Zellweger Luwa Ag

Phonak Ag

Bruker Biospin Ag

Bruker Switzerland Ag

Rolf Hensel

Hans Wampfler

Peter Markus Seitz

Jeffrey M Raynor

Werner H Tschopp

Michael Schenkel

Alfred Aschmann

For the visualization of the hearing ability or hearing recognition respectively of a person with or without a hearing device at least one hearing dimension as for instance the loudness recognition is being made visible by means of a picture by varying at least one picture parameter such as for instance the brightness. The visualization can also be achieved by fade-in or fade-out of individual objects or a plurality of objects within a picture.

Process for the visualization of hearing ability

A device for compensating field disruptions in magnetic fields of electromagnets with high field homogeneity, in particular, for stabilizing the H0 field of an MR measuring system, comprising at least one field detector () for detecting interfering signals (U), at least one control loop for processing the detected interfering signals (U), and at least one compensation coil () to which the detected and processed interfering output signals (U) are transferred and which generates a correction field for compensating the interfering signals (U), is characterized in that at least one of the control loops comprises a multi-selective filter system () which comprises one or more parallel connected selective filter elements whose center frequencies can be tuned either once or in an adaptive fashion to the frequency values of the interfering signals (U) to be compensated for, wherein the outputs of these filter elements are connected to at least one of the compensation coils (). The inventive device permits selective detection of periodic field disturbances with high frequency components while a major part of the existing noise is faded out, thereby increasing the SINO.

Device and method for compensation of magnetic field disruptions in highly homogeneous magnetic fields

The invention relates to a device and a method for the optical recording of at least one parameter on a longitudinally moved thread-type material. To enable parameters such as the diameter of a thread-type material, the diameter of a yarn package, the hairiness of a yarn etc. to be determined more simply and more accurately, an optical sensor composed of at least two individual sensors (,), in which at least one individual sensor is so constructed and arranged that at least one measured value is recorded digitally for a parameter, is to be used to record in parallel from the material at least two signals, one at least of which is clocked.

Device for optically recording, digitally, a parameter on a longitudinally moved thread-type material

A number of sensors, each including a light source, illuminating and imaging optics and a detector, are arranged decentrally on a spinning or winding machine having a number of thread lines to provide online monitoring of the winding quality of a number of bobbins during the production of the bobbins. The sensors are preferably mounted on bobbin changers to traverse back and forth across a plurality of thread lines to examine a plurality of bobbins as they are being wound. These sensors are used on spinning or winding machines equipped with an electronic yarn-clearing system, with an interlinking of the measurement signals.

Apparatus for checking the winding quality of yarn bobbins and use of

The surface of a yarn (G) is imaged on a sensor (7) having a plurality of sensor elements of differing structural arrangement. The signals of the individual sensor elements are compared with one another, and the structure of the examined yarn surface is determined on the basis of correspondence with the appropriate sensor element. The structure to be examined is formed both by the actual yarn surface and by the yarn edge, including projecting fibers and possible impurities, such as foreign fibers, included in the yarn.

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Zurich, Switzerland

Rolf Hensel