Patent ID: 8848256

Claim:
A controlling apparatus for controlling an apparatus having a first power mode and a second power mode as an operation mode, the apparatus comprising: a first controlling unit configured to control power supply so that power is supplied to a first circuit and a second circuit in the first power mode and so that power is not supplied to the first circuit and is supplied to the second circuit in the second power mode, wherein the first circuit includes a first storage unit for storing correction data and an execution unit for executing a process and wherein the second circuit includes a second storage unit, a receiving unit for receiving a request for acquiring the correction data, and a transmitting unit for transmitting the correction data to an external apparatus, and the second circuit is connected to the first circuit; and a second controlling unit configured to acquire the correction data from the first storage unit and store the acquired correction data in the second storage unit, prior to transition from the first power mode to the second power mode.