| 摘要 |
<p>PURPOSE:To ensure the equalization of quality of data and the reduction of quantity of data by collecting data at an even rate within a fixed time of the plane coordinates and then equalizing the input data. CONSTITUTION:A digitizer main body 1 is provided together with a map 2 evolved onto the board surface of the body 1, a cursor 3 which traces the contour lines on the map 2, a CPU computer main body 4, a CRT 5, a magnetic disk 6 serving as a memory device, and a keyboard 8. An operator adopts the most distant input coordinate data that is kept within a thinning distance to the input coordinate data part where many coordinate data inputted from a keyboard 7 are included with high density within the thinning distance set previously in response to the operating purpose. Meanwhile other input coordinate data are thinned. At the same time, the input coordinate data are all adopted with no thinning to an input coordinate data part that includes an array of input coordinates exceeding the thinning distance with low data density. Thus it is possible to automatically equalize the density of adopted data and to reduce the quantity of data.</p> |
