专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

31. 发明申请

US20110006694A9 DC/DC CONVERTER CONTROL CIRCUIT, AND POWER SUPPLY APPARATUS, LIGHT EMITTING APPARATUS AND ELECTRONIC DEVICE USING THE SAME 有权
标题翻译： DC / DC转换器控制电路和电源装置，发光装置和使用该装置的电子装置
公开(公告)号：US20110006694A9
公开(公告)日：2011-01-13
申请号：US11951408
申请日：2007-12-06
申请人： Yoichi Tamegai , Isao Yamamoto , Kyoichiro Araki
发明人： Yoichi Tamegai , Isao Yamamoto , Kyoichiro Araki
IPC分类号： H05B41/36 , G05F1/00
CPC分类号： H02M3/33507 , H02M1/32
摘要： A control circuit is provided for a separately excited DC/DC converter which directly monitors output voltage to detect a short-circuit state, and performs overcurrent protection. A switching controller of the control circuit controls a switching operation of a switching transistor of the separately excited DC/DC converter. A voltage comparator compares the output voltage and a threshold voltage, to detect the short-circuit state. After a predetermined start-up time has elapsed after beginning start-up of the separately excited DC/DC converter, when the voltage comparator detects the short-circuit state, the switching controller halts the switching operation of the switching transistor, and makes detection of the short-circuit state by the voltage comparator non-operative before elapse of the start-up time. After detecting the short-circuit state and halting the switching operation of the switching transistor for a predetermined halt time, the switching controller begins start-up of the separately excited DC/DC converter once again.
摘要翻译：为单独激励的DC / DC转换器提供控制电路，其直接监视输出电压以检测短路状态，并执行过电流保护。控制电路的开关控制器控制单独激励的DC / DC转换器的开关晶体管的开关操作。电压比较器比较输出电压和阈值电压，以检测短路状态。在单独激励的DC / DC转换器开始启动之后经过预定的启动时间之后，当电压比较器检测到短路状态时，开关控制器停止开关晶体管的开关操作，并且检测电压比较器的短路状态在启动时间过去之前不起作用。在检测到短路状态并停止开关晶体管的切换操作达预定的停止时间之后，开关控制器再次开始启动单独激励的DC / DC转换器。

32. 发明授权

US07868744B2 Driving apparatus of mover 有权
标题翻译：动力驱动装置
公开(公告)号：US07868744B2
公开(公告)日：2011-01-11
申请号：US12138609
申请日：2008-06-13
申请人： Kyoichiro Araki , Isao Yamamoto
发明人： Kyoichiro Araki , Isao Yamamoto
IPC分类号： H04B3/36 , G08B21/00
CPC分类号： G06F3/016
摘要： A driving apparatus drives a mover arranged for feedback of a touch panel. A reference voltage generation unit generates a reference voltage having a signal waveform to be applied to the mover. A pulse modulator generates a PWM signal of which duty ratio is controlled by feedback so that a feedback voltage corresponding to a drive voltage to be applied to the mover approaches the reference voltage. A switching element of the DC/DC converter is turned ON/OFF by a PWM signal from the pulse modulator, so that an output voltage of the DC/DC converter is controlled, and a drive voltage corresponding to the output voltage is applied to the mover.
摘要翻译：驾驶装置驱动布置成用于触摸面板的反馈的移动器。参考电压产生单元产生具有要施加到移动器的信号波形的参考电压。脉冲调制器产生PWM信号，其中占空比由反馈控制，使得与施加到移动器的驱动电压相对应的反馈电压接近参考电压。通过来自脉冲调制器的PWM信号使DC / DC转换器的开关元件接通/断开，从而控制DC / DC转换器的输出电压，并将对应于输出电压的驱动电压施加到移动者

33. 发明申请

US20090200962A1 POWER SUPPLY APPARATUS 有权
标题翻译：电源设备
公开(公告)号：US20090200962A1
公开(公告)日：2009-08-13
申请号：US12402229
申请日：2009-03-11
申请人： Isao Yamamoto , Tomoyuki Ito
发明人： Isao Yamamoto , Tomoyuki Ito
IPC分类号： H05B41/36 , G05F1/40
CPC分类号： H02M3/07 , H05B33/0815
摘要： In a power supply apparatus for performing constant current driving of a light emitting diode which is a load circuit, a constant current circuit is disposed on a path for driving the load circuit. A charge pump circuit which is a voltage generating circuit outputs a driving voltage to the light emitting diode. A monitoring circuit monitors the voltage across the two ends of the constant current circuit. This monitoring circuit includes a voltage source which generates a threshold voltage that follows the fluctuation of the voltage at which the constant current circuit can operate stably, compares the voltage across the two ends of the constant current circuit and the threshold voltage generated by the voltage source, and outputs a comparison result Vs to a control unit. The control unit controls the charge pump circuit on the basis of the output of the monitoring circuit.
摘要翻译：在作为负载电路的发光二极管进行恒流驱动的电源装置中，在用于驱动负载电路的路径上设置恒流电路。作为电压产生电路的电荷泵电路向发光二极管输出驱动电压。监控电路监测恒流电路两端的电压。该监视电路包括电压源，其产生跟随恒定电流电路稳定工作的电压波动的阈值电压，比较恒流电路两端的电压和由电压源产生的阈值电压，并将比较结果Vs输出到控制单元。控制单元根据监控电路的输出控制电荷泵电路。

34. 发明申请

US20090102435A1 CONTROL CIRCUIT AND METHOD FOR CAPACITOR CHARGING CIRCUIT 有权
标题翻译：控制电路和电容充电电路的方法
公开(公告)号：US20090102435A1
公开(公告)日：2009-04-23
申请号：US12255742
申请日：2008-10-22
申请人： Tatsuya Iwasaki , Isao Yamamoto
发明人： Tatsuya Iwasaki , Isao Yamamoto
IPC分类号： H02J7/00
CPC分类号： H02M3/33523 , G01R19/0084
摘要： An output voltage monitoring circuit monitors an output voltage of a capacitor charging circuit. A first sample-and-hold circuit samples and holds a voltage of a connection point of a primary coil of a transformer and a switching transistor. A first monitoring comparator compares output of the first sample-and-hold circuit with a predetermined first reference voltage. When the output of the first sample-and-hold circuit exceeds the first reference voltage, a signal processor executes predetermined signal processing. The first sample-and-hold circuit starts a sampling period after a predetermined first time has elapsed after the switching transistor is turned OFF. When a voltage drop across a detection resistor reaches a third reference voltage, the first sample-and-hold circuit ends the sampling period.
摘要翻译：输出电压监视电路监视电容器充电电路的输出电压。第一采样保持电路对变压器的初级线圈和开关晶体管的连接点的电压进行采样并保持。第一监视比较器将第一采样保持电路的输出与预定的第一参考电压进行比较。当第一采样保持电路的输出超过第一参考电压时，信号处理器执行预定的信号处理。第一采样保持电路在开关晶体管截止之后经过预定的第一时间之后开始采样周期。当检测电阻上的电压降达到第三参考电压时，第一个采样和保持电路结束采样周期。

35. 发明申请

US20090096389A1 DC/DC CONVERTER 有权
标题翻译： DC / DC转换器
公开(公告)号：US20090096389A1
公开(公告)日：2009-04-16
申请号：US12062756
申请日：2008-04-04
申请人： Yoichi Tamegai , Isao Yamamoto
发明人： Yoichi Tamegai , Isao Yamamoto
IPC分类号： H05B37/02
CPC分类号： H05B41/32
摘要： A control circuit of a DC/DC converter is provided for supplying a driving voltage to a light emitting element. A hysteresis comparator compares a detection voltage that corresponds to the output voltage of the DC/DC converter with two threshold voltages. If the detection voltage is smaller than the lower threshold voltage, the hysteresis comparator outputs a comparison signal at the low level. Otherwise, the comparison signal is set to the high level. The switching control unit uses the comparison signal as a reference. The switching control unit instructs the switching transistor of the DC/DC converter to perform the switching operation during a period when the comparison signal is at the low level. Otherwise, the switching operation is suspended. The control circuit inhibits light emission of the light emitting element during a period when the comparison signal is at the low level. Otherwise, the control circuit permits the light emission.
摘要翻译：提供DC / DC转换器的控制电路，用于向发光元件提供驱动电压。滞后比较器将对应于DC / DC转换器的输出电压的检测电压与两个阈值电压进行比较。如果检测电压小于较低阈值电压，则迟滞比较器输出低电平的比较信号。否则，将比较信号设置为高电平。开关控制单元使用比较信号作为参考。开关控制单元在比较信号为低电平的期间指示DC / DC转换器的开关晶体管进行开关动作。否则，切换操作被暂停。在比较信号为低电平的期间，控制电路抑制发光元件的发光。否则，控制电路允许发光。

36. 发明授权

US07483021B2 Drive control circuit, emission control circuit, communication apparatus and drive control method 有权
标题翻译：驱动控制电路，排放控制电路，通讯装置及驱动控制方法
公开(公告)号：US07483021B2
公开(公告)日：2009-01-27
申请号：US11068103
申请日：2005-02-28
申请人： Isao Yamamoto , Tomoyuki Ito , Hiroyuki Iwaki
发明人： Isao Yamamoto , Tomoyuki Ito , Hiroyuki Iwaki
IPC分类号： G09G3/36
CPC分类号： H05B33/0866 , H04M1/22 , H05B33/0818 , H05B33/0857 , Y02B20/346
摘要： A drive control circuit sends out pulse signals of various pulse signals so as to control the light emission amount and luminance of LEDs by gradually increasing and decreasing the pulse width in predetermined cycles during predetermined periods based on parameters supplied from an LED drive controller that determine a first emission control processing period, a second emission control processing period, first to fourth slope periods and the like. The tone of an emitted color realized by a plurality of LEDs is controlled by synchronizing the periods of time of light emission control processings.
摘要翻译：驱动控制电路发出各种脉冲信号的脉冲信号，以便根据从LED驱动控制器提供的参数来逐步增加和减少预定周期内的脉冲宽度来控制LED的发光量和亮度，第一发光控制处理期间，第二发光控制处理期间，第一至第四斜坡期间等。通过使发光控制处理的时间段同步来控制由多个LED实现的发射色调的色调。

37. 发明申请

US20090009144A1 Discharge Device 有权
标题翻译：放电装置
公开(公告)号：US20090009144A1
公开(公告)日：2009-01-08
申请号：US11887232
申请日：2006-03-29
申请人： Hisanori Hoshikawa , Kyoichiro Araki , Isao Yamamoto , Youichi Tamegai
发明人： Hisanori Hoshikawa , Kyoichiro Araki , Isao Yamamoto , Youichi Tamegai
IPC分类号： H02J7/00 , H02M3/335
CPC分类号： G03B29/00 , G03B15/05 , G03B2215/05 , H02J7/0029 , H02J7/0065 , H02J2007/0039 , H02J2007/0067 , H02M1/36 , H02M3/33507 , H05B41/34
摘要： A discharging device capable of realizing a proper PWM drive by accurately reflecting, as a strobe device, the secondary-side condition of a separately-excited strobe charging circuit being charged. A charging device which charges a main capacitor (2) via a separately-excited DC/DC converter and discharges the energy of the main capacitor, wherein a pulse width control circuit (1) for controlling a conduction pulse width on the primary side of the separately-excited DC/DC converter is provided, and this pulse width control circuit is configured such that a PWM soft start drive is performed that expands a conduction pulse width on the primary side of the separately-excited DC/DC converter stepwise up to a maximum pulse width.
摘要翻译：一种能够通过精确地反射单独激励的闪光灯充电电路的次级侧状态作为选通装置来实现适当的PWM驱动的放电装置。一种充电装置，其通过单独激励的DC / DC转换器对主电容器（2）充电，并释放主电容器的能量，其中，用于控制主电容器的初级侧的导通脉冲宽度的脉冲宽度控制电路（1）提供单独激励的DC / DC转换器，并且该脉冲宽度控制电路被配置为使得逐步增加单独激励的DC / DC转换器的初级侧的导通脉冲宽度的PWM软启动驱动，直到达到最大脉冲宽度。

38. 发明授权

US07423626B2 Light-emission control circuit 有权
标题翻译：发光控制电路
公开(公告)号：US07423626B2
公开(公告)日：2008-09-09
申请号：US10890459
申请日：2004-07-12
申请人： Isao Yamamoto , Koichi Miyanaga
发明人： Isao Yamamoto , Koichi Miyanaga
IPC分类号： G09G3/36
CPC分类号： G09G3/3413 , G01J1/32 , G02B6/0068 , G09G2320/0233 , G09G2320/064 , G09G2320/0666 , G09G2360/145
摘要： Light-emitting parts are attached to a light guide plate of a backlight unit so as to be illuminated by the backlight. A measuring unit formed by light-receiving parts is provided on the opposite side of the light guide plate. The measuring unit detects the luminance or color tone of light inside the light guide plate. A control unit subjects the luminance or color tone to feedback control in accordance with a result of measurement.
摘要翻译：发光部分附着在背光单元的导光板上，以便被背光照亮。由光接收部形成的测量单元设置在导光板的相对侧。测量单元检测导光板内的光的亮度或色调。控制单元根据测量结果对亮度或色调进行反馈控制。

39. 发明授权

US07391406B2 Light emission control circuit uniformly and non-uniformly controlling a plurality of light-emitting elements 失效
标题翻译：发光控制电路均匀且均匀地控制多个发光元件
公开(公告)号：US07391406B2
公开(公告)日：2008-06-24
申请号：US10892029
申请日：2004-07-15
申请人： Isao Yamamoto , Koichi Miyanaga
发明人： Isao Yamamoto , Koichi Miyanaga
IPC分类号： G09G3/36
CPC分类号： H05B33/0863 , H05B33/0815 , H05B33/0827 , Y02B20/346
摘要： A booster converter outputs a boosted voltage. A plurality of LEDs emit light of respective colors. The transistors establish or shut connection between the LEDs and a main driving circuit. A variable current circuit feeds a current to drive the LEDs. A PWM control unit effects control to cause the LEDs to emit light with respective tones of color. A PWM circuit executes PWM modulation in accordance with an instruction from the PWM control unit. A setting control unit 138 controls the magnitude of the driving current fed by the variable current circuit in accordance with an instruction from a second light emission control unit. In an image pickup mode, an additional driving circuit feeds a driving current to the LEDs so that the LEDs operate as an electronic flash.
摘要翻译：升压转换器输出升压电压。多个LED发射各种颜色的光。晶体管建立或关闭LED和主驱动电路之间的连接。可变电流电路馈送电流来驱动LED。 PWM控制单元进行控制以使LED以各种颜色的色调发光。 PWM电路根据来自PWM控制单元的指令执行PWM调制。设置控制单元138根据来自第二发光控制单元的指令来控制由可变电流电路馈送的驱动电流的大小。在图像拾取模式中，附加驱动电路将驱动电流馈送到LED，使得LED作为电子闪光灯工作。

40. 发明授权

US07388560B2 Power supply apparatus 失效
标题翻译：电源设备
公开(公告)号：US07388560B2
公开(公告)日：2008-06-17
申请号：US10925562
申请日：2004-08-25
申请人： Isao Yamamoto , Tomoyuki Ito , Takahiro Ota
发明人： Isao Yamamoto , Tomoyuki Ito , Takahiro Ota
IPC分类号： G09G3/36
CPC分类号： G09G3/36 , G09G2330/02 , H02M3/07 , H02M3/156 , H02M2001/0045
摘要： An LCD panel module includes a common boosting converter, an LCD boosting circuit, an LDO control circuit, and constant current circuits for parallel-connected LED elements and series-connected LED elements. The LCD panel module is so configured that a type-switching unit can switch over between Type 1 in which the LED elements are connected in parallel and Type 2 in which the LED elements are connected in series. The common boosting converter preliminarily boosts a battery voltage supplied from a lithium ion battery to a low voltage or a high voltage and supplies the boosted voltage to the parallel-connected LED elements or series-connected LED elements respectively. The LCD boosting circuit boosts the low voltage and supplies it to an LCD panel, while the LDO control circuit steps down the high voltage and supplies it to the LCD panel.
摘要翻译： LCD面板模块包括公共升压转换器，LCD升压电路，LDO控制电路和用于并联LED元件和串联LED元件的恒流电路。 LCD面板模块被配置为使得类型切换单元可以在LED元件并联连接的类型1和LED元件串联连接的类型2之间切换。公共升压转换器预先将从锂离子电池供给的电池电压升压到低电压或高电压，并将升压电压分别提供给并联LED元件或串联连接的LED元件。 LCD升压电路提升低电压并提供给LCD面板，而LDO控制电路降低高压并将其提供给LCD面板。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式