| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an on-vehicle communication device allowing a transmission partner to appropriately direct a light receiving range of a light receiving part. <P>SOLUTION: The on-vehicle communication device comprises: a first light receiving part for receiving a first optical signal with first directivity transmitted from a first light source of the other vehicle or road side equipment; a second light receiving part for receiving a second optical signal with second directivity higher than the first directivity, transmitted from a second light source of the other vehicle or the road side equipment; an information output part for demodulating the second optical signal received by the second receiving part and outputting information included in the second optical signal; and a control part for controlling the light receiving range of the second light receiving part. The control part detects the direction of the first light source based on the first optical signal received by the first light receiving part, and turns the light receiving range of the second light receiving part in the detected direction of the first light source. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
