Abstract:
A permanent joint includes a fitting, a sleeve, and a pipe. The fitting exhibits a base body, an outer body and a supporting body, wherein the outer body and supporting body form a groove between them, the inner peripheral surface of the outer body exhibits at least one latching groove, and the outer peripheral surface of the supporting body exhibits a sealing surface inclined relative to the axis of the fitting. The sleeve exhibits at least one latching projection arranged on the outer peripheral surface and at least one open slit running in the axial direction, wherein at least one fixing projection is arranged on the inner peripheral surface in the area of the latching projection. The sleeve embraces a pipe end under a pre-stress, wherein the pipe end with the sleeve engages into the groove under a pre-stress, and the latching groove and latching projection create a frictional connection.
Abstract:
A method of transmitting digital data by radio signals in orthogonal frequency division multiplex (OFDM). Digital data is divided into error protection classes and the power level of the digital data is altered according to the particular error protection class. In addition to the data thus altered, error protection class data is transmitted in a separate logic channel. By using this error protection class data, a reception device is able to reverse this change in power level and perform a correct demodulation. The error protection class data is generated on the basis of the number, length and transmission reliability of the error protection classes and on the basis of transmission parameters. The digital data, divided into frames, is first assigned to services, and then these services are assigned to a corresponding error protection class.
Abstract:
A method for transmitting radio signals and a receiver for receiving radio signals are described which are used to present a radio station which is transmitted on multiple frequencies with the data on the frequency that has the best signal quality. Via received radio signals the receiver is provided a list of all the frequencies on which radio stations are transmitted, the receiver checking each frequency to determine whether the frequency belongs to the radio station selected by the user and whether the signal quality is better than that which is used for the presentation of the radio station. Test symbols having pilots and useful data signals are used to determine the signal quality. An identification number for the radio station is determined from the useful data signals of the test symbols before the signal quality is checked and a channel estimate is made via the pilots. The test symbols are modulated with coherent QPSK. A test symbol is recognized in the data flow by a different protective interval.
Abstract:
Microphone systems having wireless microphones are often used in events such as discussions, concerts, plays, etc. and normally have a plurality of wireless microphones which are worn by users, such as actors, musicians, singers, etc, and one or more receiving stations which receive the audio signals of the wireless microphones and forward said signals to mixing consoles, amplification systems, recording devices, etc. In addition to the basic functionality of transmitting audio signals, microphone systems have become known which implement additional functions. The invention relates to a microphone module 2 having a transmitting unit 6 wherein the transmitting unit 6 is designed for the wireless transmission of audio information to a base station 3, having a receiving unit 8, wherein the receiving unit 8 is designed to receive wirelessly transmitted status information and/or messages from a transmitter 4, 12 and having an output device 13, 14 for the output of the status information and/or messages to a user of the microphone module 2.
Abstract:
The invention relates to a tool for processing a workpiece in particular for pressing, holding and/or cutting a pipe, having a first pair of jaws which has a first upper jaw and a first lower jaw, having a first effective area formed between the front ends of the first jaws, having a first inlet contour formed between the rear ends of the first jaws and having a holding device which movably accommodates the first jaws independent of one another, wherein the first jaws can be pivoted between an open position and a closed position. The present invention is based on the technical problem of specifying a tool, by means of which in one process at least one first and one second effect can be assigned to the tool independently from one another in time.
Abstract:
An antenna arrangement for vehicle-to-vehicle communication includes at least two antenna transmitters each having a unidirectional directional diagram. The antenna transmitters are positioned in such a manner that a combination of the unidirectional directional diagrams of the antenna transmitters generates a largely omnidirectional directional diagram by way of a method for transmitting and/or receiving.
Abstract:
Method and apparatus for signal reconstruction enabling the sharing of analog-to-digital converter resources among signals. Embodiments include a signal reconstruction method that allows reconstruction of multiple non-uniformly sampled signals while avoiding unwanted side effects such as aliasing.
Abstract:
Method and apparatus for signal reconstruction enabling the sharing of analog-to-digital converter resources among signals. Embodiments include a signal reconstruction method that allows reconstruction of multiple non-uniformly sampled signals while avoiding unwanted side effects such as aliasing.
Abstract:
A rubber mounting, in particular for a motor-driven pump unit of a power steering system, the rubber mounting has a holding flange, a bolt which starts to extend from the holding flange, a rubber element disposed on the bolt, and a fastening eye disposed on the rubber element. The bolt is waisted so that a particularly high flexibility of the rubber mounting in the case of movements in a plane perpendicular to the longitudinal axis of the bolt is achieved.
Abstract:
A method for adjusting transmission parameters of a transmitter for digital radio signals, for example, broadcast signals, is described, in which context a receiving apparatus receives the digital radio signals emitted by the transmitter and transfers data to the transmitter via a return channel, transfer data and reception parameters being contained in the data. The transmitter then optimizes the transmission parameters as a function of these data. It is possible in this context that in the data, the transfer data either contain the received digital radio signals, or already have evaluation data from the receiving apparatus. The method is suitable in particular for digital radio signals that are transferred below 30 MHz. The return channel is operated either in simplex mode from the receiving apparatus to the transmitter, or in duplex mode.