Abstract: Disclosed is a distance measuring system for measuring distance of a first transceiver from second transceivers, comprising the first transceiver having a first time zone, a second transceiver having a second time zone, and a control unit having a control-unit time zone. The second transceiver ascertains a time-zone relationship between the second transceiver and the first transceiver, and transmits the time-zone relationship to the control unit. The control unit receives the time-zone relationship, and ascertains, using the received time-zone relationship, a time-zone relationship between the control-unit time zone and the first transceiver. The first transceiver transmits at a defined instant in time or for a defined time period of the first time zone a distance measurement command to the second transceiver. The first transceiver transmits a measurement signal at a further defined instant in time, and the second transceiver switches from an inactive into an active receiving or measuring state.

Abstract: The communication apparatus has at least two transceiver units. One of the transceiver units receives in a predetermined ranging session a time signal from an external device unit, which time signal comprises a device clock state of the device unit at a reference time in a device time zone. The receiving transceiver unit generates a synchronization dataset describing a time relationship between an apparatus clock state at the reference time in the apparatus time zone and the device clock state at the reference time in the device time zone. The receiving transceiver unit initiates a synchronization session, in which the receiving transceiver unit defines a synchronization time grid which has a periodically repeating synchronization block, which provides a session round. In a predetermined session slot of the session round of the periodically repeating synchronization block, the receiving transceiver unit transfers the synchronization dataset to the others of the transceiver units.

Abstract: Disclosed is a distance measuring system for measuring distance of a first transceiver from second transceivers, comprising the first transceiver having a first time zone, a second transceiver having a second time zone, and a control unit having a control-unit time zone. The second transceiver ascertains a time-zone relationship between the second transceiver and the first transceiver, and transmits the time-zone relationship to the control unit. The control unit receives the time-zone relationship, and ascertains, using the received time-zone relationship, a time-zone relationship between the control-unit time zone and the first transceiver. The first transceiver transmits at a defined instant in time or for a defined time period of the first time zone a distance measurement command to the second transceiver. The first transceiver transmits a measurement signal at a further defined instant in time, and the second transceiver switches from an inactive into an active receiving or measuring state.

Abstract: An access arrangement for a vehicle comprises a vehicle transmission/reception device configured to transmit multiple interrogation signals to a mobile identification transmitter, receive corresponding response signals from the mobile identification transmitter in response to the transmitted interrogation signals, and determine a respective time interval that elapsed between the transmission of an interrogation signal and the reception of a corresponding response signal. Furthermore, the access arrangement comprises a vehicle control device configured to output a different control command based on a change in the specific time intervals for two transmitted interrogation signals. The interrogation signals and response signals are in accordance with the UWB standard.

Abstract: An access system for an object with a transmission unit arranged in the object and a transponder unit arranged in a portable device. The transmission unit emits request signals at regular intervals. The transponder unit, in response to a triggering event, stores a current position of the object and determines its own position at regular intervals. The transponder unit deactivates the transmission unit when the transponder unit detects, based on the determined position, that the transponder unit has left a first zone, wherein the first zone is arranged around the object, and wherein the transmission unit does not emit any request signals while the transmission unit is deactivated. The transponder unit furthermore activates the transmission unit when the transponder unit detects, based on the determined position, that the transponder unit has entered an adjusted first zone, wherein the adjusted first zone is arranged around the object.

Abstract: The present disclosure relates to transmitter and/or receiver units (transceivers), such as in particular motor vehicle transceivers. The teachings thereof may be embodied in methods and devices for detecting changes in the positions of transceivers relative to each other. For example, a system may include: a distance determining device to measure a current distance value corresponding to a respective distance of two of the transceivers relative to each other; and a comparator to compare the at least one current distance value and with a stored reference distance value.

Abstract: A mobile identification transmitter for an access arrangement of a vehicle, said access arrangement being supplied by a vehicle battery, comprises an identification-transmitter-side receiving device for receiving a vehicle-side request signal. Furthermore, it comprises an identification-transmitter-side transmitting device for emitting a response signal in response to the reception of the vehicle-side request signal. Finally, the mobile identification transmitter has an identification-transmitter-side control device for identifying and/or estimating the state of charge of the vehicle battery, for comparing the identified and/or estimated state of charge with a predetermined threshold value, and for identifying an emergency state of the access arrangement if the identified and/or estimated state of charge falls below the predetermined threshold value.

Abstract: A method and apparatus for determining a propagation delay and/or a distance between a plurality of transceivers, in particular between transceivers outside and/or as part of a motor vehicle, wherein the transceivers are each designed: to generate identical codes in a plurality of these transceivers, using a calculation method known to them, from at least one starting value transmitted, in particular, from one of the transceivers to the further transceivers, to transmit one or more messages from at least one of the transceivers to one or more further ones of the transceivers, which messages each contain at least one of the codes, to determine at least one propagation delay and/or at least one distance between at least two of the transceivers, in particular from the propagation delay and/or transmission times of the one or more messages.

Abstract: An access arrangement for a vehicle comprises a vehicle-side unlocking device for unlocking a locking mechanism. Furthermore, it comprises a vehicle-side rechargeable electrical energy storage device which is set up to supply the unlocking device with energy independently of the on-board power supply of the vehicle. Moreover, the access arrangement has a vehicle-side energy supply device comprising a first section for receiving wirelessly transmitted energy and for converting the transmitted energy into electrical energy, and a second section for charging the vehicle-side rechargeable electrical energy storage device. In particular, the access arrangement also comprises a vehicle-side authentication device for checking access authorization, which is supplied with energy independently of the on-board power supply by means of the vehicle-side rechargeable electrical energy storage device.

Abstract: An access arrangement for a vehicle comprises a vehicle-side unlocking device for unlocking a locking mechanism. Furthermore, it comprises a vehicle-side rechargeable electrical energy storage device which is set up to supply the unlocking device with energy independently of the on-board power supply of the vehicle. Moreover, the access arrangement has a vehicle-side energy supply device comprising a first section for receiving wirelessly transmitted energy and for converting the transmitted energy into electrical energy, and a second section for charging the vehicle-side rechargeable electrical energy storage device. In particular, the access arrangement also comprises a vehicle-side authentication device for checking access authorization, which is supplied with energy independently of the on-board power supply by means of the vehicle-side rechargeable electrical energy storage device.

Abstract: An entry system includes a transponder unit and a transmission unit which is arranged in an object. The transmission unit is designed to transmit a request to the transponder unit, and the transponder unit includes a motion sensor which is designed to detect a movement of the transponder unit and to generate motion information. The transponder unit is designed to transmit, in a first operating state, to the transmission unit, in response to the request, a reply containing the motion information, wherein the transmission unit is designed to decide on the basis of the motion information whether to activate the object.

Abstract: A method and apparatus for determining a propagation delay and/or a distance between a plurality of transceivers, in particular between transceivers outside and/or as part of a motor vehicle, wherein the transceivers are each designed: to generate identical codes in a plurality of these transceivers, using a calculation method known to them, from at least one starting value transmitted, in particular, from one of the transceivers to the further transceivers, to transmit one or more messages from at least one of the transceivers to one or more further ones of the transceivers, which messages each contain at least one of the codes, to determine at least one propagation delay and/or at least one distance between at least two of the transceivers, in particular from the propagation delay and/or transmission times of the one or more messages.

Abstract: An entry system includes a transponder unit and a transmission unit which is arranged in an object. The transmission unit is designed to transmit a request to the transponder unit, and the transponder unit includes a motion sensor which is designed to detect a movement of the transponder unit and to generate motion information. The transponder unit is designed to transmit, in a first operating state, to the transmission unit, in response to the request, a reply containing the motion information, wherein the transmission unit is designed to decide on the basis of the motion information whether to activate the object.

Abstract: An entry and starting system in an object has a control and transmission unit configured to use a radio link to interchange at least one radio signal and an ultrasonic link to interchange at least one ultrasonic signal with a portable electronic device. The control and transmission unit sets up a radio link to the portable electronic device and uses the electronic device via the radio link to stipulate at least one relevant parameter for a subsequent ultrasonic link. The control and transmission unit is additionally configured so as, following the stipulation of the parameters, to set up an ultrasonic link according to the previously determined parameters. The entry and starting system checks an authorization of the portable electronic device, the portable electronic device being detected as authorized if the at least one relevant parameter of a subsequent ultrasonic link is concordant with the at least one stipulated parameter.

Abstract: An access system for an object with a transmission unit arranged in the object and a transponder unit arranged in a portable device. The transmission unit emits request signals at regular intervals. The transponder unit, in response to a triggering event, stores a current position of the object and determines its own position at regular intervals. The transponder unit deactivates the transmission unit when the transponder unit detects, based on the basis of the determined position, that the transponder unit has left a first zone, wherein the first zone is arranged around the object and wherein the transmission unit does not emit any request signals while the transmission unit is deactivated. The transponder unit furthermore activates the transmission unit when the transponder unit detects, based on the determined position, that the transponder unit has entered an adjusted first zone, wherein the adjusted first zone is arranged around the object.

Abstract: A mobile identification transmitter for an access arrangement of a vehicle, said access arrangement being supplied by a vehicle battery, comprises an identification-transmitter-side receiving device for receiving a vehicle-side request signal. Furthermore, it comprises an identification-transmitter-side transmitting device for emitting a response signal in response to the reception of the vehicle-side request signal. Finally, the mobile identification transmitter has an identification-transmitter-side control device for identifying and/or estimating the state of charge of the vehicle battery, for comparing the identified and/or estimated state of charge with a predetermined threshold value, and for identifying an emergency state of the access arrangement if the identified and/or estimated state of charge falls below the predetermined threshold value.

Abstract: An access arrangement for a vehicle comprises a vehicle-side unlocking device for unlocking a locking mechanism. Furthermore, it comprises a vehicle-side rechargeable electrical energy storage device which is set up to supply the unlocking device with energy independently of the on-board power supply of the vehicle. Moreover, the access arrangement has a vehicle-side energy supply device comprising a first section for receiving wirelessly transmitted energy and for converting the transmitted energy into electrical energy, and a second section for charging the vehicle-side rechargeable electrical energy storage device. In particular, the access arrangement also comprises a vehicle-side authentication device for checking access authorization, which is supplied with energy independently of the on-board power supply by means of the vehicle-side rechargeable electrical energy storage device.

Abstract: An entry and starting system in an object has a control and transmission unit configured to use a radio link to interchange at least one radio signal and an ultrasonic link to interchange at least one ultrasonic signal with a portable electronic device. The control and transmission unit sets up a radio link to the portable electronic device and uses the electronic device via the radio link to stipulate at least one relevant parameter for a subsequent ultrasonic link. The control and transmission unit is additionally configured so as, following the stipulation of the parameters, to set up an ultrasonic link according to the previously determined parameters. The entry and starting system checks an authorization of the portable electronic device, the portable electronic device being detected as authorized if the at least one relevant parameter of a subsequent ultrasonic link is concordant with the at least one stipulated parameter.

Abstract: The present disclosure relates to transmitter and/or receiver units (transceivers), such as in particular motor vehicle transceivers. The teachings thereof may be embodied in methods and devices for detecting changes in the positions of transceivers relative to each other. For example, a system may include: a distance determining device to measure a current distance value corresponding to a respective distance of two of the transceivers relative to each other; and a comparator to compare the at least one current distance value and with a stored reference distance value.

Abstract: An electric circuit for controlling the access and immobilizing a vehicle has a first antenna driver (12) for driving a first antenna (19) for emitting a signal (100) in the event of identification of an ID transmitter (3) for access control of a vehicle. A second antenna driver (24) is provided for driving a second antenna (21) for emitting a signal (104) in the event of identification of an ID transmitter (3) for the immobilizer of the vehicle. In addition, the electric circuit has a receiver device (14) for receiving a signal captured by an antenna (21) for the identification of an ID transmitter (3) for the immobilizer. The first antenna driver (12) and the receiver device (14) are commonly integrated into a semiconductor chip (1).