| 摘要 |
PURPOSE:To make clear the mutual relation of picture in time series, by storing the reflection signal from object to be saught in a plurality of memory units sequentially and circulatingly, and diplaying the picture on same display unit depending on color. CONSTITUTION:The ultrasonic wave signal transmitted from the oscillator 3 via the transmitter 2 with the instruction of the control unit 1 is reflected at the object to be saught in water and received at the receiver 4 via the oscillator 3. The output signal is sequentially and circulatingly stored to the memory units 6a-6c via the AD converter and the memory unit selection circuit 5 through the control unit 1. The DA converter and the color selection circuit 7 display the content of memory of the units 6a-6c sequentially on the color display 8 according to the instruction of the control unit 1. Thus, the mutual relation of the pictures of time series can be made clear. |
