Invention Grant
- Patent Title: Pointer detection apparatus and detection sensor
- Patent Title (中): 指针检测装置和检测传感器
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Application No.: US12909730Application Date: 2010-10-21
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Publication No.: US08749501B2Publication Date: 2014-06-10
- Inventor: Yasuo Oda , Sadao Yamamoto , Yoshihisa Sugiyama
- Applicant: Yasuo Oda , Sadao Yamamoto , Yoshihisa Sugiyama
- Applicant Address: JP Saitama
- Assignee: Wacom Co., Ltd.
- Current Assignee: Wacom Co., Ltd.
- Current Assignee Address: JP Saitama
- Agency: Seed IP Law Group PLLC
- Priority: JP2010-074112 20100329
- Main IPC: G06F3/041
- IPC: G06F3/041

Abstract:
A pointer detection apparatus is provided, which is capable of detecting a pointed position and a pressure applied by a pointer on a detection sensor. The detection sensor includes a plurality of first conductors disposed in a first direction, a plurality of second conductors disposed in a second direction crossing with the first direction, and a pressure sensitive material disposed between the first and second conductors and having a variable resistance characteristic. When a pointer is positioned in the proximity of (but not in contact with) the detection sensor or when a pressure applied to the detection sensor by the pointer in contact with the detection sensor is equal to or lower than a threshold, detection signals corresponding to variation in electrostatic capacity between the first and second conductors are supplied. When the pressure applied to the detection sensor is higher than the threshold, detection signals corresponding to variation in resistance characteristic of the pressure sensitive material are supplied.
Public/Granted literature
- US20110234508A1 POINTER DETECTION APPARATUS AND DETECTION SENSOR Public/Granted day:2011-09-29
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