| Patents for H04B 11 - Transmission systems employing ultrasonic, sonic or infrasonic waves (1,545) |
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| 03/08/2011 | US7903609 Method and system for an improved user group selection scheme with finite-rate channel state information feedback for FDD multiuser MIMO downlink transmission |
| 03/02/2011 | CN101982943A Time domain rearrangement based ultra-phonic guided wave frequency dispersion compensation and multi-mode separating algorithm |
| 02/22/2011 | US7894306 Apparatus and method for data transfer through a substrate |
| 02/16/2011 | EP2283596A1 Device and method for transmitting information in solid media |
| 02/09/2011 | EP2282424A1 Human body sound transmission system and method for transmitting a plurality of signals |
| 02/03/2011 | DE102009035055A1 Method for processing ultrasonic signal of e.g. keyboard to control audio device, involves determining frequency ratio of generated acoustic signals, and determining actuation of key by frequency ratio |
| 01/26/2011 | EP2277281A2 Home appliance system and operation method thereof |
| 01/26/2011 | CN201721409U Backing auxiliary prompting system |
| 01/26/2011 | CN101567820B Energy-saving medium access control method in underwater acoustic network |
| 01/20/2011 | US20110013487 Apparatus, systems and methods for enhanced detection, synchronization and online doppler scale estimation for underwater acoustic communications |
| 01/18/2011 | US7872947 System and method for underwater wireless communication |
| 01/18/2011 | US7872946 Autonomous waterproof electronic signaling device |
| 01/13/2011 | US20110007606 Underwater Surveillance |
| 01/06/2011 | WO2011002540A1 Acoustic activation of components of an implantable medical device |
| 01/06/2011 | WO2011002539A1 Acoustic activation of components of an implantable medical device |
| 01/05/2011 | EP1378079B1 Communication system for underwater use |
| 12/29/2010 | CN101933242A Modulation device and demodulation device |
| 12/28/2010 | US7859944 Apparatus, systems and methods for enhanced multi-carrier based underwater acoustic communications |
| 12/28/2010 | US7857762 Method of generating a predetermined wave field |
| 12/22/2010 | CN101924719A Adaptive clock reconstruction method and device, and audio decoding method and device |
| 12/16/2010 | WO2010142733A1 Defibrillator terminal |
| 12/14/2010 | US7853641 Method and system for accessing information and/or data available on a wide area computer network |
| 11/16/2010 | US7835228 Modem and method for transmitting data in a medium notably such as air and water |
| 11/11/2010 | DE102010015222A1 Method for transmission of frequency-dependent signal from transmitter to receiver over transmission channel, involves transmitting signal to partial transmitters, where each partial transmitter has different set of transmission units |
| 11/10/2010 | EP1964292B1 Improvements in data communications |
| 11/02/2010 | US7826416 Method and system for a simplified user group selection scheme with finite-rate channel state information feedback for FDD multiuser MIMO downlink transmission |
| 10/27/2010 | CN101873177A Sound wave communication method through drill rod |
| 10/14/2010 | WO2010084308A3 Acoustic position-determination system |
| 10/13/2010 | CN101243364B Automation network field device using ultrasound communication link |
| 10/07/2010 | US20100256976 Physical presence digital authentication system |
| 10/07/2010 | DE202009017930U1 Virtuelles Mikrofon mit fremdmoduliertem Ultraschall Virtual Microphone with fremdmoduliertem ultrasound |
| 09/30/2010 | WO2010108537A1 Hearing instrument and method for providing hearing assistance |
| 09/30/2010 | US20100245119 Two-tier streamer communication system |
| 09/14/2010 | US7796960 Signal transmitter linearization |
| 09/14/2010 | US7796676 Signalling system |
| 09/08/2010 | CN101827064A Modulation device, modulation method, demodulation device, and demodulation method |
| 08/25/2010 | CN101816135A ultrasound detectors |
| 08/10/2010 | US7773459 Underwater sounding method and apparatus |
| 08/03/2010 | US7768875 Underwater sounding apparatus capable of calculating fish quantity information about fish school and method of such calculation |
| 07/29/2010 | WO2010050700A3 Method and apparatus for wireless communication using an acoustic signal |
| 07/29/2010 | DE202010005743U1 Gerät am Arm zur Übertragung von Ultraschallwellen Device on the arm for transmitting ultrasonic waves |
| 07/27/2010 | US7764840 System, method and apparatus for clustering features using an expansion shape |
| 07/21/2010 | EP2207716A2 Subsea operations support system |
| 07/13/2010 | US7755971 Sensing system |
| 06/29/2010 | US7747220 Wireless communication system using surface acoustic wave (SAW) second harmonic techniques |
| 06/24/2010 | US20100157739 Multi-frequency, Multi-beam Acoustic Doppler System |
| 06/23/2010 | EP2198539A1 Underwater communications |
| 06/15/2010 | US7739339 System and method of communications within a virtual environment |
| 06/08/2010 | US7733742 Method and installation for acousto-optic imaging |
| 06/03/2010 | WO2010062806A1 Voice-estimation interface and communication system |
| 06/03/2010 | US20100135121 Underwater communications system with adaptable carrier frequency |
| 05/26/2010 | EP2188923A1 Diver monitoring and communication system |
| 05/26/2010 | EP2188922A2 Ultrasound detectors |
| 05/26/2010 | EP1247350B1 Parametric audio system |
| 05/06/2010 | WO2010050700A2 Method and apparatus for wireless communication using an acoustic signal |
| 05/06/2010 | US20100107959 Delivery systems for pressure protecting and delivering a submerged payload and methods for using the same |
| 04/29/2010 | CA2740781A1 System and method for automatic determination of the physical location of data center equipment |
| 04/28/2010 | CN1659599B Ultrasonic transmitter and receiver systems and products using the same |
| 04/27/2010 | US7706838 Physical presence digital authentication system |
| 04/27/2010 | US7706548 Method and apparatus for computer communication using audio signals |
| 04/20/2010 | US7701895 Method and system for acoustic communication |
| 04/15/2010 | US20100091612 Underwater communication system |
| 04/14/2010 | EP2175575A1 Underwater communication system |
| 04/08/2010 | US20100085839 Underwater navigation system |
| 04/01/2010 | WO2010034874A1 Dual-mode loudspeaker |
| 04/01/2010 | US20100080086 Acoustic fingerprinting of mechanical devices |
| 03/30/2010 | US7688680 Systems and methods for visual light communication in an underwater environment |
| 03/24/2010 | EP2166683A1 Modulation device, demodulation device, and acoustic signal transmission method |
| 03/18/2010 | WO2010030513A1 Iterative correlation-based equalizer for underwater acoustic communications over time-varying channels |
| 03/18/2010 | US20100067331 Iterative correlation-based equalizer for underwater acoustic communications over time-varying channels |
| 03/17/2010 | CN201426119Y Ultrasonic transceiver circuit |
| 03/11/2010 | US20100061187 Positioning system |
| 03/04/2010 | WO2010022528A1 Method for wireless transmission between two electroacoustic transducers, and device for carrying out said method |
| 02/25/2010 | WO2010021810A1 Wireless high capacity sub-sea communications system |
| 02/11/2010 | WO2010016589A1 Modulation device and demodulation device |
| 01/28/2010 | WO2010011629A1 Synthetic structure for asymmetric eddies in the ocean |
| 01/21/2010 | WO2008075092A9 Data transfer |
| 12/30/2009 | WO2009158062A1 Systems and methods of monitoring the acoustic coupling of medical devices |
| 12/29/2009 | US7639565 Point source localization sonar system and method |
| 12/24/2009 | US20090315687 Method and apparatus for computer communication using audio signals |
| 12/23/2009 | WO2009133276A3 Human/machines/sea mammals interaction interface by transmission/reception of aerial and submarine signals |
| 12/16/2009 | EP2132884A1 System and method for performing channel estimation using interpolation |
| 12/16/2009 | CN101602343A System and method for assisting car backing |
| 12/10/2009 | US20090303840 Method for removing micro-debris and device of the same |
| 12/08/2009 | US7630337 Method and system for an improved user group selection scheme with finite-rate channel state information feedback for FDD multiuser MIMO downlink transmission |
| 12/03/2009 | US20090296527 System for measuring acoustic signature of an object in water |
| 11/25/2009 | EP2123325A2 Wireless execution for medical implants |
| 11/25/2009 | EP2122868A1 Data transfer |
| 11/18/2009 | CN101582724A Method for modeling seamless acoustic transmission channel of periodic drill rod |
| 11/12/2009 | WO2009136786A1 A method of covertly transmitting information, a method of recapturing covertly transmitted information, a sonar transmitting unit, a sonar receiving unit and a computer program product for covertly transmitting information and a computer program product for recapturing covertly transmitted information |
| 11/12/2009 | US20090279389 Ultrasonic signal communication device, communication device, communication device for divers, communication system, and communication method |
| 11/11/2009 | EP2117140A1 A method of covertly transmitting information, a method of recapturing covertly transmitted information, a sonar transmitting unit, a sonar receiving unit and a computer program product for covertly transmitting information and a computer program product for recapturing covertly transmitted information |
| 11/10/2009 | US7615009 System and method for optical data transmission in ultrasound imaging |
| 11/05/2009 | WO2009133276A2 Human/machines/sea mammals interaction interface by transmission/reception of aerial and submarine signals |
| 11/03/2009 | US7613074 Non-linear optoacoustic narrowband communications technique |
| 11/03/2009 | CA2553507C Vibratory data communication between devices |
| 10/29/2009 | WO2009061562A8 Subsea operations support system |
| 10/29/2009 | US20090268562 Thermoacoustic device |
| 10/29/2009 | US20090268561 Thermoacoustic device |
| 10/29/2009 | US20090268560 Thermoacoustic device |