| 摘要 |
<p>PURPOSE:To minimize an increase in the load rate of a data transmission line by transmitting process input image data and image data on its variation information simultaneously and thus decreasing the load rate of a central computer. CONSTITUTION:On input to an input image memory 4, a process input variation processor 8 compares the contents of a last-image memory 9 with those of an input image memory 4 with regard to a previously specified signal and store variation information on different corresponding contents in a variation information memory 10. After this storage, the contents of the input image memory 4 are inputted to the last-image memory 4, wherein the contents of the input image memory one period before are therefore stored eventually. Then, a data transmitter 6 transmits the contents of the input image memory 4 and those of the variation information memory 10 in a combined state to the central computer.</p> |
