| Patent Number |
Title Of Patent |
Date Issued |
| 4754966 |
Circuit for forming objects in a video picture |
July 5, 1988 |
| A circuit for generating a plurality of moving or fixed objects on a video screen, more specifically for a video game. The circuit uses a topological memory 20 which represents the picture element by element, and an object memory 31 in which objects are defined by consecutive line segmen |
| 4754939 |
One way drive system for a recording and/or playback machine without free-wheeling drag |
July 5, 1988 |
| A one-way over-running clutch has drive rollers captured in tapering spaces between the driving and driven member, and a cage for guiding the rollers in the direction of tapering. To allow the driven member to be completely free wheeling in both directions when the driving member is stat |
| 4754469 |
Method for the determination of the spatial distribution of the scattering cross-sections for el |
June 28, 1988 |
| The invention relates to a method for determination of the cross-sections for elastic scattered radiation in which a polychromatic radiation source is used but in which good differentiation between various substances is still possible. |
| 4754348 |
Serial changer including a measuring device for determining the format of a cassette |
June 28, 1988 |
| A serial cassette changer in which the height and the width of a cassette in a cassette carriage are measured. The positions of two markers are controlled by levers which bear against the sides of the cassette, so that the angular positions of the markers are determined by the cassette |
| 4754311 |
Semiconductor device with contacts to parallel electrode strips |
June 28, 1988 |
| A semiconductor device is set forth comprising a number of parallel first electrodes (1) which are located on an insulating layer and are mutually separated by grooves with insulated walls, in which second electrodes (2) coplanar with the first electrodes (1) are provided. According to t |
| 4754310 |
High voltage semiconductor device |
June 28, 1988 |
| A field effect transistor, a bipolar transistor, a PIN diode, a Schottky rectifier or other high voltage semiconductor device comprise a semiconductor body having a depletion layer formed throughout a portion in at least a high voltage mode of operation of the device, such as, by rev |
| 4753822 |
Method of providing a bonding, electrically insulating layer, metal ribbon coated with such a la |
June 28, 1988 |
| The invention relates to a metal ribbon and a method of manufacturing same, in which a layer or track of magnesium oxide is provided on the metal ribbon by decomposition of magnesium alcoholate which is provided by means of a dosing system which is sealed from the air. A sinusoidal infor |
| 4753508 |
Optical coupling device |
June 28, 1988 |
| A coupling device for coupling an end of a light-conducting fiber to an optical transmitter device and an optical receiver device. The receiver device comprises a light-collecting element arranged opposite an end face of the fiber end. The receiver is provided with an opening. The tr |
| 4752768 |
Intruder detector with anti-obscuring means |
June 21, 1988 |
| An apparatus for detecting intruders comprising a housing provided with at least one window, a passive infrared detector (for detecting the radiation emitted by an intruder around a wavelength .lambda..sub.1), and an anti-obscuring device (detecting by infrared radiation having a wavelen |
| 4752715 |
Television camera tube |
June 21, 1988 |
| A television camera tube comprising an evacuated envelope enclosing an electron gun. The electron gun has, in the direction of propagation of the generated electron beam, a cathode, a grid, an anode and a cylindrical electrode. The cylindrical electrode has a diaphragm. The anode has a |
| 4752266 |
Method of manufacturing an electron tube envelope assembly with a precisely positioned window |
June 21, 1988 |
| An electron tube comprising a window having a radiation-sensitive layer. The window is laid on a bearing surface of an envelope, normal to the tube axis. There is no sealing material in the seam between the bearing surface and the window. The seam is sealed hermetically by a mass of indi |
| 4751148 |
Luminescent aluminoborate glass and luminescent screen provided with such a glass |
June 14, 1988 |
| Luminescent aluminoborate and/or aluminosilicate glass which is activated by one or more rare earth metals. The glass has a matrix comprising from 5 to 65 mol. % of one or more of the alkaline earth metal oxides BaO, SrO, CaO, ZnO and MgO, from 20 to 85 mol. % of B.sub.2 O.sub.3 and/or S |
| 4750803 |
Connector for optical fibres having a radial vent hole opening communicating with a surface duct |
June 14, 1988 |
| The invention relates to a connector for optical fibres, notably monomode fibres, which includes a receptacle which is accommodated in a housing sleeve. At least one connector pin is inserted into the receptacle. The connector pin is provided with a collar which is axially pressed agains |
| 4750196 |
Device for examining a body by means of gamma rays or X-rays |
June 7, 1988 |
| The invention relates to a device for examining a body by means of gamma rays or X-rays, in which a body to be examined is irradiated by a plurality of primary beams having a comparatively small cross-section. The scattered radiation produced is intercepted by detector devices, at least |
| 4749962 |
Clock-signal regenerator comprising a crystal oscillator incorporated in a phase-locked loop |
June 7, 1988 |
| The frequency of a voltage controlled crystal oscillator is conventional pulled by means of a varicap diode forming the load capacitance of the oscillator crystal. In order to realize a wider range of frequency pulling, the load capacitance 44 is alternately switched on and off in a |
| 4749854 |
Apparatus for the measurement of the stress birefringence of an optical sensor |
June 7, 1988 |
| Apparatus for measurement of the stress birefringence of an optical sensor that is influenced by a quantity to be measured. An optical emitting device sends light of two adjacent wavelengths .lambda..sub.1 and .lambda..sub.2 through an emitting light guide and via a polariser and a r |
| 4749849 |
Device for determining the position of a radiation beam |
June 7, 1988 |
| In a position-sensitive radiation detector having a semiconductor body which at least in the operating condition comprises a high-ohmic zone (11) between two radiation-sensitive diodes (6) provided with connection electrodes (9), a high-ohmic zone (11) between two semiconductor zones (6) |
| 4749659 |
Method of manufacturing an infrared-sensitive charge coupled device |
June 7, 1988 |
| A charge coupled device (CCD) sensitive to infrared radiation composed of a succession of three layers of Group III-V semiconductor material. The layers are a window layer, a sensitive layer and a storage layer. The layers are fixed to a supporting plate serving as input for the radiatio |
| 4749278 |
Arrangement for aligning a mask and a substrate relative to each other |
June 7, 1988 |
| An arrangement is described for aligning a mask (1) and a substrate (3) relative to each other by means of grating marks (M.sub.1, M.sub.2 ; P.sub.1, P.sub.2) in the mask and in the substrate. A diaphragm (32) is arranged in the path of the alignment beam (b') behind the mask grating |
| 4749163 |
Means for supporting the frame of a recording and/or reproducing apparatus on a positioning surf |
June 7, 1988 |
| A means for supporting the frame of a recording/reproducing apparatus on a positioning surface includes a plurality of supports of an elastic material. Each support is constructed as an elastic socket, an outer portion adjoining the bottom of the socket. At the bottom of the socket a |
| 4749119 |
Vacuum-tight thermocompression seal involving the formation of an oxide skin |
June 7, 1988 |
| For thermocompression sealing at least one of the materials to be joined is provided with an oxide skin before or during the sealing operation. The oxide skin can be formed, for example by firing in air. It has been found that the method is particularly advantageous for seals between a |
| 4748663 |
Loudspeaking telephone instrument |
May 31, 1988 |
| A loudspeaking telephone instrument comprises a transmit path comprising a microphone (1) and comb filter (2); a receive path comprising a comb filter (3), a frequency shifter (4) and a loudspeaker (5); and a hybrid circuit (6). The frequency shifter (4) shifts the frequency of a signal |
| 4748615 |
Digital TDM switching exchange wherein switching is effected by the read/write sequences of data |
May 31, 1988 |
| A central exchange comprising at its input end a change-over arrangement having a change-over switch for each input line and at its output end a change-over arrangement of an identical structure having a change-over switch for each output line, which are controlled in parallel. Each |
| 4748581 |
Digital root extraction circuit |
May 31, 1988 |
| A circuit for extracting the square root of a 2n-bit input binary number. The circuit comprises n successive subcircuits, the m.sup.th such subcircuit consisting of (m+1) add/subtract cells, where 1.gtoreq.m.ltoreq.n. The successive subcircuits process successively less significant p |
| 4748523 |
Magnetic-tape apparatus with combined tape and servo wheel drive |
May 31, 1988 |
| A magnetic-tape apparatus comprises at least one switching device comprising a servo wheel (77; 97) for switching an apparatus function. Further, the apparatus comprises two winding spindles (2, 3) whose lower end portions are each connected to a coaxial winding wheel (4, 5). A rever |
| 4748493 |
Diode and metal stud therefor |
May 31, 1988 |
| A diode according to the invention comprises an electrically insulating envelope (2), within which a wafer (1) of semiconductor material with a pn junction is enclosed between metal studs (3, 4). The metal studs (3, 4) are sintered bodies mainly comprising tungsten, a metallic sintering |
| 4748135 |
Method of manufacturing a semiconductor device by vapor phase deposition using multiple inlet fl |
May 31, 1988 |
| A method of manufacturing a semiconductor device including the step of depositing from the vapor layers on a substrate in the chamber of a reactor in which a vector gas and a reactant gas are introduced, characterized in that the vector gas and the reactant gas are introduced into th |
| 4747863 |
Method of manufacturing glass bodies |
May 31, 1988 |
| A method of manufacturing glass bodies, in which the starting material for the glass body, being monodispersed SiO.sub.2 particles (quartz-glass powder), is used to form an open-pore green body which is subjected to a purification process in which the impurities present in the green body |
| 4747862 |
Method of manufacturing a device for conducting quantized particles |
May 31, 1988 |
| A method is provided of manufacturing a device for conducting quantized particles such as photons and electrons. The method comprises the following steps:providing a layer of magnetizable material throughout the length of a conductor;dividing the conductor into conductor pieces having a |
| 4747647 |
Optical scanning device |
May 31, 1988 |
| A scanning device is described which comprises a rotationally symmetrical rotating reflecting facet disc (3) in which a scanning beam (2, 2') is focussed on a face (5, 6) of the facet elements (4). The sensitivity of the device to surface defects or dust particles on the faces of the fac |
| 4747117 |
Device for determining local absorption values in a slice of a body, and an array of detectors f |
May 24, 1988 |
| An X-ray examining device for transversal tomography, comprising an array of detectors of mutually different dimensions. Each detector comprises one or more detector elements which operate electrically in parallel, either as a result of the direct parallel connection of the detector elem |
| 4746837 |
Color display tube deflection unit which corrects left-right raster distortion |
May 24, 1988 |
| A color display tube deflection unit having an annular magnetizable core of tapered cylindrical shape and a raster distortion correction device comprising four pole shoes positioned at the corners of a rectangle adjacent the end of the core facing the display screen, the pole shoes r |
| 4746836 |
Flat cathode ray display tube |
May 24, 1988 |
| A flat cathode ray display tube in which an electron beam (30) is directed firstly in a rear region (24) parallel to a faceplate (14) carrying a phosphor screen (16) and then reversed to travel in the opposite direction in a front region (22) before being deflected towards, and raster sc |
| 4746792 |
Optical transducer element and displacement meter comprising such an element |
May 24, 1988 |
| Displacement of an object is sensed by a transducer element having light first strips and dark second strips alternating in a direction of object displacement. The first strips are formed as phase gratings having grating lines extending in the direction of displacement and having a width |
| 4746345 |
Method of manufacturing solid glass preforms from hollow preforms |
May 24, 1988 |
| Solid glass preforms are made by externally heating a tubular preform by a plasma which is reciprocated along the hollow tube. The plasma gas consists entirely or partly of a molecular gas (N.sub.2 or O.sub.2, for example). The hollow preform is preferably rotated during collapsing. |
| 4746186 |
Integrated optical multiplexer/demultiplexer utilizing a plurality of blazed gratings |
May 24, 1988 |
| A planar reflecting grating is described which is suitable for use in an optical multiplexer or demultiplexer. This grating comprises a periodic structure of elongated areas which are formed at constant distances from each other in a thin light-conducting layer deposited on a substrate. |
| 4746182 |
Phase-matched magnetooptical mode converter |
May 24, 1988 |
| The invention relates to a magnetooptical waveguide device for the conversion of modes of propagation of the device. The device comprises layers (1, 4, 5, 6, 7) which are epitaxially applied to a substrate layer (8) and of which at least the waveguide layer (1) in which the modes pro |
| 4743990 |
Test cassette for measuring capstan azimuth angles |
May 10, 1988 |
| Azimuth angle of the capstan of a magnetic-tape-cassette apparatus is measured using a cassette having a reference sensor which engages the cassette, and at least one measurement sensor which engages the cassette at a location spaced axially from the reference sensor. The measurement |
| 4743986 |
Insertion-ejection mechanism in a magnetic tape-cassette apparatus |
May 10, 1988 |
| A cassette transport lever is engaged by a cassette being inserted into the apparatus, for movement of the lever to an operating position; and upon subsequent reverse movement of the lever for ejecting the cassette. Upon movement of the lever to the operating position the lever engages a |
| 4743858 |
R. F. power amplifier |
May 10, 1988 |
| An r.f. power amplifier, typically a high efficiency, class E amplifier in which a reactive load circuit (18) is connected to a semiconductor switching device (10), the load circuit being designed to have the required input load angle and loaded Q so that the voltage across the devic |
| 4743566 |
Method of manufacturing a semiconductor device, in which a silicon slice is locally provided wit |
May 10, 1988 |
| A method of manufacturing a semiconductor device, in which a silicon slice (1) is locally provided with field oxide (10, 30) with a subjacent channel stopper zone (12, 32), which are formed during the same oxidizing heat treatment. The formed field oxide layer (10, 30) is removed in part |
| 4742534 |
Telephone receiving equipment for recognizing predetermined combinations of voice-frequency sign |
May 3, 1988 |
| A telephone signalling receiver comprising speech detectors for respective voice-frequency signalling components of push-button (TDK) signals which are in a frequency band divided into lower and upper frequency subgroups. Each detector calculates the Discrete Fourier Transform (DFT) of t |
| 4742394 |
Camera for recording television, photographic or cinematographic images |
May 3, 1988 |
| A camera formed with a solid-state image sensor (FTD) comprising a pick-up member (I), a storage member (M) and a shift register member (SR) with three output shift registers (SR1, SR2, SR3). The picture signals (S1, S2, S3) originating from the output registers must be combined in a mon |
| 4742267 |
Cathode ray tubes provided with flexible connectors |
May 3, 1988 |
| A cathode ray tube has a thin flexible circuit (48) comprising one or more films of polyimide with a plurality of conductive tracks deposited directly thereon for establishing electrical connection between a multi-pin lead through (45) passing through the wall of the tube's envelope |
| 4741988 |
Patterned polyimide film, a photosensitive polyamide acid derivative and an electrophoretic imag |
May 3, 1988 |
| A method of manufacturing a polyimide pattern which is provided with a metal layer, such that a dual layer system is exposed in accordance with a certain pattern, which pattern contains a photosensitive polyamide acid derivative and a positive photoresist which is developed, provided wit |
| 4741986 |
High-resolution photosensitive composition which can be developed by plasma and a photolithograp |
May 3, 1988 |
| A high-resolution photosensitive composition which can be plasma-developed, including an acrylic polymer and a photosensitive compound, of the aromatic azide group, in which the polymer contains, in a side chain, at least one aromatic nucleus where at least one chlorine atom (Cl) has |
| 4741596 |
Optical glass fibre having a synthetic resin coating and method of manufacturing same |
May 3, 1988 |
| The invention provides an optical glass fibre having a synthetic resin coating and a method of manufacturing same, the first layer of the synthetic resin coating being formed from a curable polyether urethane acrylate composition.The glass transition temperature of the synthetic rubber f |
| 4741049 |
Automatic channel selecting system using shared duplex channels |
April 26, 1988 |
| A plurality of duplex channel pairs are shared by a number of stations having equal priority for calling other stations in the system. In resting condition, the station receiver section scans channels allocated to this station's use, in a search to identify transmission by a calling stat |
| 4741027 |
Transmission path selection circuit in a telecommunication network |
April 26, 1988 |
| In military telecommunication networks a functional dialling number diagram is used independent from the network configuration. As the network structure in a military telecommunication network constantly changes and the subscriber can move to a different address at any moment, it is |
| 4741011 |
X-ray tube comprising an anode disc which is at least partly made of pyrolytic graphite |
April 26, 1988 |
| A basic body for an anode disc is provided with laminations which are situated at a short distance from one another. Pyrolytic graphite is provided in the narrow intermediate spaces between the laminations by deposition of carbon from the gaseous state. Because of the small distances |
