Communications – electrical: acoustic wave systems and devices – Signal transducers – Underwater type
Reexamination Certificate
2011-08-30
2011-08-30
Alsomiri, Isam (Department: 4132)
Communications, electrical: acoustic wave systems and devices
Signal transducers
Underwater type
C367S099000, C367S152000, C367S165000
Reexamination Certificate
active
08009518
ABSTRACT:
An ultrasonic sensor includes a transmitting device, receiving devices arranged in an array, and a circuit device. One receiving device is configured as a reference receiving device. The circuit device includes a reference signal generator and first and second synchronous detectors. The reference signal generator generates a reference signal by using a received signal of the reference receiving device. The first synchronous detector performs synchronous detection of a received signal of one of the receiving devices based on the reference signal to detect a distance to an object. The second synchronous detector performs synchronous detection of received signals of the receiving devices except the reference receiving device based on the reference signal to detect a direction of the object.
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Kojima Kiyonari
Oda Teruo
Okuda Yasuyuki
Yamanaka Akitoshi
Alsomiri Isam
Denso Corporation
Hulka James
Nippon Soken Inc.
Posz Law Group , PLC
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