| Patents for H04B 11 - Transmission systems employing ultrasonic, sonic or infrasonic waves (1,545) |
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| 12/05/2013 | US20130322214 Ultrasound-based localization of client devices in distributed communication systems, and related devices, systems, and methods |
| 11/21/2013 | WO2012131600A3 Transmitter and receiver synchronization for wireless telemetry systems |
| 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 |
| 11/14/2013 | WO2013168170A1 Communication device with ultrasonic capabilities and method of operating thereof |
| 11/14/2013 | US20130301392 Methods and apparatuses for communication of audio tokens |
| 11/13/2013 | CN203289452U Wireless audio system based on acoustic wave communication pairing |
| 11/06/2013 | EP2661099A1 Electroacoustic transducer |
| 11/06/2013 | CN203278798U Emission device using sounds to transmit data |
| 11/05/2013 | US8576668 Underwater communications |
| 11/05/2013 | US8576667 Underwater communications |
| 11/05/2013 | US8576666 Graphical user interface for flow noise modeling, analysis, and array design |
| 11/05/2013 | US8576665 Underwater wireless sensor |
| 10/31/2013 | WO2013160475A1 Wireless subsea seismic sensor and data collection methods |
| 10/30/2013 | EP2657723A1 Wireless subsea seismic sensor and data collection methods |
| 10/30/2013 | CN203261310U Sound wave transmission button device and sound wave transmission system |
| 10/30/2013 | CN103377386A Non-real card reader and communication method thereof |
| 10/30/2013 | CN102088320B Ultrasonic system and communication method thereof |
| 10/24/2013 | WO2013155546A1 Signalling device for divers |
| 10/23/2013 | CN103368659A Data sending method and device and data receiving method and device |
| 10/16/2013 | CN203243334U Underwater ultrasonic communication device |
| 10/16/2013 | CN102752058B Audio data transmission system, audio data transmission device and electronic sign tool |
| 10/10/2013 | US20130265855 Switching circuit for a transmission channel for ultrasound applications, transmission channel and process for driving a switching circuit |
| 10/09/2013 | CN101356751B Data communication device, receiver and data transmission method |
| 10/03/2013 | WO2013148859A1 Ultrasonic receiver front-end |
| 10/03/2013 | WO2013148464A1 A full-duplex ultrasonic through-wall communication and power delivery system with frequency tracking |
| 09/26/2013 | WO2013138892A1 System and method for monitoring fusible switches in a bank of three-phase capacitors connected as an earthed or non-earthed star, used on electrical-energy-distribution lines |
| 09/25/2013 | CN103327068A Information synchronization and interaction method and system based on voice frequency pulse signals |
| 09/25/2013 | CN103327021A Method, devices and system of multi-device interaction |
| 09/25/2013 | CN103326791A Physiological data collection method used for telemedicine |
| 09/18/2013 | CN203206253U Multispectral frequency identification device for surface acoustic wave device |
| 09/18/2013 | CN103312419A Method and system for data communication based on audio or ultrasonic |
| 09/17/2013 | US8537639 Underwater communications |
| 09/11/2013 | CN103297234A Dynamic token and dynamic password generating system and method |
| 09/10/2013 | US8531918 Underwater communications |
| 09/06/2013 | WO2013128188A1 Communication with an underwater vehicle |
| 08/29/2013 | WO2013124645A1 Wireless communication |
| 08/29/2013 | US20130223192 Ultrasonic transducer device, probe, electronic instrument, and ultrasonic diagnostic device |
| 08/29/2013 | US20130223190 Acoustic frequency interrogation and data system |
| 08/28/2013 | EP2630372A1 Device for monitoring a pump |
| 08/28/2013 | CN203166934U Ultrashort transceiver |
| 08/28/2013 | CN203166933U Audio information processing device |
| 08/28/2013 | CN103269252A Frequency identification device of multi-spectrum sound surface acoustic wave device |
| 08/21/2013 | CN101982943B Time domain rearrangement based ultra-phonic guided wave frequency dispersion compensation and multi-mode separating algorithm |
| 08/20/2013 | US8514662 Sonic receiver and method for receiving data that uses modulation frequncies that reduce the probability of conflict with ambient noise in the environment |
| 08/15/2013 | WO2013119525A1 Method and apparatus for ultrasonic data transmission and locationing |
| 08/15/2013 | WO2013066940A3 Channel simulator and method for acoustic communication |
| 08/14/2013 | CN103249952A Device for monitoring a pump |
| 08/14/2013 | CN103248434A Communication method for electronic device |
| 08/14/2013 | CN103244111A Method for calculating and analyzing working frequency on basis of sound transmission channel of drill string |
| 08/14/2013 | CN103239219A Online electronic sphygmomanometer and communication method thereof |
| 08/13/2013 | US8509680 Physical presence digital authentication system |
| 08/08/2013 | US20130204458 System, a method and, an apparatus for vehicular communication |
| 08/07/2013 | EP2624616A1 Communication terminal, wireless device, provider server, and wireless communication system |
| 08/07/2013 | EP2624234A1 A system, a method and an apparatus for vehicular communication |
| 08/06/2013 | US8503382 Method and system for a simplified user group selection scheme with finite-rate channel state information feedback for FDD multiuser MIMO downlink transmission |
| 08/01/2013 | US20130194894 Transmission/reception circuit, ultrasonic probe, and ultrasonic image display apparatus |
| 07/31/2013 | CN203102367U Traffic system audio data transmission near field payment system |
| 07/25/2013 | WO2013030672A3 Sensitive emission device and method of use |
| 07/18/2013 | WO2013106596A1 Amplification systems, carrier tracking systems and related methods for use in parametric sound systems |
| 07/18/2013 | WO2013104893A1 Transducer arrangement |
| 07/17/2013 | CN103209030A Electronic device and data transmission method thereof |
| 07/11/2013 | US20130178883 Low energy or minimum disturbance method for measuring frequency response functions of ultrasonic surgical devices in determining optimum operating point |
| 07/10/2013 | CN103199942A Audio communication method and terminal utilizing same |
| 07/03/2013 | EP2611049A1 Sonic M2M (machine to machine) communication using mobile communication device as a proxy |
| 07/03/2013 | EP2609753A2 Techniques for acoustic management of entertainment devices and systems |
| 07/03/2013 | EP2609698A2 System and method for sharing information between two or more devices |
| 07/02/2013 | US8477632 Antenna testing device |
| 06/27/2013 | WO2013095524A1 Reproduce a voice for a speaker based on vocal tract sensing using ultra wide band radar |
| 06/27/2013 | US20130163383 Ultrasonic probe device and its control method |
| 06/27/2013 | DE102012016755A1 Method for initiating function on multiple mobile terminals in auditorium, involves assigning function to digital signal that is coded by sound system in sound signal, where sound signal is emitted over sound generator of sound system |
| 06/26/2013 | CN203027256U Communication device and communication system |
| 06/20/2013 | WO2013090089A1 Method and apparatus for providing spatially selectable communications using deconstructed and delayed data streams |
| 06/19/2013 | CN203014830U Electronic signature tool |
| 06/18/2013 | US8467269 Apparatus, systems and methods for enhanced detection, synchronization and online Doppler scale estimation for underwater acoustic communications |
| 06/13/2013 | DE102011088225A1 Verfahren und Einrichtung zur Umfelderfassung eines Bewegungshilfsmittels mittels von pulsförmig ausgesendeten Schallsignalen Method and apparatus for detecting the surroundings of a motion auxiliary means of pulse-shaped signals emitted sound |
| 06/12/2013 | CN103152106A Ultrasonic information pushing method and system based on audio |
| 06/11/2013 | US8463185 Wireless communication system using surface acoustic wave (SAW) second harmonic techniques |
| 06/07/2013 | CA2792208A1 Systems and methods for communicating data through an electromagnetic barrier |
| 06/06/2013 | WO2013078996A1 Near field communication implementation method and system |
| 06/06/2013 | CA2839229A1 Near field communication implementation method and system |
| 05/30/2013 | US20130135970 Galvanically-Isolated Data Transmission Device |
| 05/28/2013 | US8451692 Underwater communications |
| 05/28/2013 | US8451086 Remote control signaling using audio watermarks |
| 05/23/2013 | US20130128689 Communication device and method for sensing and transmitting data for military sensors |
| 05/23/2013 | DE102007041480B4 Fahrzeugkommunikation Vehicle communication |
| 05/22/2013 | CN103119977A Communication terminal, wireless device, provider server, and wireless communication system |
| 05/16/2013 | WO2009035796A3 Groundwater monitoring system |
| 05/15/2013 | CN202940816U Audio data transmission system, transmission device and electronic signing tool |
| 05/15/2013 | CN202940815U Audio data transmission system, audio data transmission device and electronic sign tool |
| 05/07/2013 | US8437224 Underwater communications |
| 05/01/2013 | CN103078683A Document transmission method and document transmission system |
| 04/25/2013 | WO2013057481A1 Transducer for acoustic communications |
| 04/10/2013 | CN103036950A Service repeater |
| 04/03/2013 | CN103023580A Method for achieving data transmission through voice |
| 04/03/2013 | CN101924719B Adaptive clock reconstruction method and device, and audio decoding method and device |
| 04/02/2013 | US8411531 Modulation device, demodulation device, and acoustic signal transmission method |
| 03/21/2013 | WO2013038416A1 Method and system for transmitting a transaction identifier |
| 03/20/2013 | EP2569880A1 Method and device for identifying objects and triggering interactions by means of close-range coupling of acoustically modulated data signals |
| 03/14/2013 | US20130064035 Electromechanical transducer |