Disclosed is a method and apparatus in which one or more data streams are sent to a computer and the data streams are sorted using a rule base into streams representative of events. The incoming data streams can be sent by hunter agents which search for specified types of data and forward the data to the computer. The incoming data stream can also be sent by a gatherer agent. The incoming data stream can also be incoming message traffic such as e-mail and other types of message traffic data. The...

A system for monitoring a vehicle experiencing a crisis situation, such as carjacking. Each vehicle to be monitored includes an on-board reporting apparatus. The reporting apparatus are operative during occurrence of the crisis situation to automatically initiate communication with a remote monitoring facility via a cellular telephone network. Selected status information will then be provided to the remote monitoring facility to permit real time tracking of the vehicle. As a result, law enforcem...

In a digital transmission system wherein a plurality of transmission control units each of which has received data error detecting means, data storing means, receiving means and transmitting means are successively connected by a transmission medium, the transmission control unit is operated in a through mode in which received data is directely forwarded under a normal state, and when an error has been detected in received data, the operation mode of the transmission control unit is switched to a...

A method for obtaining data on the traffic situation in a road network, wherein a plurality of vehicles involved in road traffic ("floating cars") and equipped with sensory analysis equipment for collecting traffic-relevant sensor data, which include at least one variable representing the current speed v(t) of a given vehicle, wirelessly transmit to a center at chronological intervals individual reports concerning the current traffic situation in the vicinity of the given vehicle determined on t...

The invention relates to a method for monitoring the load situation in a service database system. The system generates a list which includes a desired number of measurement objects which are largest in respect to counter values. In order to obtain measurement data more efficiently in real-time, (a) the recording and zeroing of counter values is performed during each recording interval one measurement object at a time, (b) list is generated by the recording interval so that it is checked within a...

A method and a device for vehicle guidance as a function of the traffic situation is provided, during which vehicle guidance the traffic situation data are evaluated in a control center which has a computer. The control center computer determines the optimum route as a function of starting data, the traffic situation data and stored road network data in the form of sequences of intermediate destinations such that a vehicle-end navigation device is capable of reproducing successive sections of th...

A downhill coasting situation detecting device for an automotive vehicle comprises a sensor for detecting an opening degree of a throttle valve for an engine of the automotive vehicle, a first derivative calculating device for calculating a first derivative of the vehicle speed, a second derivative calculating device for calculating a second derivative of the vehicle speed, and a downhill coasting situation determining device for determining that the automotive vehicle being in a downhill coasti...

A method and a device for extensive traffic situation monitoring of a road network on which vehicles can travel is provided. Remote photographs are taken by aircraft of the area to be monitored, and the images thus taken are subjected to an image-processing process to localize the roads in the road network and to recognize vehicles on them. On the basis of the detected vehicles, conclusions are then drawn about the traffic situation. A device for performing this method incorporates an evaluation...

A process for detecting and reporting traffic situation data of a road system via a respective sample vehicle is provided, in which case an automatic position determination is carried out in the respective sample vehicle at definable points in time and, as a function thereof, pertaining traffic situation data are detected and reported. The road system, together with drive duration data concerning the drive duration to be expected for partial routes of the road system, is stored in the sample veh...

A network (10) is provided that has a network server (12) and a plurality of client systems (14). The network server (12) executes a server application (16), and the plurality of client systems (14) each execute a client application (20). The client applications (20) create and display situation board windows (22) on each client system (14) and allow users of each client system (14) to view information and submit information for the situation board windows (22). The server application (16) recei...