Abstract: A method for high-resolution spectral analysis in multi-channel observations is disclosed with which it is possible to detect ventricular late potentials in individual heartbeats. The method also offers the basis for the spatial localization of pathological tissue modification that has a cause-and-effect relationship to the creation of these late potentials. The applicability of the method of the invention can be similarly applied to problems in radar or sonar technology, astronomy, measuring mobile radio telephone channels or to other problems of seismic or medical signal processing.

Abstract: To compensate for quasi-periodic disturbances in measurement signals, the wanted signal is separated from the disturbing signal by determining from an auxiliary signal a series of trigger instants, and estimating from this measurement signal a disturbing signal template, by furthermore generating from this disturbing signal template a trigger-synchronous reference signal, and by using this trigger-synchronous reference signal for filtering the measurement signal. The process can be carried out both after the recording of a complete measurement data set and at the same time as the recording of such a measurement data set. The process is suitable in particular for compensating for cardio-interference during magneto-encephalography.

Abstract: A process is stated with which ADALINE-type neural networks whose inputs are Boolean variables can be realized using Boolean functions. In addition, a purely digital circuit arrangement for realizing ADALINE-type neural networks is stated. The digital circuit arrangement can be constructed with the aid of a digital base circuit. The digital base circuit generates the set of Boolean functions which replaces a neuron for any value of its input weighting factors. A process for training the circuit arrangement is stated. It is thus possible to realize and to train ADALINE-type neural networks entirely with the aid of purely digital circuit arrangements.

Abstract: A method for scene-model-assisted reduction of image data for digital television signals, whereby a picture signal supplied at time t is to be coded, whereby a predecessor frame from a scene already coded at time t-1 is present in an image store as a reference, and whereby the frame-to-frame information are composed of an amplification factor, of a shift factor and of an adaptatively acquired quad-tree division structure, and it is provided that, upon initialization of the system, a uniform, prescribed gray scale value or picture half-tone expressed as a defined luminance value is written into the image store of a coder at the transmitter and in the image store of a decoder at the receiver store, and are in the same way for all picture elements (pixels), and both the image store in the coder as well as the image store in the decoder are each operated with feed back to themselves in a manner such that the content of the image store in the coder and decoder can be read out in blocks of variable size, and can be

Abstract: An arrangement for optimized weighting of transmitted transformation coefficients in transformation coders for the purpose of minimizing convolution distortions in the transformation coding of image signals for the purpose of a data reduction and/or for the purpose of achieving a prescribed channel rate, has weighting circuitry whereby coefficients to be transmitted are additionally subjected to a weighting or windowing; and the selection of suitable weighting factors which effect a minimization of the convolution distortions in the reconstructed image is executed, dependent on the plurality of coefficients to be transmitted.