Communication system and communication device

A communication device comprising:

• an input unit inputting user operations;
• a communication unit performing bidirectional communication;
• and
• a control unit controlling operations of the device,
• wherein the control unit allows the communication unit to transmit a remote control code with respect to an operation target device in accordance with the user operation to the input unit and repeatedly executes a status check communication procedure including transmission of a status inquiry and waiting for receiving a status response from the operation target device after transmitting the remote control code at given time intervals during which the communication unit is in a dormant state.

A communication device comprising:

• a communication unit performing bidirectional communication with a remote controller;
• a host function unit to be an operation target by a remote control code received by the communication unit;
• and
• a control unit controlling operations of the device,
• wherein the control unit manages a status of the host function unit and allows the communication unit to transmit a status response in response to a status inquiry from the remote controller received at the communication unit.