| 摘要 |
PROBLEM TO BE SOLVED: To distribute the latest program corresponding to a terminal device to each of a plurality of terminal devices connected to a communication network.SOLUTION: In a data management device, a type of a program loaded on an ECR as an object of program distribution and a program management code indicating the latest version to be distributed are stored in a program distribution information storage part. When a distribution confirmation request of the program is transmitted in opening and closing by each ECR, a version of each program loaded on the ECR of a transmission source is compared with information indicating the latest version. If those versions are different from each other, a response indicating that the program distribution is necessary is sent to the connected ECR. In the ECR, when the response indicating that the program distribution is necessary is sent from the data management device, distribution request of the appropriate program is transmitted to the data management device, and program data are acquired.SELECTED DRAWING: Figure 2 |
