公开(公告)号：WO2016102975A2

公开(公告)日：2016-06-30

申请号：PCT/GB2015/054157

申请日：2015-12-23

Applicant: CAMBRIDGE TOUCH TECHNOLOGIES, LTD

Inventor： NATHAN, Arokia ,  CHA, Suk Bae ,  LAI, Jackson ,  CHURCH, Corbin

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/0414 ,  G06F3/0416 ,  G06F3/044 ,  G06F2203/04103 ,  G06F2203/04105 ,  G06F2203/04106

Abstract: Pressure-sensitive touch panel An apparatus for combined capacitance and pressure sensing is described. The apparatus includes a multiplexer (75) having a plurality of inputs (76) and an output (F), a touch panel (29), and a front end module (3). The touch panel includes a layer structure (5; Fig.15) comprising one or more layers, each extending perpendicularly to a thickness direction, the one or more layers including a layer of piezoelectric material (10; Fig.15), the layer structure having first (6) and second (7; Fig.15) opposite faces, and the layer(s) arranged between the first and second faces such that the thickness direction of each layer is perpendicular to the first and second faces. The touch panel also includes a plurality of first electrodes (8) disposed on the first face, each first electrode connected to a respective input of the multiplexer. The touch panel also includes at least one second electrode (9) disposed on the second face. The front end module is configured to receive an input signal (11) from the multiplexer output. The front end module includes a first stage (12) configured to provide an amplified signal based on the input signal, and a second stage comprising first (13) and second (14) frequency-dependent filters configured to receive the amplified signal and to provide respective first (16) and second (17) filtered signals. The first filtered signal has a first frequency bandwidth, and the second filtered signal has a second frequency bandwidth which has a relatively higher start-frequency than the first frequency bandwidth.

Abstract translation: 压敏触摸面板描述了用于组合电容和压力感测的装置。 该装置包括具有多个输入（76）和输出（F），触摸面板（29）和前端模块（3）的复用器（75）。 触摸面板包括层结构（5;图15），其包括一个或多个层，每个层垂直于厚度方向延伸，所述一个或多个层包括压电材料层（10;图15），所述层结构 具有相对面的第一（6）和第二（7;图15），并且所述层布置在第一和第二表面之间，使得每个层的厚度方向垂直于第一和第二面。 触摸面板还包括设置在第一面上的多个第一电极（8），每个第一电极连接到多路复用器的相应输入端。 触摸面板还包括设置在第二面上的至少一个第二电极（9）。 前端模块被配置为从多路复用器输出接收输入信号（11）。 前端模块包括被配置为基于输入信号提供放大信号的第一级（12），以及包括第一级（13）和第二（14）频率相关滤波器的第二级，其被配置为接收放大的信号并提供 相应的第一（16）和第二（17）滤波信号。 第一滤波信号具有第一频带宽度，第二滤波信号具有与第一频带宽度相对较高的起始频率的第二频带宽度。

公开(公告)号：WO2017134416A2

公开(公告)日：2017-08-10

申请号：PCT/GB2017/050156

申请日：2017-01-23

Applicant: CAMBRIDGE TOUCH TECHNOLOGIES, LTD

Inventor： GAO, Shuo ,  LAI, Jackson ,  NATHAN, Arokia

IPC: G06F3/041

CPC classification number: G06F3/0418 ,  G06F1/3262 ,  G06F3/0416 ,  G06F3/044

Abstract: A method includes obtaining a partial frame by sampling parts of a frame from a touch panel which comprises an array of sensor areas (step S1). The method also includes generating, based on the partial frame, a new frame which comprises estimates of the un-sampled parts (step S2). The method also includes determining whether at least one touch event is present in the new frame (step S3), and upon a positive determination, for each touch event, determining a location of the touch event in the new frame and obtaining a sub-frame by sampling a region of a subsequent frame from the touch panel frame at and around the location (step S4). The method also includes outputting touch information based on one or more sub-frames (step S7).

Abstract translation: 一种方法包括通过对来自包括传感器区域阵列的触摸面板的帧的部分进行采样来获得部分帧（步骤S1）。 该方法还包括基于部分帧生成包括未采样部分的估计的新帧（步骤S2）。 该方法还包括确定在新帧中是否存在至少一个触摸事件（步骤S3），并且在肯定确定时，对于每个触摸事件，确定新帧中的触摸事件的位置并且获得子帧 通过对位于该位置处及其周围的触摸面板框的后续帧的区域进行采样（步骤S4）。 该方法还包括基于一个或多个子帧输出触摸信息（步骤S7）。

公开(公告)号：WO2017134416A3

公开(公告)日：2017-08-10

申请号：PCT/GB2017/050156

申请日：2017-01-23

Applicant: CAMBRIDGE TOUCH TECHNOLOGIES, LTD

Inventor： GAO, Shuo ,  LAI, Jackson ,  NATHAN, Arokia

IPC: G06F3/041

Abstract: A method includes obtaining a partial frame by sampling parts of a frame from a touch panel which comprises an array of sensor areas (step S 1 ). The method also includes generating, based on the partial frame, a new frame which comprises estimates of the un-sampled parts (step S 2 ). The method also includes determining whether at least one touch event is present in the new frame (step S 3 ), and upon a positive determination, for each touch event, determining a location of the touch event in the new frame and obtaining a sub- frame by sampling a region of a subsequent frame from the touch panel frame at and around the location (step S 4 ). The method also includes outputting touch information based on one or more sub- frames (step S 7 ).

公开(公告)号：WO2017081453A1

公开(公告)日：2017-05-18

申请号：PCT/GB2016/053489

申请日：2016-11-08

Applicant: CAMBRIDGE TOUCH TECHNOLOGIES LTD

Inventor： NATHAN, Arokia ,  GAO, Shuo ,  LAI, Jackson

IPC: G06F3/044 ,  G06F3/041 ,  G06K9/40 ,  G06T5/00 ,  H04N5/357 ,  G01D5/24

CPC classification number: G06F3/0416 ,  G06F3/0418 ,  G06F3/044 ,  G06F2203/04104 ,  G06K9/34 ,  G06K9/40 ,  G06T5/002 ,  H04N5/3575

Abstract: A method is described including receiving (S3) a first array of values obtained from measuring an array of touch panel sensor areas (Fig.4; In,m ). The method also includes generating (S4) a second array of values based on subtracting a reference array of values from the first array of values. The method also includes determining (S5) presence of at least one touch event in dependence upon the second array of value and, upon a negative determination (S8) generating a new reference array based on exponential smoothing of the reference array and the first array using a weighting factor, wherein the weighting factor is zero, and storing the new reference matrix and, upon a positive determination (S6) outputting the second array.

Abstract translation: 描述了一种方法，包括接收（S3）通过测量触摸面板传感器区域阵列（图4; In，m）获得的第一数值阵列。 该方法还包括基于从第一数组值中减去参考数组而产生（S4）第二数组值。 该方法还包括根据第二数值阵列来确定（S5）至少一个触摸事件的存在，并且在否定的确定（S8）时基于使用参考阵列和第一阵列的指数平滑生成新的参考阵列，使用 加权因子，其中加权因子为零，并且存储新的参考矩阵，并且在肯定确定时（S6）输出第二阵列。