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    • 2. 发明授权
    • Switching power supply apparatus
    • US07023717B2
    • 2006-04-04
    • US10689242
    • 2003-10-20
    • Shin Nakagawa
    • Shin Nakagawa
    • H02M5/42
    • H02M3/33523
    • The present invention relates to an isolated-type switching power supply apparatus, which includes a power supply, a transformer being connected to said power supply, a switching element for switching an electric current going through a primary coil of the transformer so that energy generated on the primary side of the transformer is sent to the secondary side in accordance with the operation of the switching element. The present invention has a modulating circuit for modulating an output on the secondary side of said transformer, a transmitting rout for transmitting an output of the modulating circuit to the primary side of the transformer, a demodulating circuit for demodulating the output transferred through the transferring rout; and the controlling circuit controls the switching element in accordance with an output of the demodulating circuit and the controlling circuit is disposed on the primary side of the transformer.
    • 4. 发明授权
    • Method for reproducing audio signals and an apparatus therefore
    • 因此,再现音频信号的方法和装置
    • US5754666A
    • 1998-05-19
    • US536116
    • 1995-09-29
    • Shin Nakagawa
    • Shin Nakagawa
    • G10L21/038H04R5/04H03G5/00
    • G10L21/038H04R5/04
    • When reproducing an audio signal with a conventional audio signal reproducing system, an unnaturalness in the quality of the reproduced sound occurs. The unnaturalness is caused by the frequency spectrum of the reproduced sound which is decreased or cut off at an upper limit of a reproducible frequency range or at an upper limit of an audible frequency range. The present invention adds a random noise component and/or a higher harmonics component exceeding over the upper limit of the reproducible frequency range or the upper limit of the audible frequency range to the original audio signal. By so doing, the reproduced sound has an excellent audio quality which can be sensed by the listener.
    • 当用常规音频信号再现系统再现音频信号时,再现的声音的质量出现不自然现象。 不自然现象是由可再生频率范围的上限或可听频率范围的上限减小或切断的再生声音的频谱引起的。 本发明将超过可再生频率范围的上限或可听频率范围的上限的随机噪声分量和/或高次谐波分量添加到原始音频信号。 通过这样做,再现的声音具有可以被听者感知的优良音频质量。
    • 5. 发明授权
    • Sheet feeder having automatic cut-sheet feed, continuous-form feed, and
manual sheet insertion modes
    • 具有自动切片进给,连续进纸和手动输入插入模式的纸张进纸器
    • US5141346A
    • 1992-08-25
    • US720029
    • 1991-06-24
    • Shin Nakagawa
    • Shin Nakagawa
    • B41J11/48
    • B41J11/48
    • An automatic sheet feeder assembled to a printer which is provided with a sheet feed means for feeding a continuous-form sheet. The sheet feeder includes a hopper for storing therein a stack of cut sheets and a pivotable stacker for storing therein a stack of printed cut sheets. The stacker has operative position for receiving the cut sheets therein and has a spaced position for allowing the continuous form sheet to be printed. Detecting means is provided for detecting pivotal position of the stacker, and control means is provided for feeding the continuous form sheet when the stacker is out of the operative position responsive to the position of the stacker. A sheet feed mechanism is provided for feeding the cut sheets on the hopper to the printer. The sheet feed mechanism becomes inoperative when the continuous-form sheet is to be printed.
    • 一种组装到打印机上的自动送纸器,其具有用于供给连续片材的片材进给装置。 片材进给器包括用于在其中存储切割片堆叠的料斗和用于在其中存储打印的切割片材的堆叠的可枢转堆叠器。 堆垛机具有用于在其中接收切割的片材的操作位置,并且具有用于允许连续成型片材被打印的间隔位置。 提供检测装置用于检测堆垛机的枢转位置,并且提供控制装置,用于当堆垛机响应于堆垛机的位置超出操作位置时,供给连续抄纸。 提供了一个送纸机构,用于将料斗上的切割片材送入打印机。 当要打印连续形式的纸张时,送纸机构变得不起作用。
    • 6. 发明授权
    • Switching power supply apparatus
    • 开关电源装置
    • US07272019B2
    • 2007-09-18
    • US10558799
    • 2005-05-16
    • Shin Nakagawa
    • Shin Nakagawa
    • H02M3/335
    • H02M1/40H02M3/3388
    • To provide a switching power supply apparatus which can achieve the followings simultaneously in high levels: the voltage waveform capable of reducing switching noise to the least is in a sine-waveform; capable of providing an output of stable voltage without a control, and a simple response; and capable of corresponding to instantaneous peak current without having saturation of the core. It relates to an improvement of a resonance-type Royer converter with less switching noise as a base, which is directed to be used for audio equipment. A second inductor is inserted to the primary side inductor between a rectifier circuit and a smoothing means, which is coupled to the primary-side inductor in a same magnetic circuit in a direction of canceling a DC magnetic flux. Moreover, timing of the next cycle is determined by applying a center tap voltage of a transformer to a synchronous signal input terminal of a control IC. Thereby, a self-excited oscillating action is actually stabled. With this, high demands for use in audios can be satisfied simultaneously.
    • 为了提供能够以高水平同时实现以下的开关电源装置:能够将开关噪声最小化的电压波形处于正弦波形; 能够提供稳定电压的输出,无需控制,响应简单; 并且能够对应于瞬时峰值电流而不具有磁芯的饱和度。 它涉及一种以较少的开关噪声为基础的谐振型Royer转换器的改进,其旨在用于音频设备。 第二电感器被插入整流电路和平滑装置之间的初级侧电感器,该平滑装置在消除DC磁通的方向上以相同的磁路耦合到初级侧电感器。 此外,通过将变压器的中心抽头电压施加到控制IC的同步信号输入端子来确定下一个周期的定时。 因此,自激振荡动作实际上是稳定的。 因此,可以同时满足对音频使用的高要求。
    • 8. 发明授权
    • Voltage step down type DC-DC converter having a coupled inductor
    • 具有耦合电感器的降压型DC-DC转换器
    • US06429628B2
    • 2002-08-06
    • US09777079
    • 2001-02-05
    • Shin Nakagawa
    • Shin Nakagawa
    • G05F1613
    • H02M1/34H02M3/158H02M2001/342Y02B70/1491
    • In the DC-DC converter according to the present invention, an intermediate tap is provided in the free-wheel inductor; the free-wheeling current goes out through the tap. The switch at the main switch side is driven by an N-channel FET (NPN transistor) and a pulse transformer, or the switch constitutes a P-channel FET (PNP transistor), so that the driving circuit at the rectifying side can be made simple. Further, the DC-DC converter includes loss-less snubber circuits or a soft switching circuit having a sub-switch in order to absorb and recover the surge energy from a leaked inductance, which is generated by the addition of the intermediate tap. Moreover, the driving circuit for the soft switching circuit is also simplified.
    • 在根据本发明的DC-DC转换器中,在后轮电感器中设置有中间抽头; 独轮电流通过水龙头出来。 主开关侧的开关由N沟道FET(NPN晶体管)和脉冲变压器驱动,或者开关构成P沟道FET(PNP晶体管),从而可以使整流侧的驱动电路 简单。 此外,DC-DC转换器包括无损耗缓冲电路或具有子开关的软开关电路,以便通过添加中间抽头产生的泄漏电感吸收和恢复浪涌能量。 此外,软开关电路的驱动电路也被简化。
    • 9. 发明授权
    • Single stage high power-factor converter
    • 单级高功率因数转换器
    • US06307761B1
    • 2001-10-23
    • US09424020
    • 1999-11-17
    • Shin Nakagawa
    • Shin Nakagawa
    • H02M723
    • H02M1/4258H02M3/285H05B41/2821Y02B70/126Y02P80/112
    • An output of a first converter for switching a rectified line current and an output of a second converter for switching a direct current are added together so that an efficiency, a power factor, a holding time, and a ripple characteristic can be improved. Further, the power supply apparatus can be made compact and the cost for manufacturing the apparatus can be reduced. A flyback converter type output circuit and a forward converter type output circuit are used in a parallel manner so that a transformer having a high efficiency can be used, and it becomes easier to control the apparatus.
    • 用于切换整流线电流的第一转换器的输出和用于切换直流电流的第二转换器的输出相加在一起,从而可以提高效率,功率因数,保持时间和纹波特性。 此外,可以使电源装置紧凑,并且可以降低制造装置的成本。 以并行方式使用反激式转换器型输出电路和正激变换器型输出电路,从而可以使用高效率的变压器,并且变得容易控制装置。