公开(公告)号：US10412479B2

公开(公告)日：2019-09-10

申请号：US15154350

申请日：2016-05-13

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Xin Zhao ,  Bradley A. Lambert ,  Xiaofan Fei ,  Eric J. Swanson

IPC: H04R1/10 ,  H04R5/04 ,  H04M1/60 ,  H03M1/66 ,  H03M1/12 ,  G06F1/3287 ,  G06F3/16 ,  G06F1/3215

Abstract: A headset power management system provides robust and low-power operation by detecting various connection conditions by measuring a voltage at the microphone terminal with and without injection of current from the headset. A power management circuit controls an operating state of the headset using a microphone terminal voltage detector and can determine whether a short circuit is present indicating a connection to a device that does not have a microphone input, a negative polarity voltage is present indicating that the device may be determining a connection and type of the headset using the microphone terminal, a normal connection, or whether the headset is not connected to a device at all. Depending on the connection state, some or all of the headset electronics may be disabled until a normal connection is detected. For example the microphone processing circuits may be disabled if the connection does not support a microphone input.

公开(公告)号：US20170019725A1

公开(公告)日：2017-01-19

申请号：US15154350

申请日：2016-05-13

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Xin Zhao ,  Brad Lambert ,  Xiaofan Fei ,  Eric J. Swanson

IPC: H04R1/10 ,  H03M1/66 ,  H03M1/12 ,  H04R1/08 ,  H04R29/00

CPC classification number: H04R1/1041 ,  G06F1/3215 ,  G06F1/3287 ,  G06F3/165 ,  H03M1/12 ,  H03M1/66 ,  H04M1/6058 ,  H04R5/04 ,  H04R2201/107 ,  H04R2420/05 ,  H04R2460/03 ,  Y02D10/171

Abstract: A headset power management system provides robust and low-power operation by detecting various connection conditions by measuring a voltage at the microphone terminal with and without injection of current from the headset. A power management circuit controls an operating state of the headset using a microphone terminal voltage detector and can determine whether a short circuit is present indicating a connection to a device that does not have a microphone input, a negative polarity voltage is present indicating that the device may be determining a connection and type of the headset using the microphone terminal, a normal connection, or whether the headset is not connected to a device at all. Depending on the connection state, some or all of the headset electronics may be disabled until a normal connection is detected. For example the microphone processing circuits may be disabled if the connection does not support a microphone input.

Abstract translation: 头戴式耳机电源管理系统通过检测各种连接条件来提供鲁棒和低功耗的操作，通过测量麦克风端口上的电压，并且不注射来自耳机的电流。 电源管理电路使用麦克风端子电压检测器控制耳机的操作状态，并且可以确定是否存在指示与不具有麦克风输入的设备的连接的短路，存在负极性电压，指示该设备 可以使用麦克风终端，正常连接或耳机是否没有连接到设备来确定耳机的连接和类型。 取决于连接状态，可以禁用部分或全部耳机电子设备，直到检测到正常连接。 例如，麦克风处理电路可能会被禁用，如果连接不支持麦克风输入。