Patent ID: 8971857
Filing Date: 2015-03-03
Classification: H04L,H04W

Abstract:
1. A communication system comprising: an object communication unit provided in a controlled object; a portable machine having an identification code registered in the controlled object, the portable machine including a portable machine communication unit conducting wireless communications with the object communication unit; and a portable terminal including a portable terminal communication unit conducting wireless communications with the object communication unit and the portable machine communication unit, the controlled object further including: a communication identification code generation unit generating a communication identification code at predetermined timing, the communication identification code being necessary for the portable terminal to control the controlled object, the communication identification code differing for every generation; an authentication unit authenticating a signal containing a control description which the object communication unit receives from the portable terminal communication unit; and an object control unit controlling the controlled object, based on the control description acquired from the authentication unit, the portable machine further including a storage unit storing the communication identification code, the communication identification code being generated by the communication identification code generation unit and being received through the object communication unit and the portable machine communication unit, the portable terminal further including: an acquisition unit acquiring the communication identification code stored in the storage unit of the portable machine through the portable machine communication unit and the portable terminal communication unit; and an instruction unit generating the control description for the controlled object, the instruction unit transmitting a signal containing the control description and the communication identification code acquired by the acquisition unit to the object communication unit from the portable terminal communication unit, wherein when the authentication unit determines that the communication identification code contained in the signal which the object communication unit has received matches a latest communication identification code which the communication identification code generation unit has generated, the authentication unit forwards, to the object control unit, the control description contained in the signal which the object communication unit has received together with the communication identification code.