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JPH09312717A |
To provide the information processing system by which data are transferred at a high speed. When an original reader 11 reads an image of an original 14, the read data are converted into binary image data consisting of '1s' and '0s' and o...
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JPH09276432A |
To provide a flow controller by sound wave communication using pressure wave with which a signal is transmitted with fluid such as water flowing through the supply path of a fire pump, etc., as a medium and flow requested from plural sup...
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JPH09273682A |
To prevent decreasing of a sound wave signal receiving level by fixing a lining plate of low elastic coefficient having a specific acoustic impedance to an internal peripheral surface of a press mounted metal fitting, in a device interpo...
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JPH09247100A |
To reduce power consumption in a submarine station in an underwater data communication equipment. The transmitter/receiver 11 of a marine station 1 converts an observation signal S5 from the submarine station 2 into a reception signal S1...
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JPH09509116A |
Waterborne acoustic signals are received and processed into electrical driver signals to energize a transducer held in selectively controllable vibration-transmitting engagement with a tooth of an underwater diver. The transducer convert...
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JPH09509252A |
(57) [Summary] A versatile device for connecting acoustic and ultrasonic transducers to circuits for high resolution distance and motion measurement and bidirectional communication. The generator signal (52) is synchronized with the rece...
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JPH09233032A |
To allow a remote monitor to control a probe transmission level, a probe reception gain and a probe information transmission level of the underwater probe to be respectively a proper value. An underwater probe transmitter 6 and a probe i...
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JPH09200868A |
To provide a communication system by which stable communication is attained without the need for wiring in a multiple dwelling house, the base station and the meter used for the system. A center 1 sends a text for automatic metering or t...
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JPH09189764A |
To lessen the work for preventing generation of mutual interference by transmitting a signal at a predetermined transmission period depending on an identification code affixed to a radio signal and discarding the signal on the receiving ...
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JPH09189765A |
To reduce the probability of display error being generated due to mutual interference of transmission signals by decimating a fish finding data corresponding to a display range at a preset rate and then delivering a processed transmissio...
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JPH09135212A |
To provide a directivity sensing function to a transducer by mounting removably an ultrasonic wave horn with a sharp directivity whose half value angle is a specific value or below to the ultrasonic wave underwater communication equipmen...
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JPH09135211A |
To perform an operation while easily providing a mount position by arraying transmission equipment and reception equipment so that they can orthogonalize, and calculating the coordinates of X-and Y-axes while using the relative phase dif...
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JPH09127236A |
To enhance the detection accuracy by arranging the receivers such that the central axes thereof are directed radially. A receiver array 10 comprises receivers 501-508 for converting a sound wave W into an electrical signal and exhibiting...
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JPH0961409A |
To improve the ratio of the signal and noise of receiving signal by a means integrating the receiving signal rotated in phase and a means setting the integrated signal to a single frequency band. Adders 161-16p add mutual receiving signa...
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JP2577270B2 |
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JPH08303843A |
PURPOSE: To simplify a work to set an address to each apparatus on the air-conditioning zone side during arrangement of a large scale air-conditioning device constituted in a manner that communication between the centralized controller o...
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JPH08303838A |
PURPOSE: To perform communication between a controller on the centralized control part arranged in a management room and a controller for an apparatus on the air- conditioning zone side in a number of air-conditioning zones without a sig...
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JPH08307363A |
PURPOSE: To reduce the quantity of construction for communication facilities and the cost of this communication system. CONSTITUTION: The communication system is provided with 1st and 2nd active noise eliminating devices 7A, 7B for gener...
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JPH08274723A |
To match a cursor on a display menu with a pointing coordinate of set point by detecting the intensity and a phase difference of signals from an ultrasonic wave reception sensor so as to calculate an absolute coordinate. An ultrasonic wa...
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JP2540022B2 |
PURPOSE: To provide an equipment and a method for communicating information from a transmission origin to a destination without the need of blinking a light source. CONSTITUTION: A processor 12 communicates with a transceiver 14, is prov...
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JPH08195998A |
PURPOSE: To provide a highly efficient, small-sized, light-weight, rugged and inexpensive portable ultrasonic underwater sensor. CONSTITUTION: A cylinder 24 and a conical base 25 are axially symmetrically and integrally formed for a hous...
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JPH08167924A |
PURPOSE: To obtain a wireless transmitter-receiver giving less effect on a radio equipment sending/receiving a speech voice without holding the main telephone set. CONSTITUTION: The main telephone set 1 is provided with an ultrasonic wav...
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JPH08102989A |
PURPOSE: To easily attain underwater talking by multiplying an output voice frequency of a microphone provided in an aspiration regulator with a multiple, amplifying the voice signal and providing the amplified signal via an underwater s...
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JPH0851404A |
PURPOSE: To provide an underwater acoustic communication echo sounder transducer inside a pipe with high performance which can prevent noise and the increase of pressure loss in a water feeding pipe. CONSTITUTION: A system for executing ...
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JPH0812648B2 |
PURPOSE:To prevent an information processor from the influence of electromagnetic disturbance by using physical oscillation to input information to the processor. CONSTITUTION:A driving circuit 6 drives an oscillator 4 by an electric sig...
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JPH083077Y2 |
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JPH088840A |
PURPOSE: To realize the underwater communication equipment and the talk mouth in which talking is made available without losing the pleasantness and safety of scuba diving and the operability is improved with respect to the underwater co...
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JPH088839A |
PURPOSE: To realize the transmitter, the receiver and the transmitter-receiver in which interference is easily avoided with respect to the transmitter, the receiver and the transmitter-receiver. CONSTITUTION: This transmitter-receiver is...
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JPH07327992A |
PURPOSE: To provide an ultrasonic diagnostic device having wide band of a reception signal and high S/N. CONSTITUTION: A tuning circuit is constituted of a capacitance component C interposed between a vibrator 10 and a preamplifier 18 an...
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JPH07289990A |
PURPOSE: To simplify the constitution and improve the frequency resolution and response. CONSTITUTION: A variable frequency oscillator 1 is provided with a pulse width voltage converting means 13 outputting a d.c. voltage VIN accordance ...
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JPH07288505A |
PURPOSE: To remove an error source by generating a pressure pulse as a programmed and specified bit pattern on the side of transmitter and achieving unidirectional or bidirectional alphanumeric communication. CONSTITUTION: A bidirectiona...
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JPH07264691A |
PURPOSE: To reduce the noise generated due to direct exposure of a wave receiving element to the flow by selectively receiving the frequency component for communication by using the resonance phenomena. CONSTITUTION: The device looks lik...
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JPH07253793A |
PURPOSE: To allow the direction of a sound wave beam not to be changed even when an under water transmitting equipment is inclined from a prescribed posture. CONSTITUTION: An inclination sensor 1 is provided on the under water transmitti...
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JPH07209403A |
PURPOSE: To surely confirm at least the two-dimensional direction from a slave machine side (diving worker) to a master machine side (transmitting source) by a simple means. CONSTITUTION: Three microphones 10, 11, 12, three wave detector...
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JPH07202762A |
PURPOSE: To attain stable and sure communication by providing a specific transmitter and a specific receiver respectively to the system and to attain signal transmission in a pipeline such as a dust transport pipe in which the installati...
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JPH07203007A |
PURPOSE: To provide a hand-free telephone set which can satisfactorily suppress the howling and echoes even in a large acoustic reflection environment produced in a bathroom. CONSTITUTION: A speaker/microphone part 200 includes a digital...
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JPH0771044B2 |
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JPH07107049A |
PURPOSE: To provide a MODEM usable even underwater by housing an ultrasonic wave transmitter-receiver for converting electric signals to ultrasonic waves, originating them, receiving the ultrasonic waves and converting them to the electr...
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JPH0734599B2 |
A cellular system employs a subaudible signalling control protocol. The protocol includes transmitting supervisory related signals between the radiotelephone and one of the cell sites at a first subaudible digital bit rate, and transmitt...
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JPH0715218Y2 |
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JPH0731245B2 |
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JPH0727023B2 |
PCT No. PCT/JP89/00910 Sec. 371 Date Apr. 27, 1990 Sec. 102(e) Date Apr. 27, 1990 PCT Filed Sep. 4, 1989 PCT Pub. No. WO90/02958 PCT Pub. Date Mar. 22, 1990.The present invention relates to an underwater detection system which radiates u...
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JPH0746656A |
PURPOSE: To easily specify a report originating position by providing a transmitter for transmitting sound waves modulated by an identification code, a receiver for outputting sound pressure data and the identification code and a positio...
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JPH076599B2 |
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JPH06101692B2 |
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JPH06326669A |
PURPOSE: To provide an ultrasonic communication equipment for propagating ultrasonic vibration to the pipe wall of a pipe and performing communication at the optional position of the pipe. CONSTITUTION: A first ultrasonic communication e...
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JPH0683147B2 |
An underwater communication system of the present invention comprises a transmitter including message inputting means having keys, each being assigned to each word, code converting means for converting a key input entered through the inp...
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JPH06233376A |
PURPOSE: To improve the estimated accuracy of vibration noise and to enhance the noise reduction effect by adopting the system to detect all vibrations propagated from all vibration sources to a frame installing point of the wave receive...
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JPH0659043B2 |
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JPH06132907A |
PURPOSE: To provide an intra-duct signal transmission method/device which transmits the signals by using the water flowing in a duct as a transmitting medium and improves the transmitting/receiving precision and reliability regardless of...
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