Abstract: A radio frequency interface circuit (11) for a radio frequency identification tag comprising—at least two input terminals (RF+, RF?) for connecting the circuit (10) with an antenna structure of the radio frequency identification tag, —one or more variable resistive loads (14) coupled across pairs of the input terminals (RF+, RF?)—one or more rectifiers (15) each connected on its input side to a pair of input terminals (RF+, RF?) and on its output side to a parallel connection of voltage control means (16) and modulation control means (17), wherein combiner means (18) are provided which are adapted to receive an output signal (19, 20) from the voltage control means (16) and the modulation control means (17), respectively, and to generate a control signal (21) for controlling each variable resistive load (14) depending on the received signals (19, 20) in such a way that each variable resistive load (14) serves as a modulation and voltage regulation circuit, and wherein each variable resistive load is adapted to

Abstract: In a receiving method for the contactless reception of identification information (I1,12), which is stored in a data carrier (3, 3?) and which can be received from the data carrier (3, 3) in a contactless manner in the form of information units (IU, IU?) with a communication device (2), it is envisaged that firstly an information unit (R.IU) is received and that secondly it is detected that the received information unit (R.IU) represents a collision of two different information units (IU, IU?) occurring essentially simultaneously, of which two different information units (IU, IU?) the one information unit (IU) originates from a first data carrier (3) and the other information unit (IU?) originates from a second data carrier (3?), and that thirdly a received information unit (R.IU) that represents a collision is replaced with a first replacement information unit (R.IU1) established by the communication device (2), which is used instead of the information unit (R.

Abstract: Circuit for a data carrier, which circuit is capable of supplying identification information to a communications arrangement.

Abstract: In a method for the determination of disconnection time information (DTI) significant for an inadequate power supply of an integrated circuit (2) of a data carrier (1) such as an RFID-tag. The disconnection time information (DTI) is determined on the basis of the discharge behavior of a first storage capacitor (C1), which is affected by the IC material and by radiation, and the determined disconnection time information (DTI) is corrected in dependence on the effects of the IC material and/or on at least one radiation effect.

Abstract: An exemplary embodiment of the invention provides a charge pump stage (100) that comprises a first input node (101), a second input node (107), a decoupling capacity (109) having a first terminal (108) and a second terminal (110). Further, the charge pump stage (100) comprises a pump control circuit having a first contact node (102) and a second contact node (111), wherein the first input node (101) is coupled to the first contact node (102). Furthermore, the second input node (107) is coupled to the first terminal (108) of the decoupling capacity (109), and the second terminal (110) of the decoupling capacity (109) is coupled to the second contact node (111) and further coupled to ground (112).

Abstract: A device (1) for processing a signal (S) has firstly an antenna configuration (5) that is arranged to transmit a signal (S), that has at least one antenna-configuration terminal (6, 7) intended for connecting the antenna configuration (5) to a circuit (2), and that has an antenna-configuration impedance (ZA) at the antenna-configuration terminal (6, 7), and the circuit (2) further has at least one circuit terminal (3, 4) at which the circuit (2) has a circuit impedance (ZS) and at which the circuit (2) is connected to the antenna-configuration terminal (6, 7) for the purpose of power transmission between the antenna configuration (5) and the circuit (2) by using the signal (S), at least one of the two impedances (ZA, ZS) having, in respect of its reactance (YA, YS), a difference in reactance value (?Y) from a nominal reactance value (YNOM) that is adapted for the transmission of power between the antenna configuration (5) and the circuit (2), and one of the two impedances (ZA, ZS) having a resistance (XA, XS)

Abstract: A circuit (12) comprises a first circuit point (13) and a second circuit point (14), which first circuit point (13) and second circuit point (14) are designed to be connected with RF transmission means (11) being designed for receiving in a contact-less manner a carrier signal (CS) from a read/write station and for feeding the circuit (12) with the received carrier signal (CS). The circuit (12) further comprises circuit testing means (4) being designed to carry out functional tests of the circuit (12) and to output a modulated response signal (TS-MOD) via the first and second circuit points (13, 14) only if the functional tests have been successful.

Abstract: In the case of a data carrier (1) or an integrated circuit (5) for the data carrier (1), an ESD protection circuit (8) is formed by means of a series connection (9) comprising a first protection diode (10) and a protection stage (11) together with a second protection diode connected in parallel with the series connection (9), and a rectifier circuit (13) connected with the ESD protection circuit (8) is provided, which comprises a rectifier diode connected in parallel with the ESD protection circuit (8), wherein the rectifier diode takes the form of a Schottky diode (21) with a parasitic p/n junction (26) and wherein the Schottky diode (21) with the parasitic p/n junction (26) forms the second protection diode of the ESD protection circuit (8).

Abstract: A circuit for a contact-free data carrier comprises a first circuit point and a second circuit point for connection to transmission means of the data carrier; and supply voltage generating means, which are connected to the first connection circuit point and comprise a supply voltage circuit point and a reference potential circuit point and are designed to generate, based on the received carrier signal, a first supply voltage that can be tapped at the supply voltage circuit point against the reference potential circuit point; and direct current decoupling means, which are connected between the second circuit point and the reference potential circuit point and are designed to inhibit a direct current flow between the second circuit point and the reference potential circuit point; and current conducting means that are connected between the second circuit point and the reference potential circuit point, wherein the current conducting means are designed for the unidirectional conduction of current from the referen

Abstract: An electric counter circuit (30, 40, 80) comprises a clock generator (1, 54, 111, 120, 130) for generating a plurality of clock signals (21-24, 121-125, 131-134) and a sampling device (32, 81) for sampling the clock signals (21-24, 121-125, 131-134) at a first moment in time when a first characteristic signal section (LE) of a digital signal (DS) appears. Furthermore, the circuit (30, 40, 80) comprises a calculation device (33) for calculating the time between the first moment and a second moment which is later than the first moment. This calculation is based on the clock signals (21-24, 121-125, 131-134) at the first moment and based on the clock signals (21-24, 121-125, 131-134) at the second moment. The clock signals (21-24, 121-125, 131-134) each have the same cycle duration (T) and are phase-shifted with respect to each other.

Abstract: A radio frequency interface circuit (11) for a radio frequency identification tag comprising—at least two input terminals (RF+, RF?) for connecting the circuit (10) with an antenna structure of the radio frequency identification tag, —one or more variable resistive loads (14) coupled across pairs of the input terminals (RF+, RF?)—one or more rectifiers (15) each connected on its input side to a pair of input terminals (RF+, RF?) and on its output side to a parallel connection of voltage control means (16) and modulation control means (17), wherein combiner means (18) are provided which are adapted to receive an output signal (19, 20) from the voltage control means (16) and the modulation control means (17), respectively, and to generate a control signal (21) for controlling each variable resistive load (14) depending on the received signals (19, 20) in such a way that each variable resistive load (14) serves as a modulation and voltage regulation circuit, and wherein each variable resistive load is adapted to

Abstract: An electric circuit (30) for generating a clock-sampling signal (CLK) for a sampling device (31) comprises a clock generator (1, 40, 50, 60) for generating a plurality of clock signals (21-24, 51-54, 61-64), a correlation device (L) for correlating a characteristic signal section (LE) of a digital signal (DS) with the plurality of clock signals (21, 22, 23, 24, 51-56, 61-64), and a selecting device (MX) for selecting one of the clock signals (21, 22, 23, 24, 51-55, 61-64) as the clock-sampling signal (CLK) for the sampling device (31) on the basis of the correlation by the correlation device (L). The clock signals (21-24, 51-54, 61-64) have the same cycle duration (T) and are phase-shifted with respect to each other. The sampling device (31) subsequently samples the digital signal (DS) with the clock-sampling signal (CLK).

Abstract: In a receiving method for the contactless reception of identification information (11,12), which is stored in a data carrier (3,3?) and which can be received from the data carrier (3, 3) in a contactless manner in the form of information units (IU, IU?) with a communication device (2), it is envisaged that firstly an information unit (R.IU) is received and that secondly it is detected that the received information unit (R.IU) represents a collision of two different information units (IU, IU?) occurring essentially simultaneously, of which two different information units (IU, IU?) the one information unit (IU) originates from a first data carrier (3) and the other information unit (IU) originates from a second data carrier (3), and that thirdly a received information unit (R.IU) that represents a collision is replaced with a first replacement information unit (R.IU1) established by the communication device (2), which is used instead of the information unit (R.

Abstract: In a method for the determination of disconnection time information (DTI) significant for an inadequate power supply of an integrated circuit (2) of a data carrier (1) such as an RFID-tag. The disconnection time information (DTI) is determined on the basis of the discharge behavior of a first storage capacitor (C1), which is affected by the IC material and by radiation, and the determined disconnection time information (DTI) is corrected in dependence on the effects of the IC material and/or on at least one radiation effect.

Abstract: An RFID system comprises at least one reading device (1) and at least one transponder (2, 2?, 2?, 2??), which are configured for non-contact communication by means of modulated electromagnetic signals (SS), which contain data and/or commands packed in data frames, in which the reading device (1) is configured for transmitting a group of data frames (D-SYNC), which contain synchronization information (Preamble, Start Delimiter) for synchronization with the transponder (2, 2?, 2?, 2??) and to transmit another group of data frames (D-NOSYNC) which do not contain such synchronization information, in which the transponder (2, 2?, 2?, 2??) has synchronization means (14, 20, 21) which are configured to effect synchronization with the reading device (1) with the help of synchronization information (Preamble, Start Delimiter) contained in received data frames (D-SYNC) and synchronization status test means (15,15?,15?,22) configured for detecting whether the transponder runs synchronously with the reading device and in

Abstract: Circuit for a data carrier, which circuit is capable of supplying identification information to a communications arrangement.

Abstract: A device (1) for processing a signal (S) has firstly an antenna configuration (5) that is arranged to transmit a signal (S), that has at least one antenna-configuration terminal (6, 7) intended for connecting the antenna configuration (5) to a circuit (2), and that has an antenna-configuration impedance (ZA) at the antenna-configuration terminal (6, 7), and the circuit (2) further has at least one circuit terminal (3, 4) at which the circuit (2) has a circuit impedance (ZS) and at which the circuit (2) is connected to the antenna-configuration terminal (6, 7) for the purpose of power transmission between the antenna configuration (5) and the circuit (2) by using the signal (S), at least one of the two impedances (ZA, ZS) having, in respect of its reactance (YA, YS), a difference in reactance value (?Y) from a nominal reactance value (YNOM) that is adapted for the transmission of power between the antenna configuration (5) and the circuit (2), and one of the two impedances (ZA, ZS) having a resistance (XA, XS)

Abstract: In the case of a data carrier (1) or an integrated circuit (5) for the data carrier (1), an ESD protection circuit (8) is formed by means of a series connection (9) comprising a first protection diode (10) and a protection stage (11) together with a second protection diode connected in parallel with the series connection (9), and a rectifier circuit (13) connected with the ESD protection circuit (8) is provided, which comprises a rectifier diode connected in parallel with the ESD protection circuit (8), wherein the rectifier diode takes the form of a Schottky diode (21) with a parasitic p/n junction (26) and wherein the Schottky diode (21) with the parasitic p/n junction (26) forms the second protection diode of the ESD protection circuit (8).