| 摘要 |
<p>A media presenter (10) is described that includes a carriage (20) moveable forwards and backwards along a linear presenter track (54) between a first purge position, a stacking position, and a present position. The media presenter (10) includes a sensing system that comprises: an inductive sensor (100); a resonant target (108) mounted on the moveable carriage (20) for co-operating with the inductive sensor (100) to provide positioning information about the target (108) relative to the inductive sensor (100); and an optical sensor (106) mounted on the moveable carriage (20) in the vicinity of the presenter track (54). The sensing system further comprises: a first purge target (94) having a first optical property and mounted on the presenter track (54) in the vicinity of the first purge position; and a present target (98) having a second optical property and mounted on the presenter track (54) in the vicinity of the present position.</p> |
