公开(公告)号：US20160357344A1

公开(公告)日：2016-12-08

申请号：US15144706

申请日：2016-05-02

Applicant: Apple Inc.

Inventor： Ari Y. BENBASAT ,  William Matthew VIETA ,  Wayne Carl WESTERMAN ,  Steven P. HOTELLING

IPC: G06F3/041

CPC classification number: G06F3/0418

Abstract: Reconstruction of an original touch image from a differential touch image is disclosed. Reconstruction can include aligning columns of the differential touch image relative to each other and aligning the image to a baseline DC value. The column and baseline alignment can be based on the differential image data indicative of no touch or hover, because such data can more clearly show the amount of alignment needed to reconstruct the original image. The reconstruction can be performed using the differential image data alone. The reconstruction can also be performed using the differential image data and common mode data indicative of the missing image column average.

公开(公告)号：US20140035854A1

公开(公告)日：2014-02-06

申请号：US14048859

申请日：2013-10-08

Applicant: Apple Inc.

Inventor： William Matthew VIETA

IPC: G06F3/041

CPC classification number: G06F3/0418 ,  G06F3/0412 ,  G06F3/044 ,  G06F2203/04104

Abstract: Negative pixel compensation in a touch sensor panel is disclosed. A method can compensate for a negative pixel effect in touch signal outputs due to poor grounding of an object touching the panel. To do so, the method can include determining at least one bound for a negative pixel compensation factor based on touch signal values, estimating the compensation factor within the determined bound based on the touch signal values that are negative, where the negative values indicate the presence of the negative pixel effect, and applying the estimated compensation factor to the touch signal outputs to compensate the touch signal values for the negative pixel effect.

Abstract translation: 公开了触摸传感器面板中的负像素补偿。 由于接触面板的物体接地不良，一种方法可以补偿触摸信号输出中的负像素效应。 为了这样做，该方法可以包括基于触摸信号值来确定负像素补偿因子的至少一个界限，基于负的触摸信号值估计所确定的界限内的补偿因子，其中负值表示存在 并且将估计的补偿因子应用于触摸信号输出以补偿负像素效应的触摸信号值。