Nxp B.v.

U.S. Philips Corporation

Koninklijke Philips Corporation N.v.

Bernhard Spiess

Werner Janesch

Pamir Erdeniz

Wolfgang Eber

Filippo Casamassima

Ulrich Neffe

Siegfried H Arnold

Martin Posch

Matjaz Gustin

Kuno Reis

Juergen Schroeder

Martin Apschner

Wilfried Petschenig

Josef Preishuberpflugl

Hubert Watzinger

Michael Zenz

Marcin Tomasz Bawolski

Thomas Rudolph

The disclosure relates to a range-classifying-module for a radio receiver, the range-classifying-module configured to: receive a signal representative of a chirp from a transmitter, determine the presence of one or more pulses in the received signal; and classify the receiver as either proximal to or distal from the transmitter based on: one or more characteristics of the one or more pulses; in addition to a time-of-arrival of the one or more pulses.

Ranging apparatus and method

Disclosed are: a mobile device, in particular a mobile Passive Keyless Entry, PKE, key device, and an associated method for providing 3D field values of a magnetic field H; an evaluation device for use in a PKE system having a Mobile device and an associated method for determining the direction of a magnetic field vector H=(x, y, z), which is present locally at a position of a 3D antenna of the mobile device; and a PKE system having a PKE base structure, to which preferably the mobile device is associated and which has at least a first base structure antenna, which is operable to emit the, particularly low frequency, magnetic field, the mobile PKE device and the evaluation unit. The mobile device and the associated method are characterized by providing, in addition to providing a first, second and third value v, v, and vindicative of the local X-component x, Y-component y, and Z-component x of the magnetic field vector H, a sum value vindicative of the sum |S|=|x+y+z| of the local X-, Y-, and Z-components of the magnetic field vector H. The evaluation device and the associated method are characterized by providing the vector V yielded as a vector, which has the direction of the magnetic field vector H, and may be capable to discriminate, if a one-dimensional Relay Station Attack has occurred or if a regular wireless connection has been established between the PKE base structure and the associated mobile device.

Mobile device, base structure, system and method for recovery of 3D parameters of low frequency magnetic field vectors

A secure vehicle access system comprises a vehicle and a key associated with the vehicle. The key comprises: a radio frequency, RF, key transceiver configured to: broadcast at least one signal; and listen for an acknowledgement message from the vehicle. The vehicle comprises: a radio frequency, RF, vehicle transceiver configured to: listen for the at least one broadcast signal from the key; and in response thereto, transmit an acknowledgement message back to the key to establish a communication link between the vehicle and the key. The key further comprises a ranging circuit configured to perform a distance determination between the vehicle and the key, following the establishment of the communication link, to determine whether to allow access to the vehicle.

Secure vehicle access system, key, vehicle and method therefor

A device is disclosed. The device includes a processor and a memory. The memory is coupled to the processor and having programming instructions to operate a vehicle via Near Field Communication (NFC). The device also includes a NFC controller coupled to a short range antenna, a passive NFC tag and a secure memory coupled to the NFC controller for storing a security code.

NFC based secure car key

A contactless transponder device is provided with multiple ICs. A first IC includes a first contactless transponder interface circuit configured and arranged to respond to a contactless field by providing a first identifier of the first IC. A second IC includes a second contactless transponder interface circuit configured and arranged to respond to the contactless field by providing a second identifier of the second IC. A controller is configured and arranged to inhibit the first IC from responding to the contactless field.

Coordinating multiple contactless data carriers

A measuring method for measuring physical variables comprises the selection of a working point (AP) lying within a total measurement range (G) of a physical variable (M) to measured, the detection of a measured value (M(t)) of the physical variable at a first measuring time (t), the determination of a displacement value (V(t)) as the result of a subtraction of the measures value (M(t)) measured at the first measuring time from the working point (AP), the formation of change values (C(t), C(t) . . . C(tx)) of the physical variable (M) by acquiring subsequent measured values (M(t), M(t) . . . M(tx)) of the physical variable at subsequent measuring times (t, t. . . tx) and addition of the displacement value (V(t)) to the subsequent measured values.

Tag used for monitoring the tire pressure

An electronic circuit (') for a reader device (&#x2032;) for contactless communication with a transponder () is disclosed. The electronic circuit (&#x2032;) comprises a connection () to an antenna () of said reader device (&#x2032;), which antenna () is designed for receiving a radio signal (TRS) from said transponder (). Furthermore, it comprises a receiving module (), which is connected to the antenna connection () and arranged for processing an input voltage (VI) from said antenna () representing said radio signal (TRS). To provide satisfactory operation of the receiving module () and to compensate a bad matching of the antenna circuit to the electronic circuit (&#x2032;) and/or bad environmental conditions where the reader device (&#x2032;) is operated, the electronic circuit furthermore comprises a control module (&#x2032;). Said control module (&#x2032;) is arranged to compare said input voltage (VI) to a reference value (VR) and to adjust a plant of said reader device (&#x2032;) in such a manner that the level of said input voltage (VI) stays in a predefined range. The invention furthermore relates to a reader device (&#x2032;) and a method of operating a reader device (&#x2032;).

Electronic circuit for a contactless reader device

A measuring method for measuring physical variables comprises&#x2014;the selection of a working point (AP) lying within a total measurement range (G) of a physical variable (M) to be measured,&#x2014;the detection of a measured value (M(t)) of the physical variable at a first measuring time (t),&#x2014;the determination of a displacement value (V(t)) as the result of a subtraction of the measured value (M(t)) measured at the first measuring time from the working point (AP),&#x2014;the formation of change values (C(t), C(t) . . . C(tx)) of the physical variable (M) by acquiring subsequent measured values (M(t), M(t) . . . M(tx)) of the physical variable at subsequent measuring times (t, t. . . tx) and addition of the displacement value (V(t)) to the subsequent measured values.

In a data carrier () and in an integrated circuit (), a first signal processing circuit () with a signal-independent power supply is provided for processing a signal stream (SF) in accordance with a first transmission protocol, and a second signal processing circuit () with a signal-dependent power supply is provided for processing a signal stream (SF) in accordance with a second transmission protocol, which signal stream (SF) in accordance with the second transmission protocol comprises a signal characteristic, namely a lead signal (VLS), and a detection circuit () is provided, which detection circuit is designed for detecting the lead signal (VLS) and ensuring the supplying of the second signal processing circuit () with power from a power source () provided for the second signal processing circuit () following a recognition of the occurrence of the lead signal (VLS).

Data carrier for processing signal stream according to transmission protocols has an active processing circuit and a passive signal processing circuit with power supplies

A transponder ( ) and an integrated circuit ( ) have at least one signal channel ( ), each signal channel ( ) having at least two signal processing stages ( ) and at least one signal processing stage ( ) configured such as to be activatable and deactivatable, while an associated bypass branch ( ), which is also activatable and deactivatable, is provided for each activatable and deactivatable signal processing stage ( ), and a microcomputer ( ) and a control register ( ) controllable by the microcomputer, ( ) are provided, by means of which each activatable and deactivatable signal processing stage ( ) and the associated bypass branch ( ) are activatable and deactivatable in counterphase.

Transponder with a changeable circuit configuration

A vehicle has a steering wheel for steering the vehicle. The vehicle further has a transponder communication device for contactless communication with a transponder. The transponder communication device detects first control information that is stored in the transponder, compares the first control information with second control information that is stored in the transponder communication device, and generates a vehicle control signal if the first control information corresponds to the second control information. The transponder communication device receives the first control information in a transponder signal. The vehicle has a coil responsive to said transponder signal. The steering wheel has a peripheral ring portion. The coil is included within the peripheral ring portion of the steering wheel.

Motor vehicle having a steering wheel, a transponder-communication device and a transmission coil

In an access control system (8)--which comprises a transponder communication device (9) and at least two transmission coils (11, 12) connected to the transponder communication device (9), for receiving transponder signals, of which a first transmission coil (11) is associated with a first door (2), and which comprises a first activation device (18 associated with the first transmission coil (11) and the first door (12), and which comprises a first door opener (23) for the first door (2) and a logic device (45) for activating the first door opener (23)--the two transmission coils (11, 12) have arbitrarily large receiving ranges and the first transmission coil (11) and at least one further transmission coil (12) are followed by amplitude detector (34, 36) by which the amplitudes of the transponder signals supplied by the two transmission coils (11, 12) can be detected and the logic device is arranged after the amplitude detector (34, 36) and adapted to detect a condition in which the amplitude of the transponder signal supplied by the first transmission coil (11) is greater than the amplitude supplied by the second transmission coil (12), which first door opener (23) for the first door (2) can be activated the logic device (45) only upon detection of this condition.

Access control system for controlling the access to at least one space,

A transponder communication device has an interrogation signal generator for generating an interrogation signal, a transmitter for transmitting the interrogation signal to a number of transponders, and a receiver for receiving answers signal from transponders. A transponder has an interrogation signal detector, an answer signal generator, and a state setting controller for setting a state of the transponder. The transponder communication device selects a single transponder from the number of transponders. First, the transponder communication device transmits an initial interrogation signal is transmitted to all transponders when the transponders are in an active state. In dependence of answer signals received from the transponders, the transponder communication device transmits a standby setting signal to at least one transponder at a time to instruct the transponders to adopt a standby state. In the standby state the transponders wait until a single other transponders has been selected. Thereafter all unselected transponders are selected by first setting the unselected transponders into an active state, from the standby state. Selected transponders are set into a passive state until all transponders have been selected. Thereupon, the active state is restored for all transponders.

Transponder communication device for the contactless communication with

A transmission and receiving device for contact data transmission between the device and a transponder. The transmission and receiving device has an antenna resonant circuit, a synchronous demodulator, a measuring unit, a control unit, and a reference signal generator. In operation, the device and the transponder are inductively coupled to each other through the antenna resonance circuit of the device and an antenna resonance circuit in the transponder. In response to an interrogation by the device, the transponder sends a load modulated digital signal to the device. The synchronous demodulator detects digital response data contained in the load modulated digital signal. The measuring unit measures a phase shift between a reference signal generated by the reference signal generator and a resonance signal generated in the antenna resonance circuit in the device by the sent load modulated digital signal. The control unit controls the synchronous demodulator such that the synchronous demodulator changes its demodulation mode between amplitude demodulation and phase demodulation, in dependence of the measured phase shift.

Growing community of inventors

Graz, Austria

Bernhard Spiess