摘要:
The invention relates to a device for supplying energy to an RFID component, comprising an antenna and an energy store. The energy store stores energy that is induced into the antenna by an alternating electromagnetic field during a first time interval. Furthermore, the energy store supplies the RFID component with energy to maintain the functionality of the RFID component during a later second time interval if an energy induced by an alternating electromagnetic field during the later second time interval is not sufficient to supply the RFID component.
摘要:
The invention is based on the fact that a representation of an object can be improved by means of an irradiation, in view of an ensuing reconstruction of the object based on the representation. In order to achieve this, simulated data corresponding to a simulated irradiation of the object is used, before a reconstruction, as prior information for measuring an irradiation of the object and/or for producing the representation from a measured irradiation. The invention relates to a method for representing an object (10) by means of an irradiation. Said method involves preparing simulated data corresponding to a simulated irradiation of the object (10), in a memory (20) for example; using the simulated data for measuring an irradiation of the object (10) by means of a control mechanism (24), in a CT scanner (12) for example, in order to obtain the irradiation of the object; and/or using the simulated data for producing the representation from a measured irradiation by means of a data preparation device (26).
摘要:
The invention relates to a device for pre-treating a signal (S1) to be transmitted via a transmission path, said transmission path having a band-pass filter (14) whose pass-through bandwidth is less than a predetermined bandwidth, and a non-linear amplifier (16). The device comprises a linearisation device (20) for linearising the signal (S1) to be transmitted prior to transmission, in such a way as to counteract the non-linearity caused by the non-linear amplifier (16). The device also comprises a signal conditioning device (22) which is connected downstream of the linearisation device (20). The frequency response of the signal conditioning device is such that the overall frequency response of the signal conditioning device (22) and the band-pass filter (14) corresponds to the frequency response of a filter whose pass-through bandwidth is at least equal to the predetermined bandwidth.
摘要:
The invention relates to a DECT transmitting-receiving terminal (50) comprising a number of transmitting-receiving antennas (52, 54) for communicating with a DECT base station, and comprising a device (62) for determining the quality of a communications connection between the DECT transmitting-receiving terminal and the DECT base station. The inventive terminal is also provided with a device (56) for effecting a switch-over from a transmitting-receiving antenna to another transmitting-receiving antenna, which is connected to the device (62) for determining quality. Said device (56) effects the switch-over when the quality of the communications connection falls below a predetermined threshold. To this end, an antenna diversity effect is realized for the DECT transmitting-receiving terminal and leads to the improvement of the transmission quality of the communications connection.
摘要:
When coding and decoding stereophonic spectral values, both the intensity stereo process and a prediction process are used to achieve a high data compression. When an intensity stereo coding is active in a section composed of scaling factor bands (28), prediction for the right channel (R) is deactivated in this area, so that the prediction results are not used to build the coded stereophonic spectral values. The predictor of the right channel (R) is supplied with stereophonic spectral values for this channel which are in turn decoded by an intensity stereo process, so that prediction for the right channel (R) can continue to adapt itself.
摘要:
Die Erfindung beschreibt ein digitales adaptives Transformationscodierverfahren für die Übertragung und/oder Speicherung von akustischen Signalen und insbesondere von Musiksignalen, bei dem N Abtastwerte des akustischen Signals in M Spektralkoeffizienten transformiert werden, die nach Aufteilung in Frequenzgruppen quantisiert und codiert werden. Die Erfindung zeichnet sich dadurch aus, daß zur Beschreibung des Grobverlaufs des Spektrums der quantisierte Maximalwert jeder Frequenzgruppe verwendet wird. Ferner werden allen Werten einer Frequenzgruppe die gleiche Bitzahl zugeteilt, und daß die Bitzuteilung zu den einzelnen Frequenzgruppen entsprechend dem in dieser Frequenzgruppe auftretenden quantisierten Maximalwerts erfolgt. Ferner wird ein Multi-Signalprozessorsystem insbesondere zur Realisierung dieses Verfahrens beschrieben. Abstract In a digital adaptive transform coding process for transmitting and/or storing acoustic signals, in particular musical signals, scanning values N of the acoustic signals are transformed into spectral coefficients M which are divided into frequency groups, and then quantified and coded. According to the invention, the quantified maximum value of each frequency group is used to characterize the general course of the spectrum. In addition, the same bit number is allocated to all values of a frequency group and the bits are allocated to the individual frequency groups on the basis of the quantified maximum value in the respective frequency group. Also described is a multi-signal processing system, in particular for implementing the process.
摘要:
The invention relates to a method for reducing peak values in single-carrier modulated or multi-carrier modulated digital transmitter signals, according to which the peak value is first determined from a plurality of sequential symbols contained in said digital signal. If a predetermined value is exceeded a replacement symbol is generated which replaces a predetermined transmitter symbol. The replacement symbol is selected such that it lowers the peak value and by means of a coding used to create the transmitter symbols can be converted error-free into the original transmitter signal.