Household electric appliance, household electric system, and server apparatus

A server apparatus that enables a reserved operation of a household electric appliance from a mobile terminal by way of a network, the server apparatus comprising:

• a communicating unit that performs a communication with the mobile terminal and the household electric appliance by way of the network;
• and
• a control unit that receives information indicative of an operation start time or an operation stop time in the reserved operation of the household electric appliance from the mobile terminal by way of the communicating unit and transmits a setting signal indicative of the operation start time or the operation stop time to the household electric appliance, wherein
• the control unit, after a first transmission of the setting signal, a predetermined time before the operation start time or the operation stop time indicated by the setting signal, transmits a signal to instruct starting or stopping of the operation the predetermined time later to the household electric appliance.

A household electric appliance capable of a reserved operation of performing an operation start or stop at a set time, the appliance comprising:

• a receiving unit that receives a first setting signal indicative of an operation start time or an operation stop time in the reserved operation of the household electric appliance from a predetermined server apparatus connected by way of a network;
• a control unit that controls the operation of the household electric appliance;
• and
• a storage unit that stores data, wherein
• the control unit, after a first reception of the first setting signal, a predetermined time before the operation start time or the operation stop time indicated by the first setting signal, receives a second setting signal instructing starting or stopping of the operation the predetermined time later, stores contents of the second setting signal in the storage unit, and executes the reserved operation in accordance with the contents of the second setting signal stored in the storage unit,
• wherein the control unit, after the first reception of the first setting signal from the server apparatus, repeatedly receives the second setting signal to be transmitted with a predetermined time interval therefrom until the second setting signal is correctly accepted, and
• wherein the control unit, at the time of the correct acceptance of the second setting signal, updates the contents stored in the storage unit based on the correctly accepted second setting signal.