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41.发明授权Protection circuit, and semiconductor device and light emitting device using such protection circuit 失效保护电路，半导体器件和使用这种保护电路的发光器件公开(公告)号：US07889467B2
公开(公告)日：2011-02-15
申请号：US11915921
申请日：2006-05-29
IPC分类号： H02H9/00
CPC分类号： H05B33/0884 , H01L27/0248 , H01L2224/48227 , H01L2224/49113 , H01L2924/1305 , H01L2924/30107 , Y02B20/341 , H01L2924/00
摘要： In a protection circuit connected, via lines including an inductance component, to a circuit to be protected, a first transistor is arranged on a path to ground from a connection point of the protection circuit and the line. A second transistor is arranged on a path to ground from a connection point of the circuit to be protected and the line, and extracts, from a connection point, a current corresponding to a current flowing in the first transistor. The first and the second transistors are NPN bipolar transistors having a base and an emitter are commonly connected. A resistor is connected between the base and the emitter of the first transistor, and a diode is connected between the base and a collector.
摘要翻译： 在通过包括电感分量的线路连接到保护电路的保护电路中，第一晶体管被布置在从保护电路和线路的连接点到达的路径上。 第二晶体管被布置在从被保护电路的连接点到线路的路径上，并从连接点提取与流过第一晶体管的电流相对应的电流。 第一和第二晶体管是具有基极和发射极共同连接的NPN双极晶体管。 电阻器连接在第一晶体管的基极和发射极之间，二极管连接在基极和集电极之间。
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公开(公告)号：US20100201316A1
公开(公告)日：2010-08-12
申请号：US12702112
申请日：2010-02-08
CPC分类号： H02J50/12 , B60L11/182 , H02J5/005 , H02J7/025 , H02J50/80 , H04B5/0037 , H04B5/0093 , Y02T10/7005 , Y02T10/7072 , Y02T90/122 , Y02T90/14
摘要： A non-contact power transmission apparatus having an AC power source and a resonance system is disclosed. The resonance system has a primary coil connected to the AC power source, a primary side resonance coil, a secondary side resonance coil, a secondary coil, and a load connected to the secondary coil. The primary side resonance coil is separated from the primary coil in an axial direction by a first distance, and the secondary coil is separated from the secondary side resonance coil in the axial direction by a second distance. At least one of the first distance and the second distance is adjusted to be a distance that is determined in advance in accordance with the impedance of the load so that the power transmission efficiency is maintained at a proper value.
摘要翻译： 公开了一种具有AC电源和谐振系统的非接触式电力传输装置。 谐振系统具有连接到AC电源，初级侧共振线圈，次级侧共振线圈，次级线圈和连接到次级线圈的负载的初级线圈。 初级侧共振线圈与初级线圈在轴向上分离第一距离，次级线圈在轴向上与第二侧共振线圈分离第二距离。 第一距离和第二距离中的至少一个被调整为根据负载的阻抗预先确定的距离，使得电力传输效率保持在适当的值。
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公开(公告)号：US07528589B2
公开(公告)日：2009-05-05
申请号：US11784874
申请日：2007-04-09
申请人： Kenichi Nakata
发明人： Kenichi Nakata
CPC分类号： H02M3/1588 , H03K2217/0036 , Y02B70/1466
摘要： A step-up DC/DC converter uses N-channel field-effect transistors as both an output transistor and a synchronous-rectification transistor and includes a first driver making the gate voltage of the output transistor pulsate between a ground voltage and an input voltage and a second driver making the gate voltage of the synchronous-rectification transistor pulsate between a switching voltage and a bootstrap voltage equal to the switching voltage plus at least the ON threshold voltage of the synchronous-rectification transistor. With this configuration, the converter operates with improved power efficiency and performs synchronous rectification unhindered even with a small input-output voltage difference.
摘要翻译： 升压DC / DC转换器使用N沟道场效应晶体管作为输出晶体管和同步整流晶体管，并且包括使得输出晶体管的栅极电压在接地电压和输入电压之间脉动的第一驱动器， 使第二驱动器使同步整流晶体管的栅极电压在开关电压和等于开关电压加上至少同步整流晶体管的导通阈值电压的自举电压之间脉动。 通过这种配置，转换器以更高的功率效率工作，即使在小的输入 - 输出电压差下也能够不受阻碍地进行同步整流。
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公开(公告)号：US20050285834A1
公开(公告)日：2005-12-29
申请号：US11166402
申请日：2005-06-24
申请人： Kenichi Nakata
发明人： Kenichi Nakata
IPC分类号： G09G3/36
CPC分类号： G09G3/3696 , G09G3/3685 , G09G2310/0235 , G09G2320/0666 , G09G2330/02
摘要： One frame of a color image data is resolved into three frames of R, G, and B colors, which are displayed in sequence. In synchronism with the R, G, B frames, a power supply voltage for displaying each of the three frames is altered to predetermined levels set for the respective frames. Output voltage data for determining the voltage levels for red-, green-, and blue-frame are stored in rewritable forms, which are provided to the power supply circuit so that its output voltage is equilibrated to a reference voltage based on that output voltage data provided. The invention enables suppression of color temperature deviation due to variations in transmissivity of color filters while setting a common gradation level for the R, G, an B frames.
摘要翻译： 彩色图像数据的一帧被分解为按照顺序显示的R，G和B三种颜色。 与R，G，B帧同步，用于显示三个帧中的每一个的电源电压被改变为为各个帧设置的预定电平。 用于确定红色，绿色和蓝色帧的电压电平的输出电压数据以可重写形式存储，其被提供给电源电路，使得其输出电压基于该输出电压数据被平衡为参考电压 提供。 本发明能够抑制由于滤色片的透射率的变化引起的色温偏差，同时设置R，G，B帧的公共灰度级。
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公开(公告)号：US06917189B2
公开(公告)日：2005-07-12
申请号：US10424079
申请日：2003-04-25
申请人： Ko Takemura , Kiyotaka Umemoto , Kenichi Nakata
发明人： Ko Takemura , Kiyotaka Umemoto , Kenichi Nakata
CPC分类号： H02M3/1584 , H02M2001/0045 , H02M2001/322
摘要： The power supply unit is provided with a power supply circuit adapted to generate an output voltage in accord with an instruction voltage, an output condenser Co connected to the output end of the power supply circuit, and an auxiliary output voltage setting circuit adapted to compare the instruction voltage and the output voltage and to cause the output condenser to discharge its electric charge when the instruction voltage becomes lower than the output voltage. Because of the auxiliary output voltage setting circuit, the power supply circuit quickly generates an output voltage in accord with the instruction voltage if the instruction voltage is lowered.
摘要翻译： 电源单元设置有适于根据指令电压产生输出电压的电源电路，连接到电源电路的输出端的输出电容器Co和辅助输出电压设置电路， 指令电压和输出电压，并且当指令电压变得低于输出电压时，使输出电容器放电。 由于辅助输出电压设定电路，如果指令电压降低，电源电路就会根据指令电压快速产生输出电压。
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公开(公告)号：US06187462B1
公开(公告)日：2001-02-13
申请号：US09272618
申请日：1999-03-19
申请人： Takanori Doi , Kousaku Tamari , Yasuo Kakihara , Kenichi Nakata , Mitsuru Matsuura , Setsuo Yamamoto
发明人： Takanori Doi , Kousaku Tamari , Yasuo Kakihara , Kenichi Nakata , Mitsuru Matsuura , Setsuo Yamamoto
IPC分类号： G11B566
CPC分类号： G11B5/656 , G11B5/84 , G11B5/851 , Y10S428/90
摘要： A magnetic recording medium of the present invention comprises: a plastic substrate; and a cobalt-containing maghemite thin film formed on said substrate, containing cobalt at a molar ratio of cobalt to iron of not more than 0.06:1, and having either a spacing of a plane (311) of not more than 2.510 Å, a spacing of a plane (222) of not more than 2.415 Å or a spacing of a plane (220) of not more than 2.950 Å; and has a coercive force of not less than 2,000 Oe. Such magnetic recording medium suitably applicable to existent magnetic recording systems using a ring-type magnetic head and capable of using a plastic substrate for providing a magnetic recording medium for high-density recording.
摘要翻译： 本发明的磁记录介质包括：塑料基板; 以及在所述基板上形成的含有钴与铁的摩尔比为0.06：1以下且具有不大于2.51的平面（311）间隔的钴的磁赤铁矿薄膜， 平面（222）的间距不大于2.415埃或平面（220）的间距不大于2.950埃; 并具有不低于2000 Oe的矫顽力。 这种磁记录介质适用于使用环形磁头的现有磁记录系统，并能够使用塑料基板提供用于高密度记录的磁记录介质。
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公开(公告)号：US6165608A
公开(公告)日：2000-12-26
申请号：US161999
申请日：1998-09-29
申请人： Kousaku Tamari , Takanori Doi , Yasuo Kakihara , Kenichi Nakata
发明人： Kousaku Tamari , Takanori Doi , Yasuo Kakihara , Kenichi Nakata
CPC分类号： G11B5/656 , G11B5/851 , Y10S428/90 , Y10T428/26 , Y10T428/265
摘要： A magnetic recording medium of the present invention comprises:a substrate; anda cobalt-containing maghemite thin film formed on said substrate, containing cobalt at a molar ratio of cobalt to iron of not more than 0.06:1, having either a spacing of a (311) plane of not more than 2.510 .ANG., a spacing of a (222) plane of not more than 2.415 .ANG. or a spacing of a (220) plane of not more than 2.950 .ANG., and having a coercive force of not less than 1,800 Oe.Such a magnetic recording medium has as high a coercive force as possible, specifically not less than 1,800 Oe, and exhibits an excellent stability independent to change in passage of time and a large output in a high recording frequency region.
摘要翻译： 本发明的磁记录介质包括：基板; 和在所述基板上形成的含钴磁赤铁矿薄膜，其含有钴与铁的摩尔比不大于0.06:1的钴，其间隔（311）面不大于2.510安培，间距 （222）平面的不大于2.415安培的平面或（220）平面间距不大于2.950安培，并具有不小于1,800 Oe的矫顽力。 这样的磁记录介质具有尽可能高的矫顽力，特别是不低于1,800Oe，并且表现出与在高记录频率区域中随时间变化和大输出无关的优异的稳定性。
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公开(公告)号：US5231339A
公开(公告)日：1993-07-27
申请号：US670728
申请日：1991-03-18
CPC分类号： B60L9/18 , B60L15/2081 , H02P23/08 , B60L2200/26 , B60L2220/12 , Y02T10/644 , Y02T10/645 , Y02T10/7275
摘要： In a slip frequency control system hitherto widely employed as a control system for an induction motor type electric rolling stock (in which a slip frequency is determined from a current deviation, an inverter frequency is calculated from the slip frequency and a motor rotation frequency, and the inverter frequency is multiplied by a predetermined correction factor to determine a modulation rate, thereby operating an inverter), a motor output torque decreases in a low speed region. It is difficult to make the correction for this decrease of torque by detecting the torque. In the present invention made considering that a torque curve and sin .phi. (.phi.: the internal impedance angle of a motor) obtained from the result of simulation resemble each other, the decrease of sin .phi. is regarded as being the decrease of torque and a voltage to frequency ratio is corrected so as to compensate for the decrease of sin .phi..
摘要翻译： 在迄今为止广泛用作感应电动机型电动车辆的控制系统的滑差频率控制系统中（其中滑差频率根据电流偏差确定，根据转差频率和电动机转速频率计算变频器频率， 逆变器频率乘以预定的校正因子以确定调制速率，从而操作逆变器），电动机输出转矩在低速区域中减小。 通过检测转矩，难以进行扭矩减小的校正。 在本发明中，考虑到从仿真结果得到的转矩曲线和sinφ（phi：电动机的内部阻抗角）彼此相似，本发明中，将sin phi的减小视为转矩的降低和电压 对频率比进行校正，以补偿sin phi的减少。
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