| Patents for H04B 11 - Transmission systems employing ultrasonic, sonic or infrasonic waves (1,545) |
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| 04/19/2012 | WO2012027644A3 Techniques for acoustic management of entertainment devices and systems |
| 04/17/2012 | US8159903 Underwater communication system |
| 04/05/2012 | WO2012043305A1 Communication terminal, wireless device, provider server, and wireless communication system |
| 03/20/2012 | US8139443 Underwater sound projector system and method of producing same |
| 03/20/2012 | US8139442 Robust underwater communication system |
| 03/14/2012 | CN102378918A Acoustic position-determination system |
| 03/13/2012 | US8134890 Underwater communications |
| 03/01/2012 | WO2012027644A2 Techniques for acoustic management of entertainment devices and systems |
| 03/01/2012 | US20120051556 Parametric Audio System |
| 03/01/2012 | US20120051186 Valve condition monitoring |
| 02/23/2012 | WO2011156322A3 Underwater acoustic multiple-input/multiple-output (mimo) communication systems and methods |
| 02/15/2012 | CN102355308A Information transmission method, receiving method and terminal equipment |
| 02/08/2012 | CN102347804A Mobile terminal ultrasonic communication system and method |
| 02/01/2012 | EP2412173A1 Hearing instrument and method for providing hearing assistance |
| 01/31/2012 | US8106745 Remote control signaling using audio watermarks |
| 01/31/2012 | US8106744 Remote control signaling using audio watermarks |
| 01/24/2012 | US8102733 Communicating using sonar signals at multiple frequencies |
| 01/18/2012 | CN102324985A Delay method, delay, time difference, delay array and time difference array generator |
| 01/17/2012 | US8099048 Wireless communication system using surface acoustic wave (SAW) second harmonic techniques |
| 01/17/2012 | US8098545 Underwater vehicle guidance |
| 01/11/2012 | EP1145208B1 Method and device for transmitting control and/or sensor signals |
| 01/10/2012 | US8094518 Inter-diver signaling device and process |
| 01/05/2012 | WO2011137375A3 Ultrasonic communication systems for communication through rf-impervious enclosures and abutted structures |
| 12/28/2011 | CN102299747A 基于声波的安全数据通讯的装置系统与方法 Sonic the security device system and method based on data communications |
| 12/22/2011 | WO2011133522A3 High data rate acoustic multiple-input/multiple-output (mimo) communication apparatus and system for submersibles |
| 12/22/2011 | WO2011133478A3 System and method for data transmission via acoustic channels |
| 12/21/2011 | CN1750716B 超声波扬声器、声学系统以及超声波换能器的控制方法 Control method ultrasonic speaker, the acoustic system and an ultrasound transducer |
| 12/15/2011 | WO2011156322A2 Underwater acoustic multiple-input/multiple-output (mimo) communication systems and methods |
| 12/13/2011 | US8078136 Physical presence digital authentication system |
| 12/13/2011 | US8077548 Multibeam sounder |
| 12/08/2011 | US20110299364 Diver Communication System |
| 12/08/2011 | US20110299363 Communications system |
| 12/08/2011 | US20110299362 Underwater camera communication system |
| 12/07/2011 | CN1972525B 超定向扬声器系统及其信号处理方法 Ultra-directional speaker system and signal processing method |
| 12/07/2011 | CN102273106A 使用声学信号进行无线通信的方法和装置 Method and apparatus for performing wireless communication using the acoustic signal |
| 11/30/2011 | EP2389598A2 Acoustic position-determination system |
| 11/24/2011 | US20110285510 Implementation of On-Off Passive Wireless Surface Acoustic Wave Sensor Using Coding and Switching Techniques |
| 11/23/2011 | CN101827064B Modulation device, modulation method, demodulation device, and demodulation method |
| 11/15/2011 | US8059485 Communication system, information collecting method and base station apparatus |
| 11/10/2011 | US20110273965 Device and method for transmitting information in solid media |
| 11/09/2011 | CN101247183B Transmission device, receiving device, system and method for implementing communication based on ultrasonic wave |
| 11/08/2011 | US8055226 Frequency response correction for a receiver having a frequency translation device |
| 11/08/2011 | US8054986 Method and apparatus for computer communication using audio signals |
| 11/03/2011 | WO2011137375A2 Ultrasonic communication systems for communication through rf-impervious enclosures and abutted structures |
| 11/01/2011 | US8050142 Sound collection environment deciding device, sound processing device, electronic appliance, sound collection environment deciding method and sound processing method |
| 10/27/2011 | WO2011133522A2 High data rate acoustic multiple-input/multiple-output (mimo) communication apparatus and system for submersibles |
| 10/27/2011 | WO2011133478A2 System and method for data transmission via acoustic channels |
| 10/27/2011 | WO2011131134A1 Communication system and method for detecting underground person information with mechanical wave |
| 10/26/2011 | CN202019386U Ultrasonic positioning system for mobile phone |
| 10/26/2011 | CN202019360U Ultrasonic energy transmission system |
| 10/20/2011 | WO2011127618A1 Method and device for identifying objects and triggering interactions by means of close-range coupling of acoustically modulated data signals |
| 10/19/2011 | EP1915656B1 Automation network field device using ultrasound communication link |
| 10/06/2011 | WO2011121115A1 Method of wireless communication between several senders and at least one receiver |
| 10/05/2011 | EP2370799A1 Voice-estimation interface and communication system |
| 09/29/2011 | WO2011118018A1 Sending device |
| 09/29/2011 | WO2011118017A1 Sending device |
| 09/29/2011 | US20110235466 Ultrasound detectors |
| 09/27/2011 | US8027488 Parametric audio system |
| 09/14/2011 | CN102184729A Ultrasonic energy transmission system |
| 09/08/2011 | US20110216626 Digital hydrophone |
| 09/07/2011 | EP2362986A2 Method and apparatus for wireless communication using an acoustic signal |
| 09/07/2011 | CN201966922U 一种超声波载波信息通讯系统 An ultrasonic carrier information and communication systems |
| 08/31/2011 | CN101378293B Method and apparatus for measuring network node of underwater sensor |
| 08/30/2011 | US8009517 Wireless communication system, transmitting device, receiving device and information processing apparatus |
| 08/24/2011 | CN102165791A Dual-mode loudspeaker |
| 07/27/2011 | CN102136872A Ultrasonic carrier information communication system |
| 07/20/2011 | EP2345182A1 Method for wireless transmission between two electroacoustic transducers, and device for carrying out said method |
| 07/14/2011 | US20110170375 Marine siren seismic source |
| 07/07/2011 | WO2011034389A3 Communication system using ultrasonic waves |
| 07/06/2011 | EP2341644A1 Underwater communications system |
| 07/06/2011 | EP1756983B1 Method for detecting targets |
| 06/16/2011 | US20110143677 Method for transmitting object between devices having multi-radio interface |
| 06/16/2011 | US20110141853 Underwater acoustic navigation systems and methods |
| 06/15/2011 | EP2332344A1 Dual-mode loudspeaker |
| 06/14/2011 | CA2423661C Method and apparatus for transmitting information to the surface from a drill string down hole in a well |
| 06/09/2011 | US20110134725 Ultrasonic system and communication method thereof |
| 06/08/2011 | CN201860334U Underwater ultrasonic receiver based on automatic gain control |
| 06/08/2011 | CN102088320A Ultrasonic system and communication method thereof |
| 06/07/2011 | CA2357253C Method and apparatus to increase acoustic separation |
| 06/02/2011 | US20110128822 Underwater Communications |
| 05/10/2011 | US7940939 Vehicle trunk woofer |
| 04/28/2011 | US20110096633 Portable diver apparatus, comprising a portable computing device and an add on diver device |
| 04/28/2011 | US20110096632 Robust underwater communication system |
| 04/28/2011 | US20110096629 Acoustic signal generation system using moving reflecting surface |
| 04/21/2011 | US20110090763 Personal water safety device and method thereof |
| 04/21/2011 | US20110090762 Underwater navigation system |
| 04/20/2011 | EP2312763A1 Modulation device and demodulation device |
| 04/13/2011 | EP1206856B1 Sound communication system between a portable unit and a communication terminal |
| 04/12/2011 | US7925235 Communication system |
| 04/07/2011 | DE102009041171A1 System und Verfahren zur Lokalisierung mobiler Objekte System and method for locating mobile objects |
| 03/24/2011 | WO2011034389A2 Communication system using ultrasonic waves |
| 03/24/2011 | US20110068898 Remote control signaling using audio watermarks |
| 03/23/2011 | CN201772957U Reflecting device and ultrasonic wave calorimeter with reflecting device |
| 03/23/2011 | CN101427926B Electronic system receiving module and received signal conformance error compensation method |
| 03/16/2011 | CN101986361A Ultrasonic transceiver used for motion control of regional robot |
| 03/15/2011 | USRE42218 Underwater alert system |
| 03/10/2011 | WO2011027169A1 Acoustic transmission |
| 03/10/2011 | WO2011027168A1 Acoustic transmission |
| 03/09/2011 | EP2293469A1 Acoustic transmission |
| 03/09/2011 | EP2293468A1 Acoustic transmission |