Patent ID: 6859205

Claim:
An apparatus for drawing a line connecting a start point to an end point, the start and end points both being presented on display means and being represented by mutually different sets of coordinates, the apparatus comprising: first and second data storage means, each said storage means accepting a plurality of input coordinate data and sequentially outputting one item of these data after another on a first in, first out basis; adding means for receiving and adding together the respective coordinate data output from the first and second data storage means and outputting added data; and divide-by-two means for dividing the added data by two and outputting divided data, wherein the coordinate data output from the first and second data storage means are input to the first data storage means, and wherein the divided data is input from the divide-by-two means to the second storage means, and wherein the line connecting the start and end points together is drawn on the display means in accordance with the divided data output from the divide-by-two means.