| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To realize simplification of a communication means for information transmission between devices in a device provided with a rain drop detection device and a wiper driving device. <P>SOLUTION: The communication device between devices is provided with the rain drop detection device 20 and the wiper driving device 10 for performing wiping operation of wipers 5a, 5b, is used for a wiper control device for controlling the wiping operation for wiping the rain drop deposited on a windshield by the wiper driving device 10 according to an amount of rain drop detected by the rain drop detection device and performs transmission/receiving between the rain drop detection device and the wiper driving device. The communication device is provided with communication means 19, 29 having one transmission line L for transmitting a signal in a single direction to the wiper driving device; transmission means 19a, 19d arranged at a wiper driving device side and being subjected to short-circuit of a potential of the signal transmitted in the single direction through the transmission line L; and recognition means 29b, 25i arranged at a rain drop detection device side and recognizing transmission information in an opposite single direction from the wiper driving device to the rain drop detection device based on the short-circuited signal. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
