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1. 发明授权

US4019419A Tuning device 失效
标题翻译：调谐装置
公开(公告)号：US4019419A
公开(公告)日：1977-04-26
申请号：US580789
申请日：1975-05-27
申请人： Haruzo Yoshikawa , Keiji Shimano , Noritoshi Oishi
发明人： Haruzo Yoshikawa , Keiji Shimano , Noritoshi Oishi
IPC分类号： G01H3/00 , G10G7/02
CPC分类号： G10G7/02
摘要： A tuning device for musical instruments or voices comprises a visual stroboscopic displaying means which displays a light flow at a speed proportional to the difference of a tone to be tuned from the signal of the corresponding standard pitch. A standard pitch in a predetermined octave is synthesized from pulses generated by a high frequency oscillator the standard pitch and is divided into a pitch in a predetermined lower octave for comparing the tone to be tuned in the stroboscopic displaying means. The tone to be tuned is also divided into a signal of a pitch in the lower octave and it is transmitted to the stroboscopic displaying means.The stroboscopic display means compares the signal to be tuned with the standard signal, making a light-flow display by overlapping both the signals. The pitch and octave of the tone to be tuned is previously set on the device with a manual selector switch.
摘要翻译：用于乐器或声音的调谐装置包括视觉频闪显示装置，其以与相应标准音高的信号的调谐音差成比例的速度显示光流。由高频振荡器以标准间距产生的脉冲合成预定倍频程中的标准音调，并将其划分为预定的低倍频程中的音调，以便比较在频闪显示装置中要调谐的音调。要被调谐的音调也被划分为较低八度的音调的信号，并被传送到频闪显示装置。

2. 发明授权

US4612841A Electronic metronome 失效
标题翻译：电子节拍器
公开(公告)号：US4612841A
公开(公告)日：1986-09-23
申请号：US687636
申请日：1984-12-31
申请人： Haruzo Yoshikawa
发明人： Haruzo Yoshikawa
IPC分类号： G04F5/02
CPC分类号： G04F5/027
摘要： The electronic metronome has a baton reciprocatingly driven by a pulse-drive stepper motor powered by a varying voltage source. Drive circuitry generates and applies drive pulses to the stepper motor, each drive pulse being composed of a plurality of individual pulses having a pulse width which varies in accordance with variations of the voltage source and with the selected tempo at which the baton reciprocates. The stepper motor is thus driven at a constant torque-frequency characteristic despite fluctuations in the power source voltage and the tempo of the metronome.
摘要翻译：电子节拍器具有由由变化的电压源供电的脉冲驱动步进电机往复驱动的指挥棒。驱动电路产生驱动脉冲并向步进电机施加驱动脉冲，每个驱动脉冲由多个单独的脉冲组成，其脉冲宽度根据电压源的变化和所选择的速度在棒棒复原时变化。因此，尽管电动机电压和节拍器的速度有波动，步进电动机也以恒定的转矩频率特性被驱动。

3. 发明授权

US4218874A Electronic metronome 失效
标题翻译：电子节拍器
公开(公告)号：US4218874A
公开(公告)日：1980-08-26
申请号：US3090
申请日：1979-01-12
申请人： Shuichi Ishida , Haruzo Yoshikawa , Fumio Morohoshi
发明人： Shuichi Ishida , Haruzo Yoshikawa , Fumio Morohoshi
IPC分类号： G04F5/02 , G10G7/02 , G10H5/06
CPC分类号： G04F5/025
摘要： An electronic metronome has a visual indicator, a loudspeaker, and a duty time setting circuit for setting the visual time of a visual indicator corresponding to each speed of various tempos. Accordingly, it is easy for a singer, a player, etc. to precisely see the predetermined tempo by using the duty time setting circuit.
摘要翻译：电子节拍器具有视觉指示器，扬声器和占空时间设置电路，用于设置与各种节奏的每个速度对应的视觉指示器的视觉时间。因此，通过使用占空时间设定电路，歌手，玩家等容易准确地看到预定的速度。

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