Invention Grant
- Patent Title: Pointer detection apparatus and pointer detection method
- Patent Title (中): 指针检测装置和指针检测方法
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Application No.: US12750502Application Date: 2010-03-30
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Publication No.: US08896547B2Publication Date: 2014-11-25
- Inventor: Yasuo Oda , Yoshihisa Sugiyama
- Applicant: Yasuo Oda , 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: JP2009-145879 20090618
- Main IPC: G06F3/041
- IPC: G06F3/041 ; G06F3/0488 ; G06F3/044 ; G08C21/00 ; H04L17/14 ; G06F3/046

Abstract:
Disclosed herein is a pointer detection apparatus, including: a conductor pattern including a plurality of first conductors disposed in a first direction and a plurality of second conductors disposed in a second direction; a multi-frequency signal production circuit configured to produce a plurality of signals of different frequencies; a first conductor selection circuit configured to selectively supply the signals of different frequencies to those first conductors, between which N ones of the first conductors are interposed, N being a predetermined integer equal to or greater than 0; a second conductor selection circuit configured to selectively receive detection signals from the second conductors; and a signal detection circuit configured to obtain signals of individual frequencies, corresponding to the signals of different frequencies produced by the multi-frequency signal production circuit, which are representative of coupling states at cross points between the first conductors and the second conductors and are received from said second conductor selection circuit.
Public/Granted literature
- US20100321313A1 POINTER DETECTION APPARATUS AND POINTER DETECTION METHOD Public/Granted day:2010-12-23
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