| 摘要 |
An apparatus and a method for displaying visual information such as music to persons having visual deficiencies includes a housing (12) having a rear projection screen (16) and a mechanism (13) for projecting images of the information. The mechanism (13) can include a slide tray (15) for storing transparencies of the information, a projection lamp and lens, and means for moving the slides from the storage tray to the projection lamp and back again. Controls are provided for varying the brightness (27) of the projection lamp and the speed (29) at which the slides are displayed in a predetermined sequence. Also, the size of the image on the viewing screen can be varied by a control (41). In a manual mode of operation, selected by a switch (32), a foot switch (39) is available for sequencing the slides and both forward and reverse directions of display are available utilizing a switch (34). |
