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WO/2000/013329A1 |
A personal communications apparatus comprises a first part, having a microphone (114), and a second part, having a loudspeaker (118). The first part is adapted to be worn on a user's wrist (202) and the second part is adapted to be worn ...
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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...
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WO/2000/008438A1 |
When a pipeline is used as a medium for data transmission using a VLF or ELF Electro-magnetic signal the presence of corrosion effects on the pipeline lead to noise signals appearing in the received data signal. The present invention rel...
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WO/1999/037044A1 |
A data transmission system for use in extracting data from a downhole location in a well is disclosed. The well has electrically conductive downhole structure (2, C) which together with an earth return forms a signal circuit which is use...
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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...
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WO/1999/025070A2 |
A communication system for use with a device located within a containment vessel, comprises a control unit having means providing two-way packet radio frequency communication; a command unit for attachment to a device in a vessel and hav...
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WO/1999/019751A1 |
A drill stem communication system for transmitting data between downhole and uphole locations in a borehole includes at least one transducer (40, 40') at a first location on a drill stem (18) for modulating motion and/or stress in the dr...
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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...
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WO/1998/051025A1 |
A biological function assisting means (1) is buried in the body of an organism and has a transmitter (11) and a receiver (12) for the communication with an external control means (2). The external control means (2) controls the biologica...
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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 ...
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WO/1998/023849A1 |
The application discloses a method of receiving data from a sensor associated with a drill string the sensor and drill string, being located in a borehole or the like, the method comprises: supplying an electrical signal to the drill str...
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WO/1998/013960A2 |
A pipeline communication system employs the pipeline (10) and the adjacent ground and includes branches with junctions (11 and 12). Governor modules (14) and transformer/rectifiers form part of the network. Monitors (16, 17 and 18) perio...
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WO/1997/035388A1 |
A method and apparatus are disclosed for controlling the quantum state probability distribution of one quantum object (S2 or I1) of a pair of correlated quantum objects (S1 and I1, or S2 and I2), which include providing a pair of correla...
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WO/1997/031438A1 |
A telemetry method for a metal structure (19) protected from oxidation by current tapping (1, 2). The method uses the structure (19) itself as the medium for data transmission from at least one transmitter connected to the structure, sai...
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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...
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WO/1996/036134A1 |
A wireless system includes a transmitter (14) and a receiver (22) that are coupled through a user (10) and room ground (11). The transmitter produces low-frequency, low power signals that, through capacitive coupling, pass as displacemen...
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WO/1996/023373A1 |
Audio apparatus comprises a base unit including circuitry for generating electrical signals representing sounds and at least one earphone adapted to receive the electrical signals and to reproduce sounds represented by the signals, in wh...
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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...
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WO/1995/017797A1 |
The invention relates to communications technology, more specifically, to the transmission of information, especially over long and ultra-long distances. According to the invention, the transmission of information involves the creation o...
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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...
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WO/1993/026115A2 |
A sub-sea oil pipeline installation comprising a production platform (10) and sub-sea facilities (15) at a plurality of wellheads (16), has a data transmission system by which data is transmitted in either direction between the master pl...
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WO/1991/011061A1 |
A system for communication between two stations, at least one of which is mobile, intended in particular for communication in a marine environment between an autonomous underwater vehicle (1) and a surface vehicle (2). The system include...
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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...
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WO/1987/003154A1 |
An optical underwater communicator for a diver for transmitting and receiving vocal communications by modulated infrared light. A face mask (34) defines an air envelope covering a portion of the divers's face. A microphone (88) converts ...
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WO/1979/000462A1 |
A method and an arrangement for reducing the demand on the number of transferred bits when transferring PCM information. Polarity and amplitude information are transmitted from a transmitter side to a receiver side, expressed by binary c...
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JP7444255B2 |
An aspect of the present disclosure is a biosensor information collection system S including: a biosensor terminal 1-N that is to be attached to a living body and outputs sensor information on the living body; a hub terminal 2 that is to...
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JP7422987B1 |
An object of the present invention is to enable communication using a curing sheet as a communication medium using a signal transmission device. [Solution] A communication line arranged in a curing sheet is used as a transmission medium ...
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JP7421304B2 |
A wireless communication apparatus may include: an oscillator including a coil assembly exposed to an outside of the wireless communication apparatus, a variable capacitor, and a negative resistor; and a phase locking circuit connected t...
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JP7383934B2 |
A signal transmission device includes a first antenna, a second antenna, a demodulation device, and a fixing member. The first antenna transmits radio waves containing a signal modulated at a first frequency. The second antenna receives ...
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JP2023143443A |
To provide an authentication system capable of safely and appropriately performing biometric authentication.An authentication system of the present invention has: a biological information storage unit 20 provided with an authentication i...
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JP2023140237A |
To realize an electromagnetic wave transmission sheet that can input and output electromagnetic waves on both sides.An electromagnetic wave transmission sheet includes a 5-layer laminated structure in which a first mesh layer 1, a first ...
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JP2023139824A |
To realize an electromagnetic wave transmission sheet that can easily radiate electromagnetic waves.An electromagnetic wave transmission sheet includes a dielectric layer 1 made of a dielectric, a conductor layer 2 provided on one side o...
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JP7348172B2 |
This communication device is provided with a receiving unit, a determination unit and a band control unit. The receiving unit receives a wireless signal which includes signals of multiple, mutually different communication systems. On the...
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JP7329854B2 |
The invention is to provide an underwater communication device and an underwater communication method that can be applied to mobile communication in water. An underwater communication device 10 includes: a transmitter 12 configured to tr...
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JP2023104013A |
To provide a urination detection device using an electromagnetic induction method between a passive detection tag including a coil and a capacitor and an antenna.In an urination detection device that detects an electromagnetic induction ...
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JP2023103085A |
To provide a device capable of achieving wireless communication underwater.An underwater wireless communication device includes a host device 1 configured to transmit radio waves and an underwater device 2 configured to receive the radio...
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JP2023103084A |
To provide a device capable of achieving radio communication underwater.An underwater radio communication device includes a host device 1 and an underwater device 2 that transmit and receive radio waves. The underwater device 2 includes:...
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JP7311799B2 |
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JP7294810B2 |
Ingestible bio-telemetry communication network and associated systems are described. The communication network can include one or more ingestible bio-telemetry tags; and a reader, wherein each of the one or more ingestible bio-telemetry ...
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JP2023076870A |
To perform CIR measurement in a short time.A transmitter 10 comprises a plurality of echo sounder transmitters 11, and a control unit 13 for causing the plurality of echo sounder transmitters 11 to transmit a signal per echo sounder tran...
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JP2023075697A |
To reduce the energy loss during signal transmission via a dielectric waveguide.A signal transmission system 1a has: circuit boards 10A, 10B; semiconductor packages 12A, 12B including an RF circuit, mounted on the circuit boards 10A, 10B...
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JP2023075598A |
To achieve proper wireless communication.A wearable article 200 includes a main body portion 210 and a conductive member 220. The main body portion 210 has a shape corresponding to part of a user's body. The conductive member 220 is a me...
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JP7268786B1 |
A power consumption of a sensor node is reduced while dealing with the problem of interference. A communication system includes a plurality of sensor nodes and a master node that performs underwater acoustic communication with each of th...
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JP2023047752A |
To allow large capacity data communication to be stably performed at high speed in a wide range such as in the sea.A wireless data transmission system includes: N (N is an integer of two or more) transmission coils that have opening surf...
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JP7227232B2 |
There is provided a wearable device operable to determine an orientation of the wearable device, when placed on a body. The wearable device comprises a plurality of electrode pairs located at different positions. At least two of the plur...
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JP7220877B2 |
Electric field communication that adopts a metal as a communication medium is performed. An electric field communication system communicating through an electric field, includes: a communication medium made of a material capable of trans...
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JP2023016689A |
To provide a radio wave transmitting device and a wireless communication system capable of suppressing attenuation of a high-frequency signal due to dielectric loss and efficiently transmitting radio waves, even when a dielectric loss ta...
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JP7202025B2 |
In a described embodiment, a sensor-based communication apparatus (100) is disclosed. The communication apparatus (100) comprises a plurality of sensor nodes (112) associated with respective unique pulse signatures (200) and adapted to c...
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JP2022553405A |
TECHNICAL FIELD The present invention relates to a speaker automatic utterance control method using human body communication and a wearable device for performing the method. obtaining situation information including data about the surrou...
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JP7169281B2 |
[Problem] To enable transmission and reception of a signal along an electric wire or a cable without requiring a separate signal wire for the transmission and reception of the signal, while reducing influence on other devices or componen...
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