Gm Global Technolgoy Operations, Inc.

Robert Boschgmbh

Bayerische Motoren Werke Aktiengesellschaft

Freescale Semiconductor,inc.

Daimler Chrysler Ag

Koninklijke Philips Corporation N.V.

Motorola Corporation

Nxp B.v.

Thomas Wuerz

Florian Bogenberger

Christopher Temple

Mathias Rausch

Florian Hartwich

Thomas M Forest

Peter Fuhrmann

Robert Hugel

Christian Ebner

Manfred Bruno Zinke

Bernd Elend

Martin Peller

Josef Berwanger

Bernd Müller

Arnold W Millsap

Harald Eisele

Anton Schedl

Jörn Ungermann

Bernd Hedenetz

Ralf Belschner

Harald Weiler

Peter Lohrmann

Patrick Willem Heuts

Thomas Führer

Matthias Kühlewein

Manfred P Thanner

Gregor Pokorny

Leonard Link

A multi-node communications system is provided with communications protocol using both static () (pre-determined) and dynamic (. . . ) (run-time determined) consecutive communication slots is used. The system has a number of distributed communication nodes, each node being arranged for communicating frames of data with the other nodes during both the static (. . . ) and the dynamic (. . . ) communication slots. Each node includes a synchronized time basemade up of consecutive timeslots (. . . ). The timebasehas substantially the same error tolerance in each node. For static communication (), a predetermined number of timeslots () are utilized for each static communication slot. For dynamic communication a dynamically allocated number of timeslots () are utilized for each dynamic communication slot. In this way both static and dynamic media arbitration is provided within a periodically recurring communication pattern. Communication jitter is well defined and dealt with, and large oscillator drifts are compensated for.

System node and method for providing media arbitration

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 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

Growing community of inventors

Poing, Germany

Thomas Wuerz