| 发明名称 |
Touch-input screen system using optically sensed stylus features. |
| 摘要 |
<p>User-machine interaction through a touch input display screen is enhanced through the use of surface coding in the form of stylus diameter or reflectivity peripheral surface features that are sensed in optical sensing apparatus.</p> |
| 申请公布号 |
EP0309654(A2) |
申请公布日期 |
1989.04.05 |
| 申请号 |
EP19880109841 |
申请日期 |
1988.06.21 |
| 申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
GARWIN, RICHARD LAWRENCE;LEVINE JAMES LEWIS |
| 分类号 |
G06F3/042;G06F3/033;G06F3/041;G06F3/048 |
主分类号 |
G06F3/042 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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