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公开(公告)号：US20150312982A1
公开(公告)日：2015-10-29
申请号：US14261096
申请日：2014-04-24
Applicant: Cirrus Logic, Inc.
Inventor： John L. Melanson
IPC: H05B33/08
CPC classification number: H05B33/0815 , H05B33/0848 , Y02B20/347
Abstract: A light emitting diode (LED) lighting system and method are disclosed. The LED lighting system and method include an LED controller to accurately control a current in an LED system. The LED controller includes components to calculate, based on the current and an active time period of an LED current time period, an actual charge amount delivered to the LED system wherein the LED current time period is duty cycle modulated at a rate of greater than fifty (50) Hz and to utilize the actual charge amount to modify and provide a desired target charge amount to be delivered during a future active time period of the LED current time period. The LED system and method further involve components to compare the actual charge amount to a desired charge amount for the active time period and compensate for a difference between the actual charge amount and the desired charge amount during the future active time period.
Abstract translation: 公开了一种发光二极管（LED）照明系统和方法。 LED照明系统和方法包括用于精确地控制LED系统中的电流的LED控制器。 LED控制器包括基于LED当前时间段的当前时间和当前时间周期来计算传送到LED系统的实际充电量的组件，其中LED电流时间周期以大于50的速率进行占空比调制 （50）Hz，并且利用实际电荷量来修改并提供在LED当前时间段的未来有效时间段期间要传送的期望目标电荷量。 LED系统和方法还包括将实际电荷量与活动时间段期望的电荷量进行比较的部件，并补偿在未来的有效时间段期间实际电荷量与期望充电量之间的差值。
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公开(公告)号：US09167662B2
公开(公告)日：2015-10-20
申请号：US13774914
申请日：2013-02-22
Applicant: Cirrus Logic, Inc.
Inventor： Eric J. King , John L. Melanson , Daniel J. Baker , Mohit Sood , Rahul Singh
CPC classification number: H05B37/02 , H05B33/0815 , H05B33/0845
Abstract: In at least one embodiment, a system and method provide current compensation in a lighting system by controlling a lamp current to prevent a current through a triac-based dimmer from undershooting a holding current value. In at least one embodiment, at least one of the lamps includes a controller that controls circuitry in the lamp to draw more lamp current for a period of time than needed to illuminate a brightness of the lamp at a level corresponding to particular phase-cut angle of the supply voltage. By drawing more current than needed, the controller increases the dimmer current during the period of time to prevent the dimmer current from falling below the holding current value. In at least one embodiment, the period of time corresponds to a compensating pulse of the lamp current at a time when the dimmer current would otherwise fall below the holding current value.
Abstract translation: 在至少一个实施例中，系统和方法通过控制灯电流来提供照明系统中的电流补偿，以防止通过基于三端双向可控硅开关控制器的调光器的电流低于保持电流值。 在至少一个实施例中，灯中的至少一个包括控制器，该控制器控制灯中的电路，以在比与特定相切角对应的水平下照亮灯的亮度所需的时间段吸取更多的灯电流 的电源电压。 通过吸收比所需更多的电流，控制器在一段时间内增加调光器电流，以防止调光器电流降至保持电流值以下。 在至少一个实施例中，该时间段对应于当调光电流否则将低于保持电流值时的灯电流的补偿脉冲。
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83.发明授权公开(公告)号：US09155163B2
公开(公告)日：2015-10-06
申请号：US14012775
申请日：2013-08-28
Applicant: Cirrus Logic, Inc.
Inventor： John L. Melanson , Eric J. King
CPC classification number: H05B37/02 , H05B33/0815 , H05B33/0851 , H05B39/048
Abstract: In at least one embodiment, an electronic system includes a controller, and the controller provides compatibility between an electronic light source and a trailing edge dimmer. In at least one embodiment, the controller is capable of predicting an estimated occurrence of a trailing edge of a phase cut AC voltage and accelerating a transition of the phase cut AC voltage from the trailing edge to a predetermined voltage threshold. In at least one embodiment, the controller predicts an estimated occurrence of the trailing edge of the phase cut AC voltage on the basis of actual observations from one or more previous cycles of the phase cut AC voltage.
Abstract translation: 在至少一个实施例中，电子系统包括控制器，并且控制器提供电子光源和后缘调光器之间的兼容性。 在至少一个实施例中，控制器能够预测相切切AC电压的后沿的估计出现并且加速相切切断AC电压从后沿到预定电压阈值的转变。 在至少一个实施例中，控制器基于来自相切切断AC电压的一个或多个先前循环的实际观察值来预测相切切AC电压的后沿的估计出现。
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84.发明申请SYSTEMS AND METHODS FOR USING A SPEAKER AS A MICROPHONE IN A MOBILE DEVICE 有权在移动设备中使用扬声器作为麦克风的系统和方法公开(公告)号：US20150208176A1
公开(公告)日：2015-07-23
申请号：US14673387
申请日：2015-03-30
Applicant: Cirrus Logic, Inc.
Inventor： John L. Melanson , Eric Swanson
CPC classification number: H04R3/005 , H04R1/04 , H04R1/1041 , H04R3/04 , H04R19/02 , H04R19/04 , H04R2400/01 , H04R2499/11 , H04W52/0251 , H04W52/0254 , Y02D70/00 , Y02D70/1262 , Y02D70/142 , Y02D70/144 , Y02D70/164 , Y02D70/168
Abstract: In accordance with methods and systems of the present disclosure, a mobile device may include an enclosure adapted such that the enclosure is readily transported by a user of the mobile device, a speaker associated with the enclosure for generating sound, and a controller within the enclosure, communicatively coupled to the speaker. The controller may be configured to receive a signal from the speaker, the signal induced at least in part by sound incident on the speaker other than sound generated by the speaker and process the signal.
Abstract translation: 根据本公开的方法和系统，移动设备可以包括适于使得外壳容易地由移动设备的用户传输的外壳，与外壳相关联的用于产生声音的扬声器以及外壳内的控制器 通信地耦合到扬声器。 控制器可以被配置为从扬声器接收信号，所述信号至少部分地由入射在扬声器上的声音引起，而不是由扬声器产生的声音并且处理该信号。
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85.发明申请Lighting System with Power Factor Correction Control Data Determined from a Phase Modulated Signal 审中-公开具有功率因数校正控制数据的照明系统由相位调制信号确定公开(公告)号：US20150173146A1
公开(公告)日：2015-06-18
申请号：US14596617
申请日：2015-01-14
Applicant: Cirrus Logic, Inc.
Inventor： John L. Melanson
IPC: H05B33/08
CPC classification number: 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
Abstract: 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.
Abstract translation: 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。
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Patent Agency Ranking
86.发明授权Utilizing secondary-side conduction time parameters of a switching power converter to provide energy to a load 有权利用开关功率转换器的次级侧导通时间参数为负载提供能量公开(公告)号：US09024541B2
公开(公告)日：2015-05-05
申请号：US14201050
申请日：2014-03-07
Applicant: Cirrus Logic, Inc.
Inventor： Yanhui Xie , Michael A. Kost , John L. Melanson , Zhaohui He , Chris M. Franklin
CPC classification number: H02M3/33507 , H05B33/08 , H05B33/0815 , Y02B20/346
Abstract: A power distribution system includes controller of a switching power converter to control the switching power converter and determine one or more switching power converter control parameters. In at least one embodiment, the switching power converter utilizes a transformer to transfer energy from a primary-side of the transformer to a secondary-side of the transformer. In at least one embodiment, the switching power converter control parameters includes a secondary-side conduction time delay that represents a time delay between when the primary-side ceases conducting a primary-side current and the secondary-side begins to conduct a secondary-side current. In at least one embodiment, determining and accounting for this secondary-side conduction time delay increases the prediction accuracy of the secondary-side current value and accurate delivery of energy to a load when the controller does not directly sense the secondary-side current provided to the load.
Abstract translation: 配电系统包括开关电源转换器的控制器，以控制开关功率转换器并确定一个或多个开关功率转换器控制参数。 在至少一个实施例中，开关功率转换器利用变压器将能量从变压器的初级侧传递到变压器的次级侧。 在至少一个实施例中，开关功率转换器控制参数包括次级侧导通时间延迟，其表示在初级侧停止进行初级侧电流和次级侧之间的时间延迟开始进行二次侧 当前。 在至少一个实施例中，确定和计算该次级侧导通时间延迟增加了次级侧电流值的预测精度，并且当控制器不直接感测提供给 负载。
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87.发明申请TWO TERMINAL DRIVE OF BIPOLAR JUNCTION TRANSISTOR (BJT) FOR SWITCH-MODE OPERATION OF A LIGHT EMITTING DIODE (LED)-BASED BULB 有权双极型晶体管（BJT）的双端驱动器用于发光二极管（LED）的开关模式操作公开(公告)号：US20150028764A1
公开(公告)日：2015-01-29
申请号：US14444087
申请日：2014-07-28
Applicant: Cirrus Logic, Inc.
Inventor： Siddharth Maru , John L. Melanson , Rahul Singh , Eric King , Thirumalai Rengachari , Ramin Zanbaghi , Arnab Kumar Dutta
CPC classification number: H03K4/48 , H05B33/0815 , H05B37/02 , Y02B20/347
Abstract: A bipolar junction transistor (BJT) may be used in a power stage DC-to-DC converter, such as for LED-based light bulbs. The BJT may be switched on and off from a controller coupled to two terminals of the BJT. Through the two terminals, the control IC may dynamically adjust a reverse recovery time period of the BJT. The reverse recovery time period may be adjusted by changing an amount of base charge that accumulates on the BJT. Additional, the reverse recovery may be controlled through the use of a reverse base current source applied to the BJT after beginning switching off the BJT.
Abstract translation: 双极结型晶体管（BJT）可用于功率级DC-DC转换器，例如用于基于LED的灯泡。 BJT可以从耦合到BJT的两个端子的控制器接通和断开。 通过两个端子，控制IC可以动态地调整BJT的反向恢复时间段。 可以通过改变在BJT上积累的基本电荷的量来调整反向恢复时间段。 此外，可以通过在开始关闭BJT之后使用施加到BJT的反向基极电流源来控制反向恢复。
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88.发明授权Color mixing of electronic light sources with correlation between phase-cut dimmer angle and predetermined black body radiation function 有权电子光源的颜色混合与相位切割调光角度与预定的黑体辐射功能相关公开(公告)号：US08912734B2
公开(公告)日：2014-12-16
申请号：US13673879
申请日：2012-11-09
Applicant: Cirrus Logic, Inc.
Inventor： John L. Melanson , Alfredo R. Linz , Michael A. Kost , Sahil Singh
CPC classification number: H05B33/0863 , H05B33/0815 , H05B33/0866 , H05B33/0872
Abstract: A lighting system includes methods and systems to mix colors of light emitted from at least two LED emitters. In at least one embodiment, the lighting system includes a controller that responds to phase-cut angles of the dimming signal and correlates the phase-cut angles with a predetermined black body radiation function to dynamically adjust a color spectra of the mixed light in response to changes in phase cut angles of the phase-cut dimming level signal. In at least one embodiment, the controller utilizes the predetermined black body radiation function to dynamically adjust the color spectra of the mixed, emitted light in response to changes in phase cut angles of a phase-cut dimming level signal. In at least one embodiment, the predetermined black body radiation function specifies correlated color temperatures (CCTs) that model the CCTs of an actual non-LED based lamp, such as an incandescent lamp.
Abstract translation: 照明系统包括混合从至少两个LED发射器发射的光的颜色的方法和系统。 在至少一个实施例中，照明系统包括控制器，其对调光信号的相位角进行响应，并将相切角与预定的黑体辐射功能相关联，以响应于 切相调光电平信号的相位角变化。 在至少一个实施例中，控制器利用预定的黑体辐射功能来响应于相位切割调光电平信号的相位切换角度的变化来动态地调节混合的发射光的色谱。 在至少一个实施例中，预定黑体辐射功能规定了对诸如白炽灯的实际非LED基灯的CCT进行建模的相关色温（CCT）。
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公开(公告)号：US20140270312A1
公开(公告)日：2014-09-18
申请号：US13915767
申请日：2013-06-12
Applicant: Cirrus Logic, Inc.
Inventor： John L. Melanson , Eric Swanson
IPC: H04R1/04
CPC classification number: H04R3/005 , H04R1/04 , H04R1/1041 , H04R3/04 , H04R19/02 , H04R19/04 , H04R2400/01 , H04R2499/11 , H04W52/0251 , H04W52/0254 , Y02D70/00 , Y02D70/1262 , Y02D70/142 , Y02D70/144 , Y02D70/164 , Y02D70/168
Abstract: In accordance with methods and systems of the present disclosure, a mobile device may include an enclosure adapted such that the enclosure is readily transported by a user of the mobile device, a speaker associated with the enclosure for generating sound, and a controller within the enclosure, communicatively coupled to the speaker. The controller may be configured to receive a signal from the speaker, the signal induced at least in part by sound incident on the speaker other than sound generated by the speaker and process the signal.
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90.发明申请Utilizing Secondary-Side Conduction Time Parameters of a Switching Power Converter to Provide Energy to a Load 有权利用开关电源转换器的次级侧传导时间参数为负载提供能量公开(公告)号：US20140252981A1
公开(公告)日：2014-09-11
申请号：US14201050
申请日：2014-03-07
Applicant: Cirrus Logic, Inc.
Inventor： Yanhui Xie , Michael A. Kost , John L. Melanson , Zhaohui He , Chris M. Franklin
CPC classification number: H02M3/33507 , H05B33/08 , H05B33/0815 , Y02B20/346
Abstract: A power distribution system includes controller of a switching power converter to control the switching power converter and determine one or more switching power converter control parameters. In at least one embodiment, the switching power converter utilizes a transformer to transfer energy from a primary-side of the transformer to a secondary-side of the transformer. In at least one embodiment, the switching power converter control parameters includes a secondary-side conduction time delay that represents a time delay between when the primary-side ceases conducting a primary-side current and the secondary-side begins to conduct a secondary-side current. In at least one embodiment, determining and accounting for this secondary-side conduction time delay increases the prediction accuracy of the secondary-side current value and accurate delivery of energy to a load when the controller does not directly sense the secondary-side current provided to the load.
Abstract translation: 配电系统包括开关电源转换器的控制器，以控制开关功率转换器并确定一个或多个开关功率转换器控制参数。 在至少一个实施例中，开关功率转换器利用变压器将能量从变压器的初级侧传递到变压器的次级侧。 在至少一个实施例中，开关功率转换器控制参数包括次级侧导通时间延迟，其表示在初级侧停止进行初级侧电流和次级侧之间的时间延迟开始进行二次侧 当前。 在至少一个实施例中，确定和计算该次级侧导通时间延迟增加了次级侧电流值的预测精度，并且当控制器不直接感测提供给 负载。
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