公开(公告)号：US09689810B2

公开(公告)日：2017-06-27

申请号：US14474322

申请日：2014-09-02

Applicant: HTC Corporation

Inventor： Chuan-Ying Hsu ,  Tung-Hao Hsu ,  Chih-Hao Yan

IPC: G06F3/045 ,  G01N21/94 ,  H04M1/725

CPC classification number: G01N21/94 ,  G01N2021/945 ,  H04M1/72519 ,  H04M2250/12

Abstract: An automatic calibration method suitable for an electronic apparatus comprising a proximity sensor is disclosed. The automatic calibration method includes steps of: resetting data comprising a minimal index and a maximal index when a specific function is activated; updating the minimal index and the maximal index according to readings from the proximity sensor; resetting the minimal index when the proximity sensor detects a far event according to a threshold value of the proximity sensor; resetting the maximal index when the proximity sensor detects a near event according to the threshold value; and, re-calculating the threshold value according to the minimal index or the maximal index every time the minimal index or the maximal index is updated.