Abstract: A navigation system may estimate a cruising range of a vehicle by performing a road network search. Digital map data that includes a set of road segments, where each road segment in the set can be associated with a hierarchy class and an elevation, may be retrieved. A road segment-specific weighting factor can be calculated for the road segments. The weighting factor can be calculated dependent on a distance of the specific road segment to a current location of the vehicle and on the elevation of the specific road segment. The road segments are selectively discarded by the navigation system based on the weighting factor and the associated hierarchy class to create a selected set of road segments. The road network search expands route links for the selected set of road segments based on an associated estimated energy consumption of the vehicle travelling along the route links.

Abstract: A navigation system (NS) may include a processor that can retrieve geographic map data from a database, where the geographic map data includes polygonal chains. The processor can determine a straightness value, a length ratio, and/or an angle-to-length ratio for each of the polygonal chains based on segments and/or vertices of the polygonal chain. Also, a first class and a second class of the polygonal chains can be determined based on one or more of the three determined values for each of the polygonal chains. The first class may represent roads that are less winding than the second class, and such an attribute may be beneficial in selecting an optimal route.

Abstract: A navigation system (NS) can determine a junction between a current position of a user and a maneuver point of a route. Additionally, the NS can determine, change, and output an explicit notification not to turn at the junction.

Abstract: A navigation system for an electric vehicle may ascertain a selection of a charging station based on a user input, wherein a stored position of the charging station is an ultimate destination. The navigation system can ascertain a current position of the electric vehicle. In addition, the navigation system can ascertain a reachability of a target position that is separated from the current position and the stored position of the charging station. The ascertainment of reachability can be based on the current position of the electric vehicle, the stored position of the selected charging station, and the current state of charge of the energy storage device, so that the target position and subsequently the stored position of the selected charging station are reachable with the current state of charge of the energy storage device.

Abstract: A loudspeaker overload protection circuit and method receives at a compressor a signal representing the estimated loudspeaker power consumption; receives at the compressor a signal representing the nominal power of the loudspeaker; receives at the compressor an input audio signal from the signal source and supplying with the compressor an output audio signal to the loudspeaker; estimates from the output audio signal, (a) signal(s) that represent(s) the voltage and/or current supplied to the loudspeaker and a parameter that represents the ohmic resistance of the loudspeaker the power consumed by the loudspeaker; supplies a signal representing the estimated loudspeaker power consumption to the compressor; and attenuates the input audio signal when the signal representing the estimated loudspeaker power consumption exceeds the signal representing the nominal power of the loudspeaker.

Abstract: Various embodiments relate to an antenna assembly for providing wireless coupling to a remote antenna. The antenna assembly comprises a first antenna and a second antenna. The second antenna is fixedly attached to a mount spaced by a distance along a first direction from the first antenna. The first antenna is configured to provide the wireless coupling along the first direction via transceiving of a time-varying field. The second antenna is configured to provide the wireless coupling by setting-up a decay of the time-varying field along the first direction. The interface is connected to an electric circuitry configured for controlling the transceiving. The second antenna is configured to operate as a passive electrical element.

Abstract: A brightness adjustment system of a surround view system may include at least two adjacent image sensors providing images covering different fields of view of a user's surroundings. A first image sensor and a second image sensor of the at least two image sensors may be configured to capture images using an adjustable exposure time. An exposure time control unit may be provided that may be configured to determine, for the at least two adjacent image sensors, one or more brightness parameters from image data provided by the image sensors. The exposure time control unit may be further configured to control the exposure times of the image sensors such that the brightness parameter(s) determined for the first image sensor at least approximately matches one or more corresponding brightness parameters determined for the second image sensor.

Abstract: A circuit board system, a circuit board arrangement and a method for producing a circuit board arrangement are disclosed. The system comprises a first circuit board and a second circuit board, each having a top side and a bottom side; at least one first electronic component mounted on the bottom side of the second circuit board. The first circuit board has, on its top side, a plurality of electrically conductive first contact elements. The second circuit board has, on its bottom side, a plurality of electrically conductive second contact elements. Further, a recess is formed in the first circuit board. The second circuit board is mountable on the first circuit board such that the bottom side of the second circuit board faces towards the top side of the first circuit board, that the at least one first electronic component is arranged at least partly in the recess; and that each of the first contact elements matches one of the second contact elements.

Abstract: Various embodiments relate to a system for adapting a signal gain, which comprises a peak detector configured to receive an audio input signal containing consecutive signal blocks and to dynamically establish a current input signal level of the audio input signal, and a loudness determination unit configured to dynamically determine a perceived loudness of a current signal block of the audio input signal based on a psycho-acoustic model of a human hearing. Furthermore the system comprises a time constant generation unit configured to determine a time constant based on the perceived loudness of the current signal block and the perceived loudness of a preceding signal block, wherein the time constant describing a change of the signal gain. A gain determination unit is configured to determine the signal gain for the current signal block based on the time constant and the current input signal level.

Abstract: An equalization filter structure for filtering an audio signal within an audio system is disclosed. The equalization filter comprises a first and a second shelving filter each having a fixed first and a fixed second phase response, each of which is determined by a respective cut-off frequency and Q factor which represent the transfer characteristic of the corresponding shelving filter. The first and the second shelving filters are coupled in series and each shelving filter comprises at least one fourth order low-pass filter having a cut-off frequency, a Q factor and a first broadband gain and further at least one fourth order high-pass filter having a second broadband gain and the same cut-off frequency and the same Q factor as the low-pass filter. The fourth order low-pass filter and the fourth order high-pass filter are connected in parallel, such that both filters receive the same input signal and the corresponding filtered signals are summed to form a respective shelving filter output signal.

Abstract: Displaying an environment of a vehicle comprising recording an image of an adjacent exterior environment of the vehicle in the form of image data with the aid of a plurality of image capture units and displaying an output image with the aid of a display device. A virtual, three-dimensional space and a surface are determined with the aid of an arithmetic unit the virtual, three-dimensional space being at least partially delimited by the surface. A projection of the image data onto the surface is calculated with the aid of the arithmetic unit. A virtual vehicle object from predetermined data is calculated as a computer-generated graphic in the virtual, three-dimensional space with the aid of the arithmetic unit.

Abstract: The invention relates to a head tracking system that determines an absolute head position of a user's head. The head tracking system comprises a first positioning system and a second positioning system. The first positioning system comprises a reference unit that is fixedly installed remote from the head and defining a first coordinate system. The first positioning system further comprises a positioning unit attached to the head and configured to communicate with the reference unit to establish position data including indicators indicating a head position in the first coordinate system when the positioning unit is within a field of view of the reference unit. The second positioning system comprises a digital compass attached to the head and configured to establish second position data including indicators indicating a head position in a second coordinate system.

Abstract: A device for a conference system and method for operation thereof is provided. The device is configured to receive a first audio signal and a first identifier associated with a first participant. The device is further configured to receive a second audio signal and a second identifier associated with a second participant. The device includes a filter configured to filter the received first audio signal and the received second audio signal and to output a filtered signal to a number of electroacoustic transducers. The device includes a control unit connected to the filter. The control unit is configured to control one or more first filter coefficients based on the first identifier and to control one or more second filter coefficients based on the second identifier. Preferably the device comprises a headtracker function for changing the first and second filter coefficients depending on tracking of head's position.

Abstract: A method of displaying points of interest in a perspective view of a geographical area on a display of a navigation device is provided. In the method, a perspective view of the geographical area is displayed on the display of the navigation device. Further, points of interest are displayed as graphical symbols in the perspective view, wherein the size of each graphical symbol is dependent on the distance of the respective point of interest from a view point of the perspective view, such that graphical symbols for points of interest located further away from the view point are displayed smaller than graphical symbols for points of interest located closer to the view point. Each point of interest is associated with a point of interest-category.

Abstract: The invention relates to a sound system in a vehicle. The sound system comprises a first audio signal source providing a first audio signal and a second audio signal source providing a second audio signal. The sound system further comprises loudness determination unit is configured for determining a loudness of the first audio signal based on a psycho-acoustic model of a human hearing and a type information unit configured for establishing type information of the second audio signal. The sound system further comprises a control unit configured for individually selecting, for each of at least two playback zones, a mixing mode depending on the type of the second audio signal, wherein the mixing modes relate to a relation between signal output gains of the first and second audio signals.

Abstract: For generating a landscape texture of a geographical map, a plurality of images captured by one or more hand-held devices equipped with a camera are obtained. Further, additional data associated with each of the captured images are obtained. These additional data include a geographical position of the camera when capturing the image, inner camera orientation data representing properties of the camera when capturing the image, e.g., a focal distance, a camera constant, and/or a position of an image principal point, exterior camera orientation data representing an orientation of the camera when capturing the image, e.g., an angle representing an orientation of an optical axis of the camera with respect to a horizontal plane and a barometric height of the camera when capturing the image. On the basis of the barometric height and the geographical position, a ground height of the camera above a ground surface is determined.

Abstract: A method and system for generating augmented reality with a display of a vehicle is provided. The method comprises recording an image of an environment of the vehicle in the form of image data, determining a virtual space in three dimensions from the image data, and detecting a real object in the image data. The method further comprises determining a first coordinate range of the real object in the three dimensional virtual space, adding a virtual element to the three dimensional virtual space, and controlling the virtual element in the three dimensional virtual space based on a user input. The method further comprises outputting the environment and the controlled virtual element in combined form in an output image, modifying the output image when the first coordinate range of the real object and a second coordinate range of the controlled virtual element form an intersection area, and displaying the output image.

Abstract: An active noise control system and method for tuning an acoustic noise signal at a listening position are disclosed in which a first weighting element is connected in the filter coefficient copy path and/or a second weighting element is connected in the microphone path.

Abstract: A navigation system includes a database that stores navigation data used for providing the navigation information to the user, the navigation data being stored in data sets. An application is configured to process the navigation data in order to generate the navigation information. A parsing unit parses the data sets in such a way that a data structure of the data sets is identified and that the data sets can be executed by the application, wherein the navigation data contain first data sets which have been parsed by the parsing unit and which are stored in the database as pre-parsed data sets, each of the first data sets containing an indication that the data set is a pre-parsed data set, the navigation data further containing second data sets which have not been parsed and which are stored in the database as unparsed data sets. Each of the second data sets contains an indication that the data set is an unparsed data set.

Abstract: A device and method for synchronization of data for audio and/or video between a memory of a device in a motor vehicle and an external device is provided. The method comprises synchronizing the data between the memory and the external device through a radio connection through a synchronization unit. The method further comprises outputting a status signal (St) based on a charge state (C) of the first power source by a monitoring unit to the synchronization unit and signaling from the synchronization unit to the external device an interruption of the synchronization due to low charge level. The method further comprises terminating the synchronization of the data based on the status signal (St) indicating that the charge state (C) of the first power source is below a threshold (th) and/or that a second power source for charging of the first power source is disconnected from the first power source.