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11. 发明授权

US08525710B1 Audio amplifier offset reduction using digital input/output comparisons 有权
标题翻译：使用数字输入/输出比较的音频放大器偏移量减少
公开(公告)号：US08525710B1
公开(公告)日：2013-09-03
申请号：US12750973
申请日：2010-03-31
申请人： Robin Matthew Tsang , Eric J. Swanson , John L. Melanson , John Christopher Tucker
发明人： Robin Matthew Tsang , Eric J. Swanson , John L. Melanson , John Christopher Tucker
IPC分类号： H03M1/06 , H03M1/66 , H03F99/00
CPC分类号： H03M1/0607 , H03F3/45475 , H03F3/45968 , H03F2203/45522 , H03F2203/45528 , H03M1/66 , H03M3/50
摘要： An offset correction circuit removes DC offset from an analog audio output signal by comparing transitions of digital audio values to which the analog output signal is related to the output of a monitor that monitors the analog output signal. The monitor may be a zero-crossing detector and the transitions of the digital signal that are compared may be transitions of the most-significant bit (MSB) of the digital audio values. A filtering algorithm or filter circuit may be used to average a result of the comparison of the transitions, so that the offset is slowly and accurately removed. A chopped or autozero comparator may be used to further reduce error in the offset determination.
摘要翻译：偏移校正电路通过比较模拟输出信号与监视模拟输出信号的监视器的输出相关的数字音频值的转换，从模拟音频输出信号中去除DC偏移。监视器可以是过零检测器，并且被比较的数字信号的转变可以是数字音频值的最高有效位（MSB）的转换。可以使用滤波算法或滤波器电路来平均转换的比较的结果，使得偏移被缓慢且精确地去除。可以使用斩波或自动调零比较器来进一步减少偏移确定中的误差。

12. 发明授权

US08487591B1 Power control system with power drop out immunity and uncompromised startup time 有权
标题翻译：功率控制系统具有掉电免疫力和无与伦比的启动时间
公开(公告)号：US08487591B1
公开(公告)日：2013-07-16
申请号：US12650547
申请日：2009-12-31
申请人： William A. Draper , John L. Melanson , Zhaohui He
发明人： William A. Draper , John L. Melanson , Zhaohui He
IPC分类号： H02J7/00
CPC分类号： H02J1/10 , H02J7/345 , H02J9/00 , H02J9/04 , H02J2001/006
摘要： A power control system provides immunity from power supply dropout for a controller without compromising a startup time of the controller. In at least one embodiment, the power control system includes separate startup and dropout immunity capacitors. In at least one embodiment, selection of the capacitance of the startup capacitor is independent of selection of the capacitance of the dropout immunity capacitance. In at least one embodiment, the startup capacitance can be minimized to provide sufficient energy for the controller to normally operate during one missed cycle of an input voltage and, thus, provide a minimum startup time for the controller. The capacitance of the dropout immunity capacitor can be maximized to provide sufficient energy for the controller to operate normally during a time period longer than one cycle of the input voltage.
摘要翻译：电源控制系统在不损害控制器的启动时间的情况下提供对控制器的电源供电缺陷的抗扰度。在至少一个实施例中，功率控制系统包括单独的启动和掉电抗扰电容器。在至少一个实施例中，启动电容器的电容的选择与压降抗扰电容的电容的选择无关。在至少一个实施例中，可以使启动电容最小化以提供足够的能量，以使控制器在输入电压的一个错过周期期间正常工作，并因此为控制器提供最小启动时间。可以使压差抗扰电容器的电容最大化，以提供足够的能量，使控制器在长于输入电压的一个周期的时间周期内正常工作。

13. 发明授权

US08482220B2 Lighting system with power factor correction control data determined from a phase modulated signal 有权
标题翻译：具有从相位调制信号确定的功率因数校正控制数据的照明系统
公开(公告)号：US08482220B2
公开(公告)日：2013-07-09
申请号：US13431569
申请日：2012-03-27
申请人： John L. Melanson
发明人： John L. Melanson
IPC分类号： H05B37/02
CPC分类号： H05B33/0815 , H03K17/18 , H03K17/567 , H03K17/687 , H03K17/6872 , H03K17/74 , H05B33/0809 , H05B33/0818 , H05B33/0845 , H05B33/0848 , H05B33/0851 , H05B33/0887 , Y02B20/346 , Y02B20/347 , Y10S315/04 , Y10S323/905
摘要： A light emitting diode (LED) lighting system includes a power factor correction (PFC) controller that determines at least one power factor correction control parameter from phase delays of a phase modulated signal. In at least one embodiment, a peak voltage of the phase modulated signal is a PFC control parameter used by the PFC controller to control power factor correction and generation of a link voltage by a PFC LED driver circuit. The phase delays are related to a peak voltage of the phase modulated signal. Thus, in at least one embodiment, detecting the phase delay in one or more cycles of the phase modulated signal allows the PFC controller to determine the peak voltage of the phase modulated signal.
摘要翻译：发光二极管（LED）照明系统包括功率因数校正（PFC）控制器，其从相位调制信号的相位延迟确定至少一个功率因数校正控制参数。在至少一个实施例中，相位调制信号的峰值电压是由PFC控制器使用的PFC控制参数，以通过PFC LED驱动器电路来控制功率因数校正和产生链路电压。相位延迟与相位调制信号的峰值电压有关。因此，在至少一个实施例中，在相位调制信号的一个或多个周期中检测相位延迟允许PFC控制器确定相位调制信号的峰值电压。

14. 发明授权

US08362707B2 Light emitting diode based lighting system with time division ambient light feedback response 有权
标题翻译：基于发光二极管的照明系统具有时分环境光反馈响应
公开(公告)号：US08362707B2
公开(公告)日：2013-01-29
申请号：US12495206
申请日：2009-06-30
申请人： William A. Draper , John L. Melanson
发明人： William A. Draper , John L. Melanson
IPC分类号： H05B33/08 , H05B37/02
CPC分类号： H05B33/0869 , H05B33/0872
摘要： A lighting system includes time division light output sensing and adjustment for ambient light. In at least one embodiment, time division light output sensing involves modulating power to a light emitting diode (LED) set, and the set of LEDs includes one or more LEDs. In at least one embodiment, each LED in the LED set is included in a single lamp, and, in at least one embodiment, the set of LEDs is contained in multiple lamps. In at least one embodiment, for each lamp, a controller modulates power to the LED set by selectively reducing power to the LED set using time division algorithm to allow a light sensor to sense the brightness of ambient light with a reduced contribution from the LED set. In at least one embodiment, a lighting system also includes time division light output sensing and adjustment for different spectra LEDs.
摘要翻译：照明系统包括对于环境光的时分光输出感测和调整。在至少一个实施例中，时分光输出感测涉及调制发光二极管（LED）组的功率，并且该组LED包括一个或多个LED。在至少一个实施例中，LED组中的每个LED包括在单个灯中，并且在至少一个实施例中，该组LED包含在多个灯中。在至少一个实施例中，对于每个灯，控制器通过使用时分算法选择性地降低对LED组的功率来调制LED组的功率，以允许光传感器以来自LED组的减少的贡献来感测环境光的亮度。在至少一个实施例中，照明系统还包括用于不同光谱LED的时分光输出感测和调整。

15. 发明申请

US20120299501A1 Switching Power Converter Control With Triac-Based Leading Edge Dimmer Compatibility 有权
标题翻译：开关电源转换器控制采用基于Triac的前沿调光器兼容性
公开(公告)号：US20120299501A1
公开(公告)日：2012-11-29
申请号：US13488580
申请日：2012-06-05
申请人： Michael A. Kost , Mauro L. Gaetano , John L. Melanson
发明人： Michael A. Kost , Mauro L. Gaetano , John L. Melanson
IPC分类号： H05B37/02
CPC分类号： H05B33/0815 , H05B33/0824 , Y02B20/346
摘要： In at least one embodiment, a controller allows triac-based dimmer to properly function and dim a load whose voltage is regulated by a switching power converter. In at least one embodiment, the switching power converter includes a switch to control voltage conversion of an input voltage to the switching power converter, wherein phase delays are introduced in the input voltage by a triac-based dimmer during a dimming period. In at least one embodiment, the controller is configured to control the switch of the switching power converter to establish an input resistance of the switching power converter during a dimming portion of the input voltage, wherein the input resistance allows the triac-based dimmer to phase modulate a supply voltage to the dimmer so that an output voltage of the dimmer has a substantially uninterrupted phase delay during each half-cycle of the supply voltage during the dimming period.
摘要翻译：在至少一个实施例中，控制器允许基于triac的调光器正确地对其电压由开关功率转换器调节的负载进行功能和调光。在至少一个实施例中，开关功率转换器包括用于控制输入电压到开关功率转换器的电压转换的开关，其中在调光期间通过基于三端双向可控硅的调光器在输入电压中引入相位延迟。在至少一个实施例中，控制器被配置为控制开关功率转换器的开关，以在输入电压的调光部分期间建立开关功率转换器的输入电阻，其中输入电阻允许基于triac的调光器相位调制到调光器的电源电压，使得调光器的输出电压在调光期间的电源电压的每个半周期期间具有基本上不间断的相位延迟。

16. 发明授权

US08311243B2 Energy-efficient consumer device audio power output stage 有权
标题翻译：节能消费者设备音频功率输出阶段
公开(公告)号：US08311243B2
公开(公告)日：2012-11-13
申请号：US11610496
申请日：2006-12-13
申请人： John Christopher Tucker , Daniel John Allen , John L. Melanson , Ammisetti Prasad
发明人： John Christopher Tucker , Daniel John Allen , John L. Melanson , Ammisetti Prasad
IPC分类号： H03F99/00
CPC分类号： H03G3/004 , H02M3/07 , H03F1/0227 , H03F1/025 , H03F3/183 , H03F2200/03 , H03F2200/211 , H03F2200/507 , H03G3/20 , H03G3/3031
摘要： An energy-efficient consumer device audio power output stage provides improved battery life and reduced power dissipation. A power supply having a selectable operating mode supplies the power supply rails to the power amplified output stage. The operating mode is controlled in conformity with the audio signal level, which may be determined from a volume control setting of the device and/or from a signal level detector that determines the amplitude of the signal being amplified. The power supply may be a charge pump in which the operating mode uses a capacitive divider to provide for selection of a power supply output voltage that is a rational fraction of the power supply output voltage in a full-voltage operating mode.
摘要翻译：节能消费者设备音频功率输出级提供更好的电池寿命和更低的功耗。具有可选操作模式的电源将电源轨提供给功率放大输出级。操作模式根据音频信号电平进行控制，音频信号电平可以根据设备的音量控制设置和/或从确定被放大的信号的幅度的信号电平检测器确定。电源可以是电荷泵，其中操作模式使用电容分压器来提供在全电压工作模式下选择作为电源输出电压的有效部分的电源输出电压。

17. 发明申请

US20120229046A1 Power Control System for Current Regulated Light Sources 有权
标题翻译：电流调节光源功率控制系统
公开(公告)号：US20120229046A1
公开(公告)日：2012-09-13
申请号：US13473839
申请日：2012-05-17
申请人： John L. Melanson
发明人： John L. Melanson
IPC分类号： H05B37/02
CPC分类号： H05B33/0815 , H05B33/0818 , Y02B20/347 , Y10S315/04
摘要： A light emitting diode (LED) lighting system includes a PFC and output voltage controller and a LED lighting power system. The controller advantageously operates from an auxiliary voltage less than a link voltage generated by the LED lighting power system. The common reference voltage allows all the components of lighting system to work together. A power factor correction switch and an LED drive current switch are coupled to the common reference node and have control node-to-common node, absolute voltage that allows the controller to control the conductivity of the switches. The LED lighting system can utilize feed forward control to concurrently modify power demand by the LED lighting power system and power demand of one or more LEDs. The LED lighting system can utilize a common current sense device to provide a common feedback signal to the controller representing current in at least two of the LEDs.
摘要翻译：发光二极管（LED）照明系统包括PFC和输出电压控制器以及LED照明电源系统。控制器有利地从小于由LED照明电力系统产生的链路电压的辅助电压进行操作。公共参考电压允许照明系统的所有组件一起工作。功率因数校正开关和LED驱动电流开关耦合到公共参考节点并具有控制节点到公共节点，允许控制器控制开关的电导率的绝对电压。 LED照明系统可以利用前馈控制来同时修改LED照明电源系统的功率需求和一个或多个LED的功率需求。 LED照明系统可以利用公共电流检测装置向控制器提供公共反馈信号，该控制器表示至少两个LED中的电流。

18. 发明申请

US20120181946A1 Lighting System With Power Factor Correction Control Data Determined From A Phase Modulated Signal 有权
公开(公告)号：US20120181946A1
公开(公告)日：2012-07-19
申请号：US13431569
申请日：2012-03-27
申请人： John L. Melanson
发明人： John L. Melanson
IPC分类号： H05B37/02
CPC分类号： H05B33/0815 , H03K17/18 , H03K17/567 , H03K17/687 , H03K17/6872 , H03K17/74 , H05B33/0809 , H05B33/0818 , H05B33/0845 , H05B33/0848 , H05B33/0851 , H05B33/0887 , Y02B20/346 , Y02B20/347 , Y10S315/04 , Y10S323/905
摘要： A light emitting diode (LED) lighting system includes a power factor correction (PFC) controller that determines at least one power factor correction control parameter from phase delays of a phase modulated signal. In at least one embodiment, a peak voltage of the phase modulated signal is a PFC control parameter used by the PFC controller to control power factor correction and generation of a link voltage by a PFC LED driver circuit. The phase delays are related to a peak voltage of the phase modulated signal. Thus, in at least one embodiment, detecting the phase delay in one or more cycles of the phase modulated signal allows the PFC controller to determine the peak voltage of the phase modulated signal.

19. 发明授权

US08188677B2 Multi-function duty cycle modifier 有权
标题翻译：多功能占空比修正器
公开(公告)号：US08188677B2
公开(公告)日：2012-05-29
申请号：US13206212
申请日：2011-08-09
申请人： John L. Melanson , John J. Paulos
发明人： John L. Melanson , John J. Paulos
IPC分类号： H05B37/00
CPC分类号： H05B33/0815 , Y10S315/04
摘要： A system and method modify phase delays of a periodic, phase modulated mains voltage to generate at least two independent items of information during each cycle of the periodic input signal. The independent items of information can be generated by, for example, independently modifying leading edge and trailing edge phase delays of each half cycle phase modulated mains voltage. Modifying phase delays for the leading and trailing edges of each half cycle of the phase modulated mains voltage can generate up to four independent items of data. The items of data can be converted into independent control signals to, for example, control drive currents to respective output devices such as light sources to provide multiple items of information per cycle.
摘要翻译：系统和方法修改周期性相位调制电源电压的相位延迟，以在周期性输入信号的每个周期期间产生至少两个独立的信息项。可以通过例如独立地修改每个半周期相位调制电源电压的前沿和后沿相位延迟来产生独立信息项。修改相位调制电源电压每个半周期的前沿和后沿的相位延迟可以生成多达四个独立的数据项。数据项目可以转换为独立的控制信号，例如将驱动电流控制到诸如光源的各个输出设备，以便每个周期提供多个信息项。

20. 发明申请

US20120112638A1 Thermal Management In A Lighting System Using Multiple, Controlled Power Dissipation Circuits 有权
标题翻译：使用多个受控功耗电路的照明系统中的热管理
公开(公告)号：US20120112638A1
公开(公告)日：2012-05-10
申请号：US13290003
申请日：2011-11-04
申请人： John L. Melanson , Eric J. King
发明人： John L. Melanson , Eric J. King
IPC分类号： H05B37/02
CPC分类号： H05K1/0203 , H05B33/08 , H05B33/0809 , H05B33/0812 , H05B33/0815 , H05B33/0818 , H05B33/0824 , H05B33/0827 , H05B33/0845 , H05B33/0851 , H05B33/0854 , H05B37/02 , Y02B20/19 , Y02B20/346 , Y02B20/347
摘要： A lighting system includes a controller that is configured to provide thermal management for the lighting system by distributing excess energy in the lighting system through multiple power dissipation circuits. In at least one embodiment, the lighting system is a phase cut compatible, dimmable lighting system having one or more light sources selected from a group consisting of at least one light emitting diode and at least one compact fluorescent lamp. In at least one embodiment, the controller is configured to control the plurality of power dissipation circuits in accordance with a thermal management strategy to dissipate the excess energy in the phase cut compatible, dimmable lighting system. The particular thermal management strategy is a matter of design choice. The power distribution circuits include two of more of: a controlled switch path power dissipation circuit, a controlled link path power dissipation circuit, and a controlled flyback path power dissipation circuit.
摘要翻译：照明系统包括控制器，其被配置为通过多个功率消耗电路在照明系统中分配多余的能量来为照明系统提供热管理。在至少一个实施例中，照明系统是具有从由至少一个发光二极管和至少一个紧凑型荧光灯组成的组中选择的一个或多个光源的相切兼容的可调光照明系统。在至少一个实施例中，控制器被配置为根据热管理策略来控制多个功率消耗电路，以耗散相切兼容的可调光照明系统中的多余能量。特定的热管理策略是设计选择的问题。功率分配电路包括以下两个中的一个：受控开关路径功耗电路，受控链路路径功耗电路和受控反激路径功耗电路。

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