Device for activating an electrically or electronically controlled device from an energy-saving passive state

摘要

Device for activating an electrically or electronically controlled device from an energy-saving, passive state, in particular a system for closing and / or opening, in particular for access and / or authorization and / or other services for a radio remote control, for controlled front doors, for motor vehicles or the like, which enables a long range and a long battery life of the second device, with a first device in the motor vehicle and with an associated second device such as an electronic key, an ID transponder, a smart card or the like, the two devices have transmitters and / or receivers for electromagnetic signals for their intended operation. This is achieved by the first device sending a cyclically repeated signal for the activation and / or authentication of the second device in a first data protocol within a first transmission time interval and with a first cycle time.