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Patent Searching and Data


Matches 401 - 450 out of 1,828

Document Document Title
WO/2000/021020A2
A smart card (40) comprising: a memory (46) for storing information; at least one transmitting or receiving antenna (42); and a low frequency circuit (44), for handling information associated with said antenna and said memory, which info...  
WO/2000/018031A1
A method for providing multiple speaker locations around a listener (53) in a room with a sound source at a single location. The method comprising the steps of a) generating primary audio output by emitting audio compression waves from a...  
WO/2000/016309A1
An open-loop delay contour estimator (204) generates delay information during coding of an information signal. The delay contour is adjusted according to an error minimization criteria on a subframe basis, which allows a more precise est...  
WO/2000/015316A2
A plurality of individual toys (20, 22), at least a first one (20) of which generates acoustic signals (24) and at least a second one (22) of which receives acoustic signals. When the second toy (22) receives acoustic signals from the fi...  
WO/2000/011817A2
Disclosed is a method for transmitting information and a system therefor which is particularly suitable for digital transmission. At least one information signal consisting of a reference frequency channel and at least one information fr...  
WO/2000/001099A1
The invention relates to an ultrasonic transmission system. The signal used for transmission generates a broadband signal by means of a code spread and is able to eliminate echo by means of correlation. The transmission system has a tran...  
WO1999053635A8
A manual scan sonar integrates multiple technologies into a compact and low cost single beam sonar having the ability to generate wide sector views comparable to that of much larger and more expensive multi-beam sonar units. The manual s...  
WO/1999/053635A1
A manual scan sonar integrates multiple technologies into a compact and low cost single beam sonar having the ability to generate wide sector views comparable to that of much larger and more expensive multi-beam sonar units. The manual s...  
WO1999026221A3
The invention relates to a display element with an energy source having a display and a processor/memory. The energy source supplies energy to the display and the processor/memory, and the processor/memory can display data via the displa...  
WO1999030266A3
Remote energy supply process and system for an electronic information carrier. Known processes and devices do not allow supplying energy wirelessly to an information carrier arranged inside a thick-walled and/or metallic body because ene...  
WO/1999/032858A1
The present invention is directed to an improved method and apparatus for determining ultrasonically the quantity of liquid in a tank having multiple inventive aspects. One aspect includes an ultrasonic transducer having three layers, th...  
WO/1999/030266A2
Remote energy supply process and system for an electronic information carrier. Known processes and devices do not allow supplying energy wirelessly to an information carrier arranged inside a thick-walled and/or metallic body because ene...  
WO/1999/029058A1
An underwater modulator-demodulator (modem) apparatus for transmitting and receiving data at a high rate through water, said modem comprising: a) a transmitting section comprising: data source means, comprising digital data to be transmi...  
WO/1999/026221A2
The invention relates to a display element with an energy source having a display and a processor/memory. The energy source supplies energy to the display and the processor/memory, and the processor/memory can display data via the displa...  
WO/1999/020987A1
The invention provides a resonator for converting an input of electric, information-carrying signals into an output of acoustic vibrations capable of propagating the information, including at least one element capable of converting elect...  
WO/1999/017473A1
A seismic acoustic signal source (36) includes a hull (30) that has a wetted surface in contact with a body water (16). When underway, the draft of the hull (30) is substantially zero. An acoustic signal generator (36) is provided with a...  
WO/1999/009683A1
A personal underwater communication device which comprises: a display; a memory unit for storing a plurality of preset messages, each message being assigned a common message identification code; means for assigning a unique identificatio...  
WO/1998/045969A1
Disclosed is a communication and alert device for underwater divers, worn on the wrist of the diver or elsewhere and comprising an ultrasound transmitter (36) and receiver (42) operated by a microprocessor (30). A manual control element ...  
WO/1998/032248A1
A signalling system is provided which can be used to update the prices of goods which are electronically displayed on supermarket shelves (1). The signalling system comprises a first signalling device having an input terminal for receivi...  
WO/1998/017526A1
Call, alarm or like device for scuba divers during immersions, made up by a substantially cylindrical hollow container (1), sealed at the opposite ends by two stoppers (2, 3) or the like, within which an ultrasound electromagnetic electr...  
WO/1998/002977A1
The present invention is the emission of new sonic or subsonic compression waves from a region of interference of at least two ultrasonic wave trains (30, 32). In one embodiment, two ultrasonic emitters (20) are oriented so as to cause i...  
WO/1998/002978A1
The present invention is the emission of new sonic or subsonic compression waves from a resonant cavity (80) as a result of interference of at least two ultrasonic wave trains (30, 32). In one embodiment, two ultrasonic emitters (20) are...  
WO/1997/034163A1
The disclosure relates to an emitter and receiver device for ultrasound waves, with a miniaturised battery-operated stand-alone ultrasound emitter which can be fitted in a small capsule housing for the purpose of medical examinations, an...  
WO/1997/031437A1
A digital communications network is provided using digital sonic and ultrasonic communications, i.e., communications using acoustic energy instead of RF energy. The "acoustic spectrum", as opposed to the RF spectrum, is uncluttered and u...  
WO/1997/026551A1
An underwater communications device (10), wherein each device includes: a signal receiver, a signal transmitter, a transducer (12) associated with the signal receiver and with the signal transmitter, and having a first field of view; a c...  
WO/1996/039754A1
A sound system (fig. 2) is provided which utilizes finite amplitude ultrasonic sources. These sources may be used alone or in combination with finite amplitude sonic sources. A controller (90) manipulates the phase, frequency and amplitu...  
WO/1996/013786A1
An electronic process and device are disclosed for carrying out transactions related to lottery and betting games by telecommunications. The object of the invention is to develop an electronic process and device for carrying out transact...  
WO/1995/024658A1
A method and apparatus for sensing one or more physical parameters, including acoustic waves having frequencies from approximately 0 Hz to 15 Hz, electromagnetic waves having frequencies from approximately 0 Hz through 35 Hz and seismic ...  
WO/1995/024171A1
An active pressure fluctuation control system to control noise in ducts including a vibratable element (2) within a duct (1) which can be adapted to vibrate so as to form a cancelling waveform to attenuate sound wave within the duct syst...  
WO/1995/024661A1
An infrasonic frequency resonant circuit and method of use thereof. An electric power distribution system (26, 24, 22, 18, 23) is employed both as antenna for ISF signals and as a source of inductive reactance for a resonant circuit tune...  
WO/1995/022065A1
A general-purpose, adaptable, device for interfacing acoustic and ultrasonic transducers to circuits for high resolution distance and motion measurement, and two-way communication. A generator signal (52) synchronizes to a sensing transd...  
WO/1995/019678A1
Waterborne acoustic signals are received and processed into electrical driver signals to energize a transducer (30) held in selectively controllable vibration-transmitting engagement with a tooth (29) of an underwater diver. The transduc...  
WO/1995/016312A1
An underwater acoustic communications system utilizes phase coherent modulation (56) and demodulation (68) in which high data rates are achieved through the use of rapid Doppler removal, a specialized sample timing control technique and ...  
WO/1995/006309A1
A voice operated remote control system (10) transmits representations of the voice commands to a controlled device (14). The device produces voice signals in response to the transmitted representations. The remote control device, which i...  
WO/1994/010629A1
An underwater local area network (10) for oceanographic observation and data acquisition includes a network node (14) for telemetering data to a final destination and plurality of sensors each of the sensors having an acoustic modem to t...  
WO/1993/014577A1
A sound wave generator (10) is effective for producing ultrasonic sound wave vibrations as well as low frequency vibrations which are offensive to rodents. A wiring conductor (22), which serves as a sonic radiator, is attached to an end ...  
WO/1992/012581A1
In order to establish a voice link between divers under water, the invention calls for ultrasonic transmission using a pulse-modulation technique with constant pulse amplitude, the pulse amplitude being held just below the cavitation lim...  
WO/1991/007818A1
The invention concerns a surface-wave filter in which the acoustic wavepath is reflected in order to reduce the substrate size necessary. The reflections are chosen so that interference due to temperature effects is excluded. The use of ...  
WO/1990/002958A1
This invention relates to an underwater detector which emits an ultrasonic detection signal by use of a transmitter disposed at a first position in water, detects the underwater condition by receiving a reflection signal resulting from t...  
WO/1989/004033A1
A system for transmitting and receiving remote-control signals comprises a portable control desk (1) and, adapted for placing on the controlled object and connected in series, a control command receiver (2), a synchropulse selector (3), ...  
WO/1987/004670A1
A sensing apparatus capable of delivering a control signal in response to contact between an element of the apparatus and an external object should respond readily to a predetermined level of contact, and should be sensitive along all po...  
WO/1982/000910A1
An ultrasonic communication system capable of wireless installation and supervised operation is achieved by communicating each information bit as two distinct ultrasonic frequencies separated in frequency enough to assure that the signal...  
WO/1981/000496A1
A system which automatically or manually signals and senses the event of a person falling overboard from a vessel (12) into water (14) or a SCUBA diver in distress comprises a portable transmitter (16, 72) coupled to a sound-producing tr...  
WO/1980/000051A1
A surface acoustic wave device is used as a unique word detector and coherent demodulator for a digital code differential phase-shift signal. The device improves code word detection by providing a coherent reference with a correlation ga...  
JP2019197969A
[Subject] Improvement-ization of communication performance is attained about sound communication of an aquatic office and an underwater mobile. [Means for Solution] An aquatic office where a communication state control system was provide...  
JP6596144B2  
JP2019530264A
A data transmission system of a data receiving method of a data transmission method of a sound wave base, a device, an electronic device, and a sound wave base, a device, an electronic device, and a sound wave base. A data transmission m...  
JP2019169949A
[Subject] Information is transmitted to a terminal unit, without needing use of a receiver machine sole possession of is taken by wireless communications. [Means for Solution] Reproduction system 100 acquires an audio signal showing obje...  
JP6577429B2  
JP6578455B2  

Matches 401 - 450 out of 1,828