Patent ID: 6941481

Claim:
An information processing apparatus comprising: a first processing section; and a second processing section, wherein: the first processing section is operable to operate in accordance with a first clock having a first frequency, produce an output for initiating the second processing section, and output information to be processed by the second processing section, the second processing section has an operation state and a stop state, in the operation state the second processing section operates in accordance with a second clock having a second frequency which is higher than the first frequency, in the stop state the second processing section stops operating in accordance with the second clock, the second processing section in the stop state is operable to make a transition from the stop state to the operation state based on the output for initiating the second processing section output from the first processing section, the second processing section in the operation state is operable to perform a predetermined process based on the information output from the first processing section, the second processing section in the operation state is operable to make a transition from the operation state to the stop state without interaction with the first processing section, and wherein the first processing section is operable, when the second processing section is in the stop state, to determine whether it is necessary to initiate the second processing section and to provide the second processing section, if necessary, the output for initiating the second processing section.