Circuit and Method for Controlling Light Emitting Device, and Integrated Circuit Therefor
    1.
    发明申请
    Circuit and Method for Controlling Light Emitting Device, and Integrated Circuit Therefor 失效
    用于控制发光装置的电路和方法及其集成电路

    公开(公告)号:US20110169423A1

    公开(公告)日:2011-07-14

    申请号:US13072714

    申请日:2011-03-27

    IPC分类号: H05B37/02

    摘要: The present invention provides a transistor switch on a light emitting device channel, the transistor switch receiving a control voltage VG. A current source circuit controls the current on the light emitting device channel, the current source circuit requiring a minimum voltage VR for normal operation. The present invention further provides a dynamic headroom controller circuit which compares a voltage VS at a current outflow end of the transistor switch with the voltage VR to determine the relationship between the voltage VS and the voltage VR when the control voltage VG is higher than a reference voltage VH, and adjusts the voltage difference between the voltage VS and the voltage VR accordingly.

    摘要翻译: 本发明提供一种在发光器件通道上的晶体管开关,晶体管开关接收控制电压VG。 电流源电路控制发光器件通道上的电流,电流源电路需要用于正常操作的最小电压VR。 本发明还提供了一种动态裕量控制器电路,其将晶体管开关的电流流出端处的电压VS与电压VR进行比较,以在控制电压VG高于参考电压时确定电压VS与电压VR之间的关系 电压VH,并且相应地调整电压VS和电压VR之间的电压差。

    Short circuit and open circuit protection for a boost converter
    2.
    发明申请
    Short circuit and open circuit protection for a boost converter 有权
    升压转换器的短路和开路保护

    公开(公告)号:US20100123978A1

    公开(公告)日:2010-05-20

    申请号:US12591381

    申请日:2009-11-18

    IPC分类号: H02H7/10

    摘要: A boost converter includes a load disconnect switch connected between a voltage input terminal and an inductor, a power switch connected to the inductor by a switching node, a diode connected between the switching node and a voltage output terminal, and an output capacitor connected to the voltage output terminal to provide an output voltage. A protection apparatus is connected to the load disconnect switch, switching node and power switch to monitor the voltage at the switching node and the output voltage to provide open circuit and short circuit protection for the boost converter.

    摘要翻译: 升压转换器包括连接在电压输入端子和电感器之间的负载断开开关,通过开关节点连接到电感器的电源开关,连接在开关节点和电压输出端子之间的二极管以及连接到开关节点的输出电容器 电压输出端子提供输出电压。 保护装置连接到负载断开开关,开关节点和电源开关,以监视开关节点处的电压和输出电压,为升压转换器提供开路和短路保护。

    Short circuit and open circuit protection for a boost converter
    3.
    发明授权
    Short circuit and open circuit protection for a boost converter 有权
    升压转换器的短路和开路保护

    公开(公告)号:US08363369B2

    公开(公告)日:2013-01-29

    申请号:US12591381

    申请日:2009-11-18

    IPC分类号: H02H3/20 H02H9/04

    摘要: A boost converter includes a load disconnect switch connected between a voltage input terminal and an inductor, a power switch connected to the inductor by a switching node, a diode connected between the switching node and a voltage output terminal, and an output capacitor connected to the voltage output terminal to provide an output voltage. A protection apparatus is connected to the load disconnect switch, switching node and power switch to monitor the voltage at the switching node and the output voltage to provide open circuit and short circuit protection for the boost converter.

    摘要翻译: 升压转换器包括连接在电压输入端子和电感器之间的负载断开开关,通过开关节点连接到电感器的电源开关,连接在开关节点和电压输出端子之间的二极管以及连接到开关节点的输出电容器 电压输出端子提供输出电压。 保护装置连接到负载断开开关,开关节点和电源开关,以监视开关节点处的电压和输出电压,为升压转换器提供开路和短路保护。

    High efficiency power system for a LED display system
    4.
    发明授权
    High efficiency power system for a LED display system 失效
    高效率的LED显示系统

    公开(公告)号:US08120287B2

    公开(公告)日:2012-02-21

    申请号:US12585481

    申请日:2009-09-16

    IPC分类号: H05B37/00

    CPC分类号: H05B33/0827

    摘要: A LED display system includes multiple LEDs, a power converter to produce a supply voltage for the LEDs, and multiple drivers to drive the LEDs. According to the maximum one of the forward voltages of the LEDs, the drivers provides a feedback signal for the supply voltage control, and the feedback signal is amplified or digitized to reduce the voltage drop in the global power line.

    摘要翻译: LED显示系统包括多个LED,用于产生LED的电源电压的功率转换器和用于驱动LED的多个驱动器。 根据LED的正向电压中的最大一个,驱动器提供用于电源电压控制的反馈信号,并且反馈信号被放大或数字化以减小全局电力线中的电压降。

    CURRENT CONTROL CIRCUIT AND METHOD
    5.
    发明申请
    CURRENT CONTROL CIRCUIT AND METHOD 审中-公开
    电流控制电路和方法

    公开(公告)号:US20140167725A1

    公开(公告)日:2014-06-19

    申请号:US14043550

    申请日:2013-10-01

    IPC分类号: G05F3/02

    CPC分类号: H05B33/0824

    摘要: The invention provides a current control circuit and a current control method. The current control circuit controls a current supplied to a current-controlled device according to a conduction control signal. The current control circuit includes: a conduction control switch coupled to the current-controlled device, for determining whether to conduct the current according to the conduction control signal; and a plurality of current control switches connected to one another in series and coupled to the conduction control switch, for controlling a magnitude of the current.

    摘要翻译: 本发明提供电流控制电路和电流控制方法。 电流控制电路根据导通控制信号控制提供给电流控制装置的电流。 电流控制电路包括:耦合到电流控制装置的导通控制开关,用于根据导通控制信号确定是否导通电流; 以及串联连接到传导控制开关的多个电流控制开关,用于控制电流的大小。

    High efficiency power system for a LED display system
    6.
    发明申请
    High efficiency power system for a LED display system 失效
    高效率的LED显示系统

    公开(公告)号:US20100066257A1

    公开(公告)日:2010-03-18

    申请号:US12585481

    申请日:2009-09-16

    IPC分类号: H05B37/02

    CPC分类号: H05B33/0827

    摘要: A LED display system includes multiple LEDs, a power converter to produce a supply voltage for the LEDs, and multiple drivers to drive the LEDs. According to the maximum one of the forward voltages of the LEDs, the drivers provides a feedback signal for the supply voltage control, and the feedback signal is amplified or digitized to reduce the voltage drop in the global power line.

    摘要翻译: LED显示系统包括多个LED,用于产生LED的电源电压的功率转换器和用于驱动LED的多个驱动器。 根据LED的正向电压中的最大一个,驱动器提供用于电源电压控制的反馈信号,并且反馈信号被放大或数字化以减小全局电力线中的电压降。

    Circuit and method for controlling light emitting device, and integrated circuit therefor
    7.
    发明授权
    Circuit and method for controlling light emitting device, and integrated circuit therefor 失效
    用于控制发光器件的电路和方法及其集成电路

    公开(公告)号:US08405320B2

    公开(公告)日:2013-03-26

    申请号:US13072714

    申请日:2011-03-27

    IPC分类号: H05B37/02

    摘要: The present invention provides a transistor switch on a light emitting device channel, the transistor switch receiving a control voltage VG. A current source circuit controls the current on the light emitting device channel, the current source circuit requiring a minimum voltage VR for normal operation. The present invention further provides a dynamic headroom controller circuit which compares a voltage VS at a current outflow end of the transistor switch with the voltage VR to determine the relationship between the voltage VS and the voltage VR when the control voltage VG is higher than a reference voltage VH, and adjusts the voltage difference between the voltage VS and the voltage VR accordingly.

    摘要翻译: 本发明提供一种在发光器件通道上的晶体管开关,晶体管开关接收控制电压VG。 电流源电路控制发光器件通道上的电流,电流源电路需要用于正常操作的最小电压VR。 本发明还提供了一种动态裕量控制器电路,其将晶体管开关的电流流出端处的电压VS与电压VR进行比较,以在控制电压VG高于参考电压时确定电压VS与电压VR之间的关系 电压VH,并且相应地调整电压VS和电压VR之间的电压差。

    Light Emitting Device Array Billboard and Control Method Thereof
    8.
    发明申请
    Light Emitting Device Array Billboard and Control Method Thereof 有权
    发光装置阵列广告牌及其控制方法

    公开(公告)号:US20150156829A1

    公开(公告)日:2015-06-04

    申请号:US14539082

    申请日:2014-11-12

    IPC分类号: H05B33/08

    摘要: The present invention discloses a light emitting device array billboard and a control method thereof. The light emitting device array billboard includes a light emitting device array circuit, plural line switch circuits, plural channel switch circuits, plural ghost image compensation switch circuits, and a control circuit. The control circuit operates the line switch circuits and the channel switch circuit to turn ON a selected light emitting device for a duty period in a lighting period, and operates the plural ghost image compensation switch circuits to electrically connect a channel node corresponding to the selected light emitting device to a ghost image compensation voltage after the lighting period. The control circuit further adjusts a channel operation signal according to a gray scale compensation signal, to turn ON the selected light emitting device for a gray scale compensation period in addition to the duty period.

    摘要翻译: 本发明公开了一种发光装置阵列广告牌及其控制方法。 发光器件阵列广告牌包括发光器件阵列电路,多个线路开关电路,多个通道开关电路,多个重影图像补偿开关电路和控制电路。 控制电路操作线路开关电路和通道开关电路,以在点亮周期内接通所选择的发光器件占空比,并且操作多个重影图像补偿开关电路以电连接对应于所选择的光的通道节点 发光装置在发光周期之后的重影图像补偿电压。 控制电路根据灰度补偿信号进一步调整通道操作信号,除了占空比周期之外,还使所选择的发光器件接通灰度补偿期间。

    Light Emitting Device Array Billboard and Row Switch Circuit and Control Method Thereof
    10.
    发明申请
    Light Emitting Device Array Billboard and Row Switch Circuit and Control Method Thereof 审中-公开
    发光装置阵列广告牌和行开关电路及其控制方法

    公开(公告)号:US20140132165A1

    公开(公告)日:2014-05-15

    申请号:US14069772

    申请日:2013-11-01

    IPC分类号: H05B33/08

    CPC分类号: H05B33/0824

    摘要: The present invention discloses a light emitting device array billboard and a row switch circuit and a control method thereof. The light emitting device array billboard includes a light emitting device array circuit, plural row switch circuits, plural column driver circuits, and a control circuit. The light emitting device array circuit includes plural light emitting devices arranged by columns and rows. Each row switch circuit determines whether to electrically connect a row conduction voltage to the corresponding row node or to discharge charges at the corresponding row node through a discharging path according to a row selection signal. Each column driver circuit determines whether or not to electrically connect a column conduction voltage to the corresponding column node according to a column selection signal. The control circuit provides the row selection signal and the column selection signal to the row switch circuits and the column driver circuits.

    摘要翻译: 本发明公开了一种发光装置阵列广告牌和行开关电路及其控制方法。 发光装置阵列广告牌包括发光装置阵列电路,多行开关电路,多列驱动电路和控制电路。 发光器件阵列电路包括由列和行排列的多个发光器件。 每行开关电路确定是否将行导通电压电连接到对应的行节点,或者通过根据行选择信号的放电路径来放电对应行节点处的电荷。 列列驱动器电路根据列选择信号来确定是否将列导通电压电连接到对应的列节点。 控制电路将行选择信号和列选择信号提供给行开关电路和列驱动电路。