Abstract: A method is disclosed comprising receiving identification information on an addressee, to whom an encrypted data object is sent by a transmission device or for whom the encrypted data object is to be provided by the transmission device for retrieval, from the transmission device to a server, associating the identification information with a key for decrypting the encrypted data object by the server, sending the key for decrypting the encrypted data object to the addressee by the server, or providing by the server the key for decrypting the encrypted data object for retrieval by the addressee.

Abstract: A monolithic lens mount is formed by an annular body which is divided through material recesses into an outer mount ring, an inner mount ring and three connection structures which are arranged so as to be offset by 120° relative to one another. The connection structures in each instance form a chain of at least three, preferably five, connection webs which transition into one another and which are constructed as radial connection webs and axial connection webs. The axial flexural stiffness and radial flexural stiffness and the torsional stiffness of the connection structures can be determined via the dimensioning of the radial connection webs and axial connection webs.

Abstract: A distributed antenna system including a plurality of remote antenna units, a passive element coupled to at least one of the remote antenna units and an RFID system located proximate the passive element. The RFID system includes processing circuitry and measurement circuitry and the processing circuitry is configured for receiving an interrogation signal and processing the interrogation signal and providing a response. The response includes data associated with a measurement made by the measurement circuitry.

Abstract: An energy supply device for providing electric energy, wherein the energy supply device has at least one input interface for receiving electric energy and an output interface for outputting electric energy, and wherein at least one supercapacitor is connected between the input interface and the output interface.

Abstract: A pressure welding device (1), especially a friction welding device, holds workpiece parts (2, 4) in clamping devices (6, 7) and axially moves the workpieces towards each other by means of a feed device (21). The pressure welding device (1) has a measuring device (8, 13), measuring in a contactless manner. The measuring device detects the surface condition and/or the concentricity and/or true running and/or the axial runout and/or radial runout in a front welding region (3, 5) of a workpiece part (2, 4).

Abstract: An exhaust gas turbocharger may include a turbine housing and a turbine. The turbine housing may include at least two exhaust gas channels and a partition. A wastegate valve may be arranged such that the at least two exhaust gas channels are connectable to a bypass duct bypassing the turbine. The wastegate valve may include a hollow valve body and a valve seat interacting with the valve body. The wastegate valve may be configured such that at least one of ram supercharging and pulse supercharging is performed. A connecting opening may be arranged between the at least two exhaust-gas channels. The valve body may have a base region configured to facilitate a discharging of an exhaust-gas steam into the bypass duct and/or an overflowing of one exhaust gas channel through the connecting opening into the other exhaust-gas channel.

Abstract: In a method for optically measuring the properties of at least one measurement path (I1, I2) between a transmitter (H) and a receiver (D), the receiver (D) receives an optical signal from a compensation transmitter (K) in addition to an optical signal from the transmitter (H). The signal of the transmitter (H) is reflected by an object (O) or is transmitted to the receiver (D) by means of said object in a different manner. The output signal (SO) of the receiver (D) is fed to a controller (CT), which changes the transmitter feed signal (S5) and/or compensation feed signal (S3) in accordance with a control algorithm. In the process, the controller (CT) determines two signals or values, which represent control parameters (S4a, S4?) for magnitude and phase or magnitude and delay.

Abstract: Embodiments are disclosed for vehicle systems. An example system for a vehicle, includes a head-up display, and a central unit connected to the head-up display, wherein the head-up display is configured to project an image onto a front windshield of the vehicle or onto a separate combiner, wherein the central unit is configured to send image data to the connected head-up display to be displayed, to ascertain a position of the user's eyes, to output a symbol within the image data, to ascertain a first virtual point and a second virtual point in a surrounding of the vehicle based on a recorded image of the surrounding and/or a current position of the vehicle, and to position the symbol such that a starting point of the symbol overlaps the first virtual point and an end point of the symbol overlaps the second virtual point in a view of the user.

Abstract: A fault current sensor for a fault current protection device for monitoring an electrical consumer for a vehicle is provided. The fault current sensor has a measuring device for measuring a differential current between a first electrical current in an electrical forward conductor, which conducts from a control device for controlling the electrical consumer to the electrical consumer, and a second electrical current in an electrical return conductor, which conducts away from the electrical consumer. The fault current sensor also has a reporting device for reporting a fault current at the control device via the forward conductor depending on a comparison of the measured differential current with a threshold value.

Abstract: A method for controlling operation of a winch, which has a capstan drive unit for hauling a cable into the winch and for paying the cable out of the winch, a main drive for driving the capstan drive unit, a cable drum for receiving the cable by winding up and unwinding the cable, a drum drive for driving the cable drum, wherein the drum drive and the main drive are operable independently of one another, and a rotational speed measuring device which is arranged in a cable inlet portion of the winch. The method has a step of reading a first rotational speed from the main drive and a second rotational speed from the rotational speed measuring device. In addition, the method has a step of determining a torque value for setting a torque of the drum drive depending on the first rotational speed and the second rotational speed.

Abstract: Uplink leveling systems and methods for a distribution antenna are provided. An uplink leveling system includes at least one communication path between a base station point of interface and a remote antenna unit. A broadband measurement detector is communicatively coupled to measure signal power in the at least one communication path at the base station point of interface. A signal measurement receiver is communicatively coupled to measure signal power in the at least one communication path. A test signal generator is configured to generate a test signal in the at least one communication path in an uplink. At least one controller is configured to level the communication path in the uplink direction based at least in part on measurements by the broadband measurement detector and the signal measurement receiver in response to the generated test signal by the test signal generator.

Abstract: A repeater system includes a first master unit and a second master unit located on the movable object, such as a train. The master units are each connected to an antenna for receiving a downlink RF signal from at least one base station outside of the movable object and for transmitting an uplink RF signal towards the base station. Remote units are associated with different coverage areas within the movable object and are connected to the master units unit via a transport medium. The remote units are each connected to an antenna system for transmitting the downlink RF signal into the associated coverage area of the movable object and for receiving the uplink RF signal from the coverage area. A control unit can control first gain for the connection with the first master unit and a second gain for the connection with the second master unit.

Abstract: A temperature detection device (10) for a vehicle heater detects a fluid temperature. The device includes a temperature sensor (12) as well as a contact element (14) with a first side (16), around which the fluid can flow in at least some sections, and with a second side (18) facing away from the first side (16). The temperature sensor (12) is configured as a radiation sensor. The contact element (14) is arranged relative to the temperature sensor (12) such that at least a part of the radiation emitted from the second side (18) of the contact element (14) can be received by the temperature sensor (12).

Abstract: An unmanned underwater vehicle may comprise a remotely operated underwater vehicle and an autonomously operating underwater vehicle. The unmanned underwater vehicle may also comprise a first connection to the remotely operated underwater vehicle. The first connection may serve to exchange data. The unmanned underwater vehicle may additionally comprise a second connection to the remotely operated underwater vehicle. The second connection may serve to supply energy. The unmanned underwater vehicle may still further include a third connection to the autonomously operating underwater vehicle, which third connection serves to exchange data.

Abstract: Certain aspects are directed to a capacity optimization sub-system for a distributed antenna system. The capacity optimization sub-system includes a switch matrix and a controller. The switch matrix includes variable attenuators and switches. The switch matrix can receive sectors from base stations. The switch matrix can provide the sectors to coverage zones. The controller can communicate with the switch matrix. The controller can determine that a number of wireless devices in one or more of the coverage zones is outside a specified range of threshold traffic levels. In response to determining that the number of wireless devices is outside the specified range of threshold traffic levels, the controller can configure one or more of the variable attenuators and corresponding switches to redistribute capacity among the coverage zones by, for example, increasing and/or decreasing capacity in one or more of the coverage zones.

Abstract: An exterior helicopter light unit (2) with a dynamic output light intensity distribution includes a plurality of LEDs (30), and an optical system (32) for shaping the output light intensity distribution from light emitted by the plurality of LEDs (30), wherein each of the plurality of LEDs (30) contributes to the output light intensity distribution in an LED-specific output direction region, wherein at least a portion of the plurality of LEDs (30) are individually dimmable, with a level of dimming for each of said portion of the plurality of LEDs (30) in operation being set depending on a distance of the exterior helicopter light unit (2) to ground (200) in the respective LED-specific output direction region.

Abstract: A method for detecting a state of change of an installation includes rotating at least one first component around a rotatable connection using a drive such that at least part of the at least one first component carries out an oscillation. The at least one first component is mechanically connected to a second component via the rotatable connection. The method further includes recording the oscillation using a third component. The method includes investigating the recorded oscillation for changes based on a reference value. The method further includes detecting the state of change of the installation in reference to the changes to based on the reference value.

Abstract: An interior aircraft light unit includes at least one light source, in operation emitting light with a source side light intensity distribution, the source side light intensity distribution having a first intensity region and a second intensity region, with the first intensity region having a higher light intensity than the second intensity region, and a semi-transparent layer, disposed between the at least one light source and an outside of the interior aircraft light unit, for transforming the source side light intensity distribution into an adjusted light intensity distribution, wherein the semi-transparent layer has a transparency distribution having a lower degree of transparency in the first intensity region than in the second intensity region, such that the adjusted light intensity distribution is closer to an even light intensity distribution than the source side light intensity distribution.

Abstract: An active noise reducing earphone includes a rigid cup-like shell having an inner surface and an outer surface is provided. The inner surface encompasses a cavity with an opening, and a microphone arrangement is configured to pick up sound with at least one steerable beam-like directivity characteristic, and to provide a first electrical signal that represents the picked-up sound. The earphone further includes an active noise control filter configured to provide, based on the first electrical signal, a second electrical signal, and a speaker disposed in the opening of the cavity and configured to generate sound from the second electrical signal. The active noise control filter has a transfer characteristic that is configured so that noise that travels through the shell from beyond the outer surface to beyond the inner surface is reduced by the sound generated by the speaker.