Smart card with signals from contacts or coils

摘要

The smart card has an embedded integrated circuit chip for the bidirectional transfer of data via inductive coils or contacts. Within the chip is a control element (8) that generates an output (E1) dependent upon a number of inputs (E1,E2,F1,F2,G1,G2). Internally there are logic stages (20, 21) that generate signals to a timed cycle. These determine frequency values for the transmission