| 发明名称 |
Video and data projection screen is protected from contact damage by sensors located behind the screen |
| 摘要 |
<p>A video and data projection screen has a number of sensors located behind it that detect when a hand held pointer is in close proximity to the surface. This results in an acoustic or optical warning alarm being generated to prevent damaging contact with the surface.</p> |
| 申请公布号 |
DE10326436(A1) |
申请公布日期 |
2004.08.19 |
| 申请号 |
DE2003126436 |
申请日期 |
2003.06.10 |
| 申请人 |
SCHRODT, STEFAN |
发明人 |
|
| 分类号 |
G03B21/56;G08B7/06;(IPC1-7):G08B7/06 |
主分类号 |
G03B21/56 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
