Patent ID: 7827149

Claim:
An electronic appliance service system configured by respectively connecting via a network an electronic appliance having a communication function and a function for recording information, an information service unit for backing up information concerning said electronic appliance, and an information recording unit for recording information in said electronic appliance, and which transfers information among said electronic appliance and said information service unit and said information recording unit, wherein said information service unit authenticates said electronic appliance in association with first authentication information based on information concerning said electronic appliance; wherein said electronic appliance sends a backup request including said first authentication information to said information service unit as a backup request of information recorded in said electronic appliance; wherein said information service unit discriminates backup request from said electronic appliance and backs up the information recorded in said electronic appliance; wherein said information service unit authenticates said information recording unit in association with second authentication information as an electronic appliance under the control of said information recording unit based on information from said information recording unit; wherein electronic appliance under the control of said information recording unit sends a restoration request including said second authentication information to said information service unit as a restoration request of information backed up in said information service unit in association with said first authentication information; and wherein said information service unit discriminates said restoration request and restores the information backed up in association with said first authentication information in electronic appliance under the control of said information recording unit.