发明授权
- 专利标题: Position indicator, circuit component and input device
- 专利标题(中): 位置指示器,电路组件和输入设备
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申请号: US12684428申请日: 2010-01-08
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公开(公告)号: US08212550B2公开(公告)日: 2012-07-03
- 发明人: Yuji Katsurahira , Hiroyuki Fujitsuka , Kimiyoshi Hosaka
- 申请人: Yuji Katsurahira , Hiroyuki Fujitsuka , Kimiyoshi Hosaka
- 申请人地址: JP Saitama
- 专利权人: Wacom Co., Ltd.
- 当前专利权人: Wacom Co., Ltd.
- 当前专利权人地址: JP Saitama
- 代理机构: Seed IP Law Group PLLC
- 优先权: JP2009-033978 20090217
- 主分类号: G01B7/30
- IPC分类号: G01B7/30 ; G01R33/00 ; G06F3/033
摘要:
A position indicator includes a tubular core member comprising a first magnetic core, a second magnetic core, a first coil, a second coil, a rod, a pen-pressure detecting element, a capacitor, and a switch. At least one of the first and second magnetic cores includes a recessed portion extending in the axial direction so as to form a through-hole when the first and second magnetic cores are combined, and the rod is inserted through the hole. The first coil is wound around the tubular core member, and the second coil is wound around the second magnetic core. The pen-pressure detecting element detects a pressure applied to an end of the rod (i.e., the pen tip). The capacitor is connected to the first coil to form a resonant circuit. The switch controls “on” and “off” states of the second coil to calculate a rotation angle of the position indicator.
公开/授权文献
- US20100207607A1 POSITION INDICATOR, CIRCUIT COMPONENT AND INPUT DEVICE 公开/授权日:2010-08-19
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