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Patent Searching and Data


Matches 351 - 400 out of 1,886

Document Document Title
WO/2004/049604A1
A Wireless Underwater Communications System (600) including: a pair of at least half duplex submersible transceivers (610, 620) having adaptive parametric tuning there-between, using at least one transmission frequency (630, 640) of at l...  
WO2004019653A3
A system using the nonlinearity of a propagation medium to demodulate an ultrasonic wave having audio modulated onto the ultrasonic frequency, audio signal processing circuitry providing a delayed audio signal and an envelope signal whic...  
WO2003091869A3
A system for remotely producing a response on a computer using acoustic signaling, comprising; (a) at least one device adapted for producing at least one acoustic tone, and;(b) a computer for receiving said acoustic tone and for producin...  
WO2003087868A3
A transceiver (101) preferably embedded within a wearable security watch (100 or 200), PDA, or other device which achieves a variety of wireless ultrasonic and/or radio-frequency based functions, including identification and proximity an...  
WO/2004/023682A1
The invention relates to a method of transmitting data using sound waves between an emitting device (2) and a receiving device (1). The aforementioned emitting device is provided with a first electroacoustic transducer (26) for transmitt...  
WO/2004/019653A2
A system using the nonlinearity of a propagation medium to demodulate an ultrasonic wave having audio modulated onto the ultrasonic frequency, audio signal processing circuitry providing a delayed audio signal and an envelope signal whic...  
WO2003096593A3
An apparatus (200) and method for bi-directional communication using sound waves is disclosed. The invention uses a multi-carrier modulation scheme to transmit and receive digital data on acoustic waves. In one embodiment, acoustic waves...  
WO/2004/005953A2
Dive computers and methods of logging information including position, audio and video information are disclosed. In one embodiment, the invention includes a processor, a global positioning system receiver connected to the processor and a...  
WO/2004/004185A1
An apparatus and method for communication using sound waves is disclosed. More particularly, orthogonal frequency division multiplexing scheme is used to transmit (600) and receive (700) digital data on sound waves. In one embodiment, th...  
WO/2004/001961A2
A method for sensing acoustic energy as the energy passes from a more (dense10) to a less dense medium (20) while compensating for energy level loses that may have occurred along the acoustic path of the acoustic energy. The method may b...  
WO2003001231A3
An imaging sonar system develops three-dimensional images of the space below, to the sides and forward of a ship (102). Various features permit the system to be used in non-military environments and make possible low cost with substantia...  
WO2003084081A3
An underwater communication device (10) in combination with a chemiluminescent glow stick (35). The combination comprises a rigid housing (15) having a seat structure (20) for receiving a chemiluminescent glow stick (35) on an outer face...  
WO/2003/101185A2
A fishing system buoy (10) has a watertight bulbous shell housing an electronic load (25) and with a center of mass located within a lower half (12) of the shell. The load includes sonar operatively coupled via a microprocessor with a ra...  
WO/2003/101302A1
The invention relates to a method of generating a predetermined objective wave field in a medium using a first network of transducers (T1-Tn). The inventive method consists in first using each transducer i of the first network to emit an...  
WO/2003/096593A2
An apparatus (200) and method for bi-directional communication using sound waves is disclosed. The invention uses a multi-carrier modulation scheme to transmit and receive digital data on acoustic waves. In one embodiment, acoustic waves...  
WO/2003/093867A1
A system comprising at least one transmitter (31) and at least one receiver (4x) for locating an animal, person or object equipped with the transmitter (3) or the receiver (4x) using an ultrasonic signal comprising an identification code...  
WO/2003/091869A2
A system for remotely producing a response on a computer using acoustic signaling, comprising; (a) at least one device adapted for producing at least one acoustic tone, and;(b) a computer for receiving said acoustic tone and for producin...  
WO/2003/087868A2
A transceiver (101) preferably embedded within a wearable security watch (100 or 200), PDA, or other device which achieves a variety of wireless ultrasonic and/or radio-frequency based functions, including identification and proximity an...  
WO2003003625A3
A method of wirelessly communicating between a first and second device is disclosed, as well as devices for carrying out the method. The method has the steps of: transmitting a first set of data from the first device to the second device...  
WO/2003/084104A1
The present invention provides a method and calibration unit for calibrating a plurality of receiver channels in a multichannel receiver. The method comprises the steps of: sampling at each of said receiver channels a transmitted wave ha...  
WO/2003/084081A2
An underwater communication device (10) in combination with a chemiluminescent glow stick (35). The combination comprises a rigid housing (15) having a seat structure (20) for receiving a chemiluminescent glow stick (35) on an outer face...  
WO/2003/079572A1
A system for generating parametric output directly from a prerecorded and error corrected parametric signal (80) for playback in a parametric loudspeaker system. The method includes the step of retrieving a pre-encoded audio signal (80) ...  
WO2002047295A3
According to said method, each person is allocated a mobile receiver, which contains information stored in a memory. A respective code signal is assigned to said information. One or more first transmitters transmit(s) code signals in res...  
WO2003009499A3
A method and apparatus for transmitting information from a conversation in a room to a remote listener comprising selecting a structure (101) in the room which is capable of supporting vibration, selecting an electromechanical force tran...  
WO2002048991A3
The invention relates to a method for determining current location-specific information of individuals by using acoustic and/or optical information, whereby a mobile or stationary receiver is assigned to each individual. This receiver co...  
WO/2003/052743A1
An information transmitting system in which objective information can be transmitted through the medium of voice, and an information encoder and an information decoder for use therein. The information encoder (31) converts inputted chara...  
WO/2003/044422A1
The invention relates to a transmitting-receiving unit for a sensor device designed for using sound waves or similarly propagating waves. The transmitting-receiving unit comprises a transmitting element (4), a receiving element (5) and a...  
WO2002082696A3
For digital underwater transmission an information sequence (17) of digital bits is partitioned into a succession of symbols each comprising n bits where n is equal to or greater than one (2 potential symbols), each symbol (19) is replac...  
WO2002082695A3
In a digital acoustic transmission device in which a digital information sequence (31) is electrically modulated (22) on a carrier cos omega t, the modulated carrier (23) is prefaced with at least two pulse signals (24) of known timing r...  
WO2002049244A3
The invention relates to the field of sound engineering and more particularly, to methods for acoustic energetic transmission to biological beings. The object of the invention is lowering of the required power of acoustic vibration sourc...  
WO/2003/009499A2
A method and apparatus for transmitting information from a conversation in a room to a remote listener comprising selecting a structure (101) in the room which is capable of supporting vibration, selecting an electromechanical force tran...  
WO/2003/003625A2
A method of wirelessly communicating between a first and second device is disclosed, as well as devices for carrying out the method. The method has the steps of: transmitting a first set of data from the first device to the second device...  
WO/2003/001231A2
An imaging sonar system develops three-dimensional images of the space below, to the sides and forward of a ship (102). Various features permit the system to be used in non-military environments and make possible low cost with substantia...  
WO2002048991A9
The invention relates to a method for determining current location-specific information of individuals by using acoustic and/or optical information, whereby a mobile or stationary receiver is assigned to each individual. This receiver co...  
WO/2002/093773A1
A system for generating at least one remote virtual speaker location in connection with at least a partial reflective environment (12, 12, 14 or 15) in combination with an audio speaker for creating multiple sound effects including a vir...  
WO/2002/082696A2
For digital underwater transmission an information sequence (17) of digital bits is partitioned into a succession of symbols each comprising n bits where n is equal to or greater than one (2?n� potential symbols), each symbol (19) is r...  
WO/2002/082695A2
In a digital acoustic transmission device in which a digital information sequence (31) is electrically modulated (22) on a carrier cos $g(v)t, the modulated carrier (23) is prefaced with at least two pulse signals (24) of known timing re...  
WO/2002/078220A1
The invention concerns a data transmission method in an acoustic and/or microwave radio system. The invention is characterised in that each time the station receives or generates data messages, it carries out the following steps: if it i...  
WO/2002/049244A2
The invention relates to the field of sound engineering and more particularly, to methods for acoustic energetic transmission to biological beings. The object of the invention is lowering of the required power of acoustic vibration sourc...  
WO/2002/048991A2
The invention relates to a method for determining current location-specific information of individuals by using acoustic and/or optical information, whereby a mobile or stationary receiver is assigned to each individual. This receiver co...  
WO/2002/047295A2
According to said method, each person is allocated a mobile receiver, which contains information stored in a memory. A respective code signal is assigned to said information. One or more first transmitters transmit(s) code signals in res...  
WO2001057620A3
The interactive authentication system allows a consumer to interact with a base station, such as broadcast media (11) or PC (14), to receive coupons, special sales offers, and other information with an electronic card (10). The electroni...  
WO2001057625A3
The interactive authentication system allows a consumer to interact with a base station, such as broadcast media (e.g., television and radio) or PC, to receive coupons, special sales offers, and other information with an electronic card....  
WO2001058175A3  
WO2001057619A3
The interactive authentication system allows a consumer to interact with a base station (14), such as broadcast media (e.g., television and radio) or PC, to receive coupons, special sales offers, and other information with an electronic ...  
WO2001099389A3
An ultrasonic communication system includes an omnidirectional ultrasonic transducer (30) including a housing (34) having a closed side (36) and an open side (38) defining an aperture (40) in the housing (34). A diaphragm (42) is mounted...  
WO2001057624A3
The interactive authentication system allows a consumer to interact with a base station, such as broadcast media (e.g., television and radio) or PC, to receive coupons, special sales offers, and other information with an electronic card....  
WO2001058174A3
The interactive authentication system allows a consumer to interact with a base station (11, 12, 13, 14), such as broadcast media (e.g., television (12) and radio (11)) or PC (14), to receive coupons, special sales offers, and other info...  
WO/2002/010793A1
The invention concerns a device comprising an acoustic source (1) located on the support boat (2) whereof the acoustic pulse transmissions (12) are synchronised by a time base (9). Each diver bears a battery-powered (10) receiver and sig...  
WO2001057622A3
The interactive authentication system allows a consumer to interact with a base station, such as broadcast media (e.g., television and radio) or PC, to receive coupons, special sales offers, and other information with an electronic card....  

Matches 351 - 400 out of 1,886