| 摘要 |
PURPOSE:To attain sure two-dimensional picture processing as much as possible with simple constitution by providing a means driving independently the 1st and 2nd reflecting plates in nearly orthogonal directions. CONSTITUTION:The 1st and 2nd reflecting plates 10, 11 are subjected to sector scanning vertically or horizontally via the 1st and 2nd sector scan mechanisms 15, 16 driven respectively by the 1st and 2nd drive circuits 13, 14 and the supervised section is subjected to two-dimensional scanning by a prescribed beam sequentially. A reception signal is inputted to a video signal processing circuit 19 via an amplifier circuit 22, synthesized with synchronizing signals 20, 21 representing each instantaneous position of the 1st and 2nd reflection plates 10, 11 to obtain an output signal 18 as a two-dimensional picture. Since the 1st and 2nd reflection plates 10, 11 are subjected to sector scanning almost at the same time independently in nearly orthogonal directions, the two-dimensional picture processing is ensured by one channel signal processing system. |
