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| Application No. | Application Title | Issue Date |
| 20110299364 | Diver Communication System An underwater communications system is provided that transmits electromagnetic and/or magnetic signals to a remote receiver. The transmitter includes a data input. A digital data compressor compresses data to be transmitted. A modulator modulates compressed data onto a ... | 12/08/2011 |
| 20110299363 | COMMUNICATIONS SYSTEM An underwater communications system is provided that transmits electromagnetic and/or magnetic signals to a remote receiver. The transmitter includes a data input. A digital data compressor compresses data to be transmitted. A modulator modulates compressed data onto a ... | 12/08/2011 |
| 20110032794 | Undersea seismic monitoring network The present invention provides an undersea seismic monitoring network, the monitoring network comprises at least one underwater vehicle and at least two monitoring stations located on the seabed, where each of the monitoring stations comprises at least one sensor for ga... | 02/10/2011 |
| 20110013487 | APPARATUS, SYSTEMS AND METHODS FOR ENHANCED DETECTION, SYNCHRONIZATION AND ONLINE DOPPLER SCALE ESTIMATION FOR UNDERWATER ACOUSTIC COMMUNICATIONS Advantageous online and/or real-time OFDM-based underwater acoustic (UWA) apparatus, systems and methods are provided according to the present disclosure. The apparatus, systems and methods employ a receiver with a bank of parallel branches, with each branch having a se... | 01/20/2011 |
| 20100278014 | Underwater synchronisation system An underwater system (10) comprising a transmitter (12) for broadcasting an electromagnetic synchronisation signal and at least one node (14) that has a receiver for receiving that signal, the node being adapted to use the received signal for synchr... | 11/04/2010 |
| 20100135121 | Underwater communications system with adaptable carrier frequency An underwater communications system is provided that transmits electromagnetic and/or magnetic signals to a remote receiver. The transmitter includes a data input. A digital data compressor compresses data to be transmitted. A modulator modulates compressed data onto a ... | 06/03/2010 |
| 20100135122 | Underwater communications system comprising relay transceiver An underwater communications system is provided that transmits electromagnetic and/or magnetic signals to a remote receiver. The transmitter includes a data input. A digital data compressor compresses data to be transmitted. A modulator modulates compressed data onto a ... | 06/03/2010 |
| 20100091612 | UNDERWATER COMMUNICATION SYSTEM Underwater communication system comprising a plurality of communication modules, each provided with a microprocessor, a memory, a transmitter and a receiver unit; these communication modules are incorporated in an underwater computer and in a plurality of underwater equ... | 04/15/2010 |
| 20100085839 | Underwater navigation system An underwater communications system is provided that transmits electromagnetic and/or magnetic signals to a remote receiver. The transmitter includes a data input. A digital data compressor compresses data to be transmitted. A modulator modulates compressed data onto a ... | 04/08/2010 |
| 20100067331 | ITERATIVE CORRELATION-BASED EQUALIZER FOR UNDERWATER ACOUSTIC COMMUNICATIONS OVER TIME-VARYING CHANNELS Underwater communications apparatus and methods are presented using iterative correlation-based equalization in which initial estimated symbols of a current data block are produced using a correlation-based equalizer (CBE) based at least partially on the received sound ... | 03/18/2010 |
| 20090296527 | SYSTEM FOR MEASURING ACOUSTIC SIGNATURE OF AN OBJECT IN WATER A system for measuring acoustic signature of a target object in water includes a plurality of rigid segments connected to each other to form a longitudinal member and a plurality of floats connected to the longitudinal member. Two buoys are connected at two ends of the ... | 12/03/2009 |
| 20090245025 | Underwater communications An environmental monitoring system including at least one underwater measurement device and a transmitter for transmitting data from the measurement device to an above water station using a magnetically coupled antenna.... | 10/01/2009 |
| 20090219786 | MODEM AND METHOD FOR TRANSMITTING DATA IN A MEDIUM NOTABLY SUCH AS AIR AND WATER A method for transmitting data is disclosed having the following steps: emitting packets of at least two types: pure data (long packets) and acknowledgments of receipt (acknowledgment ) (short packets). Each packet is formed of three components: a—an acquisition pream... | 09/03/2009 |
| 20090219785 | METHOD AND SYSTEM FOR DETERMINING THE LOCATION AND/OR SPEED OF AT LEAST ONE SWIMMER Method for determining the location and/or speed of at least one swimmer, swimming through water, comprising: —sending acoustic signals through the water, using stationary acoustic transmitter means (AT) having a stationary position, or using mobile acoustic transmitt... | 09/03/2009 |
| 20090213697 | WIRELESS COMMUNICATION SYSTEM, TRANSMITTING DEVICE, RECEIVING DEVICE AND INFORMATION PROCESSING APPARATUS A wireless communication system includes a transmitting device and a receiving device, in which the transmitting device generates a signal including information and transmits the signal by electromagnetic waves and ultrasonic waves in the same frequency in parallel, and... | 08/27/2009 |
| 20090201766 | UNDERWATER DETECTOR The present disclosure provides an underwater detector including a power source for applying a predetermined voltage, a voltage control circuit for controlling the voltage based on a control signal, a gate signal generating module for outputting a gate signal, a switchi... | 08/13/2009 |
| 20090129204 | Apparatus, Systems and Methods For Enhanced Multi-Carrier Based Underwater Acoustic Communications Advantageous OFDM-based underwater acoustic (UWA) apparatus, systems and methods are provided according to the present disclosure. In general, OFDM transmissions over UWA channels encounter frequency-dependent Doppler drifts that destroy the orthogonality among OFDM sub... | 05/21/2009 |
| 20090067289 | Communicating using sonar signals at multiple frequencies An embodiment of an apparatus includes a communication circuit and a transducer array coupled to the communication circuit. The communication circuit is operable to generate first and second information signals, and the transducer array is operable to generate in respon... | 03/12/2009 |
| 20080304362 | Inter-diver signaling device and process Taps on a beam-interrupt button of an underwater signaling transceiver are encoded as binary frequency shift-key modulated Golay codes, which are transmitted via 56-58 kHz compression waves generated by a ring-shaped electromechanical transducer. Light emitting diodes f... | 12/11/2008 |
| 20080279047 | SYSTEM AND METHOD FOR UNDERWATER WIRELESS COMMUNICATION An underwater wireless communication system and method includes a sensor node for transforming measured underwater data into ultrasound signals, and transmitting the transformed ultrasound signals and receiving other ultrasound signals.... | 11/13/2008 |
| 20080198695 | System and method for using acoustic field parameters for communication A system and a method for conveying data using the vector components of the acoustic field, in addition to the scalar component is described. Receivers capable of determining the transmitted data values by measuring one or more parameters of an acoustic field are utiliz... | 08/21/2008 |
| 20080192576 | WATER SUBMERSIBLE COMMUNICATIONS DEVICES AND METHODS FOR USING THE SAME A water submersible communications device for use on a body of water includes a housing and a communications module. The housing has a geometric centroid. The housing is submersible in and floatable on the body of water. The communications module is mounted on and/or in... | 08/14/2008 |
| 20070223313 | Seismic modem A system for the transmission of data by seismic wave, the system having at least one transmitting unit, that at least one transmitting unit comprising a first processing unit encoding a first signal, the first processing unit being coupled to a digital to analog conver... | 09/27/2007 |
| 20070159925 | Lorentz acoustic transmitter for underwater communications Described is a device for generating an acoustic signal in an electrically conductive medium such as salt water. The device of the present invention has a broadband frequency response and supports high bandwidth data transmission. Reliability is improved in comparison t... | 07/12/2007 |
| 20070076527 | Multi-functional device and method for marine signaling and survival A multi-function marine emergency communication device for marine signaling and survival including a handheld waterproof housing for holding a plurality of tools; a power source mounted in the housing; and an electronic circuit board mounted in the housing and connected... | 04/05/2007 |
| 20070070814 | METHOD AND APPARATUS FOR ACOUSTIC SYSTEM HAVING A TRANSCEIVER MODULE An acoustic method and apparatus for an acoustic system use a transceiver module, which can transmit to a transmit acoustic element of a transmit sonar array and receive from a receive acoustic element of a receive sonar array in accordance with a common transmit/receiv... | 03/29/2007 |
| 20060280034 | Submarine remote surface platform A platform with a sensor is for coupling to a submarine or other underwater vehicle and for sending data about the seascape to the submarine. In an embodiment, the platform is coupled to the submarine via a cable that has communication lines in it. The sensor may be att... | 12/14/2006 |
| 20060034155 | Acoustic/underwater signaling device The present invention is concerned with an underwater communication device, and more specifically a device that is simple in design, is simple to operate, is powered solely by a simple pull from a swimmers or diver's hand against the resistance of a spring or elastic ba... | 02/16/2006 |
| 20050120796 | Attitude sensor The present invention provides an attitude sensing device and method for determining an attitude of a reference axis of a package containing a fibre optic sensor sensor. The attitude sensing device comprises an electromechanical attitude sensor for generating an electri... | 06/09/2005 |
| 20050088916 | Water acoustic coherently communication system and signal processing method having high code rate, low probability of error The present invention relates to a method and a system of a high code speed low error probability underwater acoustic coherent communication for underwater transferring instruction, data and image. The communication system includes a host machine installed on a mother s... | 04/28/2005 |
