Patent ID: 11863721
Assignee: RICOH COMPANY, LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 7:
8. A non-transitory processor-readable storage medium having instructions stored thereon, which when executed by one or more processors, cause the one or more processors to implement a method of controlling a control device that includes a first control unit, a second control unit, and a power supply controller, the method comprising:
operating the first control unit including a first controller in a first operation mode;
powering off the first control unit in a second operation mode in which a power consumption is lower than a power consumption in the first operation mode;
operating the second control unit including a second controller in the first operation mode and in the second operation mode;
controlling power supply to the first control unit and power supply to the second control unit by the power supply controller;
performing communication between the first control unit and the second control unit through a communication interface of the second control unit;
stopping an operation of the communication interface in the second operation mode; and
in response to detection of an abnormality of the second controller in the second operation mode by the second control unit,
causing the communication interface to start the operation and
causing the power supply controller to activate the first control unit.