| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To solve the problem that a conventional fish finder system does not enable the current finding area to be grasped on a plotter, since nothing is displayed on the surrounding of the own ship. <P>SOLUTION: Display map data from a display map generating section 12 are stored in an image memory 15, and an echo detector 18 is connected to a reception circuit 17 to which an ultrasonic transducer 16 is connected, and a water depth detecting section 19 is connected to the echo detector 18, and the water depth detecting section 19 is connected to a finding range diameter computing section 20, and a directional angle data outputting section 21 is connected to the finding range diameter computing section 20, and an output of the finding range diameter computing section 20 is connected to a display circle diameter computing section 22, and map scaling data from a map scaling data outputting section 14 are input to the display circle diameter computing section 22, and an output of the display circle diameter computing section 22 is input to a display circle generating section 23, and an output of the display circle generating section 23 is stored in the image memory 15, and an output of the image memory 15 is input to an image displaying circuit 24, and an output of the image displaying circuit 24 is input to an image displaying device 25. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
