Koninklijke Philips Corporation N.v.

Nxp B.v.

Klaus Ully

Peter Thueringer

Peter Kompan

Wolfgang Meindl

Stefan Posch

Markus Feuser

Wolfgang Eber

Siegfried H Arnold

Peter Th&uuml;ringer

Andreas Muehlberger

Heimo Bergler

Torsten Kramer

Provided in a reception device () for receiving a transmission signal (US) in which, adhering to a communications protocol, reception data (ED) can be transmitted to the reception device () from a transmission device () are reception means () for receiving the transmission signal (US), and evaluation means () for evaluating the received transmission signal (US) and for emitting a bit sequence (BFT) received in the transmission signal (US), which bit sequence (BFT) may contain bits of reception data (ED) transmitted from the transmission device () but also bits (SB) occasioned by an interference to the transmission signal (US), and checking means () for checking whether the received bit sequence (BFT) infringes a rule of the communications protocol, wherein the reception device () is designed to continue with the reception of the transmission signal (US) and the checking of the received bit sequence (BFT) following the occurrence of an infringement of the communications protocol.

Transmission error resistant reader station

A data processing device () which includes a circuit () with data processing means () which are suitable for processing data (DA) while utilizing a characteristic value (CV) and with sequencing means () which are arranged to execute an algorithm in order to control the data processing means () in conformity with this algorithm which comprises a given number N of sub-algorithms containing identical successions of algorithm steps, is additionally provided with order fixation means () which co-operate with the sequencing means () and whereby, each time when the algorithm is executed, an order can be fixed from a plurality of feasible orders for the execution of the N sub-algorithms.

Data processing device with data processing means utilizing a characteristics value and with means for counteracting analysis methods for the detection of the characteristic value

A data carrier that communicates confidential data is configured to mask process-dependent power consumption by using power stored in an internal capacitor. The capacitor is initially charged to the voltage of an external power source, and then decoupled from the external power source. The capacitor provides power to an internal processor, and consequently discharges gradually. At the end of a given time interval, the capacitor is discharged to a fixed voltage, then charged to the supply voltage. In this manner the power consumed by charging of the capacitor is decoupled from the power consumed by the processor. If the capacitor drops below a threshold voltage before processing is completed, the processor is halted. To optimize the available processing time, the time interval before discharging the capacitor to the fixed voltage is dynamically adjusted to reduce the time that the processor is halted.

Data carrier for the adaptation of a consumption time interval to the power consumption of the data carrier

A data carrier ( ) for the transfer of communication data (KD , KD ) via at least two interface means ( ), having first interface means ( ) for receiving a first communication signal (KS ), and having second interface means ( ) for receiving a second communication signal (KS ), and having processing means ( ) to which a first clock signal (TS ) derived from the first communication signal (KS ) or a second clock signal (TS ) derived from the second communication signal (KS ) can be applied for the processing of the transferred communication data (KD , KD ), and having reset means ( ) for resetting the processing by the processing means ( ), now includes a first frequency sensor ( ) which is adapted to supply first frequency reset information (RI ) to the reset means ( ) when a first clock frequency of the first clock signal (TS ) or the frequency (FKS ) of the first communication signal (KS ) lies below a first lower frequency threshold (FU ), and includes a second frequency sensor ( ) which is adapted to supply second frequency reset information (RI ) to the reset means ( ) when a second clock frequency of the second clock signal (TS ) or the frequency (FKS ) of the second communication signal (KS ) lies below a second lower frequency threshold (FU ), the reset means ( ) being adapted to reset the processing by the processing means ( ) when the first clock signal (TS ) is applied to the processing means ( ) and the first frequency reset information (RI ) is received or when the second clock signal (TS ) is applied to the processing means ( ) and the second frequency reset information (RI ) is received.

Frequency sensor for each interface of a data carrier

A data carrier ( ) includes a chip ( ) having a supply voltage circuit point ( ), from which a supply voltage (V) can be taken, and having at least one supply voltage output ( ) for supplying a supply voltage (V , V ), and having potential control means ( ) to which a control signal (S) can be applied and with the aid of which the supply voltage output ( ) can be set to different potential values in accordance with the control signal (S), and also includes at least one component ( ) which is spatially separated from the chip ( ), which component ( ) has a supply voltage input ( ) is connected to the supply voltage output ( ) of the chip ( ) via a connection lead ( ).

Data carrier having a chip including means for the controllable voltage supply to a further component of the data carrier

A data carrier ( ) for the contactless communication of communication information (KD) with a transmitting/receiving station ( ) includes receiving circuit ( ) for receiving an HF signal (HF) containing the communication information (KD) from the transmitting/receiving station ( ), and processing circuit ( ) for processing the received communication information (KD), and supply voltage generating circuit ( ) for rectifying the received HF signal (HF) and for energizing the processing circuit ( ) with a supply voltage (UV), and reset circuit ( ) for resetting, when the supply voltage (UV) decreases below a reset voltage value (UR), the processing performed by the processing circuit ( ), the reset circuit ( ) now being adapted to interrupt the processing of the communication information (KD) by the processing circuit ( ) at least partially when the supply voltage (UV) decreases below an interruption voltage value (UU), the interruption voltage value (UU) being greater than the reset voltage value (UR).

Data carrier having reset means for interrupting the processing

An output stage ( ) of a data carrier ( ), which output stage is connected to a communication contact ( ), said data carrier being adapted to provide contactless communication via an antenna stage ( ) and contact-bound communication via the communication contact ( ), includes a first transistor (T ; T ) having a first control terminal (G ; G ), a first input terminal (S ; D ) and a first output terminal (D ; S ), and a second transistor (T ) having a second control terminal (G ), a second input terminal (D ) and a second output terminal (S ), and a control stage ( ) for supplying first control information (SI ) to the first control terminal (G ), in order to drive the first transistor (T T ) into its conductive state, and for supplying second control information (SI ) to the second control terminal (G ), in order to drive the second transistor (T ) into its conductive state, in which stage an internal supply voltage (VINT), derived from an antenna signal (HF) by a power supply ( ) of the data carrier ( ) during contactless communication, can be supplied to the first input terminal (S ) and a reference potential (GND) can be supplied to the second output terminal (S ), and in which the second input terminal (D ) is connected to the communication contact ( ) of the data carrier ( ). The output stage ( ) now includes inhibit means (R; D; T ), which are adapted to prevent an analysis current (IA) having an analysis current strength from being fed from the communication contact ( ) into the data carrier ( ) via the first transistor (T T ), the analysis current (IA) having the analysis current strength being suited for the analysis of the power consumption of the data carrier ( ) and for hacking communication data (VKD) processed in the data carrier ( ).

Output stage for a communication contact for a data carrier

A data carrier is disclosed for the communication of transmission information to a communication station. In particular, the data carrier includes a program memory for storing a program code including instruction and address information in at least one program code line, a data memory for storing data information, and a processor for processing the communicated transmission information, wherein each program code line address mode information included in the instruction information and the associated address information can be determined/processed to access a memory location of the program or data memory, and includes an address mode extension device, which in the presence of specific address information, determines stored additional address mode information.

Data carrier having address mode or command extension capability

In order to prevent the retrieval of data via the measurement of the power consumption in a data carrier provided with a data processing device, it is proposed to connect a load circuit to the power supply of the data carrier so as to influence the power consumption of the data carrier at least during security-relevant operations of the data processing device.

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Graz, Austria

Klaus Ully