| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To switch and display an original display at a display position in an early stage when an erroneous display plate is displayed at the display position of the display plate. <P>SOLUTION: In a leaf type display machine, a display control board 96 discriminates the display plate at the display position from the number of pulses of pulse signals output by a motor driving circuit 304 and also discriminates the display plate at the display position from the number of times of detecting the passing of the magnetic body of the display plate by a magnetic sensor 106. When the two discriminated results do not match, the number of pulses of the pulse signals output by the motor driving circuit 304 is reset on the basis of the detected result of the magnetic sensor 106 and a stepping motor 121 is rotationally driven. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
