초록 ▼

A code signal generator (3) of a system for protecting against theft remains in the motor vehicle while it is not operating, this code signal generator (3) is disabled as soon as a door of the motor vehicle is opened and closed again and/or a security device (8, 9) is locked with another authorized

A code signal generator (3) of a system for protecting against theft remains in the motor vehicle while it is not operating, this code signal generator (3) is disabled as soon as a door of the motor vehicle is opened and closed again and/or a security device (8, 9) is locked with another authorized code signal generator (3). The disabled code signal generator (3) is enabled again only if, after the opening of a door or after the unlocking of a locking device (8, 9), another code signal generator (3) in the vicinity outside the vehicle is recognized as authorized and a request signal which is triggered manually by the user for enabling the disabled code signal generator (3) is received by the control unit (1).

대표청구항 ▼

1. A method for protecting motor vehicles against theft, which has the following method steps:one or more security devices are locked or unlocked if a code signal received in a control unit from a code signal generator has been successfully authenticated, and the function of a code signal generator

1. A method for protecting motor vehicles against theft, which has the following method steps:one or more security devices are locked or unlocked if a code signal received in a control unit from a code signal generator has been successfully authenticated, and the function of a code signal generator located in the interior of the motor vehicle is at least partially disabled if the motor vehicle is not operating and a door of the vehicle is opened and closed and another code signal generator in the vicinity is recognized as being authorized and/or another code signal generator in the vicinity is recognized as being authorized after the motor vehicle has been locked, wherein the disabled code signal generator located in the vehicle is enabled only if, after the release of one or more security devices using another code signal generator and/or after a door opens, another code signal generator in the vicinity is recognized as being authorized and an enable request signal of the disabled code signal generator which is triggered manually by the user is received by the control unit. 2. The method as claimed in claim 1, wherein the disabled code signal generator is enabled only within a predetermined time period after the release of a security device.3. The method as claimed in claim 1, wherein the code signal generator is requested by the control unit to transmit the enable request signal on the basis of its spatial position with respect to a transmitting and receiving unit.4. The method as claimed in claim 1, wherein the enable request signal of the disabled code signal generator is triggered by at least a single activation of one or more switches of the disabled code signal generator.5. A device for protecting motor vehicles against theft, which has a control unit and a plurality of code signal generators,the code signal generators each having at least one transmitter which transmits code signals which have authentication data and control data, and the control unit or the code signal generator having a switching unit for disabling a code signal generator located in the motor vehicle, which switching unit at least partially disables the function of the code signal generator if the motor vehicle is not operating and a door of the vehicle is opened and closed and the control unit recognizes another code signal generator in the vicinity as being authorized and/or recognizes another code signal generator in the vicinity as being authorized after the motor vehicle is locked, wherein the control unit has a switching unit for enabling disabled code signal generators which enables the disabled code signal generator if, after the release of one or more security devices using another code signal generator and/or after a door opens, another code signal generator in the vicinity is recognized as being authorized and after reception of a manually triggered enable request. 6. The device as claimed in claim 5, wherein the enabling of the disabled code signal generator takes place in the control unit itself or as a result of the transmission of a signal to a switching unit of the code signal generator.7. The device as claimed in claim 5, wherein each code signal generator has at least one switch which transmits an enable request signal when activated.8. The device as claimed in claim 5, wherein the control unit has a transceiver unit for receiving a manually triggered enable request signal and also for transmitting signals to the code signal generators.9. A method for protecting motor vehicles against theft, comprising the steps:unlocking or locking at least one security device if a code signal received in a control unit from a code signal transceiver has been successfully authenticated, and disabling the function of a code signal transceiver located in the interior of the motor vehicle at least partially if the motor vehicle is not operating and another code signal transceiver in the vicinity is recognized as being authorized, wherein the disabled code signal transceiver located in the vehicle is enabled only if after a door opens, another code signal transceiver in the vicinity is recognized as being authorized and an enable request signal of the disabled code signal transceiver which is triggered manually by the user is received by the control unit. 10. The method as claimed in claim 9, wherein the step of disabling the function of the code signal transceiver is performed only if a door of the vehicle is opened and closed.11. The method as claimed in claim 9, wherein the step of disabling the function of the code signal transceiver is performed only after the motor vehicle has been locked.12. The method as claimed in claim 9, wherein the disabled code signal generator located in the vehicle is enabled only if in addition one or more security devices are released using another code signal generator.13. The method as claimed in claim 9, wherein the disabled code signal generator is enabled only within a predetermined time period after the release of a security device.14. The method as claimed in claim 9, wherein the code signal generator is requested by the control unit to transmit the enable request signal on the basis of its spatial position with respect to a transmitting and receiving unit.15. The method as claimed in claim 9, wherein the enable request signal of the disabled code signal generator is triggered by at least a single activation of one or more switches of the disabled code signal generator.16. A device for protecting motor vehicles against theft, comprising a control unit and a plurality of code signal transceivers, wherein the control unit or the code signal transceiver having a switching unit for disabling a code signal generator located in the motor vehicle, and wherein the switching unit at least partially disables the function of the code signal generator if the motor vehicle is not operating and a door of the vehicle is opened and closed and the control unit recognizes another code signal generator in the vicinity as being authorized and/or recognizes another code signal generator in the vicinity as being authorized after the motor vehicle is locked, wherein the control unit has a switching unit for enabling disabled code signal generators which enables the disabled code signal generator if after a door opens, another code signal transceiver in the vicinity is recognized as being authorized and after the reception of a manually triggered enable request.17. The device as claimed in claim 16, wherein each code signal generator has at least one switch which transmits an enable request signal when activated.18. The device as claimed in claim 16, wherein the control unit has a transceiver unit for receiving a manually triggered enable request signal and also for transmitting signals to the code signal generators.19. The device as claimed in claim 16, wherein the code signal transceivers each having at least one transmitter which transmits code signals which have authentication data and control data.