Data carrier with disc shaped carrier structure

A data carrier for a non-contact data communication with a control station, the control station being provided with a coin handling device, which comprises an encoder/decoder and a slot, and controlling a passage to an area or space by checking and/or changing data of authorization of passage on the data carrier by said encoder/decoder when the data carrier is inserted into said slot the coin handling device, the data carrier comprising:

• a carrier base structure having the form of a disk adapted to be handled in the manner of a coin by said coin handling device;
• a non-volatile, electrically erasable and programmable memory designed to store the data of authorization of passage;
• a data sending-receiving unit for receiving data from the control station and transmitting data to the control station, said sending-receiving unit being designed for radio transmission with a carrier frequency field up to 250 kHz, and having a magnetic antenna;
• a liquid crystal display for displaying data;
• a central processing unit for making visible on the liquid crystal display the data stored in the memory;
• and
• a solar cell unit for providing power to the liquid crystal display and to the central processing unit for making visible the data on the liquid crystal display;
• the liquid crystal display and the solar cell unit being arranged on a first side of the disk-shaped base structure, and the magnetic antenna being arranged on the second side of the disk-shaped base structure.

A data carrier for a non-contact data communication with a control station, the control station being provided with a coin handling device and controlling a passage to an area or space by checking and/or changing data of authorization of passage on the data carrier when the data carrier is presented to the control station, the data carrier comprising;

• a carrier base structure having the form of a disk adapted to be handled in the manner of a coin, and being made of plastic, the circumference of said disk-shaped base structure being enclosed by a metallic ring interrupted by a slot;
• a non-volatile, electrically erasable and programmable memory designed to store the data of authorization of passage;
• a data sending-receiving unit designed for radio transmission with a carrier frequency field up to 250 kHz for receiving data from the control station and transmitting data to the control station, the sending-receiving unit having magnetic antenna;
• a liquid crystal display for displaying data;
• a central processing unit for making visible on the liquid crystal display the data stored in the memory;
• and
• a solar cell unit for providing power to the liquid crystal display and to the central processing unit for making visible the data on the liquid crystal display.

A data carrier for a non-contact data communication with a control station, the control station being provided with a coin handling device and controlling a passage to an area or space by checking and/or changing data of authorization of passage on the data carrier when the data carrier is presented to the control station, the data carrier comprising;

• a carrier base structure having a form of a disk adapted to be handled in the manner of a coin;
• a non-volatile, electrically erasable and programmable memory designed to store the data of authorization of passage;
• a data sending-receiving unit for receiving data from the control station and transmitting data to the control station;
• a liquid crystal display for displaying data;
• a central processing unit for making visible on the liquid crystal display the data stored in the memory;
• a solar cell unit for providing power to the liquid crystal display and to the central processing unit for making visible the data on liquid crystal display, and;
• a ring surrounding the disk-shaped base structure and provided with a U-hook, the first shank of which is rigidly connected to the ring and the second shank of which has a lock on the end that can be connected with a corresponding locking element in the ring.