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JP4161020B2 |
To provide a data transmission system which neither malfunctions nor consumes unnecessary power even when data transmission devices are adjacently installed and uses an underwater ultrasonic wave for wave observation. A data transmission...
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JP4152041B2 |
To introduce a signal into an interior of a vehicle without making a hole to a windowpane or a body. Electrodes 13, 23 are oppositely fitted to both faces of a windowpane 5 as signal transmission means in the communication system 8 so as...
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JP4146188B2 |
An ultrasonic coordinate input apparatus identifies using ultrasonic waves whether an input pen contacts a handwriting surface or it is held in the air within a predetermined distance, and can input not only a contact input locus but als...
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JP2008531984A |
Signalling and localisation device for an individual in the sea, including an ultrasonic wave transmitter constituting an individual alarm unit carried by the individual in the sea designed to transmit carrier waves of primary signals; a...
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JP4110180B2 |
A passive ultrasonic tag is provided and an ultrasonic reading system is constructed more simply and records and/or reads information more reliably by using ultrasonic waves for transmission/reception. A passive ultrasonic tag according ...
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JP4090656B2 |
To provide a transmission system using an underwater ultrasonic wave that causes no malfunction and consumes no useless power even when a plurality of data transmitters are installed adjacent to each other and can receive data without be...
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JP4087253B2 |
In a digital acoustic transmission device in which a digital sequence ( 31 ) is electrically modulated ( 22 ) on a carrier cos omegat, the modulated carrier ( 23 ) is prefaced with at least two pulse signals ( 24 ) of known timing relati...
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JP2008503171A |
A robust underwater communication system, for communication between an acoustic signal transmitter and a remotely positioned acoustic signal receiver, wherein transmitted data is carried by a plurality of symbols each having two componen...
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JP4003672B2 |
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JP3998287B2 |
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JP2007228299A |
To raise the transmission speed compared with that using a piezoelectric element for generating compressional waves, and to improve the quality of the data transmission. A data processor circuit 10 generates transmission data and reads t...
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JP2007228175A |
To suppress the generation of receiving errors in the transmission/reception of acoustic signals. The acoustic signal transmission system which is a system for transmitting information by acoustic waves is provided with a modulation devi...
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JP3966089B2 |
To provide an underwater communication system in which communication stability is improved and a communication velocity is accelerated by suppressing an influence of reflection or the like of acoustic signals on a propagation path. A rec...
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JP2007200072A |
To provide an IC tag system which is highly versatile and highly precise in recognition. This reader is provided with: an ultrasound signal transmission means having an ultrasound generating means; an ultrasound signal receiving means eq...
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JP2007184860A |
To provide a digital transmitting device whose transmission delay is very small by using an ISM band and which transmits a highly reliable digital signal at high speed.A plurality of transceivers 216a1 to 216an of an ISM band with differ...
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JP2007174421A |
To provide a remote controller capable of preventing an apparatus to be controlled from being erroneously operated caused by a reflection wave or external noise.A remote controller is provided with: a transmission circuit section 2 which...
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JP3935848B2 |
To make an ultrasonic transducer reducible in cost and improvable in performance. This transducer is provided with a transduction circuit 2 for transducing an ultrasonic wave U into a high-frequency electric signal Zi, a local oscillatio...
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JP3934223B2 |
To improve safety in diving by informing a body or a leader of diving data, such as residual pressure, or residual divable time. This diving computer is provided with an ID holding part 15 for setting ID data which meets another device i...
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JP3929299B2 |
To enhance transmission velocity of acoustic communication. A transmitter 1 performs both or either of amplitude modulation based on transmission information and phase modulation, and modulation by a signal which shows a window function,...
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JP3897991B2 |
To provide a transmitting circuit which enables the suppression of the degrading of images obtained using harmonics generated in vivo or from contrast media by reducing the generation of the harmonics in the transmitting circuit for ultr...
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JP2007013413A |
To provide a portable terminal and an emergency assist requesting method for notifying those around a user of his or her existence without feeling hesitant when such circumstances that the user is isolated from the outside world just lik...
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JP2006340284A |
To suppress loss of transmitting power at the time of realizing simultaneous transmission of information and power using the ultrasonic wave.The ultrasonic modulation transmitting circuit comprises a carrier circuit 21 for generating and...
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JP3855847B2 |
To provide a small-sized underwater sound source capable of transmitting a low frequency sound wave with a high sound pressure level and a sharp directivity. The underwater sound source includes: a sound source for transmitting a sound w...
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JP3834579B1 |
To provide a new information providing system, which is an information providing system for providing various information to a terminal. An information providing system 1 according to an embodiment of the present invention transmits vari...
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JP3821666B2 |
To enhance the transmission rate of acoustic communication. A transmission section 1 applies either or both of amplitude modulation and phase modulation based on transmission information and modulation based on a signal representing a wi...
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JP3822224B1 |
A novel information providing system for providing various information to a terminal is proposed. The information providing system 1 according to an embodiment of the present invention includes a transmitter 10 for transmitting various i...
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JP3808678B2 |
To ensure transmission of an information signal in the case of handling multi-channel signals with respect to a technology employed for transmitting an audible tone signal and an information signal attended on it at the same time to a ma...
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JP2006111207A |
To provide a phone call system capable of simultaneously solving three inconveniences of voice troubles due to a pressure-proof structure of a vessel with equipment necessary for phone call built therein, troubles of wearing a mouth mask...
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JP3753251B1 |
To accurately transmit phase information from a converter array unit to a sound source unit. A probe wave is transmitted from a sound source unit 24 to a converter array unit 20. The converter array unit receives the probe wave and gener...
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JP2006033640A |
To provide an ultrasonic transmitting/receiving apparatus capable of modulating and transmitting/receiving ultrasonic vibration with sounds via a metal plate, synthetic resin plate, metal rod, synthetic resin rod, metal wall, concrete, t...
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JP3733885B2 |
To provide an underwater communication system which allows an underwater station to reduce power consumption. A marine station 1 notifies the location information of the latitude and longitude of the marine station 1, which is obtained b...
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JP2005537757A |
There is described a method of transmitting data by means of acoustic waves between a transmitter device ( 2 ) and a receiver device ( 1 ) wherein the transmitter device has a first electroacoustic transducer ( 26 ) for transmitting an a...
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JP2005295378A |
To provide an ultrasonic digital communication device that is a communication system utilizing ultrasonic waves and uses a wide-band ultrasonic wave generator and a receiver for transmitting and receiving ultrasonic waves that are subjec...
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JP2005279274A |
To provide an ultrasound system in which sensitivity of an ultrasound probe is enhanced and a diameter of the probe as well as probe temperature is kept at a desired level.An ultrasound system includes an ultrasound probe configured for ...
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JP3702975B2 |
To surely perform ultrasonic communication by utilizing non- compressible fluid inside a pipe without enlarging the flow resistance of water so much even when the energy of ultrasonic waves for performing transfer with the water is enlar...
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JP2005269378A |
To provide a marine information providing buoy for underwater which can offer marine information to an underwater ship sailing underwater or the like and can be configured more easily.This marine information providing buoy for underwater...
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JP2005522921A |
A transceiver preferably embedded within a wearable security watch, PDA, or other device which achieves a variety of wireless ultrasonic and/or radio-frequency based functions, including digital identification and proximity and sensation...
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JP3668402B2 |
To provide a voice reaction type machine having a communication means satisfactory for both the machine and a human being in a communication space, where the machine and the human being coexist, concerning the voice reaction type machine...
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JP3626651B2 |
To provide a data transmission system using mechanical vibration that can transmit data with a system other than a wired system/wireless system and authenticate the person in question.genuine article without the need for any intelligent ...
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JP3606417B2 |
To increase acoustic energy transferred to/from fluid, and to decrease the circulation resistance of fluid by centripetally providing support bars more than three inside piping, providing through holes on an acoustic transmitter/receiver...
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JP2004527968A |
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 v...
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JP3547459B2 |
PURPOSE: To realize a three-dimensional picture display system in which the perspective state of a three-dimensional picture displayed on a computer monitor can be changed like a person views an object. CONSTITUTION: A transmission modul...
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JP3540715B2 |
To provide an underwater propagation signal receiver, capable of obtaining sufficient amplification factor without causing oscillation, also detecting a signal that is about to be buried in noise and also reliably discriminating the exis...
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JP2004179956A |
To realize simultaneous loud-voice call which does not need call-line switching, with respect to the conversation established between a slave unit, installed outside the dwelling unit entrance, for example located at a front door, and a ...
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JP2004089311A |
To provide an ultrasonic transmission/reception device capable of scanning a subject at a high density in a short time using a non-diffracted beam.The ultrasonic transmission/reception device has a matrix array transducer 10 including a ...
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JP2004048543A |
To obtain a diving speech unit in which a hands-free speech can be made clearly while shortening the time occupied by speech.The diving speech unit comprises a vowel detection type automatic switching means 52 for determining voice based...
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JP2004048309A |
To inexpensively provide a radio transmitter with a simple circuit structure in which sound waves to enable transmission and reception of signals to be normally executed even when a transmitter and a receiver are fixed and even in a stat...
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JP2003310563A |
To safely and accurate transmit particularly biological data of an electrocardiograph or the like to a biological information display means (personal computer) and to transmit the data to a remote doctor terminal in a biological informat...
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JP2003298534A |
To provide a system and method for communication via medium propagation, whereby communication signals in a form of mechanical waves are transmitted from a transmitting side to a receiving side so as to achieve unidirectional or two-way ...
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JP2003218805A |
To solve the problem that the transmission efficiency of power is drastically lowered because of a deviation of the propagating axis (a misalignment factor) between a radio transmitter outside a body and a radio receiver inside the body ...
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