公开(公告)号：US10224952B2

公开(公告)日：2019-03-05

申请号：US15490759

申请日：2017-04-18

Applicant: Avnera Corporation

Inventor： Jianping Wen ,  Ali Hadiashar ,  Eric King ,  David Entrikin ,  Wai Lang Lee

IPC: H03M3/00

Abstract: Embodiments of the invention include an oversampling Analog to Digital Converter that uses uneven non-overlapping clock phases to reduce switched capacitor circuit power consumption. A return-to-zero sub phase of one of the clock phases may also be used for feedback reference capacitors. A delay lock loop may be combined with the non-overlapping clock phase generator to control accurate timing.

公开(公告)号：US09525388B1

公开(公告)日：2016-12-20

申请号：US14323657

申请日：2014-07-03

Applicant: Avnera Corporation

Inventor： Ali Hadiashar ,  Wai Lang Lee

IPC: H03G3/20 ,  H03F3/183 ,  H03F3/45

CPC classification number: H03F3/183 ,  H03F1/26 ,  H03F3/187 ,  H03F3/45475 ,  H03F3/45941 ,  H03F3/45968 ,  H03F3/68 ,  H03F2200/03 ,  H03F2200/372 ,  H03F2203/45418 ,  H03F2203/45522 ,  H03F2203/45531

Abstract: A new compensation system for an audio input reduces noise by matching feedback ratios in the positive and negative paths. A variable resistance network allows for fine control of resistance trimming in one of the signal paths, which allows for compensation between tolerance of resistors that are external to an integrated circuit and those that are internal to the integrated circuit.

Abstract translation: 用于音频输入的新补偿系统通过匹配正和负路径中的反馈比来降低噪声。 可变电阻网络允许精细控制信号路径之一的电阻微调，这允许在集成电路外部的电阻器的容差与集成电路内部的电阻器之间进行补偿。

公开(公告)号：US10560114B2

公开(公告)日：2020-02-11

申请号：US16174088

申请日：2018-10-29

Applicant: Avnera Corporation

Inventor： Jianping Wen ,  Ali Hadiashar ,  Eric King ,  David Entrikin ,  Wai Lang Lee

IPC: H03M3/00

Abstract: Embodiments of the invention include an oversampling Analog to Digital Converter that uses uneven non-overlapping clock phases to reduce switched capacitor circuit power consumption. A return-to-zero sub phase of one of the clock phases may also be used for feedback reference capacitors. A delay lock loop may be combined with the non-overlapping clock phase generator to control accurate timing.

公开(公告)号：US20190043469A1

公开(公告)日：2019-02-07

申请号：US16154526

申请日：2018-10-08

Applicant: Avnera Corporation

Inventor： Amit Kumar ,  Wai Lang Lee ,  Jianping Wen

IPC: G10K11/178

Abstract: A method of adaptive noise cancellation can include receiving an audio input signal, receiving an ambient signal through a microphone, modifying filter parameters of a noise filter based on the ambient signal, and filtering the audio input signal based on the modified filter parameters.

公开(公告)号：US20190173486A1

公开(公告)日：2019-06-06

申请号：US16174088

申请日：2018-10-29

Applicant: Avnera Corporation

Inventor： Jianping Wen ,  Ali Hadiashar ,  Eric King ,  David Entrikin ,  Wai Lang Lee

IPC: H03M3/00

CPC classification number: H03M3/496 ,  H03M3/376 ,  H03M3/438

Abstract: Embodiments of the invention include an oversampling Analog to Digital Converter that uses uneven non-overlapping clock phases to reduce switched capacitor circuit power consumption. A return-to-zero sub phase of one of the clock phases may also be used for feedback reference capacitors. A delay lock loop may be combined with the non-overlapping clock phase generator to control accurate timing.

公开(公告)号：US20170250703A1

公开(公告)日：2017-08-31

申请号：US15490759

申请日：2017-04-18

Applicant: Avnera Corporation

Inventor： Jianping Wen ,  Ali Hadiashar ,  Eric King ,  David Entrikin ,  Wai Lang Lee

IPC: H03M3/00

CPC classification number: H03M3/496 ,  H03M3/376 ,  H03M3/438

Abstract: Embodiments of the invention include an oversampling Analog to Digital Converter that uses uneven non-overlapping clock phases to reduce switched capacitor circuit power consumption. A return-to-zero sub phase of one of the clock phases may also be used for feedback reference capacitors. A delay lock loop may be combined with the non-overlapping clock phase generator to control accurate timing.

公开(公告)号：US09741333B2

公开(公告)日：2017-08-22

申请号：US14148533

申请日：2014-01-06

Applicant: Avnera Corporation

Inventor： Amit Kumar ,  Wai Lang Lee ,  Jianping Wen

IPC: G10K11/16 ,  G10K11/178

CPC classification number: G10K11/178 ,  G10K11/17853 ,  G10K11/17873 ,  G10K11/17875 ,  G10K11/17879 ,  G10K2210/3016 ,  G10K2210/3026 ,  G10K2210/3027 ,  G10K2210/3028 ,  H04R2460/01

Abstract: A programmable Active Noise Compensation (ANC) system for an audio input includes a parameter store structured to store a number of various filter parameters. A mode of operation is selected that represents the type of environment the ANC system is operating in—feed-forward, feed-back, or combined feed-forward and feedback. Different filter parameters are retrieved from the parameter store based on the selected mode and desired operation. Audio inputs are sampled at a relatively high sample rate that matches inputs from a feed-forward and feedback microphone that may be present in the system. Parameters and instructions may be changed in the system responsive to changing conditions of the compensation system.

公开(公告)号：US09628106B1

公开(公告)日：2017-04-18

申请号：US15007054

申请日：2016-01-26

Applicant: Avnera Corporation

Inventor： Jianping Wen ,  Ali Hadiashar ,  Eric King ,  David Entrikin ,  Wai Lang Lee

IPC: H03M3/00

CPC classification number: H03M3/496 ,  H03M3/376 ,  H03M3/438

Abstract: Embodiments of the invention include an oversampling Analog to Digital Converter that uses uneven non-overlapping clock phases to reduce switched capacitor circuit power consumption. A return-to-zero sub phase of one of the clock phases may also be used for feedback reference capacitors. A delay lock loop may be combined with the non-overlapping clock phase generator to control accurate timing.

公开(公告)号：US20150195646A1

公开(公告)日：2015-07-09

申请号：US14148533

申请日：2014-01-06

Applicant: Avnera Corporation

Inventor： Amit Kumar ,  Wai Lang Lee ,  Jianping Wen

IPC: H04R3/00

CPC classification number: G10K11/178 ,  G10K11/17853 ,  G10K11/17873 ,  G10K11/17875 ,  G10K11/17879 ,  G10K2210/3016 ,  G10K2210/3026 ,  G10K2210/3027 ,  G10K2210/3028 ,  H04R2460/01

Abstract: A programmable Active Noise Compensation (ANC) system for an audio input includes a parameter store structured to store a number of various filter parameters. A mode of operation is selected that represents the type of environment the ANC system is operating in—feed-forward, feed-back, or combined feed-forward and feedback. Different filter parameters are retrieved from the parameter store based on the selected mode and desired operation. Audio inputs are sampled at a relatively high sample rate that matches inputs from a feed-forward and feedback microphone that may be present in the system. Parameters and instructions may be changed in the system responsive to changing conditions of the compensation system.

Abstract translation: 用于音频输入的可编程有源噪声补偿（ANC）系统包括结构化以存储多个滤波器参数的参数存储器。 选择一种操作模式，其表示ANC系统正在进行前馈，反馈或组合的前馈和反馈的环境类型。 基于所选择的模式和期望的操作，从参数存储器检索不同的滤波器参数。 音频输入以相对高的采样率进行采样，该采样率与可能存在于系统中的前馈和反馈麦克风的输入相匹配。 响应于补偿系统的变化条件，可以在系统中改变参数和指令。