Robert Boschgmbh

Andreas Weigl

Robert Hugel

Florian Hartwich

Bernd Mueller

Clemens Schroff

Bernd Weyerstall

Peter Baeuerle

Piotr Szablewski

Erich Zabler

Udo Diehl

Thomas Fuehrer

Bernd Müller

Bernd Diebold

Ferdinand Grob

Josef Wahl

Rolf Kohler

Stephan Schmitz

Hardy Haas

Karl-Ernst Weiss

Thomas Riehemann

Peter Hauler

Peter-Jurgen Schmidt

Frieder Heintz

Ulrich Koelle

Harald Bochmann

Helmut Randoll

Dieter Schramm

Wolfgang Bremer

Bernd Herrmann

Karl-Heinz Kaiser

Gunther Baumann

Tobias Klaiber

Jorg Birmelin

Uwe Feuchter

Viktor Kopernick

Christoph Keutmann

A method and a device for exchanging data in messages between at least two stations connected by a bus system. The messages contain the data being transmitted by the stations over the bus system. Each message contains an identifier characterizing the data contained therein. Each station decides on the basis of the identifier whether to receive the message. The messages are controlled in time by a first station. The first station repeatedly transmits a reference message over the bus in at least one specifiable time interval. The time interval is subdivided into time windows of a specifiable length, the messages being transmitted in the time windows.

Method and device for exchanging data between at least two stations connected to a bus system

A method for exchanging data in messages between at least two users connected by a bus system, where each of the at least two users includes a predefinable and/or ascertainable timing mark, includes causing the at least two users to transmit, via the bus system, messages including the data. The method also includes causing a first user, in a function as timer, to control the messages as a function of time in such a way that it repeatedly transmits a reference message, which contains time information of the first user, via the bus at a specifiable time interval. Further, if the timing mark of the second user is reached without a reference message of the first user reaching the second user, the second user is caused to take over the function of timer by transmitting its own reference message with its own time information via the bus system.

Method and device for the exchange of data between at least two users connected to a bus system

A method for exchanging data in messages between at least two stations connected via a bus system. The messages contain the data being transmitted by the stations over the bus system, and the messages are controlled over time by a first station in such a manner that the first station repeatedly transmits a reference message containing time information of the first station over the bus system at least one specifiable time interval. The time interval is subdivided as a basic cycle into time windows of specifiable length, and the messages are transmitted in the time windows. When data is exchanged, a pause period of variable duration is provided at the end of at least one basic cycle, by which a time change of the beginning of the basic cycle is corrected by adaptation of the duration of the pause period.

Method, device and system for exchanging data via a bus system

Method and device for exchanging data between at least two users that are connected to a bus system

A method and a device for exchanging data in messages between at least two stations connected via a bus system, the messages containing the data being transmitted by the stations over the bus system and the messages being controlled over time by a first station in such a manner that the first station repeatedly transmits a reference message over the bus at least one specifiable time interval and the time interval is divided into time windows of specifiable length, the messages being transmitted in the time windows, a reference message and the subsequent time windows until the next reference message being combined into a first cycle, and the first station interrupting the transmission at the end of a first cycle due to a stop request, in particular, a message of the at least second station.

Method and device for exchanging data between at least two stations connected via a bus system

A method and a device for exchanging data in messages between at least two stations connected via a bus system, the messages containing the data being transmitted by the stations over the bus system and the messages being controlled over time by a first station in such a manner that the first station repeatedly transmits a reference message over the bus at at least one specifiable time interval and the time interval is divided into time windows of specifiable length, the messages being transmitted in the time windows, a reference message and the subsequent time windows until the next reference message being combined into a first cycle, and the first station interrupting the transmission at the end of a first cycle due to a stop request, in particular, a message of the at least second station.

A method for the exchange of data in messages between at least two users which are connected by a bus system, the messages containing the data being transmitted by the users via the bus system, and each user containing a predefinable and/or ascertainable timing mark; a first user, in a function as timer, controls the messages as a function of time in such a way that it repeatedly transmits a reference message, which contains time information of the first user, via the bus at a specifiable time interval, and if the timing mark of the second user is reached without a reference message of the first user reaching the second user, the at least second user takes over the function of timer by transmitting its own reference message with its own time information via the bus system.

A method and device for the exchange of data in messages between at least two users which are connected by a bus system and have separate time bases, the messages containing the data being transmitted by the users via the bus system; and a first user, in a function as timer, controls the messages as a function of time in such a way that it repeatedly transmits a reference message, which contains time information regarding the time base of the first user, via the bus at a specifiable time interval; the at least second user forms its own time information, using its time base, as a function of the time information of the first user; a correction value is ascertained from the two pieces of time information; and the second user adapts its time information and/or its time base as a function of the correction value.

Data exchange between users connected by a bus system and having separate time bases

An access- and starting/driving-authorization system for a motor vehicle, having a portable transponder and a control unit accomodated in the motor vehicle, in order to control the smart master-key system and the engine control unit. In inquiry/response dialogs, the transponder and the control unit enabling or blocking access to the motor vehicle, and the starting and driving of the motor vehicle, using sets of code information that are matched to each other. Starting and driving the motor vehicle after forcibly entering the motor vehicle and replacing the engine control unit, including a vehicle immobilizer and a transponder of the control units relevant for starting and driving, is prevented in that the enabling of the motor-vehicle to be started and driven, after a successful starting/driving-authorization inquiry/response dialog, is rendered dependent on a preceding, successful access-authorization inquiry/response dialog.

Access and start/drive authorization system

An authorization checking system for motor vehicles, in which a control unit in the motor vehicle, having a portable user-transponder, in an inquiry-response dialog using data exchange, checks, and allows or blocks, the authorization for unlocking or locking the vehicle doors as well as for starting or driving. In order to be able to modify the identifiers of user-transponders and components of the motor vehicle in a security-relevant manner, a so-called master-transponder is provided in addition to one or a plurality of user-transponders. The master-transponder has a particular, vehicle-specific identifier, using which, in a special-inquiry-response dialog, the authorization to carry out and complete special functions within a preselected scope, going beyond the access and start/drive authorization, can be checked, and allowed or blocked. For carrying out the special functions, the master-transponder has acoustical and/or optical display devices and/or input devices.

Authorization verification system for vehicles

A vehicle security arrangement includes at least one functional control unit, which provides a first code word; a theft protection control unit, which is coupled via a bus to the at least one functional control unit; and at least one input unit, which transmits to the theft protection control unit a second code word which the theft protection control unit forwards to the at least one function control unit. The theft protection control unit may initiate the provision of the first code word and the second code word. In the at least one functional control unit, a comparison of the first code word of the at least one functional control unit with the second code word takes place. In case of agreement between the first code word and the second code word, the at least one functional control unit enables itself.

Vehicle security device

The invention relates to a structural theft protection system for motor vehicles with a blocking control device ( ) for releasing a motor control device ( ), a code acquisition device ( ) that is connected to the blocking control device, and a device ( ) connected to the blocking control device ( ) for acquiring a vehicle use parameter (T, S), as well as with several locally fixed code takeover/output stations ( ), wherein the blocking control device ( ) keeps the motor control device ( ) in the release position only if the blocking control device ( ) is fed a new release information by one of the locally fixed code takeover/output stations ( ), preferably at regular intervals.

Structural theft protection for motor vehicles

A method for preventing misuse of a transponder left inside a vehicle, which is part of a keyless vehicle access system and coacts with a control system for access and driving authorization located in the vehicle. The control system emits, in response to a locking command, a check signal by way of which it is ascertained whether transponders are still located in the vehicle interior after locking. Transponders which are detected as being located in the vehicle interior after locking are recorded in a memory associated with the control system. Upon a subsequent legitimate access to the vehicle, transponders that are not again detected in the interior are inhibited.

Method for preventing misuse of transponders left inside a vehicle

To provide a suitable number of display fields (e.g. ARRIVAL; TIME; etc.), each of which characterizes and identifies the significance or import or meaning of a displayed numerical value on a display device (16), the display fields are associated in groups or sets (11-15; 42-45) having a particular geometric position (columns; segmental), and a plurality of keys (21-25) are provided with each key being associated with a group or set of the display fields, and connected to a counter (61) to select a particular one of the display fields within the group or set by the number of key operations, the numerical value associated with the display field then being displayed on the numerical display (16). The display and keys are connected to a computer (62) which provides the output data for the numerical indicator (16); an input/output control switch (26) is provided to change the function of the display group selection keys (21-25) to permit data entry into the computer (62), for example of speed limit, driving distance, and the like.

Growing community of inventors

Linkenheim-Hochstetten, Germany

Andreas Weigl