公开(公告)号：US20170003816A1

公开(公告)日：2017-01-05

申请号：US15268418

申请日：2016-09-16

Applicant: Apple Inc.

Inventor： Jeffrey Traer BERNSTEIN ,  David T. AMM ,  Omar S. LEUNG ,  Christopher Tenzin MULLENS ,  Brian Michael KING ,  Brian Richards LAND ,  Reese T. CUTLER

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/0416 ,  G06F3/044 ,  G06F3/04817 ,  G06F3/04845 ,  G06F3/0486 ,  G06F2203/04101

Abstract: A capacitive sensing apparatus is disclosed. In some examples, the capacitive sensing apparatus includes a sensor control system configured to: during a first scan of the sensor array: transmit a first alternating current (AC) signal concurrently with a second alternating current (AC) signal to the sensor array, transmit the first AC signal to the first electrode of the sensor array, measure a self capacitance at the first input location, and transmit the second AC signal to the second electrode of the sensor array without measuring a self capacitance at the second input location, and during a second scan of the sensor array: transmit the first AC signal concurrently with the second AC signal to the sensor array, transmit the first AC signal to the first electrode of the sensor array without measuring the self capacitance at the first input location, and measure the self capacitance at the second input location.

Abstract translation: 公开了一种电容式感测装置。 在一些示例中，电容感测装置包括传感器控制系统，其被配置为：在传感器阵列的第一次扫描期间：将第一交流电（AC）信号与第二交流（AC）信号同时传送到传感器阵列，传输 到传感器阵列的第一电极的第一AC信号测量第一输入位置处的自电容，并且将第二AC信号传输到传感器阵列的第二电极，而不测量第二输入位置处的自电容，并且在 传感器阵列的第二扫描：将第一AC信号与第二AC信号同时传送到传感器阵列，将第一AC信号传输到传感器阵列的第一电极，而不测量第一输入位置处的自电容，并测量 在第二输入位置的自电容。

公开(公告)号：US20170068356A1

公开(公告)日：2017-03-09

申请号：US15356215

申请日：2016-11-18

Applicant: Apple Inc.

Inventor： Aleksandar PANCE ,  Omar S. LEUNG ,  David T. AMM

IPC: G06F3/044 ,  G06F1/16 ,  H03K17/96 ,  G06F3/041

Abstract: The present disclosure addresses methods and apparatus facilitating capacitive sensing using a conductive surface, and facilitating the sensing of proximity to the conductive surface. The sensed proximity will often be that of a user, but can be another source of a reference voltage potential. In some examples, the described systems are capable of sensing capacitance (including parasitic capacitance) in a circuit that includes the outer conductive surface, and where that outer conductive surface is at a floating electrical potential. In some systems, the systems can be switched between two operating modes, a first mode in which the system will sense proximity to the conductive surface, and a second mode in which the system will use a capacitance measurement to sense contact with the conductive surface.

Abstract translation: 本公开涉及使用导电表面促进电容感测的方法和装置，并且有助于感测靠近导电表面。 感测到的接近度通常是用户的接近度，但是可以是参考电压电位的另一个来源。 在一些示例中，所描述的系统能够感测包括外部导电表面的电路中的电容（包括寄生电容），并且其中外部导电表面处于浮置电位。 在一些系统中，系统可以在两种操作模式之间切换，其中系统将感测到与导电表面接近的第一模式，以及其中系统将使用电容测量来感测与导电表面的接触的第二模式。