| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem in a conventional control system unit wherein a phenomenon that images are stopped at a moment is generated since delay is generated until abnormality of a distribution card is detected by a server and the distribution card is changed, when a distribution card for distributing image data is damaged. SOLUTION: This control system unit is so constituted that image data are supplied from an image card 2 to a distribution card 3 selected by a CPU card 1, and the image data are distributed to a network. The image card 2 is provided with a transmission buffer storing function 4 for storing the image data supplied to the distribution card 3, and a normal transmission deciding function 5 which stores how far image data are distributed normally to the network by the distribution card. When the distribution card 3 which is in a course of distribution to the network gets damaged, the defective distribution card 3 informs the trouble to the CPU card 1. Another distribution card 3 is selected by the CPU card 1 which received the information, and image data are distributed so as not to cause falling out of a packet. |
