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31. 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。

32. 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。

33. 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。

34. 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。

35. 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。

36. 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。

37. 发明申请

US20070296388A1 Power supply circuit 有权
标题翻译：电源电路
公开(公告)号：US20070296388A1
公开(公告)日：2007-12-27
申请号：US11810940
申请日：2007-06-07
申请人： Yoshikazu Sasaki , Isao Yamamoto , Masao Yonemaru
发明人： Yoshikazu Sasaki , Isao Yamamoto , Masao Yonemaru
IPC分类号： G05F1/00
CPC分类号： G05F1/56 , H02M1/08 , H02M1/32
摘要： A power supply circuit includes a standard voltage generator, a regulator, a capacitor and a discharging circuit. The standard voltage generator is configured to generate a standard voltage. The regulator is configured to control an output voltage by use of a reference voltage based on the standard voltage outputted from the standard voltage generator, and to be capable of being switched ON/OFF. The capacitor is connected in parallel to the regulator between the standard voltage generator and the regulator. The discharging circuit is configured to discharge electrical charges from the capacitor while the regulator is in an OFF state.
摘要翻译：电源电路包括标准电压发生器，调节器，电容器和放电电路。标准电压发生器被配置为产生标准电压。调节器被配置为通过使用基于从标准电压发生器输出的标准电压的参考电压来控制输出电压并且能够被接通/断开。电容器与标准电压发生器和调节器之间的稳压器并联连接。放电电路被配置为在调节器处于OFF状态时从电容器放电电荷。

38. 发明申请

US20070262805A1 Start-up circuit and start-up method 有权
标题翻译：启动电路和启动方式
公开(公告)号：US20070262805A1
公开(公告)日：2007-11-15
申请号：US11801167
申请日：2007-05-09
申请人： Tetsuro Hashimoto , Akihito Ito , Yoshikazu Sasaki , Isao Yamamoto
发明人： Tetsuro Hashimoto , Akihito Ito , Yoshikazu Sasaki , Isao Yamamoto
IPC分类号： G06F1/04
CPC分类号： G06F1/24 , G06F1/26 , G06F1/28
摘要： A start-up circuit receives a start-up signal instructing start-up of an equipment mounted with the circuit, and executes a predetermined sequence when start-up is instructed by the start-up signal. An oscillator generates a clock signal. A sequence circuit receives the start-up signal and a clock signal output from the oscillator, measures time by counting the clock signal when the start-up signal transits to a predetermined level, and executes a predetermined event at a predetermined timing. The oscillator operates for a period where the start-up signal is at the predetermined level if the start-up signal is at the predetermined level during the period the power key of the equipment mounted with the circuit is being pushed.
摘要翻译：启动电路接收指示启动安装有电路的设备的启动信号，并且在启动信号指示启动时执行预定的顺序。振荡器产生时钟信号。序列电路接收启动信号和从振荡器输出的时钟信号，通过在启动信号转换到预定电平时对时钟信号进行计数来测量时间，并在预定定时执行预定事件。如果启动信号处于预定电平，则在启动信号处于预定电平的期间，振荡器工作在安装有电路的设备的电源键被按下的期间。

39. 发明申请

US20070132404A1 DC/DC converter 有权
标题翻译： DC / DC转换器
公开(公告)号：US20070132404A1
公开(公告)日：2007-06-14
申请号：US11635423
申请日：2006-12-07
申请人： Yoichi Tamegai , Isao Yamamoto
发明人： Yoichi Tamegai , Isao Yamamoto
IPC分类号： H05B41/36
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。

40. 发明授权

US07023236B2 Data transmission system and cable 失效
公开(公告)号：US07023236B2
公开(公告)日：2006-04-04
申请号：US10298543
申请日：2002-11-19
申请人： Isao Yamamoto
发明人： Isao Yamamoto
IPC分类号： H03K17/16
CPC分类号： H04L25/45
摘要： A data transmission system capable of transmitting data at high speed without being bound by a counterpart's power supply voltage can be realized. The data transmission system comprises multiple electronic equipment having individual power supplies, a cable for connecting between the multiple electronic equipment so as to transmit signals therebetween, digital data transmitting circuits extending, between the multiple electronic equipment and the cable and each having an open drain type output section at the transmitting end, and an input section provided with a pull-up type resistor at the receiving end, wherein the resistor and the output section are moved from the electronic equipment to the connector of the cable so that parasitic capacitance for restricting time constant of waveforms of signals when rising is changed from a capacitance to a small capacitance.

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