| 摘要 |
In a data carrier (1) and in an integrated circuit (5), a first signal processing circuit (8) with a signal-independent power supply is provided for processing a signal stream (SF1) in accordance with a first transmission protocol, and a second signal processing circuit (9) with a signal-dependent power supply is provided for processing a signal stream (SF2) in accordance with a second transmission protocol, which signal stream (SF2) in accordance with the second transmission protocol comprises a signal characteristic, namely a lead signal (VLS), and a detection circuit (25) is provided, which detection circuit is designed for detecting the lead signal (VLS) and ensuring the supplying of the second signal processing circuit (9) with power from a power source (14) provided for the second signal processing circuit (9) following a recognition of the occurrence of the lead signal (VLS). |
