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8 条记录 (耗时 0.013 秒)

    AUDIO SIGNAL AMPLIFIER CIRCUIT WITH A MUTE FUNCTION
    1.
    发明申请
    AUDIO SIGNAL AMPLIFIER CIRCUIT WITH A MUTE FUNCTION 审中-公开
    具有静音功能的音频信号放大器电路

    公开(公告)号：US20090102550A1

    公开(公告)日：2009-04-23

    申请号：US11917113

    申请日：2006-06-06

    申请人： Shigeji Ohama ,  Satoshi Oishi

    发明人： Shigeji Ohama ,  Satoshi Oishi

    IPC分类号： H03F3/38

    CPC分类号： H03F3/217 ,  H03F1/26 ,  H03F1/305 ,  H03G3/348

    摘要： An integrator generates analog voltage in a manner that in an active state a duty ratio of an output signal of an class D amplifier is brought close to a duty ratio defined by an analog audio signal. A first mute circuit forcibly turns on the class D amplifier in an active state. In an active state, A voltage-fixing circuit fixes an output terminal of the class D amplifier to a predetermined fixed potential of Vdd/2. A second mute circuit is provided between an output terminal of a filter and ground, and connects the output terminal of the filter to ground in an active state. A mute control unit controls the integrator, the first mute circuit, the voltage-fixing circuit and the second mute circuit, respectively. As a result, the noise at the time of start and stop can be optimally reduced.

    摘要翻译： 积分器以在激活状态下产生模拟电压，使D类放大器的输出信号的占空比接近由模拟音频信号定义的占空比。 第一个静音电路在激活状态下强制打开D类放大器。 在激活状态下，A电压固定电路将D类放大器的输出端固定在预定的Vdd / 2的固定电位。 在滤波器的输出端子和地之间设置第二静音电路，并将滤波器的输出端子连接到接地状态。 静音控制单元分别控制积分器，第一静音电路，电压固定电路和第二静音电路。 结果，可以最佳地降低启动和停止时的噪音。

    Head lamp device for automobiles
    3.
    发明授权
    Head lamp device for automobiles 失效
    汽车头灯装置

    公开(公告)号：US5224771A

    公开(公告)日：1993-07-06

    申请号：US830695

    申请日：1992-02-04

    申请人： Satoshi Oishi

    发明人： Satoshi Oishi

    IPC分类号： F21S8/10 ,  B60Q1/04 ,  F21V5/00 ,  F21V9/12 ,  F21V15/00

    CPC分类号： B60Q1/04 ,  F21V9/12 ,  F21S48/1233

    摘要： A head lamp device for automobiles has a light source and a cover member arranged in front of the light source. The light source is comprised of a transparent hard resin plate curved outwardly at its central part, and a transparent soft resin sheet intimately in contact with a rear surface of the transparent hard resin plate with a peripheral edge of the transparent soft resin sheet attached fluid tight to a peripheral edge of the transparent hard resin plate. The transparent hard resin plate has a pipe through which a colored solution is supplied into and removed from a space formed between the transparent hard resin plate and the transparent soft resin sheet.

    Audio power amplifier IC and audio system provided with the same
    4.
    发明授权
    Audio power amplifier IC and audio system provided with the same 有权
    音频功率放大器IC和音频系统提供相同

    公开(公告)号：US07459968B2

    公开(公告)日：2008-12-02

    申请号：US11661792

    申请日：2005-09-09

    申请人： Shigeji Ohama ,  Satoshi Oishi ,  Masatsugu Souma

    发明人： Shigeji Ohama ,  Satoshi Oishi ,  Masatsugu Souma

    IPC分类号： H03F3/38

    CPC分类号： H03F3/217 ,  H03F3/187 ,  H03F3/68 ,  H03F2200/03 ,  H03F2200/249 ,  H03F2200/345 ,  H03F2200/351

    摘要： An audio power amplifier IC which is capable of suppressing degradation in sound quality resulting from the frequency of a reference clock, and an audio system provided with the audio power amplifier IC are provided. The audio power amplifier IC includes a clock generation circuit generating an internal clock, a clock terminal for outputting the internal clock or receiving an external clock, a clock selection circuit selecting the internal clock or the external clock as a reference clock, a first audio signal input terminal for receiving a first audio signal, and a first digital power amplifier circuit performing pulse modulation on the first audio signal based on the reference clock to output a pulse synchronized with the reference clock.

    摘要翻译： 提供能够抑制由参考时钟的频率引起的声音质量劣化的音频功率放大器IC以及配备有音频功率放大器IC的音频系统。 音频功率放大器IC包括产生内部时钟的时钟产生电路，用于输出内部时钟或接收外部时钟的时钟端子，选择内部时钟或外部时钟作为参考时钟的时钟选择电路，第一音频信号 用于接收第一音频信号的输入端子以及基于所述参考时钟对所述第一音频信号执行脉冲调制的第一数字功率放大器电路，以输出与所述参考时钟同步的脉冲。

    Method of manufacturing fluorine compounds, and a method of recovering or regenerating precursors of fluorinating agents
    5.
    发明授权
    Method of manufacturing fluorine compounds, and a method of recovering or regenerating precursors of fluorinating agents 失效
    制备氟化合物的方法，以及回收或再生氟化剂前体的方法

    公开(公告)号：US06855850B2

    公开(公告)日：2005-02-15

    申请号：US10426726

    申请日：2003-05-01

    申请人： Kenji Adachi ,  Ginjiro Tomizawa ,  Satoshi Oishi

    发明人： Kenji Adachi ,  Ginjiro Tomizawa ,  Satoshi Oishi

    IPC分类号： C07D487/08 ,  C07B39/00 ,  C07C45/51 ,  C07C45/63 ,  C07C49/687 ,  C07C49/697 ,  C07C209/86 ,  C07C211/62 ,  C07D213/22 ,  C07D213/89 ,  C07F5/02 ,  C07C45/00 ,  C07C22/00 ,  C07D221/02 ,  C07D241/00

    CPC分类号： C07C49/697 ,  C07B39/00 ,  C07C45/512

    摘要： To provide a practical method of manufacturing fluorine compounds in a small number of steps that can carry out fluorination reaction of substrates using easily available fluorinating agents that can be inexpensively produced industrially, and recover precursors of the fluorinating agents generated accompanying the reaction quantitatively in an easy operation, and a method of recovery and regeneration of the precursors of the fluorinating agents.N-Fluoro-quaternary-nitrogen-onium tetrafluoroborate salts represented by the general formula (1) as the fluorinating agents are used. N-Hydro-quaternary-nitrogen-onium tetrafluoroborate salts represented by the general formula (2) generated accompanying the reaction are separated and recovered from the reaction mixture by means of depositing as crystals by the addition of solvents with a low affinity to the salts to the reaction mixture after the reaction.

    摘要翻译： 为了提供以少量步骤制造氟化合物的实用方法，可以使用容易得到的可在工业上廉价生产的氟化剂进行底物的氟化反应，并以容易的方式定量回收伴随反应产生的氟化剂的前体 操作，以及回收和再生氟化剂前体的方法。使用由通式（1）表示的作为氟化剂的N-氟 - 季 - 氮鎓鎓四氟硼酸盐。N-水 - 季氮 通过在反应后向反应混合物中加入低亲和性的溶剂沉积晶体，从反应混合物中分离并回收由通式（2）表示的四氟硼酸盐鎓盐。

    Audio Power Amplifier Ic and Audio System Provided with the Same
    8.
    发明申请
    Audio Power Amplifier Ic and Audio System Provided with the Same 有权
    音频功率放大器Ic和音频系统提供同样的功能

    公开(公告)号：US20070252644A1

    公开(公告)日：2007-11-01

    申请号：US11661792

    申请日：2005-09-09

    申请人： Shigeji Ohama ,  Satoshi Oishi ,  Masatsugu Souma

    发明人： Shigeji Ohama ,  Satoshi Oishi ,  Masatsugu Souma

    IPC分类号： H03F3/217 ,  H03F3/38

    CPC分类号： H03F3/217 ,  H03F3/187 ,  H03F3/68 ,  H03F2200/03 ,  H03F2200/249 ,  H03F2200/345 ,  H03F2200/351

    摘要： An audio power amplifier IC which is capable of suppressing degradation in sound quality resulting from the frequency of a reference clock, and an audio system provided with the audio power amplifier IC are provided. The audio power amplifier IC includes a clock generation circuit (10) generating an internal clock, a clock terminal (CLK) for outputting the internal clock or receiving an external clock, a clock selection circuit (11) selecting the internal clock or the external clock as a reference clock (BCLK), a first audio signal input terminal (IN1) for receiving a first audio signal (Lin), and a first digital power amplifier circuit (51) performing pulse modulation on the first audio signal (Lin) based on the reference clock (BCLK) to output a pulse synchronized with the reference clock (BCLK).

    摘要翻译： 提供能够抑制由参考时钟的频率引起的声音质量劣化的音频功率放大器IC以及配备有音频功率放大器IC的音频系统。 音频功率放大器IC包括产生内部时钟的时钟产生电路（10），用于输出内部时钟或接收外部时钟的时钟端子（CLK），选择内部时钟或外部时钟的时钟选择电路（11） 作为参考时钟（BCLK），用于接收第一音频信号（Lin）的第一音频信号输入端（IN1）和基于第一音频信号（Lin）对第一音频信号（Lin）执行脉冲调制的第一数字功率放大器电路 参考时钟（BCLK）输出与参考时钟（BCLK）同步的脉冲。