Electronic business card and data transceiver

A data transceiver for an electronic business card, comprising a sensor antenna for receiving signals from and transmitting signals to said electronic business card and an electronic circuit, further comprising:

• a driver/amplifier-modulation/demodulation circuit, amplifying, modulating and demodulating signals received by said sensor antenna data;
• a memory circuit, storing data from driver/amplifier-modulation/demodulation circuit;
• a first input/output circuit, transmitting signals between said memory circuit and an external device;
• a second input/output circuit, transmitting signals via a cable terminal to said electronic business card;
• a central processing unit, controlling said driver/amplifier-modulation/demodulation circuit, said memory circuit, said first input/output circuit and said second input/output circuit, and performing processing of data.

An electronic business card with data transceiver, comprising:

• a sensor antenna, for receiving and transmitting signals that are stored imnternally;
• a bidirectional interface, performing receiving and transmitting of data through said sensor antenna;
• a first interface with contact terminals, transmitting data from and to an external device;
• a timer circuit, generating a timer signal;
• a memory circuit, storing data;
• a memory management unit, controlling said memory circuit;
• a second interface with a connector, transmitting data from and to an external device;
• and
• a central processing unit, controlling said bidirectional interface, said first interface, said timer circuit, said memory management unit and said second interface, and performing processing of data.