US Patent 7577748 Information device and controlling method of the same

An information device disclosed herein includes a communicator which communicates with a host, wherein, in a heat release mode, the communicator transmits a reply that the data has not been properly received to the host at a given ratio even when the data has been properly received; a heat-producing internal unit which operates according to the data received by the communicator, the heat-producing unit producing heat by operating continuously; a temperature detector which detects a temperature of the internal unit; and a first mode changer which changes the communicator from a normal mode to the heat release mode when the temperature detected by the temperature detector is a first set value or higher.