公开(公告)号：US10531533B1

公开(公告)日：2020-01-07

申请号：US16558326

申请日：2019-09-03

申请人： IML International

发明人： Horng-Bin Hsu ,  Yi-Mei Li

IPC分类号： H05B37/00 ,  H05B33/08 ,  H05B37/02

摘要： An LED lighting system includes a luminescent unit driven by a rectified AC voltage and a bleeder circuit. The bleeder circuit includes a current source, a dimming detection unit and an adjusting unit. The current source is configured to provide a bleeder current according to a control signal. The dimming detection unit is configured to monitor the rectified AC voltage, thereby outputting a dimming detection signal associated with an operational mode of the LED lighting system. The adjusting unit is configured to output the control signal according to the dimming detection signal so as to instruct the current source to keep the bleeder current at a first value during a first period and at a second value smaller than the first value during a second period subsequent to the first period when the dimming detection signal indicates that the LED lighting system is operating in a dimming mode.

公开(公告)号：US10283076B1

公开(公告)日：2019-05-07

申请号：US14993965

申请日：2016-01-12

申请人： IML International

发明人： Heonsu Kim ,  Nakchoon Choi

IPC分类号： G06F3/038 ,  G09G5/00 ,  G09G3/3208 ,  G09G3/34 ,  G09G3/36

摘要： A technique analyzes an image to be displayed on a screen, before it is displayed, to determine a current draw of that image on the screen. Based on this analysis, adjustments can be made to the circuitry so that when the image is displayed, it is done so more efficiently. In a specific implementation, a DC-to-DC converter includes two boost converter circuits. Based on the analyzed image, the technique turns on a single boost converter when the current draw of that image is below an identified current threshold level, and turns on two boost converters when above the identified current threshold level.

公开(公告)号：US09554428B2

公开(公告)日：2017-01-24

申请号：US14838329

申请日：2015-08-27

申请人： IML International

发明人： Horng-Bin Hsu ,  Yung-Hsin Chiang ,  Yi-Mei Li

IPC分类号： H05B33/08

CPC分类号： H05B33/0812 ,  Y02B20/345 ,  Y02B20/348

摘要： An LED lighting device driven by a rectified AC voltage includes a luminescent device, a charge storage unit and a current controller. The charge storage unit is configured to turn on the luminescent device when the rectified AC voltage is still insufficient to turn on the luminescent device. The current control unit is configured to allow the LED lighting device to have constant luminance regardless of the level of the rectified AC voltage, thereby improving flicker phenomenon.

摘要翻译： 由整流的AC电压驱动的LED照明装置包括发光装置，电荷存储单元和电流控制器。 电荷存储单元被配置为当整流的AC电压仍不足以导通发光装置时接通发光装置。 电流控制单元被配置为允许LED照明装置具有恒定的亮度，而与整流的AC电压的电平无关，从而改善闪烁现象。

公开(公告)号：US20160150610A1

公开(公告)日：2016-05-26

申请号：US14872116

申请日：2015-09-30

申请人： IML International

发明人： Horng-Bin Hsu ,  Yung-Hsin Chiang

IPC分类号： H05B33/08

CPC分类号： H05B33/083

摘要： An LED lighting device includes first and second luminescent units, first and second current controllers, a line voltage sensing unit and a mode control unit. The first current controller with a first current setting is selectively coupled to the first luminescent unit according to a sensing voltage associated a range of the rectified AC voltage. The second current controller with a second current setting is coupled in series to the second luminescent unit . The line voltage sensing unit is configured to detect the sensing voltage. The mode control unit is configured to operate the LED lighting device in a first driving mode when detecting that the rectified AC voltage is within a first AC range and operate the LED lighting device in a second driving mode when detecting that the rectified AC voltage is within a second AC range.

摘要翻译： LED照明装置包括第一和第二发光单元，第一和第二电流控制器，线路电压感测单元和模式控制单元。 根据与整流的AC电压的范围相关联的感测电压，具有第一电流设置的第一电流控制器选择性地耦合到第一发光单元。 具有第二电流设置的第二电流控制器与第二发光单元串联耦合。 线路电压感测单元被配置为检测感测电压。 模式控制单元被配置为当检测到整流的AC电压处于第一AC范围内时以第一驱动模式操作LED照明装置，并且当检测到整流的AC电压在内部时，以第二驱动模式操作LED照明装置 第二个交流范围。

公开(公告)号：US09166566B1

公开(公告)日：2015-10-20

申请号：US14685532

申请日：2015-04-13

申请人： IML International

发明人： Alberto Giovanni Viviani ,  ChinFa Kao ,  Chiayao S. Tung

IPC分类号： H03K5/00 ,  H03K3/01 ,  H01L25/00

CPC分类号： G09G3/3696 ,  G09G3/3611 ,  G09G3/3614 ,  G09G3/3655 ,  G09G2310/027 ,  G09G2320/0247 ,  H01L25/50 ,  H03K3/01 ,  H03K3/012 ,  H03K5/13

摘要： One or more resistors or resistances are integrated in a 7-bit DVR or PVCOM integrated circuit. A 7-bit DVR or PVCOM integrated circuit includes a 7-bit DAC. The integrated resistors or resistances (R1, R2, or RSET, or any combination) reduces the number of external components, reduces the number of pins, and increases the accuracy of the DVR or PVCOM circuit. The least significant bit (LSB) of the DAC depends only on ratios of internal resistors, which can be made very accurate and independent of temperature.

摘要翻译： 一个或多个电阻或电阻集成在7位DVR或PVCOM集成电路中。 7位DVR或PVCOM集成电路包括一个7位DAC。 集成的电阻或电阻（R1，R2或RSET或任何组合）可减少外部组件的数量，减少引脚数量，并提高DVR或PVCOM电路的精度。 DAC的最低有效位（LSB）仅取决于内部电阻的比例，内部电阻可以非常准确，并且与温度无关。

公开(公告)号：US09013109B2

公开(公告)日：2015-04-21

申请号：US14149838

申请日：2014-01-08

申请人： IML International

发明人： Yung-Hsin Chiang ,  Yi-Mei Li ,  Woung Moo Lee ,  Hwan Lim

IPC分类号： H05B33/08 ,  H05B37/02

CPC分类号： H05B33/083

摘要： An LED lighting device includes a first luminescent device, a second luminescent device, a first current controller and a second current controller. The first current controller is coupled in parallel with the first luminescent device and configured to operate according to a first current setting, a switch-on voltage and a switch-off voltage. The second current controller is coupled in series to the second luminescent device and configured to operate according to a second current setting. The first current setting, the second current setting, the switch-on voltage and the switch-off voltage are adjusted by setting the mode selection pins of the first and second current controllers.

摘要翻译： LED照明装置包括第一发光装置，第二发光装置，第一电流控制器和第二电流控制器。 第一电流控制器与第一发光装置并联并被配置为根据第一电流设置，接通电压和关断电压进行操作。 第二电流控制器串联耦合到第二发光装置并被配置为根据第二电流设置进行操作。 通过设置第一和第二电流控制器的模式选择引脚来调整第一电流设置，第二电流设置，接通电压和关断电压。

公开(公告)号：US09007098B1

公开(公告)日：2015-04-14

申请号：US13783174

申请日：2013-03-01

申请人： IML International

发明人： Alberto Giovanni Viviani ,  ChinFa Kao ,  Chiayao S. Tung

IPC分类号： H03K5/00 ,  H03K5/13 ,  H01L25/00

CPC分类号： G09G3/3696 ,  G09G3/3611 ,  G09G3/3614 ,  G09G3/3655 ,  G09G2310/027 ,  G09G2320/0247 ,  H01L25/50 ,  H03K3/01 ,  H03K3/012 ,  H03K5/13

摘要： One or more resistors or resistances are integrated in a 7-bit DVR or PVCOM integrated circuit. 7-bit DVR or PVCOM integrated circuit includes a 7-bit DAC. The integrated resistors or resistances (R1, R2, or RSET, or any combination) reduces the number of external components, reduces the number of pins, increases the accuracy of the DVR or PVCOM circuit. The least significant bit (LSB) of the DAC depends only on ratios of internal resistors, which can be made very accurate and independent of temperature.

摘要翻译： 一个或多个电阻或电阻集成在7位DVR或PVCOM集成电路中。 7位DVR或PVCOM集成电路包括一个7位DAC。 集成的电阻或电阻（R1，R2或RSET或任何组合）减少了外部元件的数量，减少了引脚数，增加了DVR或PVCOM电路的精度。 DAC的最低有效位（LSB）仅取决于内部电阻的比例，内部电阻可以非常准确，并且与温度无关。

公开(公告)号：US20140339990A1

公开(公告)日：2014-11-20

申请号：US13972854

申请日：2013-08-21

申请人： IML International

发明人： Horng-Bin Hsu ,  Yi-Mei Li ,  Yung-Hsin Chiang

IPC分类号： H05B33/08

CPC分类号： H05B33/083

摘要： An LED lighting device includes multiple driving stages. A first driving stage includes a first luminescent device driven by a first current and a first current controller coupled in parallel with the first luminescent device. The first current controller is configured to conduct a second current according to a voltage established across the first current controller and regulate the second current so that a sum of the first current and the second current does not exceed a first value. The second driving stage includes a second luminescent device driven by a third current and a second current controller coupled in series to the second luminescent device. The second current controller is configured to conduct a fourth current according to a voltage established across the second current controller and regulate the fourth current so that a sum of the third current and the fourth current does not exceed a second value.

摘要翻译： LED照明装置包括多个驱动阶段。 第一驱动级包括由第一电流驱动的第一发光器件和与第一发光器件并联耦合的第一电流控制器。 第一电流控制器被配置为根据在第一电流控制器上建立的电压来传导第二电流，并调节第二电流，使得第一电流和第二电流之和不超过第一值。 第二驱动级包括由第三电流驱动的第二发光装置和与第二发光装置串联耦合的第二电流控制器。 第二电流控制器被配置为根据在第二电流控制器上建立的电压来传导第四电流，并调节第四电流，使得第三电流和第四电流之和不超过第二值。

公开(公告)号：US20140217908A1

公开(公告)日：2014-08-07

申请号：US14149838

申请日：2014-01-08

申请人： IML International

发明人： Yung-Hsin Chiang ,  Yi-Mei Li ,  Woung Moo Lee ,  Hwan Lim

IPC分类号： H05B33/08

CPC分类号： H05B33/083

摘要： An LED lighting device includes a first luminescent device, a second luminescent device, a first current controller and a second current controller. The first current controller is coupled in parallel with the first luminescent device and configured to operate according to a first current setting, a switch-on voltage and a switch-off voltage. The second current controller is coupled in series to the second luminescent device and configured to operate according to a second current setting. The first current setting, the second current setting, the switch-on voltage and the switch-off voltage are adjusted by setting the mode selection pins of the first and second current controllers.

摘要翻译： LED照明装置包括第一发光装置，第二发光装置，第一电流控制器和第二电流控制器。 第一电流控制器与第一发光装置并联并被配置为根据第一电流设置，接通电压和关断电压进行操作。 第二电流控制器串联耦合到第二发光装置并被配置为根据第二电流设置进行操作。 通过设置第一和第二电流控制器的模式选择引脚来调整第一电流设置，第二电流设置，接通电压和关断电压。

公开(公告)号：US08638047B2

公开(公告)日：2014-01-28

申请号：US13743345

申请日：2013-01-17

申请人： IML International

发明人： Yung-Hsin Chiang ,  Yi-Mei Li ,  Alberto Giovanni Viviani

IPC分类号： H05B37/02

CPC分类号： H02M7/06 ,  H05B33/0824 ,  H05B33/083 ,  H05B37/02

摘要： A two-terminal current controller having a current limiting unit and an adjusting unit regulates a first current flowing through a load according to a load voltage. When the load voltage does not exceed a first voltage, the two-terminal current controller operates in a first mode for conducting a second current associated a rectified AC voltage, thereby limiting the first current to zero and adjusting the second current accordingly. When the load voltage is between the first voltage and a second voltage, the two-terminal current controller operates in a second mode for conducting the second current, thereby limiting the first current to zero and limiting the second current to a constant value larger than zero. When the load voltage exceeds the second voltage, the two-terminal current controller operates in a third mode for turning off the current limiting unit. The adjusting unit can adjust the predetermined value and the second voltage.