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| Number | Title | Issue Date |
| 5691676 | Strip line filter, receiver with strip line filter and method of tuning the strip line filter Strip line filter, receiver with strip line filter and method of tuning the strip line filter. In ceramic filters for frequencies from 1 to 2 GHz, strip line resonators lying in one plane and coupled via the side are currently used in the state of the art... | 11/25/1997 |
| 5630020 | Learning method and neural network structure The invention relates to a method of learning which is carried out in a neural network operating on the basis of the gradient back-propagation algorithm. In order to determine the new synaptic coefficients with a minimum learning period, the invention int... | 05/13/1997 |
| 5519687 | Turntable device for an information disc Turntable (10) has a turntable bottom (19) and a turntable wall (20) which together define a locating space (21) in which the hub (7) of an information disc is engageable, and in which it is centered by means of a centering member (12) and clamped by magn... | 05/21/1996 |
| 5181168 | Accommodation device for assembly units A combination for facilitating the assemblage of signal processing equipment in which a first assembly unit can be secured on a base plate either parallel or at right angles to the base plate and wherein a second assembly unit can be arranged at right ang... | 01/19/1993 |
| 5163100 | Image processing circuit with reduced number of contact pads An integrated circuit for the processing of digitized signals which are representative of a source image which is defined by image elements which are encoded on M bits and which are arranged in I rows and J columns. The image is processed by means of M sl... | 11/10/1992 |
| 5150066 | Programmable digital signal delay device and its use for a error correction code device A programmable digital signal delay device for delaying a digital serial input signal SIN by a period ͌=M.H. (where M is an integer H is the bit rate) and transforms SIN into a delayed output signal SOUT having the same bit rate, the number M being progr... | 09/22/1992 |
| 5048528 | Alias suppression in pulsed doppler systems A Doppler velocity spectrum produced by radial projection in a two-dimensional Fourier frequency domain is processed to suppress alias spectral terms. The projected spectrum is divided into windows using an iterative algorithm which centers the spectral m... | 09/17/1991 |
| 5039464 | Process for densifying a ceramic part A process for densifying a ceramic part includes creating an oxygen-containing sealed atmosphere, heating and pressurizing a ceramic part within the oxygen-containing sealed atmosphere to a high temperature and a high pressure, soaking the part at the hig... | 08/13/1991 |
| 4969203 | Multiplicative sieve signal processing A masked monopolar sifting filter implemented by multiplying an input signal by a series of shifted nonuniform mask signals and selecting the minimum signal sample value from each resultant product. The intermediate signal thus produced is then again mult... | 11/06/1990 |
| 4969176 | X-ray examination apparatus having a stray radiation grid with anti-vignetting effect In apparatus for radiographic diagnostics an X-ray beam attenuated by an object to be examined is converted into a light image by means of an X-ray image intensifier tube. Inter alia as a result of the geometry of the X-ray beam and of the input screen of... | 11/06/1990 |
| 4930513 | Two dimensional processing of pulsed Doppler signals A processor for pulsed Doppler velocity measurement utilizes a two dimensional discrete Fourier transform to map wideband signals into a frequency space where constant velocity Doppler spectral components are represented as radial lines. A radial projecti... | 06/05/1990 |
| 4903704 | Method and apparatus for MR imaging An MR imaging method and apparatus especially adapted for invivo cardiac MR imaging, rejects data acquired during periods of arrhythmia while maintaining the magnetic fields and pulsing of the RF coils during such periods. Data acquisition is resumed afte... | 02/27/1990 |
| 4896342 | X-ray apparatus The invention relates to an X-ray apparatus, comprising an essentially monochromatic radiation source which irradiates an examination zone in different positions by means of a primary beam having a small cross-section, a first position-sensitive detector ... | 01/23/1990 |
| 4894850 | X-ray apparatus for slit radiography The invention relates to the elimination of streak-like artefacts in slit radiography which are caused by an axial excursion of the rotary anode X-ray tube used for making the radiographs. These streaks can be eliminated by adapting the speed of displacem... | 01/16/1990 |
| 4894851 | Method of and device for measuring image lag in X-ray system In X-ray systems in which a beam of X-rays radiates through an object to be examined and is converted by an image intensifier into a light image, blur occurs in said image due to the image lag of the X-ray system to moving objects. In order to measure the... | 01/16/1990 |
| 4893283 | Echo ultrasound system with an improved image sequence rate An echo ultrasound imaging system comprising at least one array of elementary transducers, and further comprising an emission stage and a stage for the reception and for the processing of echoes reflected back towards the said array, said reception and pr... | 01/09/1990 |
| 4887285 | Method and device for determining the spatial distribution of chemicals in an object The invention relates to a method of determining the share of different chemical elements in a layer of an examination zone. The Compton scattered radiation and the Rayleigh scattered radiation are separately determined and the variation of the differenti... | 12/12/1989 |
| 4883060 | Device for eliminating fixed echoes for an ultrasonic echograph A device for eliminating fixed echoes for an ultrasonic echograph, comprising a first filter (100) which consists on the one hand of M parallel lines i (i=1, . . . , M) which a respective delay (i-1)T, where T is the repetition period of the echograph, an... | 11/28/1989 |
| 4882741 | Multileaf collimator and related apparatus A collimating arrangement for use in radiotherapy apparatus has a set of mutually contiguous members (8) for substantially attenuating radiation. The positions of the members (8) are adjustable so that edges (8a) thereof form an adjustable aperture (9) fo... | 11/21/1989 |
| 4873869 | Device for the scanning of objects by means of ultrasound echography An ultrasonic echography apparatus which comprises a first processing circuit (100) of a known type for the processing of the ultrasonic echos in order to display an A-type echogram on a display device (103), and a second processing circuit (200) which is... | 10/17/1989 |
| 4870971 | Transmit focus generator for ultrasound imaging A transmit focus generator circuit for pulsing an array of transducers in an ultrasound pulse echo imaging system for transmission of a focused beam of coherent ultrasound energy. A system clock is separated into eight phases. Focusing is achieved by cont... | 10/03/1989 |
| 4870305 | Circuit for performing the EXCLUSIVE-OR function A circuit for performing the EXCLUSIVE-OR function of a signal A and a signal B comprises field effect transistors of the MESFET type normally cut off in the absence of a gate-source signal. The circuit also comprises loads and is integrated on a semicond... | 09/26/1989 |
| 4870692 | Device for and method of subtraction imaging with reduction of motion artefacts Images formed by digital subtraction angiography are improved by subtracting a locally deformed image from another image. A subtraction image is obtained which is substantially free from motion artefacts and which contains only the information of a moving... | 09/26/1989 |
| 4870361 | Method and apparatus for carrying out a phase correction in MR angiography An MR angiography method in which an angiogram is formed from the difference between amplitude and/or phase information contained in first and second complex images produced by different gradient waveforms in respective first and second types of excitatio... | 09/26/1989 |
| 4868683 | Method of aligning objects by detecting a reference picture line therein which has an optically characteristic picture content In a method of aligning objects and in particular, of aligning optically readable disc-shaped information carrier. The objects are preferably optically scanned line-by-line in a direction transverse to their direction of movement. A reference picture line... | 09/19/1989 |
| 4868812 | Shared lines equipment, especially for B-ISDN switching system Large-scale time-division switching arrangements often consist of a central switching network and a series of so-called concentrators. For establishing an H1 switching a series of wideband concentrators are connected to a central wideband switching networ... | 09/19/1989 |
| 4868845 | X-ray apparatus with a movable part The invention relates to an X-ray apparatus with a motor-driven movable part. The drive takes place via a shaft, which is mounted in a bearing, the bearing forces of which are measured by a measuring device.... | 09/19/1989 |
| 4868503 | Magnetic resonance spectroscopy method The invention relates to a volume selective magnetic resonance spectroscopy method. Volume selection is performed after excitation by means of three layer-selective 180° rf pulses which excite the nuclear magnetization in three mutually perpendicular lay... | 09/19/1989 |
| 4868764 | Image encoding and decoding method and apparatus Pixel information representing an image for display is encoded using data compression into display data which can be stored on a compact disc. The data compression consists in obtaining the pixel information as a first matrix of high resolution pixel valu... | 09/19/1989 |
| 4866736 | Data transmission system comprising a decision feedback equalizer and using partial-response techniques A system for transmitting an n-level data signal (dk) at a given symbol rate 1/T comprises a data transmitter (1), a transmission channel (2) and a data receiver (3) with an equalizer (30) of the decision feedback type. By arranging this equali... | 09/12/1989 |
| 4866715 | Method of testing a modified booth multiplier, modified booth multiplier suitable for testing by means of this method, and integrated circuit comprising such a modified booth multiplier A modified Booth multiplier for multiplying an m-bit number X by an n-bit number Y comprises a Booth encoder for converter the number Y in groups of 3 bits which overlap by 1 bit into a series Y' of multiplication values whose number is equal to or substa... | 09/12/1989 |
| 4866751 | Radiological device of the pivoting type Radiological device of the pivoting type, comprising a fixed base (1), a longitudinal pivoting carriage (2) mounted on the base (1) and carrying, on the one hand longitudinally, a patient support panel (8) connected to the carriage by a patient support pa... | 09/12/1989 |
| 4864648 | Method of transmitting a group at least two measured values through an optical transmission path A method of transmitting at least two measured values by means of light pulses which are passed by an optical transmitter through an optical transmission path to an optical receiver and whose relative separation in time is proportional to the measured val... | 09/05/1989 |
| 4864593 | Method of measuring plasma densities and temperatures An X-ray computed tomography (CT) scanner is used to measure the density of mercury plasma in an operating arc lamp.... | 09/05/1989 |
| 4864529 | Fast multiplier architecture A digital multiplier circuit which implements a modified multiplier algorithm in binary form and can be implemented as a very large scale integrated circuit. The modified algorithm replaces the large summation required in a typical shift-and-add digital m... | 09/05/1989 |
| 4862450 | Arrangement for cancelling a composite echo signal An arrangement for cancelling the composite echo signal formed by, for example, a linear component and a variable-phase component, comprises a linear echo canceller and a variable phase echo canceller, the difference circuits of these echo cancellers bein... | 08/29/1989 |
| 4862402 | Fast multiplierless architecture for general purpose VLSI FIR digital filters with minimized hardware A digital transversal filter which employs a multiplierless algorithm for effecting convolutions of samples of a digital input word by the filter coefficients. Each of the samples of an input word is bit sliced into segments of two or more bits, and convo... | 08/29/1989 |
| 4862083 | Magnetic resonance examination apparatus and method of operation thereof The invention relates to a method of generating a selective 180° rf pulse is formed by means of two selective 90° rf pulses. Halfway between the two rf pulses there is generated a non-selective 180° rf pulse which ensures that the excited nuclear magne... | 08/29/1989 |
| 4862356 | Method and device for sorting objects provided with a parameter, according to the value of this parameter In sorting an input file on the basis of parameter values of the objects, monotonically varying chains of the objects are formed first. In an inspection phase these chains are selected from which the selection objects will be found as k firsts of the sele... | 08/29/1989 |
| 4860314 | Differential pulse code modulation arrangement, associated decoding arrangement and transmission system comprising at least such an encoding or decoding arrangement This encoding arrangement has an input (12) for receiving a sequence of samples to be encoded, an output for supplying encoded samples, processing circuits, more specifically: a differential circuit (20) for producing differential samples between the samp... | 08/22/1989 |
