Nxp B.v.

Gm Global Technolgoy Operations, Inc.

Robert Boschgmbh

Bayerische Motoren Werke Aktiengesellschaft

Daimler Chrysler Ag

Koninklijke Philips Corporation N.v.

Motorola Corporation

Freescale Semiconductor,inc.

Jörn Ungermann

Peter Fuhrmann

Manfred Bruno Zinke

Florian Hartwich

Thomas M Forest

Robert Hugel

Christian Ebner

Florian Bogenberger

Christopher Temple

Bernd Elend

Martin Peller

Mathias Rausch

Josef Berwanger

Bernd Müller

Arnold W Millsap

Harald Eisele

Anton Schedl

Bernd Hedenetz

Ralf Belschner

Harald Weiler

Peter Lohrmann

Thomas Wuerz

Thomas Führer

Patrick Willem Heuts

Matthias Kühlewein

Klaus Peter May

Receiver for receiving a data stream via a data bus, which receiver samples the bits of the data stream in an over-sampling process, in which n bit strobe offsets are used and n data sets with i bits are sampled,&#x2014;applies a decision criterion for identifying those data sets with correct bit values. This decision uses checksum CRC,&#x2014;selects one of the identified data sets with correct bit values and&#x2014;uses the bit strobe offset, which was used for receiving the selected data streams, for receiving the data stream. In this way the multiphase clock with optimal phase shifts is selected.

Receiver with adaptive strobe offset adjustment

A time-triggered communication system in a dual-channel network of singlechannel architecture, wherein in each case one communication controller () is assigned to one channel, and two corresponding communication controllers () communicate with one another via an inter-channel interface (). Said inter-channel communication contains information about limiting points (GG. . . G) of a time path. A limiting point (GG. . . G) is, for example, the point in time when a cycle starts. The interchange of limiting points enables the temporal offset of the two channels to be determined as well as a correction value. After every two cycles also the rate error of the local clocks can be ascertained and a suitable correction value determined. The reliability of safety-relevant networks is increased by the time-triggered communication system described hereinabove.

Time-triggered communication system and method for the synchronization of a dual-channel network

The invention refers to a method for monitoring a communication media access schedule of a communication controller () of a communication system () by means of a bus guardian (). The communication system () comprises a communication media () and nodes () connected to the communication media (). Each node () comprises a communication controller () and a bus guardian () assigned to the communication controller (). Messages are transmitted among the nodes () across the communication media () based on a cyclic time triggered communication media access scheme. In order to provide a mechanism which allows the bus guardian () to monitor the communication media access scheme of the communication controller () even during startup of the communication it is suggested, that the bus guardian () has a priori knowledge about possible deviations from the communication media access schedule during startup of the communication and that the bus guardian () during startup makes use of the a priori knowledge to distinguish between an allowed deviation and a forbidden deviation caused by a failure of the communication controller ().

Method for monitoring a communication media access schedule of a communication controller of a communication system

A dual-channel network with in each case one communication controller () for each of the two channels (A, B). In order to ensure that the two channels (A, B) operate on a temporally matched basis, an exchange of current states ('ready, 'abort') takes place via an external or an on-chip interface (). The cold start operation is carried out only if, and so long as, both communication controllers are in the &#x201c;ready' state.

Time-triggered communication system and method for the synchronized start of a dual-channel network

A method and a bit stream decoding unit for bit stream decoding has a bit stream comprising a number of consecutive samples. In order to provide for rapid and, in particular, reliable decoding of the bit stream, a detection window comprising a number of samples is defined and the detection window is positioned at certain positions on the bit stream in order to comprise certain samples with respective sample values. A majority voting is applied to the sample values in the detection window and, in dependence on the result of the majority voting, the bit stream is decoded and respective bit values are generated.

Method and bit stream decoding unit using majority voting

In order to carry out in a communication system () a temporal synchronization of clocks in a particularly rapid and efficient manner, a method is proposed which has the following steps: acquiring state values which are dependent on a time base (); filing each acquired state value at a position in a first list L comprising (k+1) positions, if the acquired state value is smaller than or equal to the (k+1) smallest element of the list L, where k is a predefinable error tolerance; filing the acquired state value at a position in a second list H comprising (k+1) positions, if the acquired state value is greater than or equal to the (k+1) greatest element of the list H; forming a mean value from the (k+1) smallest element of the list L and the (k+1) greatest element of the list H, if the number of acquired state values is greater than or equal to (2+2); determining a correction value as a function of the mean value; and correcting a current state value of the clocks that are to be synchronized.

Method for temporal synchronization of clocks

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Aachen, Germany

Jörn Ungermann