ULTRASONIC SIGNAL COMMUNICATION DEVICE, COMMUNICATION DEVICE, COMMUNICATION DEVICE FOR DIVERS, COMMUNICATION SYSTEM, AND COMMUNICATION METHOD
First Claim
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1. An ultrasonic signal communication device comprising:
- an ultrasonic oscillation unit that has at least two resonance frequencies according to the oscillation mode;
a transmission unit that generates a first ultrasonic signal at one of the two resonance frequencies and transmits the generated first ultrasonic signal from the ultrasonic oscillation unit; and
a reception unit that receives a second ultrasonic signal that is transmitted at the other of the two resonance frequencies from the ultrasonic oscillation unit.
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Abstract
An ultrasonic signal communication device that has an ultrasonic oscillation unit that has at least two resonance frequencies according to the oscillation mode, a transmission unit that generates a first ultrasonic signal at one of the two resonance frequencies and transmits the generated first ultrasonic signal from the ultrasonic oscillation unit, and a reception unit that receives from the ultrasonic oscillation unit a second ultrasonic signal that is transmitted at the other of the two resonance frequencies.
58 Citations
20 Claims
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1. An ultrasonic signal communication device comprising:
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an ultrasonic oscillation unit that has at least two resonance frequencies according to the oscillation mode; a transmission unit that generates a first ultrasonic signal at one of the two resonance frequencies and transmits the generated first ultrasonic signal from the ultrasonic oscillation unit; and a reception unit that receives a second ultrasonic signal that is transmitted at the other of the two resonance frequencies from the ultrasonic oscillation unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 19, 20)
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13. A communication system for communicating between a plurality of communication devices, wherein:
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one communication device comprises an ultrasonic oscillation unit that has at least two resonance frequencies according to the oscillation mode, a transmission unit that generates a first communication signal at one of the two resonance frequencies and transmits the generated first communication signal from the ultrasonic oscillation unit, and a reception unit that receives a second communication signal that is transmitted at the other of the two resonance frequencies from the ultrasonic oscillation unit; and another communication device comprises an ultrasonic oscillation unit that has at least the two resonance frequencies according to the oscillation mode, a transmission unit that generates the second communication signal at the other of the two resonance frequencies and transmits the generated second communication signal from the ultrasonic oscillation unit, and a reception unit that receives the first communication signal that is transmitted at the one of the two resonance frequencies from the ultrasonic oscillation unit. - View Dependent Claims (14, 15)
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16. A communication method comprising:
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a transmission step of generating a first communication signal and transmitting the generated first communication signal from one ultrasonic oscillation unit at one frequency of two resonance frequencies corresponding to the oscillation modes of the ultrasonic oscillation unit; and a reception step of receiving a second communication signal transmitted at the other frequency of the two resonance frequencies from the ultrasonic oscillation unit.
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17. A communication system comprising a tank communication device attached to a tank, and a divers communication device worn by a diver, wherein
the divers communication device has an ultrasonic oscillation unit that has at least two resonance frequencies corresponding to the oscillation modes; - and
a communication unit that communicates with the tank communication device using one resonance frequency of the two resonance frequencies, and communicates with another divers communication device using the other resonance frequency of the two resonance frequencies.
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18. A communication method for communicating between a divers communication device worn by one diver, a tank used by the one diver, and another divers communication device worn by another diver, wherein:
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communication with the tank uses one resonance frequency of the at least two resonance frequencies produced by an ultrasonic oscillation unit; and communication with the other divers communication device uses the other resonance frequency of the two resonance frequencies.
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Specification