发明名称 |
Visual information systems |
摘要 |
A visual information system includes an array of light emitting elements located at the side of a train track. The elements are individually energizable by a controller in response to a predetermined program stored in a memory and representative of a predetermined visual image. The controller causes selected elements to be turned ON and OFF, some repetitively, in a predetermined sequence as dictated by the program with a time span of 0.015 seconds. A sensor activates the controller upon the approach of a train so that a passenger gazing at the array as the train passes will perceive the image apparently extending over an area substantially greater than the area of said array. |
申请公布号 |
AU1392897(A) |
申请公布日期 |
1997.08.01 |
申请号 |
AU19970013928 |
申请日期 |
1997.01.10 |
申请人 |
GUY EDWARD JOHN MARGETSON;ASA HEDIN;WYATT ROY |
发明人 |
MARGETSON GUY EDWARD JOHN;HEDGES THOMAS ANDREW;WYATT ROY |
分类号 |
G09F19/22 |
主分类号 |
G09F19/22 |
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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