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    • 3. 发明授权
    • Arrhythmia detector
    • ARRHYTHMIA检测器
    • US3677260A
    • 1972-07-18
    • US3677260D
    • 1970-09-04
    • STATHAM INSTRUMENT INC
    • FUNFSTUCK HORSTELAZAR SHMUEL
    • A61B5/0468A61B5/04
    • A61B5/0468
    • This application relates to means for measuring and recording variations in frequency of repetitive events which may be subject to large changes in frequency and is particularly useful in connection with the measuring and recording of the frequency of ectopic heartbeats. This is accomplished by generating the train of pulses responsive to the frequency of the events of interest, establishing a potential responsive to the frequency of said train of pulses, generating a linear sawtooth pulse whose amplitude is responsive to the frequency of the applied pulses and comparing said amplitude of said sawtooth pulse with a reference potential, establishing the difference between the amplitude potential and said reference potential, means responsive to said difference to indicate the frequency of the pulses resulting in said difference whose magnitude varies from that resulting from a predetermined variation of the frequency of said repetitive events.
    • 本申请涉及用于测量和记录重复事件的频率变化的装置,其可能经历频率的大的变化,并且在测量和记录异位心跳的频率方面特别有用。 这是通过产生响应于感兴趣事件的频率的脉冲序列来建立的,响应于所述脉冲串的频率建立一个电位,产生其幅度响应所施加的脉冲的频率的线性锯齿波脉冲,并且比较 所述具有参考电位的所述锯齿波脉冲的振幅建立所述振幅电位和所述参考电位之间的差值,这意味着响应于所述差值来指示脉冲的频率,导致所述差值的大小与预定变化 所述重复事件的频率。
    • 4. 发明授权
    • Cardiac tachometer
    • CARDIAC测速仪
    • US3675643A
    • 1972-07-11
    • US3675643D
    • 1970-09-04
    • STATHAM INSTRUMENT INC
    • FUNFSTUCK HORSTELAZAR SHMUEL
    • A61B5/0245A61B5/04
    • A61B5/0245
    • This application relates to means for measuring and recording the frequency of repetitive events which may be subject to large changes in frequency, and is particularly useful in connection with the measuring and recording of heartbeats. This is accomplished by generating a train of pulses responsive to events of interest, establishing a dc potential responsive to the frequency of said train of pulses, generating a linear sawtooth pulse whose amplitude is responsive to the frequency of the applied pulses and to said dc potential, comparing said amplitude of said sawtooth pulses with a reference voltage, and modifying said dc potential responsive to the difference between said reference voltage and said sawtooth pulse amplitude, and providing means responsive to the magnitude of said dc potential to indicate the frequency of the pulses of interest.
    • 本申请涉及用于测量和记录重复事件的频率的装置,其可能经历频率的大的变化,并且在测量和记录心跳方面特别有用。 这通过产生响应感兴趣事件的一串脉冲来实现,响应于所述脉冲串的频率建立直流电位,产生其幅度响应所施加的脉冲的频率和所述直流电位的线性锯齿波脉冲 将所述锯齿波脉冲的所述振幅与参考电压进行比较,以及响应于所述参考电压和所述锯齿波脉冲振幅之间的差异来修改所述直流电位,以及响应所述直流电位的大小来指示所述脉冲的频率 出于兴趣。