In a remote control communication system, a transmitting apparatus
transmits operation information, which includes switch information
indicating the type of the switch and operation duration information, to
a receiving apparatus in a vehicle. If another operation is again carried
out on any operation switch, the transmitting apparatus transmits present
operation information with the operation information transmitted
previously. A receiving apparatus transmits the operation information and
reception duration information to a control apparatus in the vehicle.
Similarly, if other operation information is received again, the
receiving apparatus transmits the other operation information with the
previous operation information.