ULTRASONIC DEVICE
An ultrasonic apparatus (100) includes an ultrasonic transducer (120), a transmitting circuit (110), a receiving circuit (140), a Q-factor measuring circuit (210), and a frequency measuring circuit (250). The ultrasonic transducer is a three-terminal ultrasonic transducer that includes a transmittin...
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| creator | NAKAO, Motoyasu WATANABE, Kosuke |
| description | An ultrasonic apparatus (100) includes an ultrasonic transducer (120), a transmitting circuit (110), a receiving circuit (140), a Q-factor measuring circuit (210), and a frequency measuring circuit (250). The ultrasonic transducer is a three-terminal ultrasonic transducer that includes a transmitting electrode (121), a receiving electrode (122), and a common electrode (123). The transmitting circuit outputs a driving signal to the transmitting electrode to cause the ultrasonic transducer to transmit ultrasonic waves. The receiving circuit receives a receive signal from the receiving electrode. The frequency measuring circuit measures a resonant frequency of the ultrasonic transducer from a reverberation signal in the receive signal. The Q-factor measuring circuit measures a Q factor of the ultrasonic transducer from the reverberation signal in the receive signal. |
| format | Patent |
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The ultrasonic transducer is a three-terminal ultrasonic transducer that includes a transmitting electrode (121), a receiving electrode (122), and a common electrode (123). The transmitting circuit outputs a driving signal to the transmitting electrode to cause the ultrasonic transducer to transmit ultrasonic waves. The receiving circuit receives a receive signal from the receiving electrode. The frequency measuring circuit measures a resonant frequency of the ultrasonic transducer from a reverberation signal in the receive signal. The Q-factor measuring circuit measures a Q factor of the ultrasonic transducer from the reverberation signal in the receive signal.</description><language>eng ; fre ; ger</language><subject>ANALOGOUS ARRANGEMENTS USING OTHER WAVES ; DEAF-AID SETS ; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES ; ELECTRIC COMMUNICATION TECHNIQUE ; ELECTRICITY ; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES ; LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS ; MEASURING ; PHYSICS ; PUBLIC ADDRESS SYSTEMS ; RADIO DIRECTION-FINDING ; RADIO NAVIGATION ; TESTING</subject><creationdate>2019</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20191204&DB=EPODOC&CC=EP&NR=3576429A1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76290</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20191204&DB=EPODOC&CC=EP&NR=3576429A1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>NAKAO, Motoyasu</creatorcontrib><creatorcontrib>WATANABE, Kosuke</creatorcontrib><title>ULTRASONIC DEVICE</title><description>An ultrasonic apparatus (100) includes an ultrasonic transducer (120), a transmitting circuit (110), a receiving circuit (140), a Q-factor measuring circuit (210), and a frequency measuring circuit (250). The ultrasonic transducer is a three-terminal ultrasonic transducer that includes a transmitting electrode (121), a receiving electrode (122), and a common electrode (123). The transmitting circuit outputs a driving signal to the transmitting electrode to cause the ultrasonic transducer to transmit ultrasonic waves. The receiving circuit receives a receive signal from the receiving electrode. The frequency measuring circuit measures a resonant frequency of the ultrasonic transducer from a reverberation signal in the receive signal. The Q-factor measuring circuit measures a Q factor of the ultrasonic transducer from the reverberation signal in the receive signal.</description><subject>ANALOGOUS ARRANGEMENTS USING OTHER WAVES</subject><subject>DEAF-AID SETS</subject><subject>DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES</subject><subject>ELECTRIC COMMUNICATION TECHNIQUE</subject><subject>ELECTRICITY</subject><subject>LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES</subject><subject>LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS</subject><subject>MEASURING</subject><subject>PHYSICS</subject><subject>PUBLIC ADDRESS SYSTEMS</subject><subject>RADIO DIRECTION-FINDING</subject><subject>RADIO NAVIGATION</subject><subject>TESTING</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2019</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZBAM9QkJcgz29_N0VnBxDfN0duVhYE1LzClO5YXS3AwKbq4hzh66qQX58anFBYnJqXmpJfGuAcam5mYmRpaOhsZEKAEA7lodfA</recordid><startdate>20191204</startdate><enddate>20191204</enddate><creator>NAKAO, Motoyasu</creator><creator>WATANABE, Kosuke</creator><scope>EVB</scope></search><sort><creationdate>20191204</creationdate><title>ULTRASONIC DEVICE</title><author>NAKAO, Motoyasu ; WATANABE, Kosuke</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_EP3576429A13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; fre ; ger</language><creationdate>2019</creationdate><topic>ANALOGOUS ARRANGEMENTS USING OTHER WAVES</topic><topic>DEAF-AID SETS</topic><topic>DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES</topic><topic>ELECTRIC COMMUNICATION TECHNIQUE</topic><topic>ELECTRICITY</topic><topic>LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES</topic><topic>LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS</topic><topic>MEASURING</topic><topic>PHYSICS</topic><topic>PUBLIC ADDRESS SYSTEMS</topic><topic>RADIO DIRECTION-FINDING</topic><topic>RADIO NAVIGATION</topic><topic>TESTING</topic><toplevel>online_resources</toplevel><creatorcontrib>NAKAO, Motoyasu</creatorcontrib><creatorcontrib>WATANABE, Kosuke</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>NAKAO, Motoyasu</au><au>WATANABE, Kosuke</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>ULTRASONIC DEVICE</title><date>2019-12-04</date><risdate>2019</risdate><abstract>An ultrasonic apparatus (100) includes an ultrasonic transducer (120), a transmitting circuit (110), a receiving circuit (140), a Q-factor measuring circuit (210), and a frequency measuring circuit (250). The ultrasonic transducer is a three-terminal ultrasonic transducer that includes a transmitting electrode (121), a receiving electrode (122), and a common electrode (123). The transmitting circuit outputs a driving signal to the transmitting electrode to cause the ultrasonic transducer to transmit ultrasonic waves. The receiving circuit receives a receive signal from the receiving electrode. The frequency measuring circuit measures a resonant frequency of the ultrasonic transducer from a reverberation signal in the receive signal. The Q-factor measuring circuit measures a Q factor of the ultrasonic transducer from the reverberation signal in the receive signal.</abstract><oa>free_for_read</oa></addata></record> |
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| language | eng ; fre ; ger |
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| subjects | ANALOGOUS ARRANGEMENTS USING OTHER WAVES DEAF-AID SETS DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS MEASURING PHYSICS PUBLIC ADDRESS SYSTEMS RADIO DIRECTION-FINDING RADIO NAVIGATION TESTING |
| title | ULTRASONIC DEVICE |
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