| 摘要 |
<p>PURPOSE:To bring all data to attenuation processing, and also, to arbitrarily set the residual image time by providing an address generating means for executing read-out to an attenuation processing means of radar video data and rewrite to the same address. CONSTITUTION:In an attenuation mode, address data D6 generated from an attenuation address generating part 14 is selected by an address multiplexer 15, and attenuation processing data D4 is selected by an attenuation data multiplexer 3. A frame memory 1 reads out radar video data D3 stored in a designated address, and an attenuation function device 2 performs an attenuation processing to the data D3 and outputs it as the data D4. The data D4 is brought to comparison processing by a comparator 4, and rewritten in the address concerned of the memory 1. Also, residual image data showing a moving target written in the memory 1 is attenuated in proportion to time, and after a prescribed time, a level of the residual image data becomes zero, and the residual image time is controlled freely by the number of address data D6 generated from the residual image address generating part 14.</p> |
