013 | EP2619931A1 Pipeline system and method for operating a pipeline system |
| 07/25/2013 | US20130187787 Systems and methods for transmitting data from an underwater station |
| 07/24/2013 | CN203086480U Acoustic remote monitoring apparatus of erosion and corrosion of submarine pipeline |
| 07/24/2013 | CN103220047A Low-frequency through-the-earth communication system and low-frequency through-earth communication method based on superconducting quantum interference device (SQUID) array |
| 07/24/2013 | CN103220046A Remote underwater sound communication method |
| 07/24/2013 | CN103220010A Low-frequent wireless bidirectional ground penetrating communication device and method thereof |
| 07/24/2013 | CN101064570B Electric signal transmission method and its apparatus |
| 07/18/2013 | WO2013105168A1 Interface device |
| 07/18/2013 | WO2013104893A1 Transducer arrangement |
| 07/17/2013 | CN103210596A 通信介质 Communication medium |
| 07/17/2013 | CN103207717A Touch screen terminal and communication system and method based on human body electric field conduction |
| 07/17/2013 | CN102158290B Underwater acoustic data transmission device |
| 07/11/2013 | WO2013103963A1 Automated electronic device network pairing based on electric field coupling |
| 07/11/2013 | WO2013102284A1 Nitrogen ring-network cabinet |
| 07/10/2013 | CN101388731B Low rate equivalent speech water sound communication technique |