Ultrasonic diagnostic apparatus
First Claim
1. An ultrasonic diagnostic apparatus for transmitting ultrasonic signals from ultrasonic transducers toward a subject to be examined, and receiving reflected waves of said ultrasonic signals for display, said ultrasonic diagnostic apparatus comprising:
- an analog switch for switching ultrasonic transducers for transmission of said ultrasonic signals and reception of said reflected waves;
a transmitter power source comprising a regulator circuit coupled to a power source for supplying a high voltage to a transmitter circuit for causing said transmitter circuit to drive said ultrasonic transducers, said regulator circuit comprising a capacitor, a diode, a resistor, a first inductor, and a second inductor, wherein the first and second inductors are configured such that the first inductor induces a voltage in the second inductor; and
a bias power source generating circuit for generating a bias power source for said analog switch from said transmitter power source.
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Accused Products
Abstract
For the purpose of reducing the size and power consumption of a power source in an ultrasonic diagnostic apparatus, charge pump circuits are connected to a transmitter power source. A regulator in the transmitter power source drives the charge pump circuit to generate a positive bias voltage +HV2 higher than a positive voltage +HV1 generated by the transmitter power source. The regulator in the transmitter power source also drives the charge pump circuit to generate a negative bias voltage −HV2 lower than a negative voltage −HV1 generated by the transmitter power source.
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Citations
20 Claims
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1. An ultrasonic diagnostic apparatus for transmitting ultrasonic signals from ultrasonic transducers toward a subject to be examined, and receiving reflected waves of said ultrasonic signals for display, said ultrasonic diagnostic apparatus comprising:
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an analog switch for switching ultrasonic transducers for transmission of said ultrasonic signals and reception of said reflected waves; a transmitter power source comprising a regulator circuit coupled to a power source for supplying a high voltage to a transmitter circuit for causing said transmitter circuit to drive said ultrasonic transducers, said regulator circuit comprising a capacitor, a diode, a resistor, a first inductor, and a second inductor, wherein the first and second inductors are configured such that the first inductor induces a voltage in the second inductor; and
a bias power source generating circuit for generating a bias power source for said analog switch from said transmitter power source. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification