ULTRASOUND DIAGNOSTIC APPARATUS
First Claim
1. An ultrasound diagnostic apparatus comprising:
- a plurality of ultrasound transducers;
transmission and reception signal lines that send transmission and reception signals for transmitting and receiving ultrasound to the plurality of ultrasound transducers;
signal determining portions that are provided close to the plurality of ultrasound transducers and determine a selection signal for selecting an ultrasound transducer to be driven or a readout signal for reading out the selection signal, the selection signal being sent out in synchronization with a transmission signal for forming the transmission and reception signal, and electrically couple the ultrasound transducer to be driven with the transmission and reception signal line in accordance with a result of the determination; and
direct current blocking/clipping circuits that are provided in the signal determining portions, block a direct current bias component superimposed on the transmission and reception signal and sent via the transmission and reception signal line, and clip a waveform with large amplitude,wherein the transmission and reception signal line sends the transmission and reception signal with the selection signal or the readout signal, andwherein the direct current blocking/clipping circuit separates and extracts the selection signal or the readout signal superimposed on the transmission and reception signal line, at a position before a signal waveform of the transmission signal.
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Accused Products
Abstract
An ultrasound diagnostic apparatus includes: transmission and reception signal lines that send transmission and reception signals of ultrasound to a plurality of ultrasound transducers; signal determining portions near the ultrasound transducers and determine a selection signal for selecting an ultrasound transducer to be driven or a readout signal for reading out the selection signal, the selection signal being sent out in synchronization with a transmission signal for forming the transmission and reception signal, and couple the ultrasound transducer to be driven with the transmission and reception signal line according to a result of the determination; and direct current blocking/clipping circuits that block a direct current bias component superimposed on the transmission and reception signal and sent via the transmission and reception signal line, and clip a waveform with large amplitude. The transmission and reception signal line sends the transmission and reception signal with the selection signal or the readout signal.
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Citations
16 Claims
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1. An ultrasound diagnostic apparatus comprising:
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a plurality of ultrasound transducers; transmission and reception signal lines that send transmission and reception signals for transmitting and receiving ultrasound to the plurality of ultrasound transducers; signal determining portions that are provided close to the plurality of ultrasound transducers and determine a selection signal for selecting an ultrasound transducer to be driven or a readout signal for reading out the selection signal, the selection signal being sent out in synchronization with a transmission signal for forming the transmission and reception signal, and electrically couple the ultrasound transducer to be driven with the transmission and reception signal line in accordance with a result of the determination; and direct current blocking/clipping circuits that are provided in the signal determining portions, block a direct current bias component superimposed on the transmission and reception signal and sent via the transmission and reception signal line, and clip a waveform with large amplitude, wherein the transmission and reception signal line sends the transmission and reception signal with the selection signal or the readout signal, and wherein the direct current blocking/clipping circuit separates and extracts the selection signal or the readout signal superimposed on the transmission and reception signal line, at a position before a signal waveform of the transmission signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An ultrasound diagnostic apparatus comprising:
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a plurality of ultrasound transducers; transmission and reception signal lines that send transmission and reception signals for transmitting and receiving ultrasound to the plurality of ultrasound transducers; and signal determining portions that are provided close to the plurality of ultrasound transducers and determine a selection signal for selecting an ultrasound transducer to be driven, the selection signal being sent out in synchronization with a transmission signal for forming the transmission and reception signal, and electrically couple the ultrasound transducer to be driven with the transmission and reception signal line in accordance with a result of the determination, wherein the signal determining portion includes;
a clipping circuit that clips a signal waveform of the transmission signal with large amplitude;
a pulse counter that counts a number of pulses for forming the selection signal for selecting the ultrasound transducer to be driven;
a judging portion that judges the ultrasound transducer to be driven using the number of the pulses counted by the pulse counter; and
a gate circuit that opens and closes by a control signal of the judgement from the judging portion to apply the transmission signal to the ultrasound transducer to be driven, andwherein the transmission and reception signal line sends the transmission and reception signal with the selection signal. - View Dependent Claims (15, 16)
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Specification