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1. 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。

2. 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。

3. 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。

4. 发明授权

US07960955B2 Power supply device, electronic device using the same, and semiconductor device 有权
标题翻译：电源装置，使用其的电子装置以及半导体装置
公开(公告)号：US07960955B2
公开(公告)日：2011-06-14
申请号：US12096765
申请日：2006-11-30
申请人： Tomoyuki Ito , Yoichi Tamegai , Koki Tamakawa , Isao Yamamoto
发明人： Tomoyuki Ito , Yoichi Tamegai , Koki Tamakawa , Isao Yamamoto
IPC分类号： G05F1/40
CPC分类号： H02M3/33507 , H02M2001/0045
摘要： A linear regulator is provided which stabilizes an input voltage based on a reference voltage source that generates a reference voltage, and the reference voltage generated by the reference voltage. An output voltage of the linear regulator is supplied as a power supply voltage of a switching controller and the reference voltage source. The linear regulator is configured to enable switching of a regulation mode in which voltage is outputted according to the reference voltage, and a bypass mode in which an input voltage is outputted as it is, with no relation to the reference voltage. When a power supply apparatus is started up, during a time period until the input voltage reaches a predetermined threshold voltage, the linear regulator operates in the bypass mode, and when the input voltage exceeds the threshold voltage, operates in the regulation mode.
摘要翻译：提供线性稳压器，其基于产生参考电压的参考电压源和由参考电压产生的参考电压来稳定输入电压。线性稳压器的输出电压作为开关控制器和参考电压源的电源电压提供。线性调节器被配置为使得能够根据参考电压切换输出电压的调节模式，并且其中输入电压原样输出的旁路模式与参考电压无关。当供电装置启动时，在直到输入电压达到预定阈值电压的时间段内，线性调节器以旁路模式工作，并且当输入电压超过阈值电压时，在调节模式下运行。

5. 发明申请

US20090273327A1 POWER SUPPLY DEVICE, ELECTRONIC DEVICE USING THE SAME, AND SEMICONDUCTOR DEVICE 有权
标题翻译：电源装置，使用其的电子装置和半导体装置
公开(公告)号：US20090273327A1
公开(公告)日：2009-11-05
申请号：US12096765
申请日：2006-11-30
申请人： Tomoyuki Ito , Yoichi Tamegai , Koki Tamakawa , Isao Yamamoto
发明人： Tomoyuki Ito , Yoichi Tamegai , Koki Tamakawa , Isao Yamamoto
IPC分类号： G05F1/10
CPC分类号： H02M3/33507 , H02M2001/0045
摘要： A linear regulator is provided which stabilizes an input voltage based on a reference voltage source that generates a reference voltage, and the reference voltage generated by the reference voltage. An output voltage of the linear regulator is supplied as a power supply voltage of a switching controller and the reference voltage source. The linear regulator is configured to enable switching of a regulation mode in which voltage is outputted according to the reference voltage, and a bypass mode in which an input voltage is outputted as it is, with no relation to the reference voltage. When a power supply apparatus is started up, during a time period until the input voltage reaches a predetermined threshold voltage, the linear regulator operates in the bypass mode, and when the input voltage exceeds the threshold voltage, operates in the regulation mode.
摘要翻译：提供线性稳压器，其基于产生参考电压的参考电压源和由参考电压产生的参考电压来稳定输入电压。线性稳压器的输出电压作为开关控制器和参考电压源的电源电压提供。线性调节器被配置为使得能够根据参考电压切换输出电压的调节模式，并且其中输入电压原样输出的旁路模式与参考电压无关。当供电装置启动时，在直到输入电压达到预定阈值电压的时间段内，线性调节器以旁路模式工作，并且当输入电压超过阈值电压时，在调节模式下运行。

6. 发明授权

US07592856B2 Charge pump circuit driver circuit having a plurality of oscillators 失效
标题翻译：具有多个振荡器的电荷泵电路驱动电路
公开(公告)号：US07592856B2
公开(公告)日：2009-09-22
申请号：US11792178
申请日：2005-11-18
申请人： Tomoyuki Ito , Isao Yamamoto
发明人： Tomoyuki Ito , Isao Yamamoto
IPC分类号： G05F1/10 , G05F3/02
CPC分类号： H02M3/07 , H05B33/0815 , Y02B20/346
摘要： A driver circuit for a charge pump circuit capable of switching between step-up ratios, may include a control unit which controls the charge pump circuit; a first oscillator outputting a first periodic signal; and a second oscillator outputting a second periodic signal employed for a time measurement for setting the step-up ratio and having a frequency set lower than the first periodic signal. When the step-up ratio of the charge pump circuit is larger than 1, the control unit turns on only the first oscillator to perform, based on the first periodic signal, a time measurement for setting the step-up ratio and the control of a step-up action of the charge pump circuit. When the step-up ratio of the charge pump circuit is 1, the control unit turns on only the second oscillator to perform the time measurement for setting up the step-up ratio based on the second periodic signal.
摘要翻译：用于能够切换升压比的电荷泵电路的驱动电路可以包括控制电荷泵电路的控制单元; 输出第一周期信号的第一振荡器; 以及输出用于时间测量的第二周期信号的第二振荡器，用于设定升压比并具有低于第一周期信号的频率。当电荷泵电路的升压比大于1时，控制单元仅基于第一周期信号接通第一振荡器，以执行用于设定升压比的时间测量和对升压比的控制电荷泵电路的升压动作。当电荷泵电路的升压比为1时，控制单元仅接通第二振荡器，以进行基于第二周期信号设定升压比的时间测量。

7. 发明申请

US20050219878A1 Boost circuit capable of step-up ratio control 有权
标题翻译：具有升压比控制的升压电路
公开(公告)号：US20050219878A1
公开(公告)日：2005-10-06
申请号：US11087795
申请日：2005-03-23
申请人： Tomoyuki Ito , Isao Yamamoto
发明人： Tomoyuki Ito , Isao Yamamoto
IPC分类号： G05F1/56 , H02M3/00 , H02M3/07 , H02M3/335
CPC分类号： H02M3/07
摘要： When a step-up ratio control circuit sets a step-up ratio of a charge pump circuit to 1.0 to enable a short mode, a path inside the charge pump circuit is short-circuited and a first transistor is completely turned on. This produces an inrush current derived from a battery voltage of a lithium ion battery flowing into the charge pump circuit. To address this, a constant current circuit is operated so that the first transistor is turned on slowly. Further, the operation of an oscillator and an operational amplifier is suspended when the short mode is enabled.
摘要翻译：当升压比控制电路将电荷泵电路的升压比设定为1.0以实现短模式时，电荷泵电路内部的路径短路，并且第一晶体管完全导通。这产生从流入电荷泵电路的锂离子电池的电池电压得到的浪涌电流。为了解决这个问题，运行恒流电路使得第一晶体管缓慢接通。此外，当短模式被使能时，振荡器和运算放大器的操作被暂停。

8. 发明申请

US20050093792A1 Light emitting element drive unit, display module having light emitting element drive unit and electronic apparatus equipped with such display module 审中-公开
标题翻译：发光元件驱动单元，具有发光元件驱动单元的显示模块和配备有该显示模块的电子设备
公开(公告)号：US20050093792A1
公开(公告)日：2005-05-05
申请号：US10976576
申请日：2004-10-29
申请人： Isao Yamamoto , Tomoyuki Ito
发明人： Isao Yamamoto , Tomoyuki Ito
IPC分类号： H01L33/00 , G09G3/20 , G09G3/32 , G09G3/36 , H05B33/08
CPC分类号： H05B33/0815 , H05B33/0803 , H05B33/0827
摘要： A drive unit for driving multiple groups of light emitting elements operable at different voltages, though the drive unit is adapted to operate the different groups by means of a step-up circuit providing a low voltage. The inventive step-up circuit steps up a power source voltage (Vcc) to a predetermined positive voltage (Vp), which is inverted to a negative voltage (Vn) by an inverted voltage generating circuit. A first light emitting element group (first LED group) operable at a low voltage is by the positive voltage (Vp), with low necessary voltage emit light on positive voltage and grand voltage, while a second light emitting element group (second LED group) operable at a higher voltage is driven by a combination of the positive voltage (Vp) and the negative voltage (Vn). Thus, energy loss in the drive unit is reduced, thereby improving the operating efficiency of the drive unit.
摘要翻译：驱动单元，用于驱动可在不同电压下操作的多组发光元件，尽管驱动单元适于通过提供低电压的升压电路来操作不同的组。本发明的升压电路通过反相电压发生电路将电源电压（Vcc）上升到预定的正电压（Vp），其被反相为负电压（Vn）。可以在低电压下工作的第一发光元件组（第一LED组）通过正电压（Vp），低必需电压在正电压和高电压下发光，而第二发光元件组（第二LED组）通过正电压（Vp）和负电压（Vn）的组合来驱动在较高电压下操作。因此，驱动单元中的能量损失降低，从而提高驱动单元的操作效率。

9. 发明申请

US20080094128A1 Charge Pump Circuit Driver Circuit Having A Plurality Of Oscillators 失效
标题翻译：具有多个振荡器的电荷泵电路驱动器电路
公开(公告)号：US20080094128A1
公开(公告)日：2008-04-24
申请号：US11792178
申请日：2005-11-18
申请人： Tomoyuki Ito , Isao Yamamoto
发明人： Tomoyuki Ito , Isao Yamamoto
IPC分类号： G05F1/10 , H02M3/155
CPC分类号： H02M3/07 , H05B33/0815 , Y02B20/346
摘要： In a driver circuit for a charge pump circuit capable of switching a step-up ratio, first and second oscillators oscillating at different frequencies are provided. The charge pump circuit is controlled by a control unit. The first oscillator outputs a first periodic signal required for the control unit to control the step-up action of the charge pump circuit. The second oscillator outputs a second periodic signal employed for a time measurement and having a frequency set lower than that of the first periodic signal. The control unit monitors the state of the driver circuit itself or the charge pump circuit and switches the step-up ratio of the charge pump circuit if a predetermined state continues for equal to or more than a predetermined period of time. The control unit turns on only the first oscillator when the step-up ratio of the charge pump circuit is lager than 1 to thereby perform the control of the step-up action and the time measurement based on the first periodic signal. On the other hand, when the step-up ratio is 1, the control unit turns on only the second oscillator and performs the time measurement based on the second periodic signal.
摘要翻译：在能够切换升压比的电荷泵电路的驱动电路中，提供以不同频率振荡的第一和第二振荡器。电荷泵电路由控制单元控制。第一振荡器输出控制单元所需的第一周期信号以控制电荷泵电路的升压动作。第二振荡器输出用于时间测量并具有低于第一周期信号的频率的第二周期信号。如果预定状态持续等于或大于预定时间段，则控制单元监视驱动器电路本身或电荷泵电路的状态，并切换电荷泵电路的升压比。当电荷泵电路的升压比大于1时，控制单元仅接通第一振荡器，由此执行基于第一周期信号的升压动作和时间测量的控制。另一方面，当升压比为1时，控制单元仅接通第二振荡器，并且基于第二周期信号执行时间测量。

10. 发明申请

US20080048737A1 Voltage Generating Circuit, Constant Current Circuit and Light Emitting Diode Driving Circuit 审中-公开
标题翻译：电压发生电路，恒流电路和发光二极管驱动电路
公开(公告)号：US20080048737A1
公开(公告)日：2008-02-28
申请号：US11791772
申请日：2005-10-26
申请人： Tomoyuki Ito , Isao Yamamoto
发明人： Tomoyuki Ito , Isao Yamamoto
IPC分类号： H02M3/155 , G05F1/00 , G05F1/577 , H03L5/00 , H03K3/015 , G06F3/038
CPC分类号： H05B33/0851
摘要： A voltage generating circuit includes a voltage generating unit which generates plural constant voltages, plural switches, a control signal generating unit and a decoding circuit. The switches select any one of the plural constant voltages generated from the voltage generating unit and outputs it from a voltage output terminal. The control signal generating unit generates plural control signals which are switched between a high level and a low level through trimming on plural fuse resistors. The decoding circuit controls the state of connection of the switches-according to the control signals. The reference voltage Vx output from the voltage output terminal is applied to an electric-current generating resistor through an operational amplifier and a transistor to generate a constant electric current.
摘要翻译：电压产生电路包括产生多个恒定电压的电压产生单元，多个开关，控制信号产生单元和解码电路。开关选择从电压产生单元产生的多个恒定电压中的任何一个，并从电压输出端子输出。控制信号生成单元通过对多个熔丝电阻进行修整来生成在高电平和低电平之间切换的多个控制信号。解码电路根据控制信号控制开关的连接状态。从电压输出端子输出的参考电压Vx通过运算放大器和晶体管施加到电流产生电阻器，以产生恒定的电流。

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