U.S. Philips Corporation

Gm Global Technolgoy Operations, Inc.

Robert Boschgmbh

Koninklijke Philips Corporation N.V.

Bayerische Motoren Werke Aktiengesellschaft

Daimler Chrysler Ag

Motorola Corporation

Freescale Semiconductor,inc.

Nxp B.v.

Harald Eisele

Robert Mores

Florian Hartwich

Thomas M Forest

Peter Fuhrmann

Robert Hugel

Christian Ebner

Florian Bogenberger

Manfred Bruno Zinke

Christopher Temple

Bernd Elend

Martin Peller

Mathias Rausch

Josef Berwanger

Bernd Müller

Arnold W Millsap

Anton Schedl

Jörn Ungermann

Bernd Hedenetz

Ralf Belschner

Harald Weiler

Peter Lohrmann

Thomas Wuerz

Thomas Führer

Patrick Willem Heuts

Matthias Kühlewein

Hendrik Boezen

A subject matter of the application relates to a method for determining a speed of a vehicle. In one embodiment, the method includes ascertaining a first value of a distance traveled by the vehicle within a time interval on the basis of data ascertained by at least one first revolution sensor of a first tire of the vehicle and a second revolution sensor of a second tire of the vehicle; ascertaining a second value of a distance traveled by the vehicle within a time interval on the basis of data ascertained by a position-determining device; and comparing the ascertained first value and the ascertained second value. If a deviation between the ascertained first value and the ascertained second value exceeds a predetermined threshold value, the method includes classifying a speed determined on the basis of the ascertained second value.

Method for determining the speed of a vehicle and vehicle

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

In an electronic system for the transmission of data between a number of stations, sub-system operation can be achieved by a suitable choice of signal levels and wake-up levels, so that some of the stations can communicate with one another while other stations are in a sleep mode in which power is saved.

System for the transmission of data

Generally speaking, steep signal edges are required for the processing of digital signals; however, notably externally supplied signals which are conducted, for example, via long cables are liable to have comparatively flat signal edges. By selecting appropriate switching thresholds, delays between an input signal and an output signal of a circuit can be minimized. The circuit selects the first switching threshold at a low value of the input signal and switches the first threshold value to a second, higher threshold value when the input signal exceeds a further, higher threshold value. Thus, an output signal is generated comparatively quickly after the beginning of the positive-going or negative-going edge of the input signal. This can be realized by switching over the switching threshold of a comparator or by utilizing two comparators. Switching over to the various switching thresholds, or the various comparators, is provided by a further control circuit which may also be driven by the comparators themselves. A particularly high insensitivity to interference is achieved when use is made of two comparators which themselves are constructed as Schmitt triggers.

Accelerated switching by selection of various threshold levels

System for the transmission of data via a differential bus

In a transmission system a transmitter (12) is coupled to a receiver (13) via a transmission line comprising two wires (1,2). The transmitter (12) generates on said wires two voltages with respect to a reference voltage being opposite in phase. To enable the transmission system to operate in case of a short circuit between the wires (1,2), said two voltages are generated by sources having different short circuit currents.

Fault tolerant digital transmission system

A data transmission arrangement powered by at least a supply voltage source (U.sub.B), includes a transmitter (11), a receiver (13) and a data transmission path (12) operated in the differential mode and terminated by its characteristic impedance. A reliable detection is possible even upon rupture of one of the two transmission wires (18, 21) by the use of a pure resistance network including the resistors (17, 20) of the transmitter (11), of the data transmission path (12) having the resistors (22, 23) and the resistors (28, 29, 30, 31) of the receiver (13), at least each time one matching resistor (24, 26) being provided on the receiver side connected each to a transmission wire (18, 21) of the data transmission path (12) for producing opposite levels (U.sub.3, U.sub.4) in the receiver (13) and for producing an absolute level in the case of disturbance of a transmission wire (18 or 21).

Resistance coupled data transmission arrangement

Growing community of inventors

Pinneberg, Germany

Harald Eisele