公开(公告)号：US20150370364A1

公开(公告)日：2015-12-24

申请号：US14313711

申请日：2014-06-24

Applicant: Synaptics Incorporated

Inventor： Joel C. JORDAN ,  Adam SCHWARTZ

IPC: G06F3/044 ,  G01B7/00

CPC classification number: G06F3/044 ,  G01B7/003 ,  G01B2210/58 ,  G06F3/0412 ,  G06F3/0416 ,  G06F2203/04101 ,  G06F2203/04106 ,  G06F2203/04111

Abstract: Embodiments of the invention generally provide an input device that includes a zero-dimensional button that detects whether an input object is proximate to a sensing region. However, different input objects may provide similar responses which may prevent the input device from accurately determining whether the user actually intended to activate the button. In one embodiment, the input device drives a capacitive sensing signal onto a sensor electrode in the capacitive button and measures at least two resulting signals. The input device then derives capacitance values based on the two resulting signals and uses a ratio between the capacitance values to classifying the interaction with the input object. This ratio enables the input device to distinguish between events that have similar capacitive responses and would otherwise be indistinguishable if only one resulting signal were measured.

Abstract translation: 本发明的实施例通常提供一种输入装置，其包括检测输入对象是否靠近感测区域的零维度按钮。 然而，不同的输入对象可以提供类似的响应，这可以防止输入设备准确地确定用户实际上是否想要激活按钮。 在一个实施例中，输入设备将电容感测信号驱动到电容按钮中的传感器电极上，并测量至少两个结果信号。 然后，输入设备基于两个所得到的信号导出电容值，并使用电容值之间的比率来分类与输入对象的交互。 该比率使得输入设备能够区分具有类似电容响应的事件，并且如果仅测量一个所得到的信号否则将是不可区分的。

公开(公告)号：US20150346862A1

公开(公告)日：2015-12-03

申请号：US14502870

申请日：2014-09-30

Applicant: Synaptics Incorporated

Inventor： Adam SCHWARTZ

IPC: G06F3/044

CPC classification number: G06F3/0418

Abstract: Disclosed herein are techniques for reducing certain types of noise in capacitive sensing devices. The techniques generally comprise utilizing a low-pass filter in conjunction with a comb filter to “zero out” frequency components associated with certain types of noise. More specifically, the comb filter is configured to zero out noise associated with the fundamental frequency and harmonics of noise that approximates a square wave or an impulse train. The frequency of the sensing signal for capacitive sensing is chosen such that the comb filter does not zero out such frequency.

Abstract translation: 这里公开了用于减小电容式感测装置中的某些类型的噪声的技术。 这些技术通常包括利用低通滤波器与梳状滤波器相结合来“消除”与某些类型的噪声相关联的频率分量。 更具体地，梳状滤波器被配置为对与近似于方波或脉冲串的基本频率和噪声的谐波相关联的噪声进行归零。 选择用于电容感测的感测信号的频率，使得梳状滤波器不将该频率清零。

公开(公告)号：US20150261341A1

公开(公告)日：2015-09-17

申请号：US14205132

申请日：2014-03-11

Applicant: Synaptics Incorporated

Inventor： John WEINERTH ,  Adam SCHWARTZ

IPC: G06F3/044 ,  G06F3/041

CPC classification number: G06F3/044 ,  G06F3/0416

Abstract: A processing system comprises a sensor module and a determination module. The sensor module is configured to drive a modulated signal on to a sensor electrode to achieve a target voltage on the sensor electrode during a first portion of a sensing cycle, wherein the modulated signal comprises a first voltage that is beyond a level of the target voltage and which is driven for a first period of time and a second voltage that is at the target voltage and which is driven for a second period of time that follows the first period of time. The determination module is configured to determine an absolute capacitance of the sensor electrode during the first portion of the sensing cycle after driving the second voltage.

Abstract translation: 处理系统包括传感器模块和确定模块。 传感器模块被配置为在感测周期的第一部分期间将调制信号驱动到传感器电极以实现传感器电极上的目标电压，其中调制信号包括超出目标电压水平的第一电压 并且其被驱动第一时间段和第二电压，其处于目标电压并且被驱动在第一时间段之后的第二时间段。 确定模块被配置为在驱动第二电压之后确定感测周期的第一部分期间传感器电极的绝对电容。

公开(公告)号：US20150091840A1

公开(公告)日：2015-04-02

申请号：US14040589

申请日：2013-09-27

Applicant: Synaptics Incorporated

Inventor： Petr SHEPELEV ,  Adam SCHWARTZ

IPC: G06F3/044 ,  G06F3/041

CPC classification number: G06F3/044 ,  G06F3/0412 ,  G06F3/0416

Abstract: Embodiments of the present invention generally provide an input device comprising a display device integrated with a capacitive sensing device. The input device includes a plurality of transmitter electrodes, each transmitter electrode comprising one or more common electrodes configured to be driven for display updating and capacitive sensing, a plurality of near-field receiver electrodes configured to perform capacitive sensing in a near-field sensing region, and a plurality of far-field receiver electrodes configured to perform capacitive sensing in a far-field sensing region. The input device further includes a processing system coupled to the plurality of transmitter electrodes, the plurality of near-field receiver electrodes, and the plurality of far-field receiver electrodes. The processing system is configured to determine a near-field capacitive image based on the first resulting signals received from the near-field receiver electrodes and determine a far-field capacitive image based on the second resulting signals received from the far-field receiver electrodes.

Abstract translation: 本发明的实施例通常提供一种包括与电容感测装置集成的显示装置的输入装置。 所述输入装置包括多个发射器电极，每个发射器电极包括一个或多个公共电极，所述公共电极被配置为被驱动以用于显示更新和电容感测;多个近场接收器电极，被配置为在近场感测区域中执行电容感测 以及被配置为在远场感测区域中执行电容感测的多个远场接收器电极。 输入装置还包括耦合到多个发射器电极，多个近场接收器电极和多个远场接收器电极的处理系统。 处理系统被配置为基于从近场接收器电极接收的第一结果信号来确定近场电容性图像，并且基于从远场接收器电极接收的第二结果信号确定远场电容图像。