Patent ID: 8314957

Claim:
A processing apparatus comprising: a wireless communication unit configured to be operable by a main power supply or a sub power supply; a first storage unit configured to be operable by the main power supply or the sub power supply and store information on settings for operation of the apparatus; a second storage unit configured to be operable by the main power supply and store information on settings for operation of the apparatus; a first determination unit configured to be operable by the main power supply or the sub power supply and determine whether electric power is currently supplied from the main power supply or from the sub power supply; a second determination unit configured to be operable by the main power supply or the sub power supply and determine whether or not power-on history information on the main power supply has been stored; a rewriting unit configured to be operable, when said first determination unit determines that electric power is currently supplied from the sub power supply and when said second determination unit determines that no power-on history information on the main power supply has been stored, to rewrite the information on the settings stored in said first storage unit, based on information on settings received from an external apparatus by said wireless communication unit; and a comparison unit configured to be operable, when the processing apparatus is operated by the main power supply, to perform comparison between the information on the settings stored in said first storage unit and the information on the settings stored in said second storage unit, wherein when said comparison unit determines that a result of the comparison does not indicate a match, the processing apparatus is started based on the information on the settings stored in said first storage unit, whereas when the result of the comparison indicates a match, the processing apparatus is started based on the information on the settings stored in said second storage unit.