发明名称 |
LAGEKODIERUNGSANORDNUNG |
摘要 |
A position encoding arrangement is provided having a position locating area from which the positioned co-ordinates of a probe in the area can be found. The invention provides for a change of magnification of the arrangement so that movement of the probe produces a scaled down change in positional co-ordinates. A preferred embodiment provides a light beam encoder for use in conjunction with a C.R.T. type display where a probe is detected and a marker appears on the screen. With the invention change in magnification allows scaled down movement of the marker to allow accurate positioning. |
申请公布号 |
DE2702532(A1) |
申请公布日期 |
1977.07.28 |
申请号 |
DE19772702532 |
申请日期 |
1977.01.21 |
申请人 |
THE MARCONI CO.LTD. |
发明人 |
FRANK BIRD,PETER;BRIAN MCKEE,FREDERICK |
分类号 |
G06F3/033;G06F3/042;G06F3/048;(IPC1-7):G06F3/02;G06K15/20 |
主分类号 |
G06F3/033 |
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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