Abstract: A method for filtering a digital signal sequence with adaptive filters given assistance of discrete parameter wavelet transformation is recited that, among other things, can be utilized in telecommunication technology for echo compensation. The method has especially small filter lengths, and thus low calculating outlay, for determining the optimum coefficient set for the filters employed.

Abstract: In processing web material, the material is passed through a guiding arrangement which has a plurality of guide elements. In order to enable removing the guide element for repair without disturbing the web material, each of the guide elements is provided with a lifting arrangement which is concentric to the guide element and is movable from one angular position withdrawn from the path of the elongated material engaging the guide element to a second position lifting the elongated material off of the guide element so that the guide element can be axially withdrawn from the machine.

Abstract: In a method for image analysis and correction of video signal values in the processing of video films, whereby analysis values with respect to image range, gradation and color cast of the individual frames of the video film are identified by the image analysis of the video signal values, and the correction of the video signal values is implemented on the basis of the analysis values, the video signal values are initially transformed according to a three-dimensional conversion function into the video signal values of an independent and sensation-conforming, equidistant color space. For each frame of a video sequence composed of a plurality of frames, at least one analysis value is determined on the basis of the transformed video signal values. At least one analysis values representative of the video sequence is formed by forming the average of the corresponding analysis values of the frames of the video sequence.

Abstract: In a method and system for monitoring the posture of a user during the use of a training apparatus, sensors are attached to the body of the user and possibly to specific locations of the training apparatus for acquiring specific kinematic parameters. The measurement data acquired by these sensors is analyzed in an evaluating unit in order to detect a faulty motion or posture of the user during the use of the training apparatus and to emit a corresponding acknowledging message to the user or to the training apparatus in this case.

Abstract: In a magnetic resonance imaging apparatus and method for obtaining NMR navigator echoes with slight disturbance of the longitudinal magnetization, an EPI pulse sequence is generated to irradiate an object to be examined. Excitation which is selective by means of a slice selection gradient, and which has a small flip angle &agr;<90° forms a navigator slice and supplies a signal which is read out in the EPI pulse sequence using phase encoding in a direction perpendicular to the slice selection direction and the read out direction. A spatially resolved navigator rod is obtained by reconstructing a column or row of the navigator slice.

Abstract: Medical diagnosis apparatuses (and a respective method for using such apparatuses) are provided, particularly large apparatuses operated in a centralized manner, (e.g., MR scanners, CT tomographs or the like), characterized by a patient acquisition device assigned to it for acquiring individual distinctive identification features of the patient, which are automatically stored with the apparatus data obtained.

Abstract: A magnetic resonance apparatus has a controllable device with which at least a part of the magnetic resonance apparatus can be fixed in a first control statue and with which the part can be held isolated with respect to mechanical oscillations in a second control statue.

Abstract: A ring laser gyroscope or other motion sensor is dithered at a first rate if a global positioning signal is available and/or when alignment is not being performed, and is dithered at a second rate if a global positioning signal is not available and/or when alignment is being performed. The second rate is greater than the first rate.

Abstract: In a MR transmission or reception system with a transmitter or with a receiver provided with a pre-amplifier that is connected to a transmission or reception coil, possibly via mixers and matching elements, at least parts of the transmitter or of the receiver and of the appertaining drive elements are integrated into the transmission or reception coil.

Abstract: A ventilator for connection to a patient to provide assisted breathing, has a gas flow generator, a pressure meter, a flow meter and a control unit, which determines a gas pressure, on the basis of a pre-set tidal volume for the patient and measurement signals from the pressure meter and flow meter, for each breath and which regulates the gas flow generator so that it generates the determined gas pressure. An improved breathing mode, better tailored to the patient, is achieved by the control unit also determining the gas pressure to be generated by the gas flow generator on the basis of mechanical resistances and a variable corresponding to the aggregate effect of the resistance and elastance of the lungs.

Abstract: A method and system for computerized testing of a test piece, wherein testing is implemented by individual test modules operating in parallel. As a result, the total testing time is shortened. A central control computer and the test modules communicate via a field bus system. Implementation of a test occurs at least partially in parallel with respect to time by means of at least two different test modules. Transmission of test orders from the central computer to a test module and acknowledgment messages from the test module to the central control computer are carried by the field bus system. As a result, necessary wiring outlay is low and any interferences that occur can be quickly localized and eliminated.

Abstract: A surface acoustic wave component for high power capability has an aluminum electrode structure on a pyro-electric substrate. A surface of the substrate with the electrode structure thereon is a crystal cut surface which is positively electrically charged when the pyro-electric crystal material is heated. A hard layer is also provided on the electrode structures, preferably with a corresponding crystal cut orientation.

Abstract: A method for protecting an item of software, wherein at least one challenge means is associated with said protected item of software, and at least one response means accesses one private keying material. The challenge means has no access to said private keying material. The response means proves to the challenge means that the response means has access to the private keying material using an asymmetric probabilistic proof, e.g., zero knowledge proof. The challenge means validates this proof using the public keying material that corresponds to the response means' private keying material.

Abstract: In a method applied and an x-ray system for determining a spatial relationship of X-ray datasets measured independently of one another, an x-ray apparatus registers X-ray datasets of a patient and a scale is provided that makes position data available that are identifiable in at least one of the registered dataset. The position data serve for the determination of the spatial relationship between at least two X-ray datasets that were registered from different body portions of the patient.

Abstract: A magnetic resonance apparatus has magnet systems which respectively generate a basic magnetic field, gradient magnetic fields and a high-frequency magnetic field. A start element is connected to an end element via a coaxial cable. The coaxial cable is divided into at least two cable sections that are coupled to one another via a transformer having transformer coils. The transformer coils are directly connected to inner conductors of the respective coaxial cable sections and are connected to outer conductors of the respective coaxial cable sections via tuning capacitors.

Abstract: An anesthetic vaporizer has a receiving part devised for connection to a collar-equipped bottle, the receiving part having a locking device for locking/unlocking the bottle. Improved connection is achieved by providing the receiving part with a tubular section with a tube wall and an internal cavity, with a through opening arranged in the tube wall enabling the bottle's collar to move past the opening when the bottle is attached to the receiving part. The opening extends down at an angle to the center line of the tubular section, and the locking device has a resilient locking element partially arranged in the opening.

Abstract: A printer or copier has a sheet alignment apparatus including a pair of detents, or walls, at a right angle to one another against which the sheet is moved. To move the sheet, a sheet positioning mechanism is provided which includes two paddlewheels that engage the sheet as they rotate and that are directed offset from one another. The paddlewheels may be angled to shear with one another, and the mounting on which they are supported may be pivotable to redirect the paddlewheels.

Abstract: A semiconductor device includes first and second polysilicon areas on a chip. The first polysilicon area corresponds to circuit elements of the semiconductor device. At least some of the first polysilicon corresponds to polysilicon gates. At least some of the second polysilicon area comprises contacts of the semiconductor device. Metal covers the polysilicon contacts.

Abstract: In a magnetic resonance apparatus having a magnet arrangement which generates: a basic magnetic field in a horizontal direction, an imaging volume with a central region that is freely accessible in at least one horizontal direction substantially orthogonal to the basic magnetic field, upper and lower elements that are spaced apart in a vertical direction and between which the imaging volume is disposed, and a connector element that connects the upper and the lower elements, at least one gradient coil is provided which extends at least in regions of the upper element, the lower element and the connector element.

Abstract: An air data sensor for an aircraft has a flush mounted plate at the outside surface of the aircraft and a housing for the sensor within the aircraft below the plate. A plurality of holes in the plate provide air flow to a pressure sensor in the housing. To prevent water from reaching the sensor, a trap chamber is provided below the holes. Various contorted air flow paths are disclosed. The tube to the pressure sensor may be heated.