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1.发明授权公开(公告)号：US08502463B2
公开(公告)日：2013-08-06
申请号：US13031836
申请日：2011-02-22
IPC分类号： H05B39/02
CPC分类号： H05B33/089 , H05B33/0815 , Y02B20/347
摘要： An LED driver circuit prevents an increase in output voltage of a DC/DC converter in an open circuit condition associated with removal or failure of an LED lighting device. A DC power source provides a first DC voltage across positive and negative voltage rails. A DC/DC converter includes a switching element which when turned ON/OFF provides a second DC voltage across first and second ends of a capacitor which further define first and second LED lighting device connection terminals. A control circuit, upon receiving a drive power signal, turns ON/OFF the switching element to provide constant current control. A power supply circuit is coupled between the second LED lighting device connection terminal and the negative voltage rail and generates the drive power signal to the control circuit during a detected lighting condition. The power supply circuit further disables the drive power signal during a detected open circuit condition.
摘要翻译： LED驱动器电路防止在与LED照明装置的去除或故障相关的开路状态下DC / DC转换器的输出电压增加。 直流电源在正负电压轨上提供第一直流电压。 DC / DC转换器包括开关元件，其在接通/断开时提供跨越电容器的第一和第二端的第二DC电压，其进一步限定第一和第二LED照明器件连接端子。 控制电路在接收到驱动功率信号时，将开关元件接通/断开，以提供恒定的电流控制。 电源电路耦合在第二LED照明装置连接端子和负电压轨道之间，并且在检测到的照明条件期间产生到控制电路的驱动电力信号。 在检测到的开路状态期间，电源电路进一步禁止驱动电力信号。
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2.发明申请LED DRIVER CIRCUIT WITH OPEN LOAD DETECTION AND ASSOCIATED CONTROL METHOD 有权具有开路负载检测和相关控制方法的LED驱动电路公开(公告)号：US20110204823A1
公开(公告)日：2011-08-25
申请号：US13031836
申请日：2011-02-22
IPC分类号： H05B41/285
CPC分类号： H05B33/089 , H05B33/0815 , Y02B20/347
摘要： An LED driver circuit prevents an increase in output voltage of a DC/DC converter in an open circuit condition associated with removal or failure of an LED lighting device. A DC power source provides a first DC voltage across positive and negative voltage rails. A DC/DC converter includes a switching element which when turned ON/OFF provides a second DC voltage across first and second ends of a capacitor which further define first and second LED lighting device connection terminals. A control circuit, upon receiving a drive power signal, turns ON/OFF the switching element to provide constant current control. A power supply circuit is coupled between the second LED lighting device connection terminal and the negative voltage rail and generates the drive power signal to the control circuit during a detected lighting condition. The power supply circuit further disables the drive power signal during a detected open circuit condition.
摘要翻译： LED驱动器电路防止在与LED照明装置的去除或故障相关的开路状态下DC / DC转换器的输出电压增加。 直流电源在正负电压轨上提供第一直流电压。 DC / DC转换器包括开关元件，其在接通/断开时提供跨越电容器的第一和第二端的第二DC电压，其进一步限定第一和第二LED照明器件连接端子。 控制电路在接收到驱动功率信号时，将开关元件接通/断开，以提供恒定的电流控制。 电源电路耦合在第二LED照明装置连接端子和负电压轨道之间，并且在检测到的照明条件期间产生到控制电路的驱动电力信号。 在检测到的开路状态期间，电源电路进一步禁止驱动电力信号。
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公开(公告)号：US08390213B2
公开(公告)日：2013-03-05
申请号：US12697187
申请日：2010-01-29
IPC分类号： H05B37/02
CPC分类号： H05B33/0815 , H05B33/0809 , Y02B20/346 , Y02B20/348
摘要： An LED power-source circuit includes an input filter circuit including noise prevention capacitors and a line filter, a diode bridge connected to the input filter circuit, a smoothing capacitor connected to an output of the diode bridge and having a capacitance of 1 μF or less, a DC-DC conversion circuit connected to the smoothing capacitor, and an LED assembly connected to an output of the DC-DC conversion circuit. Grounding capacitors are coupled to ground from an input power line between the line filter and the diode bridge. The total capacitance from the input power line to ground is set to be 1/200 or less of that of the smoothing capacitor.
摘要翻译： LED电源电路包括具有防噪电容器和线路滤波器的输入滤波器电路，连接到输入滤波器电路的二极管电桥，连接到二极管桥的输出并具有1μF以下电容的平滑电容器 连接到平滑电容器的DC-DC转换电路和连接到DC-DC转换电路的输出的LED组件。 接地电容器从线路滤波器和二极管桥之间的输入电源线耦合到地。 从输入电源线到地线的总电容设置为平滑电容器的总电容的1/200以下。
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公开(公告)号：US20100231138A1
公开(公告)日：2010-09-16
申请号：US12697187
申请日：2010-01-29
IPC分类号： H05B41/36
CPC分类号： H05B33/0815 , H05B33/0809 , Y02B20/346 , Y02B20/348
摘要： An LED power-source circuit includes an input filter circuit including noise prevention capacitors and a line filter, a diode bridge connected to the input filter circuit, a smoothing capacitor connected to an output of the diode bridge and having a capacitance of 1 μF or less, a DC-DC conversion circuit connected to the smoothing capacitor, and an LED assembly connected to an output of the DC-DC conversion circuit. Grounding capacitors are coupled to ground from an input power line between the line filter and the diode bridge. The total capacitance from the input power line to ground is set to be 1/200 or less of that of the smoothing capacitor.
摘要翻译： LED电源电路包括具有防噪电容器和线路滤波器的输入滤波器电路，连接到输入滤波器电路的二极管电桥，连接到二极管桥的输出并具有1μF以下电容的平滑电容器 连接到平滑电容器的DC-DC转换电路和连接到DC-DC转换电路的输出的LED组件。 接地电容器从线路滤波器和二极管桥之间的输入电源线耦合到地。 从输入电源线到地线的总电容设置为平滑电容器的总电容的1/200以下。
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公开(公告)号：US20110248647A1
公开(公告)日：2011-10-13
申请号：US13083170
申请日：2011-04-08
IPC分类号： H05B37/02
CPC分类号： H02M1/36 , H02M3/156 , H05B33/0815 , H05B33/0821 , H05B33/0887
摘要： A lighting device reliably detects a status (i.e., existence or absence) of a load connection, and enables or disables power output based on the detected load connection status. The device includes a DC-DC converter having input and output terminals, and a DC current conducting element coupled across the output terminals. A load terminal is also coupled across the output terminals and configured to receive an LED unit. A load detection circuit coupled between an input terminal and the load terminal detects the connection status of an LED unit via a DC current passing through the load terminal, and controls a switching operation of the DC-DC converter based on the detected connection status. A diode coupled between the load terminal and the DC current conducting element blocks a DC current path from the input terminals to the load detection circuit through the DC current conducting element.
摘要翻译： 照明装置可靠地检测负载连接的状态（即，是否存在），并且基于检测到的负载连接状态来启用或禁用电力输出。 该装置包括具有输入和输出端子的DC-DC转换器和耦合在输出端子两端的直流电流传导元件。 负载端子也耦合在输出端子之间并被配置为接收LED单元。 耦合在输入端子和负载端子之间的负载检测电路经由穿过负载端子的直流电流来检测LED单元的连接状态，并且基于检测到的连接状态来控制DC-DC转换器的切换操作。 耦合在负载端子和直流导电元件之间的二极管通过直流电导体元件阻挡从输入端子到负载检测电路的直流电流路径。
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公开(公告)号：US08482222B2
公开(公告)日：2013-07-09
申请号：US13083170
申请日：2011-04-08
CPC分类号： H02M1/36 , H02M3/156 , H05B33/0815 , H05B33/0821 , H05B33/0887
摘要： A lighting device reliably detects a status (i.e., existence or absence) of a load connection, and enables or disables power output based on the detected load connection status. The device includes a DC-DC converter having input and output terminals, and a DC current conducting element coupled across the output terminals. A load terminal is also coupled across the output terminals and configured to receive an LED unit. A load detection circuit coupled between an input terminal and the load terminal detects the connection status of an LED unit via a DC current passing through the load terminal, and controls a switching operation of the DC-DC converter based on the detected connection status. A diode coupled between the load terminal and the DC current conducting element blocks a DC current path from the input terminals to the load detection circuit through the DC current conducting element.
摘要翻译： 照明装置可靠地检测负载连接的状态（即，是否存在），并且基于检测到的负载连接状态来启用或禁用电力输出。 该装置包括具有输入和输出端子的DC-DC转换器和耦合在输出端子两端的直流电流传导元件。 负载端子也耦合在输出端子之间并被配置为接收LED单元。 耦合在输入端子和负载端子之间的负载检测电路经由穿过负载端子的直流电流来检测LED单元的连接状态，并且基于检测到的连接状态来控制DC-DC转换器的切换操作。 耦合在负载端子和直流导电元件之间的二极管通过直流电导体元件阻挡从输入端子到负载检测电路的直流电流路径。
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公开(公告)号：US4502775A
公开(公告)日：1985-03-05
申请号：US464894
申请日：1983-02-08
申请人： Yoshifumi Kuroki
发明人： Yoshifumi Kuroki
CPC分类号： G03B15/05 , G03B7/16 , G03B2215/05
摘要： A camera flash photographing control device having a signal conversion element which generates step wave voltage for which a signal level is gradually varied as time passes, by the operation of a counter which receives a pulse signal. A signal conversion element is operated as an A-D converter in which digital signal output which corresponds to a required signal level is obtained by converting both analogue signals of luminance information of an object and iris information of a photographing lens into said required signal level at the time of light measurement before shutter release. A signal conversion element is operated as a digital-analogue converter in which analogue signal output which corresponds to a pulse signal is obtained by converting the digital signal input of film sensitivity information into a required pulse signal at the time of shutter control after shutter release. Digital signal output from a signal conversion element is stored in memory as camera photographing information at the time of shutter control and analogue signal output from a signal conversion element is sent as information on the degree of flash light emission at the time of shutter control.
摘要翻译： 一种具有信号转换元件的相机闪光摄影控制装置，其通过接收脉冲信号的计数器的操作产生信号电平随时间而逐渐变化的阶跃波电压。 信号转换元件作为AD转换器工作，其中对应于所需信号电平的数字信号输出是通过将对象的亮度信息的模拟信号和拍摄镜头的光圈信息两次转换为所需的信号电平获得的 快门释放前的光线测量。 信号转换元件作为数模转换器工作，其中对应于脉冲信号的模拟信号输出是通过在快门释放之后将快门控制时将胶片感光度信息的数字信号输入转换为所需的脉冲信号而获得的。 从信号转换元件输出的数字信号作为快门控制时的相机拍摄信息存储在存储器中，并且从信号转换元件输出的模拟信号作为关于快门控制时的闪光发光度的信息被发送。
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公开(公告)号：US4333719A
公开(公告)日：1982-06-08
申请号：US240422
申请日：1981-03-04
申请人： Satoshi Takami , Teruo Hagiwara , Toru Kando , Yoshifumi Kuroki
发明人： Satoshi Takami , Teruo Hagiwara , Toru Kando , Yoshifumi Kuroki
CPC分类号： G03B15/03 , G03B7/16 , G03B2215/0557
摘要： An adaptor for a camera for operating multiple flash units with a single camera device in which all of the flash units simultaneously emit light. Output signals from each of the flash units indicating that the corresponding individual flash unit is ready to emit light are coupled to corresponding inputs of a logical product circuit such as an AND gate. The single output of the AND gate is coupled to a single corresponding input of the camera device. The X contact of the camera device is coupled in common to the actuation terminals of each of the flash units.
摘要翻译： 用于使用单个相机设备操作多个闪光灯单元的相机适配器，其中所有闪光灯单元同时发光。 来自每个闪光单元的输出信号表示相应的单独闪光单元准备发光，被耦合到诸如“与”门的逻辑积电路的对应输入。 与门的单个输出耦合到相机设备的单个对应输入。 相机装置的X触点共同地耦合到每个闪光单元的致动端子。
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9.发明授权Switching power supply for an illumination device with precision current control 有权具有精密电流控制的照明装置的开关电源公开(公告)号：US08154214B2
公开(公告)日：2012-04-10
申请号：US12688152
申请日：2010-01-15
申请人： Yoshifumi Kuroki , Shunsuke Shibata
发明人： Yoshifumi Kuroki , Shunsuke Shibata
IPC分类号： H05B41/16
CPC分类号： H05B33/0857 , H05B33/0818 , Y02B20/347
摘要： A system and method for powering a light-emitting element in an illumination device includes a DC power supply with the light-emitting element coupled across a positive output terminal and a negative output terminal of the DC power supply. A switching element is coupled between the light-emitting element and the negative output terminal. An average current value across the light-emitting element is measured each time the switching element is turned on. A control circuit generates a PWM signal having a pulse width determined based on the calculated average current value and a predetermined target value, and applies the PWM signal to drive the switching element on and off in accordance with the determined pulse width, and a current is generated across the light-emitting element.
摘要翻译： 用于为照明装置中的发光元件供电的系统和方法包括具有连接在正输出端子上的发光元件和直流电源的负输出端子的直流电源。 开关元件耦合在发光元件和负输出端子之间。 每次开关元件接通时测量发光元件两端的平均电流值。 控制电路产生具有基于计算出的平均电流值和预定目标值确定的脉冲宽度的PWM信号，并且根据确定的脉冲宽度施加PWM信号来驱动开关元件的导通和截止，并且电流为 产生在发光元件两端。
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10.发明授权Ballast for a discharge lamp with integrated control circuit for controlling switching element of dc power supply and inverter circuit 有权用于控制直流电源和逆变器电路的开关元件的集成控制电路的放电灯镇流器公开(公告)号：US07378804B2
公开(公告)日：2008-05-27
申请号：US10499674
申请日：2002-12-26
IPC分类号： H05B41/16
CPC分类号： H05B41/282 , H02M7/53803 , H02M2001/007 , Y02B20/183
摘要： The ballast of the present invention includes a DC power supply, an inverter circuit, a load circuit, and an integrated control circuit. The integrated control circuit controls the switching elements of the DC power supply and the inverter circuit. The integrated control circuit includes a first control unit, a second control unit, and a driver circuit. The first control unit generates a first control signal for control of the switching element of the DC power supply. The second control unit generates a second control signal for control of the switching elements of the inverter circuit. The driver circuit provides drive signals for driving each one of the switching elements of said DC power supply and the inverter circuit in accordance with the first control signal and the second control signal. As mentioned above, control circuits for controlling the DC power supply and the inverter circuit are integrated into a single component, the number of components which are mounted on a printed circuit board is reduced.
摘要翻译： 本发明的镇流器包括直流电源，逆变器电路，负载电路和集成控制电路。 集成控制电路控制直流电源和逆变器电路的开关元件。 集成控制电路包括第一控制单元，第二控制单元和驱动电路。 第一控制单元生成用于控制直流电源的开关元件的第一控制信号。 第二控制单元生成用于控制逆变器电路的开关元件的第二控制信号。 所述驱动电路根据所述第一控制信号和所述第二控制信号，提供用于驱动所述直流电源和逆变器电路的各开关元件的驱动信号。 如上所述，用于控制直流电源和逆变器电路的控制电路集成到单个部件中，安装在印刷电路板上的部件的数量减少。
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