| 摘要 |
PCT No. PCT/GB90/00564 Sec. 371 Date Oct. 15, 1991 Sec. 102(e) Date Oct. 15, 1991 PCT Filed Apr. 12, 1990 PCT Pub. No. WO90/12354 PCT Pub. Date Oct. 18, 1990.A display comprises a static unit (8) on which is mounted a rotating unit (7) driven by a motor (12). The rotating unit carries light emitting diodes (6) arranged as vertical columns which sweep around a cylindrical surface. The light emitting diodes (6) are controlled by a control circuit (6) in accordance with data stored in a memory (61) so as to provide a cylindrical display. The control circuit (60) and memory (61) are located in the rotating unit 97) and the memory (612) has a capacity for storing several different images for display.
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