Patent ID: 8381001

Claim:
A command processing apparatus, comprising: a first processor started irrespective of a state of a main power source; and a second processor started when the main power source is in an on state while stopped when the main power source is in an off state, wherein said first processor is provided with a first determiner which repeatedly determines whether or not a start command is issued by an external device when the main power source is in the off state, a first changer which changes the state of the main power source to the on state when a determination result of said first determiner is updated from a negative result to a positive result, and a second changer which changes the state of the main power source to the off state in response to a power-source off instruction issued by an issuer; the second processor is provided with a command processor which executes a process according to a command issued by the external device; and the command processor includes the issuer which issues the power-source off instruction toward said first processor when the command is a stop command.