Abstract: A tag (1) can be split into a tag (A(1-a)), a tag (B(1-b)), and a tag (C(1-c)). In the tag (A), a memory portion (A31) is included. In the tag (B), a memory portion (B32) is included. In the tag (C), a memory portion (C33), an input/output interface portion (34), and a control portion (35) are provided. The input/output interface portion (34) forms an interface for exchanging data with an external reader/writer device (not shown). The control portion (35) receives a request inputted thereto from the input/output interface portion (34) and controls the function of the tag. A split line 36 is provided between the tags (A) and (B) to allow detachment between the two tags therealong. A split line 37 is provided between the tags (B) and (C) to allow detachment between the two tags therealong. The arrangement makes it difficult to falsify data in the tag and enables an easier operation.

Abstract: A wireless communication apparatus receives an external signal, and includes (i) a received signal level determination section for detecting a power level of the received signal and (ii) a correlation detection/determination section for detecting a correlation associated with the received signal. Moreover, the wireless communication apparatus switches between reception standby states as required, the reception standby states, including: (a) a normal operation mode in which a shift to a reception state is determined in accordance with whether or not the correlation is detected by the correlation detection/determination section; and (b) a low power consumption mode in which the shift to the reception state is determined in accordance with whether or not a received signal power level is detected by the received signal level determination section. With this, power consumption can be reduced, but a range of reception power of a signal that can be received is not narrowed.

Abstract: A second wireless communication system comprises reception means for receiving a control signal transmitted by a first wireless system which defines its own communication-enabled period based on the control signal, and communication control means for determining, based on the control signal, a vacant time region in the communication-enabled period that is not utilized by the first wireless communication system, and allocating the vacant time region as its own communication time region.

Abstract: A wireless communication apparatus receives an external signal, and includes (i) a received signal level determination section for detecting a power level of the received signal and (ii) a correlation detection/determination section for detecting a correlation associated with the received signal. Moreover, the wireless communication apparatus switches between reception standby states as required, the reception standby states, including: (a) a normal operation mode in which a shift to a reception state is determined in accordance with whether or not the correlation is detected by the correlation detection/determination section; and (b) a low power consumption mode in which the shift to the reception state is determined in accordance with whether or not a received signal power level is detected by the received signal level determination section. With this, power consumption can be reduced, but a range of reception power of a signal that can be received is not narrowed.

Abstract: A tag (1) can be split into a tag (A(1-a)), a tag (B(1-b)), and a tag (C(1-c)). In the tag (A), a memory portion (A31) is included. In the tag (B), a memory portion (B32) is included. In the tag (C), a memory portion (C33), an input/output interface portion (34), and a control portion (35) are provided. The input/output interface portion (34) forms an interface for exchanging data with an external reader/writer device (not shown). The control portion (35) receives a request inputted thereto from the input/output interface portion (34) and controls the function of the tag. A split line 36 is provided between the tags (A) and (B) to allow detachment between the two tags therealong. A split line 37 is provided between the tags (B) and (C) to allow detachment between the two tags therealong. The arrangement makes it difficult to falsify data in the tag and enables an easier operation.

Abstract: A system controller is provided between a communication device and an electronic device which performs communication using the communication device. The system controller controls the communication device, in accordance with device information from the electronic device, a request from the application, and channel information from the communication device. With this arrangement, the communication device can realize an effective low-power-consumption operation, while having a high degree of versatility.

Abstract: A second wireless communication system comprises reception means for receiving a control signal transmitted by a first wireless system which defines its own communication-enabled period based on the control signal, and communication control means for determining, based on the control signal, a vacant time region in the communication-enabled period that is not utilized by the first wireless communication system, and allocating the vacant time region as its own communication time region.