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：US20160209982A1

公开(公告)日：2016-07-21

申请号：US15083102

申请日：2016-03-28

Applicant: Apple Inc.

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

IPC: G06F3/041 ,  G06F3/0486 ,  G06F3/044

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

Abstract: Improved capacitive touch and hover sensing with a sensor array is provided. An AC ground shield positioned behind the sensor array and stimulated with signals of the same waveform as the signals driving the sensor array may concentrate the electric field extending from the sensor array and enhance hover sensing capability. The hover position and/or height of an object that is nearby, but not directly above, a touch surface of the sensor array, e.g., in the border area at the end of a touch screen, may be determined using capacitive measurements of sensors near the end of the sensor array by fitting the measurements to a model. Other improvements relate to the joint operation of touch and hover sensing, such as determining when and how to perform touch sensing, hover sensing, both touch and hover sensing, or neither.

Abstract translation: 提供了改进的电容式触摸和悬停感测与传感器阵列。 定位在传感器阵列后面并用与驱动传感器阵列的信号相同波形的信号刺激的AC接地屏蔽可以集中从传感器阵列延伸的电场并增强悬停感测能力。 传感器阵列的触摸表面（例如在触摸屏末端的边界区域）附近但不是直接在上方的物体的悬停位置和/或高度可以使用接近的传感器的电容测量来确定 传感器阵列的末端通过将测量值拟合到模型中。 其他改进涉及触摸和悬停感测的联合操作，例如确定何时以及如何执行触摸感测，悬停感测，触摸和悬停检测，或两者皆不一致。