Nxp B.v.

Koninklijke Philips Corporation N.v.

Clemens Gerhardus Johannes De Haas

Matthias Berthold Muth

Luc Van Dijk

Hendrik Boezen

Lucas Pieter Lodewijk Van Dijk

Ruurd Anne Visser

Abraham Klaas Van Den Heuvel

Gerald Kwakernaat

Aloysius Johannes Maria Boomkamp

Franciscus Johannes Klosters

Pieter Gustaaf Nierop

Gerrit Jan Bollen

Bernd Uwe Gerhard Elend

Martin Wagner

Johannes Petrus Antonius Frambach

Rolf Van De Burgt

Henk Boezen

Cecilius Gerardus Kwakernaat

Rainer Evers

Stefan Gerhard Erich Butselaar

Axel Engelhard

Thomas John William Donaldson

Rigor Hendrikus Lambertus Van Der Heijden

Peter Nierop

Frank Klosters

The present invention relates to a CAN module configured to be arranged between a CAN controller and a CAN transceiver. The CAN module received a TXD input signal from the CAN controller and is configured to transmit an TXD output signal to the CAN transceiver, wherein the TXD output signal is adapted by the CAN module to also comprising a test impulse. When monitoring the CAN BUS, the CAN transceiver will feed back an RDX signal to the CAN module and the CAN controller. The CAN module is configured to detect an error on the CAN transceiver or the CAN BUS depending on the transmitted test impulse and the test impulse received via the RDX signal. The present inventio also relates to a system comprising the CAN module and a method for the CAN module.

CAN module, CAN transceiver, CAN system and method for CAN module

An apparatus comprising an encoder is configured to:

Circuitry for encoding a bus signal and associated methods

The present invention relates to a CAN node being configured to predict, based on the at least one response message and a reference response, a fault of the CAN network and to determine a fault location of the predicted fault of the CAN network. The present disclosure also relates to a CAN system and a method for the CAN node.

Controller area network node, CAN system and method for the node

A 10BASE-T1S PHY method and apparatus are provided for receiving an analog MDI signal conveying DME-encoded data at a receiver comparator to generate a digital output signal, processing the digital output signal using a pulse encoder to generate a pulse-coded output signal with pulses generated at each rising or falling transition in the digital output signal, processing the pulse-coded output signal with an output driver to generate a pulse-coded driver output signal that is transmitted to a receiver interface pin RX, processing the pulse-coded driver output signal with an input comparator to generate a pulse-coded comparator output signal, processing the pulse-coded comparator output signal using a pulse decoder to generate a DME-encoded PMA input signal in which timing asymmetries caused by processing at the receiver comparator and/or output driver have been eliminated, and then processing DME-encoded PMA input signal at a digital PHY circuit in the Ethernet PHY.

Symmetry receiving differential manchester encoding

The disclosure relates to a controller area network, CAN, unit and associated method and computer program. The CAN unit is configured to detect a transmit signal edge on a transmit signal for a CAN transceiver; detect a corresponding receive signal edge on a receive signal for a CAN controller of the CAN transceiver; and detect a collision on the CAN bus based on a propagation delay between the transmit signal edge and the corresponding receive signal edge.

Collision detection on a can bus

The disclosure relates to a controller and a transceiver and associated software and methods. A controller for communicating with a transceiver in a network node having a first mode of operation and a second mode of operation, the controller comprising: a first-data-terminal for communicating with the transceiver; and a second-data-terminal for communicating with the transceiver, in which the controller is configured to: in the second mode, determine receive-data based on a first-data-signal at the first-data-terminal and a second-data-signal at the second-data-terminal; determine that a change of mode from the second mode to the first mode is required; and in response to determining that a change of mode from the second mode to the first mode is required, provide a controller-mode-signal that instructs the transceiver to operate in the first mode rather than the second mode, wherein the controller-mode-signal is provided by simultaneously driving a first current on the first-data-terminal and a second current on the second-data-terminal.

Controller and transceiver

A Controller Area Network (CAN) transceiver includes a receiver configured to determine a voltage differential signal from analog signalling received from a CAN bus and configured to provide a digital output signal at a receiver output to a CAN controller based on the voltage differential signal. The receiver includes arming circuitry configured to place the receiver in an armed or unarmed state based on the voltage differential signal, a first threshold corresponding to a first CAN protocol, and a second threshold corresponding to a second CAN protocol. When the receiver is in the unarmed state, a first digital signal indicative of activity on the CAN bus is provided based on a comparison between the voltage differential signal and the first threshold, and when in the armed state, the first digital signal is provided based on comparisons between the voltage differential signal and each of the first and the second thresholds.

Controller area network transceiver

A Controller Area Network (CAN) transceiver determines a voltage differential signal from analog signaling and provides a digital output signal at a receiver output to a CAN controller based on the voltage differential signal. The analog signaling received from the CAN bus can operate with a first voltage level scheme of a first CAN protocol and a second voltage level scheme for a second CAN protocol. A first comparator compares the voltage differential signal to a first threshold which is set to a value which differentiates between a logic low bit and logic high bit in accordance with the second CAN protocol. Filtering circuitry selectively filters an output of the first comparator based on detection of noise on the CAN bus to provide a first digital signal indicative of activity on the CAN bus according to the second CAN protocol.

A Controller Area Network, CAN, transceiver configured to be connected to a CAN bus comprising;

Controller area network controller and transceiver

The disclosure relates to a transceiver and associated method and computer program. The transceiver comprises a transmitter for transmitting, based on an input signal, a transmitter output voltage to a differential signaling bus, the transceiver configured to: generate, from the input signal, a copy of the transmitter output voltage to provide an expected differential bus voltage; measure a differential bus voltage from the differential signaling bus; and detect an error frame on the differential signaling bus based on a comparison between the measured differential bus voltage and the expected differential bus voltage.

Error frame detection

A differential bus network comprising: a bus comprising two bus wires; at least three nodes each comprising: a transceiver comprising: bus terminals for coupling, respectively, to the two wires of the bus; a receiver arrangement configured to receive differential signalling from the bus terminals and determine a digital receive signal based on said differential signalling; and a transmitter arrangement configured to apply differential signalling to the bus terminals based on a digital transmit signal, the transmitter arrangement comprising a first transmitter configured to increase the potential difference between the wires of the bus to a first differential voltage state and maintain the first differential state and a suppression element configured to decrease the potential difference between the two wires of the bus towards a second differential voltage state, the transmitter arrangement further comprising a resistor coupled between the bus terminals configured to at least maintain the second differential voltage state.

Differential bus network

The present application relates to a circuit and a transceiver comprising the circuit. The circuit comprises two bus line terminals for coupling to a bus and a bridge circuit comprising two legs. Each leg comprises an adjustable pull resistance and an adjustable push resistance connected in series with a respective one of the two bus line terminals. The adjustable pull resistances and the adjustable push resistances of the bridge circuit enable to independently adjust a driver impedance and to independently adjust a differential driver voltage on the bus. The circuit may further comprise an edge detector is coupled to a transmit data input and configured to detect a transition on the transmit data input and to adjust the impedances of the adjustable pull resistances and the adjustable push resistances in response to the detected transition.

Transmitter with independently adjustable voltage and impedance

The present disclosure relates to a bus device and a corresponding bus system. Furthermore, the present disclosure relates to a corresponding method of operating a bus device. In accordance with a first aspect of the present disclosure there is provided a bus device comprising a bus protocol controller with a transmit data output and a bus transceiver with a transmit data input coupled to the transmit data output of the bus protocol controller, wherein the bus protocol controller is configured to provide a serial bit stream designated for transmission through a bus via the transmit data output of the bus controller and via the transmit data input to the bus transceiver and to provide a switching signal within the serial bit stream, and wherein the bus transceiver is configured to switch between different operating modes in response to the switching signal.

Bus device and method for operating a bus device

Embodiments of a method, a device and a computer-readable storage medium are disclosed. In an embodiment, a method for operating a Controller Area Network (CAN) device involves detecting a transition of a CAN transceiver of the CAN device from a dominant state to a recessive state and in response to detecting a transition of the CAN transceiver from the dominant state to the recessive state, controlling an output impedance of the CAN transceiver to be within a predefined range of an impedance value at the dominant state while a differential driver voltage on a CAN bus connected to the CAN transceiver decreases to a predefined voltage.

Controller area network (CAN) device and method for operating a CAN device

Embodiments in accordance with present disclosure are directed to methods, devices, and apparatuses. An example embodiments include an apparatus comprising a differential data bus and a transceiver circuit. The transceiver circuit includes a differential driver and differential receiver that operate and communicate in the first communication mode and the second communication mode. The transceiver circuit is configured to switch to the second communication mode in response detecting a signal edge of a signal input received at the differential driver by at least one of: the differential driver being configured and arranged to drive a differential driver voltage on the differential data bus to a voltage that overrides a predefined voltage; and pre-conditioning the differential receiver for the transition to the second communication mode.

Growing community of inventors

Ewijk, Netherlands

Clemens Gerhardus Johannes De Haas