Ultrasonic transmitting and receiving apparatus
First Claim
1. An ultrasonic transmitting and receiving apparatus comprising:
- an ultrasonic probe including ultrasonic transducers for transmitting ultrasonic waves to an object to be inspected according to plural drive signals and receiving ultrasonic echoes reflected from the object to output plural reception signals, respectively;
drive signal generating means for generating plural drive signals for simultaneously transmitting from said ultrasonic probe in plural directions plural kinds of ultrasonic beams corresponding to plural kinds of spread spectrum signals obtained by adding frequency components, which have been discretely selected from among plural frequency components having different center frequencies in a transmission band, to each other at a predetermined rate; and
reception side signal processing means for performing signal processing on the plural reception signals respectively outputted from said plural ultrasonic transducers and performing plural kinds of phase matching so as to form plural reception focal points corresponding to a number of ultrasonic beams transmitted from said ultrasonic probe based on the plural reception signals which have been subjected to the signal processing.
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Accused Products
Abstract
An ultrasonic transmitting and receiving apparatus in which scanning time is shortened by simultaneously transmitting plural ultrasonic beams in plural directions and separation among the plural ultrasonic beams is improved. The ultrasonic transmitting and receiving apparatus includes: an ultrasonic probe including plural ultrasonic transducers; a drive signal generating unit for generating plural drive signals for simultaneously transmitting in plural directions plural kinds of ultrasonic beams corresponding to plural kinds of spread spectrum signals obtained by adding at a predetermined rate frequency components which have been discretely selected from among plural frequency components having different center frequencies; and a reception side signal processing unit for performing plural kinds of phase matching so as to form plural reception focal points corresponding to a number of transmitted ultrasonic beams based on plural reception signals.
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Citations
9 Claims
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1. An ultrasonic transmitting and receiving apparatus comprising:
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an ultrasonic probe including ultrasonic transducers for transmitting ultrasonic waves to an object to be inspected according to plural drive signals and receiving ultrasonic echoes reflected from the object to output plural reception signals, respectively;
drive signal generating means for generating plural drive signals for simultaneously transmitting from said ultrasonic probe in plural directions plural kinds of ultrasonic beams corresponding to plural kinds of spread spectrum signals obtained by adding frequency components, which have been discretely selected from among plural frequency components having different center frequencies in a transmission band, to each other at a predetermined rate; and
reception side signal processing means for performing signal processing on the plural reception signals respectively outputted from said plural ultrasonic transducers and performing plural kinds of phase matching so as to form plural reception focal points corresponding to a number of ultrasonic beams transmitted from said ultrasonic probe based on the plural reception signals which have been subjected to the signal processing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification