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公开(公告)号：WO2018200403A3
公开(公告)日：2018-11-01
申请号：PCT/US2018/028929
申请日：2018-04-23
Inventor： ZHOU, Dayong , MELANSON, John, L.
IPC: G10K11/178
Abstract: The overall performance of an ANC system may be improved by configuring the ANC system to perform adaption in the frequency domain. The ANC systems may be configured to update an algorithm of an adaptive filter based, at least in part, on the first input signal, the second input signal, and a feedback signal that is based on an output of the adaptive filter. Updating may include changing parameters of the algorithm based on a SDR based, at least in part, on the first input signal. Updating may also include normalizing a step size and processing at least full band information for the input signal in a frequency domain to generate coefficient values for the algorithm. Updating may also include applying a frequency domain magnitude constraint on adaptive filter coefficients.
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公开(公告)号：WO2018200403A2
公开(公告)日：2018-11-01
申请号：PCT/US2018/028929
申请日：2018-04-23
Inventor： ZHOU, Dayong , MELANSON, John, L.
IPC: G10K11/178
CPC classification number: G10K11/178 , G10K11/17827 , G10K11/17854 , G10K11/17881 , G10K11/17885 , G10K2210/108 , G10K2210/1081 , G10K2210/3026 , G10K2210/3028 , G10K2210/3054 , H04M1/03 , H04M1/6008
Abstract: The overall performance of an ANC system may be improved by configuring the ANC system to perform adaption in the frequency domain. The ANC systems may be configured to update an algorithm of an adaptive filter based, at least in part, on the first input signal, the second input signal, and a feedback signal that is based on an output of the adaptive filter. Updating may include changing parameters of the algorithm based on a SDR based, at least in part, on the first input signal. Updating may also include normalizing a step size and processing at least full band information for the input signal in a frequency domain to generate coefficient values for the algorithm. Updating may also include applying a frequency domain magnitude constraint on adaptive filter coefficients.
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公开(公告)号：WO2018102370A1
公开(公告)日：2018-06-07
申请号：PCT/US2017/063639
申请日：2017-11-29
Applicant: CIRRUS LOGIC INTERNATIONAL SEMICONDUCTOR LTD. , ZANBAGHI, Ramin , DAS, Tejasvi , MELANSON, John, L. , THOMSEN, Axel
Inventor： ZANBAGHI, Ramin , DAS, Tejasvi , MELANSON, John, L. , THOMSEN, Axel
Abstract: A variable resistor may be coupled between a reference voltage source and components of an integrated circuit to reduce issues relating to thermal noise from a reference voltage signal generated by the reference voltage source. The variable resistor may be set to a low level during a first time period and a high level during a second time period, in which the time periods correspond to a sampling period of a switched-capacitor circuit. The low resistance time period may allow quick settling of an input reference voltage signal, whereas the high resistance time period may reduce a bandwidth of noise on a sampling capacitor coupled to the reference voltage signal. The variable resistor and switched-capacitor network may be used in an analog-to-digital converter (ADC), such as in audio circuits.
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公开(公告)号：WO2017030994A1
公开(公告)日：2017-02-23
申请号：PCT/US2016/046881
申请日：2016-08-12
Applicant: CIRRUS LOGIC INTERNATIONAL SEMICONDUCTOR LTD. , ZANBAGHI, Ramin , BRENNAN, Aaron , ALLEN, Daniel, J. , MELANSON, John, L.
Inventor： ZANBAGHI, Ramin , BRENNAN, Aaron , ALLEN, Daniel, J. , MELANSON, John, L.
CPC classification number: H03M1/14 , G06F17/11 , G11C27/024 , H03F3/005 , H03F3/45475 , H03F3/45959 , H03F2203/45421 , H03F2203/45512 , H03F2203/45544 , H03F2203/45551 , H03M1/124 , H03M1/1295 , H03M3/458 , H03M3/496 , H04R3/00 , H04R19/04 , H04R29/004 , H04R2420/05 , H04R2499/11
Abstract: An analog-to-digital converter (ADC) may include capability to sense and/or compensate for undesired effects when receiving input from a microphone. For example, a sense node may be provided between differential inputs, and that sense node separated from the differential inputs by two or more switches. The sense node may allow for a measurement of an average voltage of the differential inputs. The average voltage may be obtained activating the switches to sample the sampling capacitors coupled to the differential inputs. That average voltage may be used as common mode (CM) data. A controller may receive the CM data, along with differential mode (DM) data, and use the CM and DM data to determine undesired effects, such as DC or AC mismatch at the microphone interface. The controller may then generate a signal for applying compensation to the differential inputs to reduce or eliminate the undesired effects.
Abstract translation: 模数转换器（ADC）可以包括当从麦克风接收输入时感测和/或补偿不期望的效果的能力。 例如，可以在差分输入之间提供感测节点，并且感测节点可以由两个或更多个开关与差分输入分离。 感测节点可以允许差分输入的平均电压的测量。 可以获得平均电压来激活开关以采样耦合到差分输入的采样电容器。 该平均电压可以用作共模（CM）数据。 控制器可以与差分模式（DM）数据一起接收CM数据，并使用CM和DM数据来确定不期望的效果，例如麦克风接口处的DC或AC失配。 然后，控制器可以生成用于向差分输入施加补偿的信号，以减少或消除不期望的影响。
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5.发明申请ISOLATION OF SECONDARY TRANSFORMER WINDING CURRENT DURING AUXILIARY POWER SUPPLY GENERATION 审中-公开在辅助电源发电期间分离二次变压器绕组电流
公开(公告)号：WO2013090777A3
公开(公告)日：2014-08-07
申请号：PCT/US2012069843
申请日：2012-12-14
Applicant: CIRRUS LOGIC INC , MELANSON JOHN L , DRAKSHAPALLI PRASHANTH , MARU SIDDHARTH
Inventor： MELANSON JOHN L , MARU SIDDHARTH
CPC classification number: H02M3/33507 , H02M1/4258 , H02M1/44 , H02M3/33523 , H02M3/33561 , H02M3/33576 , H02M5/2576 , H02M7/217 , H02M2001/0006 , H02M2001/0048 , H05B33/0815 , H05B33/0845 , H05B37/02 , Y02B20/346 , Y02B20/347 , Y02B70/126 , Y02B70/1491
Abstract: An electronic system and method include a controller (206) to actively control power transfer from a primary winding (110) of a switching power converter to an auxiliary-winding (212) of an auxiliary power supply 214). The switching power converter is controlled and configured such that during transfer of power to the auxiliary-winding (212), the switching power converter does not transfer charge to one or more secondary-windings (116) of the switching power converter. Thus, the switching power converter isolates one or more secondary transformer winding currents (is) from an auxiliary-winding current. By isolating the charge delivered to the one or more secondary-windings (116) from charge delivered to the auxiliary-winding (212), the controller can accurately determine an amount of charge delivered to the secondary-windings (116) and, thus, to a load (108).
Abstract translation: 电子系统和方法包括控制器（206），用于主动地控制从开关功率转换器的初级绕组（110）到辅助电源214的辅助绕组（212）的功率传输。 开关电源转换器被控制和配置为使得在向辅助绕组（212）传递电力期间，开关功率转换器不将电荷传送到开关功率转换器的一个或多个次级绕组（116）。 因此，开关功率转换器将一个或多个次级变压器绕组电流与辅助绕组电流隔离。 通过将递送到一个或多个次级绕组（116）的电荷从输送到辅助绕组（212）的电荷中分离出来，控制器可以精确地确定输送到次级绕组（116）的电荷量， 到负载（108）。
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Patent Agency Ranking6.发明申请ISOLATION OF SECONDARY TRANSFORMER WINDING CURRENT DURING AUXILIARY POWER SUPPLY GENERATION 审中-公开在辅助电源发电期间分离二次变压器绕组电流
公开(公告)号：WO2013090777A2
公开(公告)日：2013-06-20
申请号：PCT/US2012/069843
申请日：2012-12-14
Applicant: CIRRUS LOGIC, INC. , MELANSON, John L. , DRAKSHAPALLI, Prashanth , MARU, Siddharth
Inventor： MELANSON, John L. , MARU, Siddharth
IPC: H02M3/335
CPC classification number: H02M3/33507 , H02M1/4258 , H02M1/44 , H02M3/33523 , H02M3/33561 , H02M3/33576 , H02M5/2576 , H02M7/217 , H02M2001/0006 , H02M2001/0048 , H05B33/0815 , H05B33/0845 , H05B37/02 , Y02B20/346 , Y02B20/347 , Y02B70/126 , Y02B70/1491
Abstract: An electronic system and method include a controller to actively control power transfer from a primary winding of a switching power converter to an auxiliary-winding of an auxiliary power supply. The switching power converter is controlled and configured such that during transfer of power to the auxiliary-winding, the switching power converter does not transfer charge to one or more secondary-windings of the switching power converter. Thus, the switching power converter isolates one or more secondary transformer winding currents from an auxiliary-winding current. By isolating the charge delivered to the one or more secondary-windings from charge delivered to the auxiliary-winding, the controller can accurately determine an amount of charge delivered to the secondary-windings and, thus, to a load.
Abstract translation: 电子系统和方法包括控制器，用于主动地控制从开关功率转换器的初级绕组到辅助电源的辅助绕组的功率传递。 开关电源转换器被控制和配置为使得在向辅助绕组传递电力时，开关功率转换器不将电荷传递到开关功率转换器的一个或多个次级绕组。 因此，开关功率转换器将一个或多个次级变压器绕组电流与辅助绕组电流隔离。 通过将输送到一个或多个次级绕组的电荷从传送到辅助绕组的电荷隔离，控制器可以精确地确定输送到次级绕组的电荷量，从而准确地确定负载。
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公开(公告)号：WO2012061774A3
公开(公告)日：2012-11-08
申请号：PCT/US2011059447
申请日：2011-11-04
Applicant: CIRRUS LOGIC INC , MELANSON JOHN L , KING ERIC J
Inventor： MELANSON JOHN L , KING ERIC J
CPC classification number: 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
Abstract: In at least one embodiment, a lighting system includes one, some, or all of a switch path, link path, and flyback path power dissipation circuits to actively and selectively control power dissipation of excess energy in a switching power converter of the lighting system. The flyback path power dissipation circuit dissipates power through a flyback path of the switching power converter. In at least one embodiment, the lighting system controls power dissipation through the flyback path by controlling a transformer primary current in the flyback path and, for example, limiting the primary current with a current source and dissipating power in the flyback switch and the current source.
Abstract translation: 在至少一个实施例中，照明系统包括开关路径，链路路径和反激路径功率耗散电路中的一个，一个或全部，以有源和选择性地控制照明系统的开关功率转换器中的多余能量的功率耗散。 反激路径功耗电路通过开关电源转换器的反激路径耗散功率。 在至少一个实施例中，照明系统通过控制回扫路径中的变压器初级电流来控制通过回扫路径的功率耗散，并且例如，利用电流源限制初级电流并且在回扫开关和电流源中消耗功率 。
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8.发明申请
公开(公告)号：WO2012128794A1
公开(公告)日：2012-09-27
申请号：PCT/US2011/061033
申请日：2011-11-16
Applicant: CIRRUS LOGIC, INC. , MELANSON, John, L. , KING, Eric, J.
Inventor： MELANSON, John, L. , KING, Eric, J.
CPC classification number: H05B37/02 , H05B33/0815 , H05B33/0851 , H05B39/048
Abstract: Electronic system (100) including a controller (402), which provides compatibility between an electronic light source (410) and a trailing edge dimmer (404). The controller is capable of predicting an estimated occurrence
Abstract translation: 电子系统（100）包括提供电子光源（410）和后缘调光器（404）之间的兼容性的控制器（402）。 控制器能够预测相位切断AC电压的下降沿，并且将相位切换电压从后沿转变到预定电压阈值。 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测值来预测相切切断AC电压的后沿的估计出现。
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9.发明申请SWITCHING POWER CONVERTER INPUT VOLTAGE APPROXIMATE ZERO CROSSING DETERMINATION 审中-公开切换电源转换器输入电压近似零交叉测量
公开(公告)号：WO2012061784A3
公开(公告)日：2012-07-05
申请号：PCT/US2011059462
申请日：2011-11-04
Applicant: CIRRUS LOGIC INC , KING ERIC J , MELANSON JOHN L
Inventor： KING ERIC J , MELANSON JOHN L
IPC: H02M1/08
CPC classification number: H03K17/13 , H05B33/0815 , H05B33/0845 , Y02B20/346
Abstract: In at least one embodiment, the controller senses a leading edge, phase cut AC input voltage value to a switching power converter during a cycle of the AC input voltage. The controller senses the voltage value at a time prior to a zero crossing of the AC input voltage and utilizes the voltage value to determine the approximate zero crossing. In at least one embodiment, by determining an approximate zero crossing of the AC input voltage, the controller is unaffected by any disturbances of the dimmer that could otherwise make detecting the zero crossing problematic. The particular way of determining an approximate zero crossing is a matter of design choice. In at least one embodiment, the controller approximates the AC input voltage using a function that estimates a waveform of the AC input voltage and determines the approximate zero crossing of the AC input voltage from the approximation of the AC input voltage.
Abstract translation: 在至少一个实施例中，控制器在交流输入电压的周期期间感测到开关功率转换器的前沿，相切割AC输入电压值。 控制器感测交流输入电压过零之前的电压值，并利用电压值来确定近似过零点。 在至少一个实施例中，通过确定AC输入电压的近似零交叉，控制器不受调光器的任何干扰影响，否则可能会使检测到零交叉问题。 确定近似过零点的具体方法是设计选择的问题。 在至少一个实施例中，控制器使用估计AC输入电压的波形的函数来近似AC输入电压，并根据AC输入电压的近似确定AC输入电压的近似过零点。
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10.发明申请SWITCHING POWER CONVERTER INPUT VOLTAGE APPROXIMATE ZERO CROSSING DETERMINATION 审中-公开开关电源变换器输入电压近似零交叉确定
公开(公告)号：WO2012061784A2
公开(公告)日：2012-05-10
申请号：PCT/US2011/059462
申请日：2011-11-04
Applicant: CIRRUS LOGIC, INC. , KING, Eric J. , MELANSON, John L.
Inventor： KING, Eric J. , MELANSON, John L.
IPC: H05B37/02
CPC classification number: H03K17/13 , H05B33/0815 , H05B33/0845 , Y02B20/346
Abstract: In at least one embodiment, the controller senses a leading edge, phase cut AC input voltage value to a switching power converter during a cycle of the AC input voltage. The controller senses the voltage value at a time prior to a zero crossing of the AC input voltage and utilizes the voltage value to determine the approximate zero crossing. In at least one embodiment, by determining an approximate zero crossing of the AC input voltage, the controller is unaffected by any disturbances of the dimmer that could otherwise make detecting the zero crossing problematic. The particular way of determining an approximate zero crossing is a matter of design choice. In at least one embodiment, the controller approximates the AC input voltage using a function that estimates a waveform of the AC input voltage and determines the approximate zero crossing of the AC input voltage from the approximation of the AC input voltage.
Abstract translation: 在至少一个实施例中，控制器在AC输入电压的周期期间感测前沿，相切AC输入电压值给开关功率变换器。 控制器在交流输入电压过零点之前的时间检测电压值，并利用该电压值确定近似过零点。 在至少一个实施例中，通过确定AC输入电压的近似过零点，控制器不受调光器的任何干扰的影响，否则可能使得检测过零点成为问题。 确定近似过零点的具体方式是设计选择的问题。 在至少一个实施例中，控制器使用估计AC输入电压的波形的函数来近似AC输入电压，并根据AC输入电压的近似来确定AC输入电压的近似过零点。
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