| 摘要 |
<p>PURPOSE:To prevent the content of a former display area from remaining in a new display area and to enhance a visual confirming property, by attenuating the data of the former display area when the relative position of the position of a radar equipment and a display area is changed. CONSTITUTION:A radar video signal supplied to an interface part 11 is converted to digitalized data by an A/D converter 13 and said data is written in an image memory part 16 through an input buffer part 14 and an operator 15. When the writing of data is finished, a memory timing control part 24 changes over a multiplexer part 25 so as to guide address data outputted from an attenuation processing control part 29 to the image memory part 16. Whereupon, the image memory part 16 outputs data of the address corresponding to the output address data from the control part 29 to an attenuation operating part 30. When the relative position of the position of a radar equipment and a display area changes, the image data coming to an attenuation processing object of the memory part 16 receives the control of the control part 29 and attenuated in an exponential function manner by the operating part 30.</p> |
