Patent ID: 8786414
Filing Date: 2014-07-22
Classification: G08C

Abstract:
1. A communication device comprising: a first receiver configured to receive an operation signal from a remote controller; a second receiver configured to receive a radio signal with a specific frequency, a power consumption of the second receiver being less than that of the first receiver; a communication module capable of transmitting the operation signal to another communication device; and a controller configured to control power supply to the first receiver and the communication module, wherein the controller is configured (i) to start power supply to the first receiver if the second receiver receives the radio signal, (ii) to start power supply to the communication module if, after having started power supply to the first receiver, the first receiver receives the operation signal within a certain first period of time after the start of power supply to the first receiver, and (iii) to start power supply to the communication module if, after having started power supply to the first receiver, the first period elapses and the first receiver has not yet received the operation signal.