Giesecke & Devrient Gmbh

Magna Powertrain Bad Homburg Gmbh

Giesecke+devrient Mobile Security Gmbh

Ludger Holtmann

Jorn Treger

Van Doan Nguyen

Kerstin Rosenkranz

Thilo Mauser

Jörn Treger

Matthias Jauering

Dorothee Hilmer

Ingeborg Fladee

Matthias Jauernig

Sara Stamer

A hydraulic transmission control system including a vane pump including a stroke ring defining a compartment. An outlet line and an inlet line are fluidly connected to the compartment. A control pressure chamber and a compensation chamber are defined adjacent to opposite sides of the stroke ring, each for varying a pump outlet pressure based on a pressure change within the chambers. A pump controller is connected to the outlet line and the pressure control chamber for adjusting a pressure in the pressure control chamber. The outlet line is further connected to the compensation chamber, a primary hydraulic circuit and a primary pressure control valve. A secondary hydraulic circuit is connected to the primary pressure control valve. A shift valve is disposed between the outlet line and the primary control valve and configured to selectively connect the pump controller and the primary pressure control.

Variable displacement pump and gearbox control system

A pump has a suction region, a pressure region, and a pressure space which has an outflow region. A rotor is connected to a shaft in which rotor delivery elements are displacably received. The rotor has expelling regions connected to the pressure region by way of a first fluid path. A cold starting device is prestressed into a first functional position to shutoff a second fluid path from the pressure region to the pressure space, and is configured to be displaced counter to the prestress into a second functional position to open the second fluid path. The cold starting device is arranged in its second functional position at least in regions with a relief face which faces away from the pressure region in a relief receptacle. The relief face is loaded during operation of the pump with a pressure being smaller than a system pressure in the outflow region.

Pump having a cold starting device

The invention describes a method for executing an application (A) which comprises executable native or interpretable code and calls functions of an operating system (BS), whereby the operating system (BS) transmits a result of the respective function call (f) to the application (A). The method according to the invention is characterized by the fact that the application (A) checks the result of a respective function call for a falsification, so as to detect an attack.

Method for executing an application

A method for completing at least one portable data carrier connected to a completion device, wherein a completion data set that is present on the completion device is introduced into the data carrier. A security module is connected to the completion device and different authorization data sets are provided on the security module. The security module includes a management application for managing the different authorization data sets. Each of the authorization data sets exactly specifies one completion, and each of the authorization data sets is exactly associated with one completion data set. The managing application on the security module monitors the completion of the at least one data carrier according to the specification in an authorization data set selected from the different authorization data sets.

Completion of portable data carriers

Growing community of inventors

Hohenlinden, Germany

Ludger Holtmann