Invention Grant
- Patent Title: Capacitive touch pad configured for proximity detection
- Patent Title (中): 配置用于接近检测的电容式触摸板
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Application No.: US14205157Application Date: 2014-03-11
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Publication No.: US09019236B2Publication Date: 2015-04-28
- Inventor: Laurent Beyly , Cyril Troise , Maxime Teissier
- Applicant: STMicroelectronics (Rousset) SAS
- Applicant Address: FR Rousset
- Assignee: STMicroelectronics (Rousset) SAS
- Current Assignee: STMicroelectronics (Rousset) SAS
- Current Assignee Address: FR Rousset
- Agency: Seed IP Law Group PLLC
- Priority: FR1004665 20101201
- Main IPC: G06F3/041
- IPC: G06F3/041 ; G06F3/044 ; H03K17/955 ; H03K17/96

Abstract:
The present disclosure relates to a method for controlling a touch pad, comprising an object locate mode for locating an object on the touch pad comprising steps of: determining a measurement of capacitance of each of the pairs of electrodes of the touch pad, each pair comprising a row electrode and a column electrode transverse to the row electrode, comparing each measurement with a first detection threshold, and if the comparison of at least one measurement with the first threshold reveals the presence of an object on the touch pad, locating the object on the touch pad according to the capacitance measurements, the method comprising a proximity detection mode comprising steps of: determining a measurement representative of the capacitance between one or two electrodes and one or two other electrodes of the touch pad, and comparing a measurement obtained with a second detection threshold different from the first threshold.
Public/Granted literature
- US20140192021A1 CAPACITIVE TOUCH PAD CONFIGURED FOR PROXIMITY DETECTION Public/Granted day:2014-07-10
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