Nanotron Gesellschaft Fur Mikrotechnik Mbh

Createc Gesellschaft Fur Elektrotechnik Mbh

Nanotron Technologies Gmbh

Nanotron Gesellschaft Fur Mikrootechnik Mbh

Manfred Koslar

Rainer Hach

Rainer Holz

Zbigniew Ianelli

A method and a device for the coding and/or decoding of an information symbol for transmission over a transmission channel or a received signal value is described and illustrated, whereby a channel symbol used for coding is selected from at least two available channel symbols by means of a pre-calculated expected received signal value. The pre-calculation is achieved, based on the echo properties of the transmission channel and transmission values already sent. A pre-coding method with low receiver-side calculation requirement is thus prepared, whereby the information symbol can be transmitted by means of various channel symbols and thus various transmission values can also be transmitted. The possible selections may be used for minimization of the transmission energy and/or to achieve a minimal disturbance or even a constructive effect through the inter-symbol interference occurring on transmission.

Method for coding and decoding an information symbol

Surface-wave transducer device and identification system with such device

Transmission method in which angle-modulated pulses with temporally opposite angle modulation are generated in the receiver during the duration of the pulse, which pulses are superimposed by means of a first superimposing element ( ), in each case in pairs, into a folded pulse, whereby the folded pulses transmitted to the receiver, after a modulation process, carry information impressed upon them, and these folded pulses are filtered at the receiver through two parallel-connected, complementary dispersion filters with frequency-dependent group delay characteristics, whereby the frequency-dependent group delay characteristics of the two dispersion filters are matched to the angle-modulation, in each case, of one of the two pulses forming in their superposition the folded pulse, in such a way that at the output of the dispersion filter, in each case, a combined signal appears that consists of one compressed pulse with increased amplitude and one expanded pulse with decreased amplitude, whereby the signals at the outputs of both dispersion filters at the receiver are combined by means of a second superimposing element.

Method of transmission and device to carry out said method

Method for wireless information transfer, in particular for mobile communications, in which an input signal (s , g ) is subjected to a modulation in a transmitter ( to ) and reaches a receiver ( to ) through a transmission channel, whereby angle modulated pulses, carrying information and possessing a frequency spectrum, are generated in the transmitter in such a way that they can be time compressed in a receiver by means of a filter ( ) with frequency dependent, differential delay time, also known as group delay, in such a way, that pulses arise with shortened duration and increased amplitude compared to the emitted pulses, and at least a portion of the information is imprinted onto the pulses using an additional modulation, independent of the angle modulation, arid/or is used for controlling a parameter of the angle modulation that can then be registered in the receiver.

Method for wireless information transfer

Disclosed herein is a method and apparatus for wireless communication with a medical device implanted in the human body. In the method disclosed herein an information input signal undergoes an angle modulation in a transmitter and reaches a receiver through a transmission channel. Angle modulated information carrying pulses with a frequency spectrum are generated. The pulses are time compressed in the receiver using a filter with frequency dependent transit time. The pulses are created with shortened duration and increased amplitude compared to emitted pulses. The pulses on the transmitter side are imprinted with at least part of information constituting a message using a further modulation or encoding procedure of telecommunications. At least part of the information constituting the message is additionally imprinted onto the angle modulation.

Method for wireless communication transfer with an implanted medical device

Measuring and/or control system ( ) for detection of the distance of an object ( ) or of a person from a predetermined reference point, with a first transmitting/receiving device ( ) for generation and wireless transmission of a control signal to a separate second transmitting and/receiving device ( ), as well as for receipt of an acknowledgment signal generated from the second transmitting/receiving device ( ) upon receipt of the control signal, whereby both of the transmitting/receiving devices display on the transmitting side a signal source ( ) that generates as a control and/or as an acknowledgment signal, pulses that display during the duration of the pulse a monotonically falling or rising frequency, or that consists of a super-position of these types of pulses in pairs, the other current transmitting/receiving device ( ) displaying on the receiving side for time compression of the received pulses, at least one dispersion filter ( ) having a predetermined frequency-dependent signal transit time, which is matchedadapted to the transmitting side modulation such that the spectral signal portions of the control and/or acknowledgment signal, because of the frequency-dependent different signal transit time through the dispersion filter ( ), appears at its output essentially coincidentally and, therewith, with little temporal imprecision.

Measuring and/or security system

A signal processing device having at least one input for analog input signals and one shift register or a corresponding data memory, an analog/digital converter and a processor for processing the digital signal train forming the output signal of the analog/digital converter, the signal train representing the signal course - which is preferably to be displayed in a display field - wherein the shift register is embodied as a digitally operating high-speed shift register or RAM and is connected to the output side of the analog/digital converter, in particular directly or with a data buffer interposed between them.

Growing community of inventors

Berlin, Germany

Manfred Koslar