 (mainly the pixel number control circuit 00). It should be noted that the overall structure of the network image-taking system is similar to that of Embodiment 0.  [0000] First, in the moving image taking state with a low resolution of 00 frames per second (image-taking state in the first image-taking mode), when, at Step 00, an order to switch to high-resolution image-taking (second image-taking mode) is entered from any of the ordinary computers C0 to C0 to the control computer CC, then the procedure advances to Step 00, and the control computer CC (pixel number control circuit 00) dete