Patent ID: 8310451

Claim:
An information exchange device comprises an outside framework, a front panel and a back panel, wherein the front panel is embedded in the front surface of the outside framework, the back panel is embedded in the back surface of the outside framework, whereby a vacant space is formed inside of the outside framework, wherein the vacant space further comprises a control circuit used for controlling the information exchange between the information exchange device and the reading system, which comprises a micro-control unit with the control procedures therein, the back panel has a seal groove used to set a specific control procedure to the micro-control unit and a block used to fill the seal groove; a batter unit connected with the micro-control unit, which provides the power to the micro-control unit and provides the RF energy required in the communication between the information exchange device and the reading system; a keyboard unit connected with the input of the micro-control unit, which sends the corresponding RF signal to the microprocessor; a RF unit having a two-way communication links with the micro-control unit, which processes the signal transmitted by the keyboard unit and the signal received from reading system; an antenna unit connected with the RF unit, which sends the signal transmitted by the keyboard to the reading system at the working frequency of 2.45 GHz and receives the RF signals sent by the reading system at the working frequency of 2.45 GHz; a LCD display unit connected with the output of the micro-control unit, which shows the corresponding information sent by the keyboard unit and the corresponding information sent by the reading system; a near-distance RFID with the working frequency of 13.56 MHz, which is used for the short distance RF communication.