Abstract: A method and a device for power-saving operation of RFID data carriers, whereby the RFID data carrier has a transmission and reception antenna, by way of which data are sent to or received from a transmission/read unit, by means of a radio signal, within a transmission field, whereby the data carrier is configured for a power-saving sleep mode, and switches over to the reception mode by means of a wake-up signal. With the transmission of the wake-up signal, at the same time, a time datum is transmitted to the data carrier, whereby the time datum shows the time that indicates how much time must still elapse until transmission of a command. The data carrier configured with the sleep mode switches over to a reception mode by means of a wake-up signal, whereby the wake-up signal additionally has a time datum that forms a countdown time, and switches the data carrier into the reception mode briefly, after this time has elapsed, thereby causing the data carrier to receive a command.

Abstract: A method and a device for power-saving operation of a plurality of RFID data carriers, whereby the RFID data carrier has a transmission and reception antenna, by way of which data are sent to and received from a read/write unit, by means of a radio signal, and the data carrier is configured for reception of an energy-saving signal that puts the data carrier into a so-called sleep mode. The read/write unit sends a so-called conditional sleep command to all the RFID data carriers, and the RFID data carriers receiving these data in the transmission field compare the transmitted condition with a status/data detected in the RFID data carrier, whereby the condition detected in the RFID data carrier depends on a sensor input that is connected with the RFID data carrier.

Abstract: The invention relates to a method for the operation of an RFID transponder, which is characterized by the fact that the RFID transponder is operated either in broadcast mode or in bidirectional response mode or simultaneously in both aforementioned modes. The RFID transporter is equipped with a wireless transmitter as well as with a wireless transmission/reception unit for operation in these two modes, said wireless transmitter and wireless transmission/reception unit being operable independently from one another.

Abstract: The invention relates to a method for the operation of an RFID transponder, which is characterized by the fact that the RFID transponder is operated either in broadcast mode or in bidirectional response mode or simultaneously in both aforementioned modes. The RFID transporter is equipped with a wireless transmitter as well as with a wireless transmission/reception unit for operation in these two modes, said wireless transmitter and wireless transmission/reception unit being operable independently from one another.

Abstract: The invention relates to a method for carrying out a Two Way Ranging, preferably a Symmetrical Double-Sided Two Way Ranging, between a blind node whose position is unknown and to be determined and at least one reference or mobile node whose position is known in order to determine the location of the blind node, wherein the blind node and the reference or mobile node comprise wireless transceivers for transmitting and receiving radio signals. The invention is characterized in that the Symmetrical Double-Sided Two Way Ranging is initiated by the blind node.

Abstract: A method and a device for power-saving operation of RFID data carriers, whereby the RFID data carrier has a transmission and reception antenna, by way of which data are sent to or received from a transmission/read unit, by means of a radio signal, within a transmission field, whereby the data carrier is configured for a power-saving sleep mode, and switches over to the reception mode by means of a wake-up signal. With the transmission of the wake-up signal, at the same time, a time datum is transmitted to the data carrier, whereby the time datum shows the time that indicates how much time must still elapse until transmission of a command. The data carrier configured with the sleep mode switches over to a reception mode by means of a wake-up signal, whereby the wake-up signal additionally has a time datum that forms a countdown time, and switches the data carrier into the reception mode briefly, after this time has elapsed, thereby causing the data carrier to receive a command.

Abstract: A method and a device for power-saving operation of a plurality of RFID data carriers, whereby the RFID data carrier has a transmission and reception antenna, by way of which data are sent to and received from a read/write unit, by means of a radio signal, and the data carrier is configured for reception of an energy-saving signal that puts the data carrier into a so-called sleep mode. The read/write unit sends a so-called conditional sleep command to all the RFID data carriers, and the RFID data carriers receiving these data in the transmission field compare the transmitted condition with a status/data detected in the RFID data carrier, whereby the condition detected in the RFID data carrier depends on a sensor input that is connected with the RFID data carrier.

Abstract: The invention relates to a method for the operation of an RFID transponder (1, 2), wherein with the help of a marker (5-8) an inductive/magnetic near field (9-12) is generated whose field intensity is measured by the RFID transponder (1, 2) which transmits data to a reader, characterized in that at least two markers (5-8) are provided whose field intensities of the inductive/magnetic near fields (9-12) are measured by the RFID transponder (1, 2). As a result of this a good and precise localization of the transponder in the space in the case of the presence of different markers is achieved (FIG. 1).