Title:
ULTRASONIC WAVE EMITTING PULSE GENERATING CIRCUIT AND ULTRASONIC DIAGNOSTIC SYSTEM
Document Type and Number:
Japanese Patent JP3139982
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide the wave emitting pulse generating circuit of an ultrasonic diagnostic system generating the wave emitting pulses of wave forms such as sine wave and triangular wave in addition to rectangular wave.
SOLUTION: A driving circuit 40 boosts and drops voltage to apply to the non-contact-side terminal (a) of an ultrasonic oscillator E in an optional order by switching an optional switch for applying voltage 21 to 23 from an off state to an state while keeping a grounding switch 11 in an off state, and clips the voltage of the non-contact-side terminal (a) of the oscillator E by voltage applied to the terminal (a) of the oscillator E by means of clipping switches 32 and 33. Thereby, wave emitting pulses of wave forms such as sine wave and triangular wave can be generated. The falling of the wave emitting pulses is prevented from becoming dull.
Inventors:
Youichi Tsunoda
Application Number:
JP21937897A
Publication Date:
March 05, 2001
Filing Date:
August 14, 1997
Export Citation:
Assignee:
GE Yokogawa Medical System Co., Ltd.
International Classes:
G01N29/44; A61B8/00; G01N29/22; (IPC1-7): A61B8/00; G01N29/22
Domestic Patent References:
| JP9234202A | ||||
| JP4367655A | ||||
| JP9201359A | ||||
| JP50134133A | ||||
| JP381684A | ||||
| JP5224503A |
Attorney, Agent or Firm:
Shinshiro Arichika