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公开(公告)号：US07221349B2
公开(公告)日：2007-05-22
申请号：US10841449
申请日：2004-05-10
IPC分类号： G09G3/36
CPC分类号： G09G3/325 , G09G3/3283 , G09G2300/0842 , G09G2310/0254 , G09G2310/027 , G09G2320/043 , G09G2330/028
摘要： A display current of a whole gray scale range according to a display signal of four bits is produced from a sum of output currents of an analog current supply circuit producing a first output current according to lower data bits and two digital current supply circuits operating in accordance with corresponding data bits to execute or stop generation of second and third output currents according to higher data bits. The analog current supply circuit has a calibration function of compensating for output current variations due to transistor characteristics at one point in a control range of the first output current. A display device with light-emitting elements can accurately generate a display current for gray-scale expression without imposing an excessive load on a manufacturing process while suppressing circuit footprint.
摘要翻译： 从根据低位数据位产生第一输出电流的模拟电流供给电路的输出电流和根据低位数据位操作的两个数字电流供给电路产生根据四位显示信号的整个灰度范围的显示电流 具有相应的数据位以根据较高数据位执行或停止产生第二和第三输出电流。 模拟电流供应电路具有校正功能，其补偿由于在第一输出电流的控制范围内的一个点处的晶体管特性引起的输出电流变化。 具有发光元件的显示装置可以精确地生成用于灰度表达的显示电流，而不会在制造过程中施加过大的负载，同时抑制电路占用面积。
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公开(公告)号：US07570244B2
公开(公告)日：2009-08-04
申请号：US10513755
申请日：2003-06-17
申请人： Masafumi Agari , Hidetada Tokioka , Ryuichi Hashido , Takahiro Urakabe , Suehiro Gotoh , Masashi Okabe , Mitsuo Inoue
发明人： Masafumi Agari , Hidetada Tokioka , Ryuichi Hashido , Takahiro Urakabe , Suehiro Gotoh , Masashi Okabe , Mitsuo Inoue
IPC分类号： G09G3/36
CPC分类号： G09G3/3283 , G09G3/3241 , G09G2300/0417 , G09G2300/0842 , G09G2300/0861 , G09G2310/027 , G09G2310/0297 , G09G2320/0242
摘要： Signal lines for supplying signal currents to respective pixel circuits having light emitting elements are arranged. A signal line driving circuit generates, on a signal line, a signal current corresponding to the image data, by switching bit weighting currents output from bit weighting current source circuits provided for respective bits of the image data, using a switch circuit turned on/off dependent on the corresponding bit. Each current source circuit has a function of correcting the level of the bit weighting current output from itself, based on a reference current of the bit weighting current supplied from a reference current line. Therefore, even when the characteristics of TFTs forming respective current source circuits vary widely, variation in signal currents among the signal lines can be suppressed, and unevenness in emission luminance can be suppressed.
摘要翻译： 布置用于向具有发光元件的各个像素电路提供信号电流的信号线。 信号线驱动电路通过使用开关电路接通/断开来切换信号线上产生与图像数据相对应的信号电流，通过切换由针对图像数据的各个比特设置的比特加权电流源电路输出的比特加权电流 取决于相应的位。 每个电流源电路具有基于从参考电流线提供的比特加权电流的参考电流来校正其自身输出的比特加权电流的电平的功能。 因此，即使形成各个电流源电路的TFT的特性变化很大，也可以抑制信号线之间的信号电流的变化，能够抑制发光亮度的不均匀。
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公开(公告)号：US20050174306A1
公开(公告)日：2005-08-11
申请号：US10513755
申请日：2003-06-17
申请人： Masafumi Agari , Hidetada Tokioka , Ryuichi Hashido , Takahiro Urakabe , Suehiro Gotoh , Masashi Okabe , Mitsuo Inoue
发明人： Masafumi Agari , Hidetada Tokioka , Ryuichi Hashido , Takahiro Urakabe , Suehiro Gotoh , Masashi Okabe , Mitsuo Inoue
CPC分类号： G09G3/3283 , G09G3/3241 , G09G2300/0417 , G09G2300/0842 , G09G2300/0861 , G09G2310/027 , G09G2310/0297 , G09G2320/0242
摘要： Signal lines for supplying signal currents to respective pixel circuits having light emitting elements are arranged. A signal line driving circuit generates, on a signal line, a signal current corresponding to the image data, by switching bit weighting currents output from bit weighting current source circuits provided for respective bits of the image data, using a switch circuit turned on/off dependent on the corresponding bit. Each current source circuit has a function of correcting the level of the bit weighting current output from itself, based on a reference current of the bit weighting current supplied from a reference current line. Therefore, even when the characteristics of TFTs forming respective current source circuits vary widely, variation in signal currents among the signal lines can be suppressed, and unevenness in emission luminance can be suppressed.
摘要翻译： 布置用于向具有发光元件的各个像素电路提供信号电流的信号线。 信号线驱动电路通过使用开关电路接通/断开来切换信号线上产生与图像数据相对应的信号电流，通过切换由针对图像数据的各个比特设置的比特加权电流源电路输出的比特加权电流 取决于相应的位。 每个电流源电路具有基于从参考电流线提供的比特加权电流的参考电流来校正其自身输出的比特加权电流的电平的功能。 因此，即使形成各个电流源电路的TFT的特性变化很大，也可以抑制信号线之间的信号电流的变化，能够抑制发光亮度的不均匀。
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公开(公告)号：US07079094B2
公开(公告)日：2006-07-18
申请号：US10601876
申请日：2003-06-24
申请人： Hidetada Tokioka , Ryuichi Hashido , Takahiro Urakabe , Masafumi Agari , Masashi Okabe , Mitsuo Inoue
发明人： Hidetada Tokioka , Ryuichi Hashido , Takahiro Urakabe , Masafumi Agari , Masashi Okabe , Mitsuo Inoue
IPC分类号： G09G3/32
CPC分类号： G09G3/3283 , G09G3/325 , G09G2300/0814 , G09G2300/0842 , G09G2320/0233 , G09G2320/0295 , G09G2320/043
摘要： In a compensation mode executed before a supply mode, a current supply circuit for supplying a data current according to display luminance to a current-driven light emitting device allows a reference current to pass through a drive transistor for supplying the data current to a data line in the supply mode. The voltage of a node connected to the gate of the drive transistor at this time is held by a voltage holding capacitor. In the supply mode, the voltage of the node changes according to a data voltage. The data voltage is set according to the difference between the data current to be supplied and the reference current.
摘要翻译： 在供给模式之前执行的补偿模式中，用于根据显示亮度向当前驱动的发光装置提供数据电流的电流供应电路允许参考电流通过用于将数据电流提供给数据线的驱动晶体管 在供应模式下。 此时与驱动晶体管的栅极连接的节点的电压由保持电容器保持。 在供电模式下，节点的电压根据数据电压而变化。 数据电压根据要提供的数据电流与参考电流之间的差设置。
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公开(公告)号：US20130119961A1
公开(公告)日：2013-05-16
申请号：US13811505
申请日：2011-07-27
IPC分类号： G05F5/00
CPC分类号： G05F5/00 , H02M1/32 , H02M3/158 , H02M3/1588 , Y02B70/1466
摘要： In a DC/DC converter, a first operation section calculates a first operation value, based on a difference voltage between an instruction value for a high-voltage-side voltage and a detected value of a high-voltage-side voltage, a second operation section calculates a second operation value, based on a difference voltage between a voltage instruction value for a charge-discharge capacitor and a voltage detected value of the charge-discharge capacitor, and a switching control section obtains a conduction ratio, based on the first operation value and the second operation value, and controls, based on the conduction ratio, switching operations of first to fourth semiconductor circuits, thereby controlling the high-voltage-side voltage, and the voltage of the charge-discharge capacitor.
摘要翻译： 在DC / DC转换器中，第一运算部根据高电压侧电压的指示值与高压侧电压的检测值之间的差分电压，计算第一运算值，第二运算 基于充放电电容器的电压指令值和充放电电容器的电压检测值之间的差分电压来计算第二操作值，并且开关控制部分基于第一操作获得导通比 值和第二操作值，并且基于导通比控制第一至第四半导体电路的开关操作，从而控制高压侧电压和充放电电容器的电压。
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公开(公告)号：US20120014139A1
公开(公告)日：2012-01-19
申请号：US13258055
申请日：2009-04-01
申请人： Masaki Yamada , Takahiro Urakabe , Akihiko Iwata , Norikazu Ito
发明人： Masaki Yamada , Takahiro Urakabe , Akihiko Iwata , Norikazu Ito
IPC分类号： H02M3/335
CPC分类号： H02M1/4225 , H02M1/4208 , Y02B70/126
摘要： In a power converting apparatus which converts AC power into DC power, an inverter circuit including at least one series-connected single-phase inverter is connected in a downstream of a stage in which an AC input is rectified in series therewith. In the downstream stage of the inverter circuit, there are provided a smoothing capacitor connected via a rectifier diode and a short-circuiting switch for bypassing the smoothing capacitor. The short-circuiting switch is set to an ON state only in each of short-circuiting phase ranges of which midpoint matches each of zero-crossing phases and an output of the inverter circuit is controlled by using a current command so that a DC voltage of the smoothing capacitor follows a target voltage and an input power factor is improved.
摘要翻译： 在将AC电力转换为DC电力的电力转换装置中，包括至少一个串联连接的单相逆变器的逆变器电路在与其串联整流的级的下游连接。 在逆变器电路的下游侧，设置有通过整流二极管连接的平滑电容器和用于旁路平滑电容器的短路开关。 短路开关仅在其中点与每个过零相位匹配的短路相位范围中的每一个中被设置为导通状态，并且通过使用电流指令来控制逆变器电路的输出，使得直流电压 平滑电容器跟随目标电压，并且改善输入功率因数。
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公开(公告)号：US07619907B2
公开(公告)日：2009-11-17
申请号：US12059109
申请日：2008-03-31
申请人： Takahiro Urakabe , Matahiko Ikeda , Masaru Kobayashi , Akihiko Iwata , Tatsuya Okuda , Hirotoshi Maekawa , Toshiyuki Kikunaga
发明人： Takahiro Urakabe , Matahiko Ikeda , Masaru Kobayashi , Akihiko Iwata , Tatsuya Okuda , Hirotoshi Maekawa , Toshiyuki Kikunaga
IPC分类号： H02M5/45
CPC分类号： H02M3/33569 , H02M2001/0077 , H02M2003/1586 , Y10T307/675
摘要： A DC/DC power conversion device includes n-stage circuits comprised of an inverter circuit for driving which is connected between positive terminals and negative terminals of smoothing capacitors, and a rectifier circuit which is connected between positive terminals and negative terminals of smoothing capacitors; a first circuit corresponding to at least one among the n-stage circuits and configured by connecting in parallel cell circuits of m, second circuits corresponding to a plurality of remaining circuits of (n−1) among the n-stage circuits; capacitors for energy transfer connected between middle points of the cell circuits and middle points of the second circuits; and column circuits of m comprised of the cell circuits, the second circuits and the capacitors for energy transfer, wherein the middle points are contact points of high voltage sided elements and low voltage sided elements of the cell circuits and the second circuits; and driving signals for driving the respective column circuits have the same driving cycle and are out of phase with each other.
摘要翻译： DC / DC电力转换装置包括n级电路，其包括连接在平滑电容器的正极端子和负极端子之间的用于驱动的反相器电路，以及连接在平滑电容器的正极端子和负极端子之间的整流电路; 对应于n级电路中的至少一个的第一电路，并且通过将与n级电路中的（n-1）的多个剩余电路相对应的m个第二电路的并行单元电路连接而构成; 连接在电池电路的中点和第二电路的中点之间的用于能量传输的电容器; 以及由单元电路，第二电路和用于能量传递的电容器组成的m的列电路，其中中点是单元电路和第二电路的高压侧元件和低压侧元件的接触点; 并且用于驱动各个列电路的驱动信号具有相同的驱动周期并且彼此异相。
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公开(公告)号：US20080253156A1
公开(公告)日：2008-10-16
申请号：US12060542
申请日：2008-04-01
IPC分类号： H02J1/10
CPC分类号： H02M3/158 , Y02B70/1425
摘要： A DC/DC power conversion device with smoothing capacitors including three column circuits share the smoothing capacitors to be connected in parallel, each column circuit have a plurality of circuits connected in series where two MOSFETs are connected in series between both ends of respective smoothing capacitors and LC serial bodies of capacitors and inductors with the same resonant cycle are disposed between the circuits at two middle terminals. Driving signals for the respective column circuits have the same driving cycle identical with the resonant cycle of the LC serial bodies, and are out of phase with each other by 2π/3(rad), and thus charge-discharge currents towards the smoothing capacitors are circulated among the column circuits and ripple currents flowing through the smoothing capacitors are reduced.
摘要翻译： 具有包括三列电路的平滑电容器的DC / DC电力转换装置共享要并联连接的平滑电容器，每列电路具有串联连接的多个电路，其中两个MOSFET串联连接在各个平滑电容器的两端之间， 具有相同谐振周期的电容器和电感器的LC串联体设置在两个中间端子之间的电路之间。 各列电路的驱动信号具有与LC串联体的共振循环相同的驱动周期，并且彼此相位为2pi / 3（rad），因此向平滑电容器的充放电电流为 在列电路之间循环，并且流过平滑电容器的纹波电流减小。
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公开(公告)号：US20060097579A1
公开(公告)日：2006-05-11
申请号：US11312685
申请日：2005-12-21
申请人： Tatsuya Okuda , Takahiro Urakabe
发明人： Tatsuya Okuda , Takahiro Urakabe
IPC分类号： H02J3/12
CPC分类号： F02N11/0866 , F02N2011/0885 , F02N2011/0888 , H02J7/1438 , Y02T10/7016 , Y02T10/7022
摘要： A power circuit for a battery for, even when an idle-stop operation is continuously performed, preventing reduction of an electric power supplied to a motor at start-up to obtain a set engine rpm. The power circuit includes a series-connected power supply in which a battery having a load and a capacitor group are connected in series with each other, a DC/DC converter for shifting electric power between the battery and the capacitor group, and between the battery and the load, and a controller for controlling the DC/DC converter. The controller detects the voltage of the capacitor group, and when the voltage detected is lower than a first threshold voltage, controls the DC/DC converter so that the capacitor group is charged with electricity.
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公开(公告)号：US07023143B2
公开(公告)日：2006-04-04
申请号：US10851184
申请日：2004-05-24
申请人： Shigeki Harada , Kikuo Izumi , Takahiro Urakabe , Akihiron Suzuki , Akihiko Iwata , Takashi Ohsawa
发明人： Shigeki Harada , Kikuo Izumi , Takahiro Urakabe , Akihiron Suzuki , Akihiko Iwata , Takashi Ohsawa
IPC分类号： H05B37/02
CPC分类号： H05B41/2881 , H05B41/2886 , H05B41/2887 , H05B41/2928 , H05B41/388 , Y02B20/202
摘要： A ballast for a vehicle metal halide lamp is simplified using a DC-AC one-step-boost high frequency ballast system. To satisfy requirements specific to a metal halide lamp, a discharge developing capacitor is installed on a primary side of a transformer in parallel with a DC power supply, ensuring discharge development after a breakdown. To reduce the size and increase the operating voltage of the transformer, a booster circuit and voltage-doubler circuit are installed on the primary side and secondary side of the transformer, respectively. To reduce the size of the transformer and achieve a stable discharge, the ballast frequency is swept within a range between the specified minimum frequency and maximum frequency so that the center frequency is from 80 kHz to 120 kHz, and the same frequency is unsustained for more than 10 msec.
摘要翻译： 使用DC-AC一步升压高频镇流器系统简化了车辆金属卤化物灯的镇流器。 为了满足特定于金属卤化物灯的要求，放电显影电容器与直流电源平行地安装在变压器的初级侧，确保击穿后的放电发展。 为了减小变压器的尺寸和工作电压，分别在变压器的初级侧和次级侧安装升压电路和倍压器电路。 为了减小变压器的尺寸并实现稳定的放电，镇流器频率在指定的最小频率和最大频率之间的范围内扫描，使得中心频率为80kHz至120kHz，并且相同的频率不需要更多 超过10毫秒。
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