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公开(公告)号：US09532125B2
公开(公告)日：2016-12-27
申请号：US14298379
申请日：2014-06-06
Applicant: Cirrus Logic, Inc.
Inventor： Jens-Peter B. Axelsson , John L. Melanson
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: An audio device, in at least one embodiment, includes a device package and a plurality of microphones. The device package defines a component cavity and a plurality of vias including a first via and a second via. The vias comprise openings in the device package extending between the component cavity and an exterior. The microphones are located within the component cavity. The microphones are configured to generate electrical signals in accordance with acoustic pressure in the respective vias. A disclosed audio apparatus includes an apparatus housing and a speaker and one or more noise cancellation microphones within the frame. The speaker includes a speaker diaphragm configured to vibrate in accordance with an audio signal. The apparatus housing may define a speaker cavity configured to mechanically support the speaker diaphragm. In at least one embodiment, the audio apparatus includes a multi-microphone device including a first transducer corresponding to a first via and a second transducer corresponding to a second via. A first acoustical conduit may extend from a first end in proximity to the first via to a first exterior location and a second acoustical conduit may extend from a second end in proximity to the second via to a second exterior location.
Abstract translation: 在至少一个实施例中，音频设备包括设备包和多个麦克风。 器件封装限定了一个元件腔和多个通孔，其中包括第一通孔和第二通孔。 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。 麦克风位于组件腔内。 麦克风被配置为根据相应通孔中的声压产生电信号。 所公开的音频设备包括设备外壳和扬声器以及框架内的一个或多个噪声消除麦克风。 扬声器包括配置为根据音频信号振动的扬声器振动膜。 设备壳体可以限定被配置为机械地支撑扬声器振膜的扬声器腔。 在至少一个实施例中，音频设备包括多麦克风设备，其包括对应于第一通孔的第一换能器和对应于第二通孔的第二换能器。 第一声导管可以从靠近第一通道的第一端延伸到第一外部位置，并且第二声导管可以从靠近第二通道的第二端延伸到第二外部位置。
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公开(公告)号：US09407991B2
公开(公告)日：2016-08-02
申请号：US14673387
申请日：2015-03-30
Applicant: Cirrus Logic, Inc.
Inventor： John L. Melanson , Eric Swanson
IPC: H04R9/08 , H04R3/00 , H04R1/04 , H04W52/02 , H04R1/10 , H04R3/04 , H04R19/02 , H04R19/04 , H04R1/02 , H04M1/00
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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公开(公告)号：US20160173112A1
公开(公告)日：2016-06-16
申请号：US15050857
申请日：2016-02-23
Applicant: Cirrus Logic, Inc.
Inventor： Tejasvi Das , John L. Melanson
CPC classification number: H03M1/002 , H03M1/0845 , H03M1/66 , H03M1/662 , H03M1/68 , H03M1/70 , H03M1/785 , H03M3/32 , H03M3/392 , H03M3/414 , H03M3/416 , H03M3/50
Abstract: In accordance with embodiments of the present disclosure, a processing system may include a plurality of processing paths including a first processing path and a second processing path, a digital-to-analog stage output, and a controller. The first processing path may include a first digital-to-analog converter for converting the digital input signal into a first intermediate analog signal, the first digital-to-analog converter configured to operate in a high-power state and a low-power state. The second processing path may include a second digital-to-analog converter for converting a digital input signal into a second intermediate analog signal. The digital-to-analog stage output may be configured to generate an analog signal comprising a sum of the first intermediate analog signal and the second intermediate analog signal. The controller may be configured to operate the first digital-to-analog converter in the lower-power state when a magnitude of the digital input signal is below a threshold magnitude.
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公开(公告)号：US09337795B2
公开(公告)日：2016-05-10
申请号：US14481201
申请日：2014-09-09
Applicant: Cirrus Logic, Inc.
Inventor： Tejasvi Das , Xin Zhao , Ted Burk , Ku He , John L. Melanson , Xiaofan Fei
CPC classification number: H03G3/20 , H03G3/001 , H03G3/002 , H03G3/3005 , H03G3/3089
Abstract: A signal path may operate in one of a plurality of gain modes such that for each gain mode, the product of a digital gain and an analog signal gain of the signal path associated with the particular gain mode are approximately equal to a fixed path gain. During each of one or more calibration phases, a calibration system may measure analog signals at a plurality of nodes of the first path portion, calculate an actual analog gain associated with the gain mode based on the analog signals measured at the plurality of nodes, calculate an error between the fixed path gain and a mathematical product of the actual analog gain associated with the gain mode and the digital gain associated with the gain mode, and modify at least one of the digital gain and the analog gain associated with the gain mode in conformity with the error.
Abstract translation: 信号路径可以以多种增益模式之一操作，使得对于每个增益模式，与特定增益模式相关联的信号路径的数字增益和模拟信号增益的乘积近似等于固定路径增益。 在一个或多个校准阶段的每一个期间，校准系统可以测量第一路径部分的多个节点处的模拟信号，基于在多个节点处测量的模拟信号来计算与增益模式相关联的实际模拟增益，计算 固定路径增益与与增益模式相关联的实际模拟增益与与增益模式相关联的数字增益的数学乘积之间的误差，并且修改与增益模式相关联的数字增益和模拟增益中的至少一个 符合错误。
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公开(公告)号：US20160072521A1
公开(公告)日：2016-03-10
申请号：US14845899
申请日：2015-09-04
Applicant: Cirrus Logic, Inc.
Inventor： John L. Melanson , Stephen T. Hodapp
IPC: H03M3/00
Abstract: Requirements placed on the first integrator of a filter in a continuous-time delta-feedback modulator may be reduced by using circuitry to reduce the speed of a signal provided to the first integrator of the modulator. The reduction in speed applied to the signal received at the first integrator may then be compensated with circuitry elsewhere in the modulator, such that the net effect of the slow down and speed up of signals does not affect the output of the modulator. The sigma-delta modulator may be implemented in converters, such as an analog-to-digital converter (ADC).
Abstract translation: 通过使用电路来降低提供给调制器的第一积分器的信号的速度，可以减少在连续时间增量反馈调制器中对滤波器的第一积分器的要求。 然后可以利用在调制器其他地方的电路补偿施加到在第一积分器处接收的信号的速度的降低，使得信号的减速和加速的净效应不影响调制器的输出。 Σ-Δ调制器可以在诸如模数转换器（ADC）的转换器中实现。
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Patent Agency Ranking
公开(公告)号：US20160057532A1
公开(公告)日：2016-02-25
申请号：US14932803
申请日：2015-11-04
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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77.发明申请公开(公告)号：US20160006448A1
公开(公告)日：2016-01-07
申请号：US14617376
申请日：2015-02-09
Applicant: Cirrus Logic, Inc.
Inventor： John L. Melanson , Jaimin Mehta , Stephen T. Hodapp
CPC classification number: H03M1/1038 , H03M1/06 , H03M1/0665 , H03M1/0863 , H03M1/10 , H03M1/1009 , H03M1/66 , H03M3/458
Abstract: An apparatus may include a scrambler element configured to receive an input signal and generate a scrambled thermometer code-like signal having a plurality of bits based on the input signal and having a plurality of possible quantization values. The scrambler element may generate at least one equivalent code of the scrambled thermometer code-like signal for each possible quantization value. For each of one or more of the possible quantization values, the scrambler element may be configured to generate a plurality of possible equivalent codes of the scrambled thermometer code-like signal. Responsive to the input signal indicating a change in quantization value of the scrambled thermometer code-like signal, the scrambler element may change the scrambled thermometer code-like signal by transitioning the smallest possible number of the plurality of bits of the scrambled thermometer code-like signal to change quantization value of the scrambled thermometer code-like signal in accordance with the input signal.
Abstract translation: 装置可以包括扰频器元件，其被配置为接收输入信号并且基于输入信号生成具有多个比特的加扰温度计类似码字的信号，并且具有多个可能的量化值。 加扰器元件可以为每个可能的量化值生成加扰的温度计代码样信号的至少一个等效代码。 对于一个或多个可能的量化值中的每个，加扰器元件可以被配置为生成加扰的温度计代码样信号的多个可能的等效代码。 响应于指示加扰的温度计编码类信号的量化值的改变的输入信号，加扰器元件可以通过转换加扰的温度计代码样信号的多个比特的最小可能数来改变加扰的温度计代码样信号 信号以根据输入信号改变加扰的温度计代码样信号的量化值。
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78.发明授权Energy-efficient personal audio device output stage with signal polarity-dependent power supply update rate 有权具有信号极性相关电源更新速率的节能个人音响设备输出级公开(公告)号：US09209757B1
公开(公告)日：2015-12-08
申请号：US14067485
申请日：2013-10-30
Applicant: Cirrus Logic, Inc.
Inventor： Bharath Kumar Thandri , John L. Melanson
CPC classification number: H03F3/183 , H02M3/07 , H02M2003/071 , H02M2003/072 , H03F1/0211 , H03F1/0227 , H03F3/185 , H03F3/217 , H03F2200/03 , H03F2200/102
Abstract: A charge pump power supply may comprise a plurality of capacitors and a switching circuit for switching the capacitors to provide a first voltage or a second voltage in accordance with the select input. The charge pump power supply may have a signal polarity input for indicating a polarity of an output audio signal. Switches for switching one or more capacitors providing a first polarity voltage in a then-current operating mode may be configured to switch at a greater frequency than switches for switching one or more capacitors providing a second polarity voltage responsive to the signal polarity input indicating a positive polarity of the output audio signal. Switches for switching one or more capacitors providing the first polarity voltage in a then-current operating mode are configured to switch at a lesser frequency than switches for switching one or more capacitors providing the second polarity voltage responsive to the signal polarity input indicating a negative polarity of the output audio signal.
Abstract translation: 电荷泵电源可以包括多个电容器和用于切换电容器以根据选择输入提供第一电压或第二电压的开关电路。 电荷泵电源可以具有用于指示输出音频信号的极性的信号极性输入。 用于切换在当前操作模式中提供第一极性电压的一个或多个电容器的开关可以被配置为以比用于切换提供第二极性电压的一个或多个电容器的开关更大的频率切换，所述电容器响应于指示正的 输出音频信号的极性。 用于切换在当前操作模式中提供第一极性电压的一个或多个电容器的开关被配置为响应于指示负极性的信号极性输入而以比用于切换提供第二极性电压的一个或多个电容器的开关更小的频率 的输出音频信号。
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公开(公告)号：US09207265B1
公开(公告)日：2015-12-08
申请号：US13942466
申请日：2013-07-15
Applicant: Cirrus Logic, Inc.
Inventor： Robert T. Grisamore , Firas S. Azrai , Mohit Sood , John L. Melanson , Eric J. King , Jean-Charles Pina
CPC classification number: H05B33/0815 , G01R19/0046 , H05B33/0848 , H05B37/0218 , H05B37/0263 , Y02B20/346
Abstract: In at least one embodiment, a lighting system receives an input signal, such as a supply voltage, that can be affected by a dimmer. The supply voltage can be affected by a dimmer when, for example, a dimmer phase cut (i.e. chopped) the supply voltage. A dimmer detection system of the lighting system determines if a dimmer is affecting the supply voltage. In at least one embodiment, the dimmer detection system also determines a type of the dimmer, such as detecting if the dimmer is a leading edge or trailing edge dimmer. In at least one embodiment, the dimmer detection system provides dimmer type data to one or more other circuits such as a switching power converter controller. The one or more other circuits utilize the dimmer type data to affect their operation.
Abstract translation: 在至少一个实施例中，照明系统接收可以受到调光器影响的诸如电源电压的输入信号。 当例如电源电压的调光相切（即切断）时，电源电压可能受到调光器的影响。 照明系统的调光器检测系统确定调光器是否影响电源电压。 在至少一个实施例中，调光器检测系统还确定调光器的类型，例如检测调光器是前缘还是后缘调光器。 在至少一个实施例中，调光器检测系统向诸如开关功率转换器控制器的一个或多个其它电路提供调光器类型的数据。 一个或多个其他电路利用调光器类型的数据来影响其操作。
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80.发明申请公开(公告)号：US20150331656A1
公开(公告)日：2015-11-19
申请号：US14276237
申请日：2014-05-13
Applicant: Cirrus Logic, Inc.
Inventor： John L. Melanson , John C. Tucker
CPC classification number: H04B15/04 , G05B15/02 , G05F1/14 , G06F1/08 , G06F3/165 , H04B2215/067 , H04B2215/068
Abstract: A mobile device may include a digital data driver and digital data receiver for communication of digital signals within the mobile device at a selected clock rate. The mobile device may also have a device external for the digital data driver and digital data receiver for communication of external signals, such as radio-frequency signals, to and from the mobile device. To avoid interference of frequency harmonics of a digital signal with such external signals, the digital data driver may be configured to control the digital signal based on the frequency of the external signals, such that interference of the external signal by spectral content of the digital signal is minimized, while maintaining the selected clock rate.
Abstract translation: 移动设备可以包括数字数据驱动器和数字数据接收器，用于以选定的时钟速率在移动设备内通信数字信号。 移动设备还可以具有用于数字数据驱动器的外部设备和数字数据接收器，用于将外部信号（例如射频信号）传送到移动设备和从移动设备通信。 为了避免数字信号与这种外部信号的频率谐波的干扰，数字数据驱动器可以被配置为基于外部信号的频率来控制数字信号，使得通过数字信号的频谱内容对外部信号的干扰 同时保持选定的时钟频率。
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