Abstract: In a communication partner device (2A) which belongs to a communication system (1) having at least two such communication partner devices (2A, 2B) and which is designed for contactless communication over a first communication channel (4), wherein one of the two communication partner devices (2A, 2B) contains a communication enable information item (CEIA, CEIB) which is used to enable communication between the one communication partner device (2A) and the other communication partner device (2B) over the first communication channel (4), a communication stage (5A) is provided which is designed for contactless communication with a communication stage (5B) of the other communication partner device (2B) over a second communication channel (7) and which, in the event of communication over the second communication channel (7), is designed to make available the communication enable information item (CEIA, CEIB), necessary for communication over the first communication channel (4), in the communication partner device (

Abstract: A portable device (1) comprises a communication station configuration (10) for contactless communication with at least one external data carrier (13) and a data carrier configuration (11) for contactless communication with at least one external communication station (14), wherein a detection circuit (32) is provided which is designed to detect the presence of an external data carrier (13) and the presence of an external communication station (14) in a communication zone of the internal communication station configuration (10) and the internal data carrier configuration (11) designed for contactless communication, and wherein an activation circuit (33) cooperating with the detection circuit (32) is provided, by means of which activation circuit (33) one of the two configurations (10, 11) can be activated as a function of the detection result (INFO1, INFO2, INFO3) supplied in each case by the detection circuit (32).

Abstract: In a method of releasing communication between at least two communication devices (4, 5, 6, 7, 8), a data carrier (36), that is able to be read from in a non-contacting manner and that contains an authorization code (AUC), is brought into the vicinity of communication devices (4, 5, 8) that are to be released, and the authorization code (AUC) is read out in a non-contacting manner by a reading device (21, 22, 25) contained in the relevant communication device (4, 5, 8) and is fed by the reading device (21, 22, 25) to a releasing device (40, 41, 44) that, after analyzing the authorization code (AUC), is responsible for releasing communication between the communication devices (4, 5, 8) to be released.

Abstract: A communication station (1) is suitable for contactless communication with transponders and with other communication stations and comprises a first signal-processing circuit (28) and a second signal-processing circuit (29), the first signal-processing circuit (28) being designed for processing signals using at least one transmission parameter in a communication between the communication station (1) and at least one transponder, and the second signal-processing circuit (29) being designed for processing other signals using at least one other transmission parameter in a communication between the communication station (1) and at least one other communication station, and the transmission parameters used in the two signal-processing circuits (28, 29) differing from each other.

Abstract: A communication station (1) is suitable for contactless communication with transponders and with further communication stations and has a first protocol-executing circuit (12) and a second protocol-executing circuit (13), the first protocol-executing circuit (12) being designed to effect communication between the communication station (1) and transponders under a station/transponder protocol and the second protocol-executing circuit (13) being designed to effect communication between the communication station (1) and further communication stations under a station/station protocol.

Abstract: In a data carrier (1) that, using signals (S) occurring at transmission means (3), is arranged to make available power for supplying parts of its circuit (2) with power, data processing means (16) are provided for processing data (CD, MD, DD, RD) in at least two different modes of processing, the power made available being dependent on the mode of processing being performed at the time, and also provided are influencing means (18) that are arranged to influence the data processing means (16) in respect of the latter's mode of processing in the light of the power available.

Abstract: A data carrier (4) for the transfer of communication data (KD1, KD2) via at least two interface means (11, 12), having first interface means (11) for receiving a first communication signal (KS1), and having second interface means (12) for receiving a second communication signal (KS2), and having processing means (13) to which a first clock signal (TS1) derived from the first communication signal (KS1) or a second clock signal (TS2) derived from the second communication signal (KS2) can be applied for the processing of the transferred communication data (KD1, KD2), and having reset means (21) for resetting the processing by the processing means (13), now includes a first frequency sensor (22) which is adapted to supply first frequency reset information (RI4) to the reset means (21) when a first clock frequency of the first clock signal (TS1) or the frequency (FKS1) of the first communication signal (KS1) lies below a first lower frequency threshold (FU1), and includes a second frequency sensor (23) which is ad

Abstract: A data carrier (1) for contactless communication with a communication station (2) has an integrated circuit (7) and has a direct voltage generation circuit (20), and has detection means (28) for detecting a temperature prevailing in the data carrier (1) and in the integrated circuit (7), with the aid of which detection means (28) a representation signal (RS) representative of the prevailing temperature can be generated, which representation signal causes an initiation of a change of the temperature in the data carrier (1) and in the integrated circuit (7).

Abstract: An output stage (22; 26; 29) of a data carrier (2; 25; 28), which output stage is connected to a communication contact (9), said data carrier being adapted to provide contactless communication via an antenna stage (13) and contact-bound communication via the communication contact (9), includes a first transistor (T1; T4) having a first control terminal (G1; G4), a first input terminal (S1; D4) and a first output terminal (D1; S4), and a second transistor (T2) having a second control terminal (G2), a second input terminal (D2) and a second output terminal (S2), and a control stage (23; 31) for supplying first control information (SI1) to the first control terminal (G1), in order to drive the first transistor (T1; T4) into its conductive state, and for supplying second control information (SI2) to the second control terminal (G2), in order to drive the second transistor (T2) into its conductive state, in which stage an internal supply voltage (VINT), derived from an antenna signal (HF) by a power supply (15) of

Abstract: A data carrier (2) includes memory (16) adapted to store the information data (ID), and further includes first detection unit (28) adapted to detect first command data (CD1), and further includes initialization unit adapted to initialize, after detection of the first command data (CD1), the memory (16) for the storage of information data (ID), and further includes a second detection unit (29) adapted to detect second command data (CD2), and further includes write unit (32) adapted to write the information (ID) into the initialized memory (16) after detection of the second command data (CD2).

Abstract: In a device (1), which is preferably a test device (1), there are provided data generating means (5) for generating device identification data (DIDA) significant with regard to the device (1) itself, which device identification data (DIDA) may be fed to an integrated circuit (2) introduced into the device (1), the integrated circuit (2) comprising a memory (12), with a memory area (13) which is provided and designed to store the device identification data (DIDA)

Abstract: A data carrier (1) for contactless communication with a communication station (2) has an integrated circuit (7) and has a direct voltage generation circuit (20), and has detection means (28) for detecting a temperature prevailing in the data carrier (1) and in the integrated circuit (7), with the aid of which detection means (28) a representation signal (RS) representative of the prevailing temperature can be generated, which representation signal causes an initiation of a change of the temperature in the data carrier (1) and in the integrated circuit (7).

Abstract: A processing device (1; 14) having a housing (4) includes first communication means (2, 6) for receiving and/or transmitting an information signal (AS) and processing means (7) for processing the information signal (AS) received and/or to be transmitted, as well as second communication means (10, 11) for the contactless retrieval of control information (BI, TI) stored in a data carrier (12) which is detachably connected to the housing (4) of the processing device, which processing of the information signal (AS) by the processing device (1; 14) can be influenced with the aid of the retrieved control information (BI, TI).

Abstract: An output stage (22; 26; 29) of a data carrier (2; 25; 28), which output stage is connected to a communication contact (9), said data carrier being adapted to provide contactless communication via an antenna stage (13) and contact-bound communication via the communication contact (9), includes a first transistor (T1; T4) having a first control terminal (G1; G4), a first input terminal (S1; D4) and a first output terminal (D1; S4), and a second transistor (T2) having a second control terminal (G2), a second input terminal (D2) and a second output terminal (S2), and a control stage (23; 31) for supplying first control information (SI1) to the first control terminal (G1), in order to drive the first transistor (T1; T4) into its conductive state, and for supplying second control information (SI2) to the second control terminal (G2), in order to drive the second transistor (T2) into its conductive state, in which stage an internal supply voltage (VINT), derived from an antenna signal (HF) by power supply means (15

Abstract: A data carrier (4) for the transfer of communication data (KD1, KD2) via at least two interface means (11, 12), having first interface means (11) for receiving a first communication signal (KS1), and having second interface means (12) for receiving a second communication signal (KS2), and having processing means (13) to which a first clock signal (TS1) derived from the first communication signal (KS1) or a second clock signal (TS2) derived from the second communication signal (KS2) can be applied for the processing of the transferred communication data (KD1, KD2), and having reset means (21) for resetting the processing by the processing means (13), now includes a first frequency sensor (22) which is adapted to supply first frequency reset information (RI4) to the reset means (21) when a first clock frequency of the first clock signal (TS1) or the frequency (FKS1) of the first communication signal (KS1) lies below a first lower frequency threshold (FU1), and includes a second frequency sensor (23) which is ad

Abstract: A data carrier (2) includes memory means (16) adapted to store the information data (ID), and further includes first detection means (28) adapted to detect first command data (CD1), and further includes initialization means (33) adapted to initialize, after detection of the first command data (CD1), the memory means (16) for the storage of information data (ID), and further includes second detection means (29)adapted to detect second command data (CD2), and further includes write means (32) adapted to write the information data (ID) into the initialized memory means (16) after detection of the second command data (CD2).

Abstract: A data carrier has a chip with chip contacts, a transmission coil for contactless communication with a write/read station, a metal lead frame with a chip carrying part and contact forming parts, and a chip cover made of electrically insulating material. The transmission coil has coil contacts. The chip cover has a first cover part covering the chip at one side of the metal lead frame and a second cover part covering the other side of the metal lead frame. The second cover part has electrically conducting passages electrically connecting the coil contacts to the contact forming parts that are otherwise connected to the chip contacts. The chip carrying part and the first and second contact forming parts are electrically insulated with respect to each other and are arranged in a substantially coplanar relationship to each other.