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1.发明申请
公开(公告)号：WO2016032598A3
公开(公告)日：2016-07-14
申请号：PCT/US2015036151
申请日：2015-06-17
Applicant: CIRRUS LOGIC INC
Inventor： MELANSON JOHN L , SINGH RAHUL , DRAKSHAPALLI PRASHANTH , BRUMMEL DALE , HODAPP STEPHEN T
Abstract: A low power analog-to-digital converter configured to sense sensor signals may include a loop filter and a feedback digital-to-analog converter. The loop filter may have a loop filter input configured to receive an input current signal from a sensor and generate an output signal responsive to the input current signal. The feedback digital-to-analog converter may have a feedback output configured to generate a current-mode or charge-mode feedback output signal responsive to the output signal, the feedback output coupled to the loop filter input in order to combine the input current signal and the feedback output signal at the input.
Abstract translation: 被配置为感测传感器信号的低功率模数转换器可以包括环路滤波器和反馈数模转换器。 环路滤波器可以具有环路滤波器输入，其被配置为从传感器接收输入电流信号，并响应于输入电流信号产生输出信号。 反馈数模转换器可以具有被配置为响应于输出信号产生电流模式或电荷模式反馈输出信号的反馈输出，反馈输出耦合到环路滤波器输入，以便组合输入电流信号 和输入端的反馈输出信号。
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公开(公告)号：WO2016069366A2
公开(公告)日：2016-05-06
申请号：PCT/US2015/056846
申请日：2015-10-22
Applicant: CIRRUS LOGIC, INC.
Inventor： KING, Eric J. , AMADI, Christophe J. , MELANSON, John L.
IPC: H03F1/02
CPC classification number: H03F3/2175 , H03F1/0277 , H03F1/083 , H03F3/181 , H03F3/185 , H03F3/217 , H03F3/2171 , H03F3/2173 , H03F3/2178 , H03F2200/03 , H03F2200/231
Abstract: A method for producing an output voltage to a load may include, in a power stage comprising power converter having a power inductor, a plurality of switches arranged to sequentially operate in a plurality of switch configurations, and an output for producing the output voltage comprising a first output terminal and a second output terminal, controlling the linear amplifier to transfer electrical energy from the input source of the power stage to the load in accordance with one or more least significant bits of a digital input signal, and controlling the power converter in accordance with bits of the digital input signal other than the one or more least significant bits to sequentially apply switch configurations from the plurality of switch configurations to selectively activate or deactivate each of the plurality of switches in order to transfer electrical energy from the input source of the power stage to the load.
Abstract translation: 用于产生到负载的输出电压的方法可以包括：在包括具有功率电感器的功率转换器的功率级中，布置成以多个开关配置顺序操作的多个开关，以及 输出用于产生包括第一输出端子和第二输出端子的输出电压，控制线性放大器根据数字输入信号的一个或多个最低有效位将电能从功率级的输入源传输到负载 以及根据除一个或多个最低有效位之外的数字输入信号的位来控制功率转换器，以顺序地应用来自多个开关配置的开关配置，以选择性地激活或去激活多个开关中的每一个以便传送 从功率级的输入源到负载的电能。
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3.发明申请SYSTEMS AND METHODS FOR SELECTIVELY ENABLING AND DISABLING ADAPTATION OF AN ADAPTIVE NOISE CANCELLATION SYSTEM 审中-公开选择适应噪声消除系统的选择和禁用系统和方法
公开(公告)号：WO2015191691A1
公开(公告)日：2015-12-17
申请号：PCT/US2015035073
申请日：2015-06-10
Applicant: CIRRUS LOGIC INC
Inventor： ALDERSON JEFFREY D , HENDRIX JON D , ZHOU DAYONG
IPC: G10K11/178 , G10L21/0208 , H04R1/10 , H04R3/00
CPC classification number: H04R1/1083 , G10K11/17854 , G10K11/17855 , G10K11/17881 , G10K2210/1081 , G10K2210/3016 , G10K2210/3026 , G10K2210/3028 , G10K2210/3045 , H04R3/005 , H04R5/033 , H04R2410/05 , H04R2499/11
Abstract: In accordance with the present disclosure, an adaptive noise cancellation system may include a controller. The controller may be configured to determine a degree of convergence of an adaptive coefficient control block for controlling an adaptive response of the adaptive noise cancellation system. The controller may enable adaptation of the adaptive coefficient control block if the degree of convergence of the adaptive response is below a particular threshold and disable adaptation of the adaptive coefficient control block if the degree of convergence of the adaptive response is above a particular threshold, such that when the adaptive noise cancellation system is adequately converged, the adaptive noise cancellation system may conserve power by disabling one or more of its components.
Abstract translation: 根据本公开，自适应噪声消除系统可以包括控制器。 控制器可以被配置为确定用于控制自适应噪声消除系统的自适应响应的自适应系数控制块的收敛度。 如果自适应响应的收敛程度低于特定阈值，则控制器可以实现自适应系数控制块的适应，并且如果自适应响应的收敛程度高于特定阈值，则禁止自适应系数控制块的适应，如 当自适应噪声消除系统充分收敛时，自适应噪声消除系统可以通过禁用其一个或多个组件来节省功率。
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公开(公告)号：WO2015187527A1
公开(公告)日：2015-12-10
申请号：PCT/US2015/033471
申请日：2015-06-01
Applicant: CIRRUS LOGIC, INC.
Inventor： AXELSSON, Jens-Peter B. , MELANSON, John L.
CPC classification number: H04R1/08 , H01L2224/48137 , H01L2924/16152 , H04R1/04 , H04R1/1083 , H04R3/002 , H04R3/005 , H04R2201/003 , H04R2410/01 , H04R2410/05 , H04R2499/11
Abstract: NOISE CANCELLATION MICROPHONES WITH SHARED BACK VOLUME A multi-microphone device includes a device package and a plurality of microphones. The device package defines a component cavity and a plurality of vias. The vias comprise openings in the device package extending between the component cavity and an exterior. The microphones are located within the component cavity sharing a back volume in common. The microphones are configured to generate electrical signals in accordance with acoustic pressure in the respective vias. Further, an audio apparatus includes a housing, a speaker and at least two microphones within the housing sharing a back volume in common. A first acoustical conduit extends from a first end in proximity to the first microphone to a first exterior location and a second acoustical conduit extends from a second end in proximity to the second microphone to a second exterior location.
Abstract translation: 具有共享背音量的噪声消除麦克风多麦克风设备包括设备封装和多个麦克风。 器件封装定义了元件腔和多个通孔。 通孔包括在部件空腔和外部之间延伸的器件封装中的开口。 麦克风位于共享共同背部体积的部件空腔内。 麦克风被配置为根据相应通孔中的声压产生电信号。 此外，音频设备包括壳体，扬声器和壳体内的至少两个麦克风共享共同的背部体积。 第一声导管从靠近第一麦克风的第一端延伸到第一外部位置，并且第二声导管从靠近第二麦克风的第二端延伸到第二外部位置。
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5.发明申请SYSTEMS AND METHODS FOR CONTROLLING COMMON MODE VOLTAGE OF MULTI-MODE POWER CONVERTER 审中-公开用于控制多模式功率转换器的共模电压的系统和方法
公开(公告)号：WO2015119958A4
公开(公告)日：2015-10-29
申请号：PCT/US2015014282
申请日：2015-02-03
Applicant: CIRRUS LOGIC INC
Inventor： KING ERIC J , MELANSON JOHN L
CPC classification number: H02M3/158 , H03F1/0227 , H03F1/0238 , H03F3/181 , H03F3/185 , H03F3/217 , H03F3/2178 , H03F2200/03 , H03F2200/504 , H04R1/00
Abstract: A switching power stage for producing an output voltage to a load may include a power converter and a controller. The power converter may include a power inductor and plurality of switches arranged to sequentially operate in a plurality of switch configurations. The controller may be configured to, based at least on an input signal to the switching power stage, determine the differential output voltage to be driven at the load, and based on the differential output voltage to be driven at the load, apply a switch configuration from the plurality of switch configurations to selectively activate or deactivate each of the plurality of switches in order to generate the differential output voltage.
Abstract translation: 用于向负载产生输出电压的开关功率级可以包括功率转换器和控制器。 功率转换器可以包括功率电感器和布置成以多个开关配置顺序操作的多个开关。 控制器可以被配置为至少基于到开关功率级的输入信号来确定要在负载处被驱动的差分输出电压并且基于要在负载处被驱动的差分输出电压来施加开关配置 从所述多个开关配置中选择性地激活或去激活所述多个开关中的每一个，以便产生所述差分输出电压。
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Patent Agency Ranking6.发明申请
公开(公告)号：WO2015161098A1
公开(公告)日：2015-10-22
申请号：PCT/US2015/026205
申请日：2015-04-16
Applicant: CIRRUS LOGIC, INC.
Inventor： MAZUMDAR, Poornima , SOOD, Mohit , SINGH, Rahul , SINGH, Sahil
CPC classification number: H02M3/156 , H02M3/33507 , H02M2001/0054 , H02M2001/0058 , Y02B70/1491
Abstract: A controller may be configured to generate a control signal to activate and deactivate a switch of a switching power converter in order to control a switching period and a peak current of the switching power converter to maintain a regulated current of the switching power converter at a desired current level such that: if the switching period decreases below a minimum switching period, the controller increases the switching period by a ringing period of a voltage of the switch and increases the peak current to compensate for the increase of the switching period in order to maintain the regulated current, and if the peak current increases above a maximum peak current, the controller decreases the switching period by a ringing period of the voltage of the switch and decreases the peak current to compensate for the decrease of the switching period in order to maintain the regulated current.
Abstract translation: 控制器可以被配置为产生控制信号以激活和停用开关功率转换器的开关，以便控制开关功率转换器的开关周期和峰值电流，以将开关功率转换器的调节电流保持在期望的 电流电平使得：如果开关周期降低到最小开关周期以下，则控制器将开关周期增加开关电压的振铃周期，并增加峰值电流以补偿开关周期的增加以便维持 调节电流，并且如果峰值电流增加到最大峰值电流以上，则控制器将开关周期减小开关的电压的振铃周期，并降低峰值电流以补偿开关周期的减小以便维持 调节电流。
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7.发明申请SYSTEMS AND METHODS FOR DETECTION OF LOAD IMPEDANCE OF A TRANSDUCER DEVICE COUPLED TO AN AUDIO DEVICE 审中-公开用于检测耦合到音频设备的传感器设备的负载阻抗的系统和方法
公开(公告)号：WO2015039002A4
公开(公告)日：2015-08-13
申请号：PCT/US2014055576
申请日：2014-09-15
Applicant: CIRRUS LOGIC INC
Inventor： ILANGO ANAND , ALLEN DANIEL JOHN , JINDAL VIVEK , SATOSKAR ANIRUDDHA , THANDRI BHARATH KUMAR
CPC classification number: H03F1/52 , H03F1/0211 , H03F1/0227 , H03F3/181 , H03F3/183 , H04R5/04 , H04R2420/05
Abstract: In accordance with systems and methods of the present disclosure, an audio device may include an electrical terminal, an audio circuit, and a transducer load detection circuit. The electrical terminal may couple a transducer device to the audio device. The audio circuit may generate an analog audio signal, wherein the analog audio signal is coupled to the electrical terminal. The transducer load detection circuit may detect a load impedance of the transducer device when the transducer device is coupled to the audio device from characteristics measured at the electrical terminal.
Abstract translation: 根据本公开的系统和方法，音频设备可以包括电端子，音频电路和换能器负载检测电路。 电端子可以将换能器装置耦合到音频装置。 音频电路可以生成模拟音频信号，其中模拟音频信号被耦合到电端子。 换能器负载检测电路可以在换能器设备从在电端子处测量的特性耦合到音频设备时检测换能器设备的负载阻抗。
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8.发明申请
公开(公告)号：WO2014164755A3
公开(公告)日：2015-04-02
申请号：PCT/US2014023399
申请日：2014-03-11
Applicant: CIRRUS LOGIC INC
Inventor： MARU SIDDHARTH , HE ZHAOHUI
CPC classification number: H02M3/33507 , H02M1/4258 , H02M3/156 , H05B33/0815 , H05B33/0848 , Y02B20/347 , Y02B70/126
Abstract: An electronic system and method includes a controller to control a switching power converter in at least two different modes of operation, a normal mode and an error reduction mode. The controller controls an amount of charge pushed (i.e. delivered) by the switching power converter to a load to reduce a charge quantization error. The charge quantization error represents an amount of charge pushed to the load beyond a target charge amount. The controller determines an amount of charge to be pushed to the load. Based on the amount of charge to be pushed to the load, the controller generates a current control signal that controls a current control switch in the switching power converter. Determination of the control signal depends on whether the controller is operating in normal mode or error reduction mode. The controller attempts to reduce the charge quantization error to avoid power fluctuations.
Abstract translation: 一种电子系统和方法包括：控制器，其以至少两种不同的操作模式，正常模式和误差降低模式来控制开关功率转换器。 控制器控制由开关功率转换器推送（即传送）到负载的电荷量，以减少电荷量化误差。 电荷量化误差表示被推到负载超过目标电荷量的电荷量。 控制器确定要向负载推送的电量。 基于将被推送到负载的电荷量，控制器产生控制开关电力转换器中的电流控制开关的电流控制信号。 控制信号的确定取决于控制器是在正常模式还是误差降低模式下运行。 控制器尝试降低电荷量化误差以避免功率波动。
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9.发明申请SYSTEMS AND METHODS FOR GENERATING A DIGITAL OUTPUT SIGNAL IN A DIGITAL MICROPHONE SYSTEM 审中-公开在数字麦克风系统中产生数字输出信号的系统和方法
公开(公告)号：WO2014168934A3
公开(公告)日：2014-12-31
申请号：PCT/US2014033302
申请日：2014-04-08
Applicant: CIRRUS LOGIC INC
Inventor： MELANSON JOHN L , TUCKER JOHN C
CPC classification number: H04R3/02 , H03F1/26 , H03F3/16 , H03F2200/372 , H03M3/00 , H03M3/39 , H03M3/424 , H03M3/458 , H03M3/50 , H03M7/3026 , H03M7/3028 , H04R3/00 , H04R3/002 , H04R3/007 , H04R19/04 , H04R29/001
Abstract: In accordance with embodiments of the present disclosure, a digital microphone system may include a microphone transducer and a digital processing system. The microphone transducer may be configured to generate an analog input signal indicative of audio sounds incident upon the microphone transducer. The digital processing system may be configured to convert the analog input signal into a first digital signal having three or more quantization levels, and in the digital domain, process the first digital signal to convert the first digital signal into a second digital signal having two quantization levels.
Abstract translation: 根据本公开的实施例，数字麦克风系统可以包括麦克风换能器和数字处理系统。 麦克风换能器可以被配置为产生指示入射到麦克风换能器上的音频声音的模拟输入信号。 数字处理系统可以被配置为将模拟输入信号转换成具有三个或更多个量化级别的第一数字信号，并且在数字域中处理第一数字信号以将第一数字信号转换成具有两个量化的第二数字信号 水平。
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10.发明申请SYSTEMS AND METHODS FOR USING A SPEAKER AS A MICROPHONE IN A MOBILE DEVICE 审中-公开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：WO2014159574A4
公开(公告)日：2014-12-11
申请号：PCT/US2014024238
申请日：2014-03-12
Applicant: CIRRUS LOGIC INC
Inventor： MELANSON JOHN L , SWANSON ERIC
IPC: H04W52/02
CPC classification number: H04R3/005 , H04R1/04 , H04R1/1041 , H04R3/04 , H04R19/02 , H04R19/04 , H04R2400/01 , H04R2499/11 , H04W52/0251 , H04W52/0254 , Y02B60/50 , 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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