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JPS6451339U |
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JPS6482830A |
PURPOSE: To easily attain a calling even during the underwater work apt to restrict an action by attaining a calling and a talking only by operating one push-button switch at the time of the underwater work such as scuba diving. CONSTITU...
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JPH0115239B2 |
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JPS6465939A |
PURPOSE: To transmit the data of a sensor in a banked earth without interrupting the cruise of a ship and without being attracted in the banked earth, by providing a protecting tube concentrically around the outer periphery of a metal ro...
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JPS6453641A |
PURPOSE: To always execute the satisfactory underwater communication by delaying the same signal as the signal received from a transmitting side for a certain time, re-sending it from a receiving side and turning the wavefront of a trans...
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JPS6436132A |
PURPOSE: To warn a danger of a disaster underwater by including an audible speech generating device, a power supply source, and an operation switch for connecting the audible speech generating device and the power supply source together....
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JPS6427331A |
PURPOSE: To eliminate the need for a wire cord between locations where a signal is transmitted and received and to facilitate the extension by using a pipe or fluid in the piping as a propagation medium of an ultrasonic wave and transmit...
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JPS6415444U |
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JPS64621Y2 |
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JPS6367153B2 |
PURPOSE:To obtain a normal data even in case when a receiving signal is varied instantaneously, by comparing a pseudo pulse generated at the time of a peak of a normal receiving ultrasonic wave, with a zero crossing pulse generating time...
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JPS63200069U |
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JPS6359289B2 |
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JPS63272134A |
PURPOSE: To attain the continuous call of a question and an answer without effecting a transportation means for the receiving of an answer signal by making a power transportation signal and the answer signal from a responder into a trans...
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JPS63269635A |
PURPOSE: To attain underwater transmission/reception simply and accurately by adopting communication under water through an ultrasonic wave transmission medium, receiving a coded signal corresponding to a message at a message destination...
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JPS6355835B2 |
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JPS63262927A |
PURPOSE: To eliminate a communication error due to echo noise, by comparing the output of a signal detection circuit with that of a pseudo noise detection circuit, and outputting a reception signal when the amplitude of the output of the...
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JPS63152344U |
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JPS6348461B2 |
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JPS63227140A |
PURPOSE: To reduce the influence of underwater noise by sending out an ultrasonic signal obtained by applying a sound signal with analog modulation, into the water, and providing a level deciding means for a received demodulating signal ...
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JPS63140758U |
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JPS63502379A |
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...
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JPS63208334A |
PURPOSE: To attain the formation of a sharp beam and accurate synchronization holding with a simple means by utilizing parametric transmission/reception as a data communication means and using one wave in primary waves as a timing signal...
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JPS63123638U |
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JPS6336198B2 |
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JPS63106214U |
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JPS63102343U |
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JPS63151128A |
PURPOSE: To always perform distinct underwater communication by automatically switching an upper transmitter-receiver and a lower transmitter-receiver and automatically selecting and using the lower transmitter-receiver when a submergibl...
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JPS63151133A |
PURPOSE: To transmit data most suitably whether the transmission distance is long or shorter, by changing the data transmission speed in accordance with the transmission distance. CONSTITUTION: A depth sensor 11 detects the depth under t...
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JPS6322778Y2 |
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JPS63136845A |
PURPOSE: To inform a reception by lighting an LED even if voices are not heard because of breathing sounds with a regulator, etc., by setting an indicator which informs the reception in a vision at the time of wearing a mask. CONSTITUTIO...
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JPS63136842A |
PURPOSE: To execute a secure communication by transmitting a code corresponding to a switch input plural times to one switch input. CONSTITUTION: By operating a switch 1 an encoder circuit 3 is made to be started so as to generate a sign...
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JPS63136844A |
PURPOSE: To smoothly execute a communication among more than three persons by transmitting a transmitting person code, which is previously set, with a voice code and expressing the transmitting person in a voice on a reception side. CONS...
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JPS63136843A |
PURPOSE: To enable a stable communication which is strong against a disturbance by providing an oscillator which oscillates in plural frequencies corresponding to the input of a switch in a transmission part and outputting a correspondin...
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JPS63136841A |
PURPOSE: To facilitate a wireless communication between divers each other or between a diver and a person on a ship by outputting a voice corresponding to a switch input from a voice synthesizing circuit previously storing the voice, tra...
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JPS63136840A |
PURPOSE: To easily execute a wireless communication between scuba divers each other or between a scuba diver and a mother ship by modulating code information corresponding to a switch input to transmit as an ultrasonic signal and demodul...
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JPS6383669U |
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JPS6378448U |
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JPS6314510Y2 |
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JPS6376632A |
PURPOSE: To surely attain the data transmission with high S/N by converting a signal to be transmitted to an ultrasonic wave, and propagating and transmitting it in a fluid in an underground cavity. CONSTITUTION: In the internal cavity o...
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JPS6372231A |
PURPOSE: To attain data communication at high speed for a short range by using an ultrasonic wave as a communication medium and using a horn having a proper directivity angle. CONSTITUTION: An ultrasonic wave frequency being a carrier is...
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JPS6313701B2 |
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JPS6321197U |
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JPS635598U |
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JPS62299198A |
PURPOSE: To identify various signal contents transmitted with an ultrasonic microphone by providing a control circuit to amplitude-modulate two optional frequencies in the unstable multivibrator of plural oscillating frequencies. CONSTIT...
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JPS62295531A |
PURPOSE: To attain broad band independently of the adoption of special structure by setting one resonance frequency of electroacoustic converters of transmission and reception systems to the upper limit frequency of the transmission band...
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JPS62262520A |
PURPOSE: To surely receive required information automatically by providing an automatic changeover section giving an ultrasonic wave reception output to a sound output section in place of a radio reception output in receiving an ultrason...
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JPS62260441A |
PURPOSE: To attain wireless communication between scuba divers and between scuba divers and ships by providing a small mode switch or a small keyboard on the end of a transmitter, and a sound synthesizer and bone conduction earphones on ...
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JPS62258529A |
(57)【要約】 本公報は電子出願前の出願データであるため
要約のデータは記録されません。
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JPS62252228A |
PURPOSE: To enable an equipment to be miniaturized, to be set in a portable shape, and to be fitted for transmission/reception at a narrow band area, by connecting a circuit that outputs a signal in which an audible frequency signal is m...
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JPS62245743A |
PURPOSE: To offer the response not causing waveform distortion while attenuating possibly ringing by specifying a time constant of a closed circuit comprising an externally mounted impedance and a restrictive capacitance of an output tra...
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