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公开(公告)号：US09866760B2
公开(公告)日：2018-01-09
申请号：US15403132
申请日：2017-01-10
Applicant: GOOGLE INC.
Inventor： Arvind Dorai , Anders Nelson , Brian Jonathan Conner
CPC classification number: H04N5/2354 , G03B15/05 , H04N5/2256 , H04N5/23245 , H04N5/33 , H05B33/0809 , H05B33/0818 , H05B33/083 , H05B33/0845
Abstract: This application discloses a lighting emitting diode (LED) illumination system that operates at least in a boost mode and a bypass mode. The LED illumination system includes a plurality of LEDs and bypass elements. Each bypass element is coupled in parallel with one or more LEDs, and configured to bypass them selectively in the bypass mode. A boost converter is configured to drive the LEDs. The boost converter includes a boost controller that is configured to enable the boost mode in response to a boost enable signal. In the boost mode, the boost controller is electrically coupled to control the boost converter to drive the LEDs by a boosted drive voltage, and in the bypass mode, the boost controller is deactivated to allow the boost converter to drive a subset of the LEDs by a regular drive voltage that is substantially lower than the boosted drive voltage.
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公开(公告)号：US20170126949A1
公开(公告)日：2017-05-04
申请号：US15403132
申请日：2017-01-10
Applicant: GOOGLE INC.
Inventor： Arvind Dorai , Anders Nelson , Brian Jonathan Conner
CPC classification number: H04N5/2354 , G03B15/05 , H04N5/2256 , H04N5/23245 , H04N5/33 , H05B33/0809 , H05B33/0818 , H05B33/083 , H05B33/0845
Abstract: This application discloses a lighting emitting diode (LED) illumination system that operates at least in a boost mode and a bypass mode. The LED illumination system includes a plurality of LEDs and bypass elements. Each bypass element is coupled in parallel with one or more LEDs, and configured to bypass them selectively in the bypass mode. A boost converter is configured to drive the LEDs. The boost converter includes a boost controller that is configured to enable the boost mode in response to a boost enable signal. In the boost mode, the boost controller is electrically coupled to control the boost converter to drive the LEDs by a boosted drive voltage, and in the bypass mode, the boost controller is deactivated to allow the boost converter to drive a subset of the LEDs by a regular drive voltage that is substantially lower than the boosted drive voltage.
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公开(公告)号：US09544485B2
公开(公告)日：2017-01-10
申请号：US14723276
申请日：2015-05-27
Applicant: GOOGLE INC.
Inventor： Brian Jonathan Conner , Anders Nelson , Arvind Dorai
CPC classification number: H04N5/2354 , G03B15/05 , H04N5/2256 , H04N5/23245 , H04N5/33 , H05B33/0809 , H05B33/0818 , H05B33/083 , H05B33/0845
Abstract: This application discloses a lighting emitting diode (LED) illumination system that operates at least in a boost mode and a bypass mode. The LED illumination system includes a plurality of LEDs and bypass elements. Each bypass element is coupled in parallel with one or more LEDs, and configured to bypass them selectively in the bypass mode. A boost converter is configured to drive the LEDs. The boost converter includes a boost controller that is configured to enable the boost mode in response to a boost enable signal. In the boost mode, the boost controller is electrically coupled to control the boost converter to drive the LEDs by a boosted drive voltage, and in the bypass mode, the boost controller is deactivated to allow the boost converter to drive a subset of the LEDs by a regular drive voltage that is substantially lower than the boosted drive voltage.
Abstract translation: 本申请公开了一种至少在升压模式和旁路模式下操作的照明发光二极管（LED）照明系统。 LED照明系统包括多个LED和旁路元件。 每个旁路元件与一个或多个LED并联耦合，并且被配置为以旁路模式选择性地旁路它们。 升压转换器配置为驱动LED。 升压转换器包括升压控制器，其被配置为响应于升压使能信号使能升压模式。 在升压模式下，升压控制器电耦合以控制升压转换器以通过升压的驱动电压来驱动LED，并且在旁路模式中，升压控制器被去激活，以允许升压转换器驱动LED的子集，由 正常驱动电压基本上低于升压的驱动电压。
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