公开(公告)号：US10452212B2

公开(公告)日：2019-10-22

申请号：US15485698

申请日：2017-04-12

Applicant: Apple Inc.

Inventor： Leah Gum ,  Wayne C. Westerman ,  Seyed Mohammad Navidpour ,  Shahrooz Shahparnia

IPC: G06F3/044

Abstract: In one aspect, the present disclosure relates to a method including determining which sense lines are potentially corrupted based on touch image information, measuring a sense signal on each sense line, and applying a trained best compensation factor to the measured sense signal on potentially corrupted sense lines in order to produce a corrected sense signal. The corrected sense signal eliminates active stylus signal that has cross-coupled to a touch contact (e.g., a finger or conductive stylus) and thereby mitigates errors in stylus location due to cross-coupled signal.

公开(公告)号：US10310667B2

公开(公告)日：2019-06-04

申请号：US14860364

申请日：2015-09-21

Applicant: Apple Inc.

Inventor： Alexandre Gourevitch ,  Albert Lin ,  Isaac Chan ,  Martin Paul Grunthaner ,  Prathit Bugnait ,  Seyed Mohammad Navidpour ,  Sumant Ranganathan

IPC: G06F3/044 ,  G06F3/041 ,  G06F3/0354

Abstract: Electrode configurations for reducing wobble error for a stylus translating on a surface of a touch sensor panel is disclosed. Electrodes associated with a more linear signal profile can correlate to lower wobble error. In some examples, electrodes can be configured such that the signal profile associated with each electrode is spread to be wider, and thus, more linear. In some configurations, electrodes can include two or more bars extending along the length of the electrode with each bar electrically connected to one another at one or both ends. Bars can be of non-uniform width or spacing. Some configurations can include a “split bar,” which can divide a bar lengthwise in order to improve optical uniformity. In some examples, electrodes can include projections which can interleave with corresponding projections in adjacent electrodes.