Patent ID: 8843095

Claim:
An electronic circuit system comprising a first electronic circuit device and a second electronic circuit device, the first electronic circuit device including a first antenna and a first electronic circuit connected to the first antenna, the second electronic circuit device including a plurality of second antennas and a second electronic circuit connected to one or more of the plurality of second antennas, the first and second electronic circuit devices establishing close-coupled wireless communication with each other in such a state that a part of the first electronic circuit device in which the first antenna is positioned and a part of the second electronic circuit device in which the plurality of second antennas are positioned face each other, wherein the second electronic circuit device further includes: a connection information generation unit configured to, when one or more of the plurality of second antennas each receive a communication connection update processing command transmitted from the first antenna, select one of the plurality of second antennas to be paired with the first antenna for use in close-coupled wireless communication, and generate connection information indicating that the selected second antenna is to be connected to the second electronic circuit; and a connection switching unit configured to switch the one or more second antennas connected to the second electronic circuit in accordance with the connection information, a signal is intermittently transmitted/received by the connection information generation unit using the pair of antennas for use in close-coupled wireless communication, and when intensity of the signal becomes equal to or lower than a threshold, the connection information generation unit selects one of the plurality of second antennas to be paired with the first antenna for use in close-coupled wireless communication, and generates the connection information.