Invention Grant
US09524067B2 Capacitive touch screen with adaptive touch sensing threshold based on sharpness of the capacitive data
有权
电容式触摸屏，具有基于电容数据清晰度的自适应触摸感应阈值
- Patent Title: Capacitive touch screen with adaptive touch sensing threshold based on sharpness of the capacitive data
- Patent Title (中): 电容式触摸屏，具有基于电容数据清晰度的自适应触摸感应阈值
-
Application No.: US14484372Application Date: 2014-09-12
-
Publication No.: US09524067B2Publication Date: 2016-12-20
- Inventor: Jenn Woei Soo , Kusuma Adi Ningrat
- Applicant: STMicroelectronics Asia Pacific Pte Ltd
- Applicant Address: SG Singapore
- Assignee: STMicroelectronics Asia Pacific Pte Ltd
- Current Assignee: STMicroelectronics Asia Pacific Pte Ltd
- Current Assignee Address: SG Singapore
- Agency: Gardere Wynne Sewell LLP
- Main IPC: G06F3/045
- IPC: G06F3/045 ; G06F3/044
Abstract:
A capacitive touch system generates data indicative of sensed capacitance measured at capacitive sensing nodes of a capacitive touch panel. A signal processing circuit is coupled to receive the data indicative of sensed capacitance from the capacitive touch system. The signal processing circuit operates to fit a parabolic curve to the data indicative of sensed capacitance. A sharpness of the fit parabolic curve is indicative of whether touch versus hover interaction with the capacitive touch panel. A touch detection threshold is as a function of the determined sharpness. The set touch detection threshold is then applied against the data indicative of sensed capacitance in order to make a touch detection.
Public/Granted literature
- US20160077625A1 CAPACITIVE TOUCH SCREEN WITH ADAPTIVE TOUCH SENSING THRESHOLD BASED ON SHARPNESS OF THE CAPACITIVE DATA Public/Granted day:2016-03-17
Information query
