NETWORK SYSTEM, NETWORK SYSTEM CONTROL METHOD, AND CONTROL DEVICE

Japanese Patent JP2017010489

A

PROBLEM TO BE SOLVED: To allow a system in which a contract stipulates a period when a control device can use functions of a server to perform a process to cope with a case where the control device tries to use the functions of the server in a period other than the period based on the contract.SOLUTION: In a network system 1, a maintenance server 17 stores a contract management database 512 indicating a period when a POS terminal 13 can use functions of the maintenance server 17 according to a contract, determines whether the contract has expired or not on the basis of the contract management database 512 on the POS terminal 13 if log data D11 is received, and transmits a response including information indicating that the contract has expired to the POS terminal 13 if the contract has expired. If the POS terminal 13 receives the response including the information indicating that the contract has expired, it lengthens an interval to transmit the log data D11 compared with a prescribed interval.SELECTED DRAWING: Figure 2

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KAWAMORI TAKASHI

JP2015128463A

January 12, 2017

June 26, 2015

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SEIKO EPSON CORP

G06F11/34; G06Q50/10

Kazuaki Watanabe
Keisuke Nishida
Satoshi Nakai

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