| 摘要 |
The invention relates to methods and to a driver for communication with a transponder, in particular a driver for installing in a motor vehicle and for communication with a mobile transponder for a vehicle-access system and/or vehicle-starting system of a motor vehicle, wherein the driver is designed in such a way that, after a first transmitting at a first transmission frequency and after receipt of a response of a transponder at the transponder resonance frequency of the transponder by the driver, and after determination of the response frequency of the response by the driver by means of a frequency-detecting device, said response frequency is set as a second transmission frequency at the driver, in particular by changing transmission pauses, which second transmission frequency corresponds to the measured transponder resonance frequency, at which the driver should then transmit, wherein the driver has a resonant circuit (2, 3, 4), which has a higher driver resonance frequency than said first transmission frequency and than said second transmission frequency of the driver. |
