| 摘要 |
<p>When a driver sets a CD to an audio signal reproducing unit (2) during driving, the audio signal reproducing unit (2) reads necessary information from the CD to start paying a first music, and at the same time outputs tempo information to a wiper drive signal generating unit (3). A wiper unit (4), when a wiper lever is set to an intermediate speed, outputs 1 Hz of set speed information, 0.5-1.5 Hz of variable-range information, and an encoder pulse signal for a wiper drive motor. The wiper drive signal generating unit (3) sets a wiper drive speed to 0.9 Hz as a result of computation, and outputs 900 Hz as a servo system reference signal. Accordingly the wiper is driven in synchronization with the music's playing tempo.</p> |
