Invention Grant
US08749520B2 Detection method for a capacitive touchpad to identify a real touch point
有权
用于电容式触摸板的识别真实触摸点的检测方法
- Patent Title: Detection method for a capacitive touchpad to identify a real touch point
- Patent Title (中): 用于电容式触摸板的识别真实触摸点的检测方法
-
Application No.: US13938036Application Date: 2013-07-09
-
Publication No.: US08749520B2Publication Date: 2014-06-10
- Inventor: Chun-Chung Huang , Tsun-Min Wang , Te-Sheng Chiu
- Applicant: Elan Microelectronics Corporation
- Applicant Address: TW Hsinchu
- Assignee: Elan Microelectronics Corp.
- Current Assignee: Elan Microelectronics Corp.
- Current Assignee Address: TW Hsinchu
- Agency: Muncy, Geissler, Olds & Lowe, P.C.
- Priority: TW98121462 20090625
- Main IPC: G06F3/045
- IPC: G06F3/045
Abstract:
A two-step detection for a capacitive touchpad to identify a real touch point first detects the self capacitances from multiple capacitance sensor traces of the capacitive touchpad to identify any touch point on the capacitive touchpad and then, if multiple touch points are detected, further detects the mutual capacitance at one of the detected touch points to identify whether it is a real touch point.
Public/Granted literature
- US20130293514A1 Detection Method for a Capacitive Touchpad to Identify a Real Touch Point Public/Granted day:2013-11-07
Information query
