baber/WOPTO huggingface dataset:
Patent EP-0352740-A3 (EP)
IPC: H01L21/3065
Filed: 1989-07-25
Abstract: A laser end point detector incorporating adjustable-­
focus, variable-orientation detection optics for 
monitoring different types of structures such as 
laser-transparent thin films, isolated trenches or 
holes and patterned arrays of trenches or holes. A 
collector lens package comprising a laser and a 
focusing lens are mounted in a hole in a collector 
lens which is pivotally mounted for selectively 
focusing zero, first and higher orders of 
diffractions reflected from the wafer onto an 
associated detector to monitor the etching of 
different types of structures. For example, zero 
order diffraction signals are used to monitor the 
etching of large target areas in transparent thin 
films or of non-patterned trenches of holes. First 
order (or higher) diffraction signals are used for 
monitoring the etching of patterned features which 
effect a two-dimensional diffraction grating, such as 
the capacitor holes in dynamic random access 
memories.
Patent EP-0370252-A3 (EP)
IPC: H04B10/564
Filed: 1989-10-24
Abstract: An optical communication system of the optical feed 
forward type in which a main optical signal (501) and a 
distortion signal (502) are transmitted by a common 
optical fiber line (22) from the transmission part to the 
reception part.
Patent EP-0373523-A3 (EP)
Title: Methods and circuits for synchronizing signals in a modular redundant fault tolerant computer system
IPC: G06F1/12
Filed: 1989-12-08
Abstract: A fault tolerant circuit and method of synchronizing multiple asynchronous input 
signals, such as reset signals, in a modular redundant fault-tolerant computer 
system in which clock signals for respective slices have a bounded skew with 
respect to one another. The input signal and clock signal for each slice of the 
system are used to produce an initial synchronization signal in each slice of a 
first layer of the circuit. Each initial synchronization signal is used with an 
inverted version of each of the slice clock signals to produce, in each slice of a 
second layer of the circuit, a set of local synchronization signals for each slice. 
The local synchronization signals for each slice are passed to a majority-voter 
which produces a voted output signal for the slice. The voted output signal and 
the clock signal for each slice are then used to produce a finally synchronized 
output signal for that slice. The output signals for the multiple slices are 
synchronized to the respectively associated slice clock signals, and to one another 
within the bounded skew of the slice clock signals.
Patent EP-0368381-A3 (EP)
Title: Hydrogenation process
IPC: C08F8/04
Filed: 1989-10-24
Abstract: A process for selectively hydrogenating a polymer containing 
ethylenic unsaturation and cyano groups with a catalyst prepared by 
combining one or more of certain palladium compounds and one or 
more aluminum compounds in a suitable solvent or diluent. The 
hydrogenation is accomplished in a suitable solvent for the 
polymer.
Patent EP-0375006-A3 (EP)
IPC: A23L11/00
Filed: 1989-12-06
Abstract: A snack product which pops and expands upon heating with microwaves consists of a solid, partially cooked, poppable and expandable core (moisture content of 12-16 wt.%) comprising pregelatinized and/or native tapioca starch, which core is provided with an adherent, poppable, non-expandable coating of cooked dough, which preferably comprises black gram or urid flour.
Patent EP-0325421-A3 (EP)
Title: Organization of an integrated cache unit for flexible usage in supporting multiprocessor operations
IPC: G06F12/10
Filed: 1989-01-18
Abstract: Methods and apparatus are disclosed for realizing an integrated cache unit which may be used to flexibly implement a plurality of multiprocessor support schemes. The preferred embodiment of the invention comprises both a cache memory and a cache controller on a single chip and is programmable. The flexible implementation of the support schemes is achieved, according to the preferred embodiment of the invention, by providing for the setting of internal ICU option bits in on-chip special registers. The setting of these bits translates into the selection of a desired support scheme. The bits may be set under software control and allows a high performance multiprocessor cache system to be designed with few parts, at low cost and with the ability to perform with high efficiency.
Patent EP-0341959-A3 (EP)
IPC: G05D23/24
Filed: 1989-05-08
Abstract: A method and apparatus for controlling operation 
of a heating system (particularly a central heating system) 
including a boiler directly heating and passing water to a 
pipe network provides for sensing the temperature of the 
pipe network at a position therein remote from the boiler 
and controlling operation of the boiler in accordance with 
that sensed temperature.  
     The apparatus includes switch means (42') (operational 
amplifiers or comparators) - responsive to a voltage output 
by a device including a transducer (132) sensing the temperature 
of the pipe network and - operable to allow the boiler to 
fire until the sensed temperature reaches a first level and 
then prevent the boiler firing until the sensed temperature 
falls below a second level less than the first.  
     The two temperature levels may be varied, and the 
second level may be varied in dependence upon an ambient 
temperature remote from an area being heated.  
     An SCR is provided controlling operation of a 
relay in the power supply to a fuel control valve for the 
boiler - the SCR being controlled in response to the 
difference between the voltage output of the temperature 
sensor and a reference voltage.  
     Operation of the relay may be further controlled 
by a transistor itself controlled in response to the 
difference between the voltage output of the temperature 
sensor and a reference voltage.  
     The apparatus may include an LED illuminated when 
the boiler is disabled so as to provide an indication 
thereof.  
     Temperature sensing may be effected by a 
thermistor or a transducer which passes a current 
proportional to the temperature thereof and which is 
connected in series with resistor.
Patent EP-0345986-A3 (EP)
Title: Improved data demodulation system
IPC: G06F3/05
Filed: 1989-05-30
Abstract: A data demodulator assigns a binary value to the signal 
recorded in a transition cell based on the amplitude of the 
signal in the transition cell, the amplitudes of the signal in 
adjacent transition cells and system experience in 
categorizing how recording non-linearities and system noise 
effect the signals. The recorded analog signal in the 
transition cell for which a binary value is to be determined, 
and the recorded analog signal in a selected number of 
transition cells adjacent to that cell are each sampled a 
selected number of times. The amplitude of each of the signal 
samples is then converted to a digital signal symbol. 
Portions of the digital signal symbol are concatenated to form 
an interpretation vector. The vector is then used to enter a 
stored look-up table, addressing a particular memory location, 
and the binary value stored in that location is assigned to 
the transition cell. The look-up table is created based on 
system experience and the demodulating of known signals. The 
assigned values for a number of cells may be combined to form 
a code word which may be decoded using soft decoding 
techniques. Thus corrections may be made to the estimate 
assigned to a particular cell using parody checks or other 
known decoding techniques.
Patent EP-0345049-A3 (EP)
Title: Thermal imaging device
IPC: H04N5/33
Filed: 1989-05-31
Abstract: A pyroelectric film 21 has a pattern of interconnected electrodes 22 formed on one major surface, and a pattern of discrete electrodes 23 and electrically conductive patches 24 formed on the other major surface. The film 21 is supported by pillars 26 connected to the patches 24, the pillars also producing a path for electrical signals between the patches 24 and a signal processing means 28. Each discrete electrode 23 is connected to a respective patch 24 by a respective strip of electrically conductive material.
Patent EP-0363073-A3 (EP)
IPC: H02P6/18
Filed: 1989-09-27
Abstract: An n-phase, m-pole (wherein n and m are integers) 
brushless motor is driven without use of physical rotary 
position detectors, such as Hall elements or the like. An 
harmonic component of back emf induced in the phases of the 
motor is detected and used to generate phase energizing 
signals (such as in response to zero crossings of the 
detected harmonic component) which, in turn, energize 
selected phases of the motor. Drive current is supplied to 
those phases which are energized by the phase energizing 
signal in predetermined sequence.
Patent EP-0370654-A3 (EP)
Title: Video imaging methods and apparatus
IPC: G06F3/153
Filed: 1989-11-06
Abstract: A video imaging system suitable for display of CT cine 
images stored in a hybridized memory includes both a dynamic random 
access memory (14) and video random access memory (16), the latter 
serving as a frame buffer. A memory address space is allocated between 
the dynamic and video random access memories. A non-linear, chained 
direct memory access control (22) enables the system to write a series 
of raster scan images directly from the video random access memory for 
display. The chaining provides a means for skipping over unused 
addresses at the end of a display line, thus maximizing utilization of 
the video random access memory.
Patent EP-0373835-A3 (EP)
Title: Mass spectrometer and method with improved ion transmission
IPC: G01N27/62
Filed: 1989-12-08
Abstract: In a mass spectrometer system, ions travel 
through an orifice (26) in an inlet plate (28) into a first 
vacuum chamber (30) containing AC-only rods (32), and then 
through an orifice (34) into a second vacuum chamber (38) 
containing a standard quadrupole (40). The second vacuum 
chamber is held at low pressure, eg. .02 millitorr or less, 
but the product of the pressure in the first chamber times 
the length of the AC-only rods is held above 2.25 X 10⁻² 
torr cm, preferably between 6 X 10⁻² and 15 X 10⁻² torr cm, 
and the DC voltage between the inlet plate and the AC-only 
rods is kept low, eg. between 1 and 30 volts, preferably 
between 1 and 10 volts. This produces a large enhancement 
in ion signal, with less focussing aberration and better 
sensitivity at high masses, and also allows the use of 
smaller, cheaper pumps so the system can be more easily 
transportable.
Patent EP-0377335-A3 (EP)
Title: Decoding biphase-coded data
IPC: H03M5/12
Filed: 1989-12-29
Abstract: There is provided a system for decoding a digital code 
and in particular a biphase-coded data, by detecting edges 
of the biphase-code data and the time intervals between 
edge conditions. A system for decoding the biphase-code 
data includes a microcomputer 1 to control the system, a 
remote receiver module (RRM) 3 for logicizing code data 
received in infrared rays, filtering the waveform, and 
applying the output to the microcomputer 1; a first remote 
transmitter (RTTP) 5 for generating Pulse Position 
Modulation (PPM) code; a second remote transmitter (RTTB) 
7 for generating biphase-code according to the pressing of 
a key; a tuner 9, display unit 11, and servo 13 operated 
under the control of the microcomputer 1; and a key matrix 
15 for entering key data to the microcomputer 1.
Patent EP-0347332-A3 (EP)
IPC: H01L21/82
Filed: 1989-06-16
Abstract: A method of forming a semiconductor integrated 
circuit using a master slice approach includes the steps 
of: forming a plurality of transistor regions (TR) with 
units of a predetermined number in array on a 
semiconductor chip; forming a plurality of first 
wirings (LA) extending in parallel at a space 
therebetween with units of a predetermined length in a 
discontinuous form so that the first wirings pass 
through regions corresponding to the transistor 
regions; forming first contact holes (NA) at 
predetermined positions so that gate regions (G) and 
source/drain regions (S/D) of the transistor regions 
are connected to the first wirings; forming a plurality 
of second wirings (LB) having same forms as the 
plurality of first wirings so that the second wirings 
constitute a mesh-like arrangement in combination with 
the first wirings; and forming second contact holes 
(NB) using a pattern mask programmable in accordance 
with demanded conditions of a given circuit so that the 
second contact holes connect the second wirings to the 
first wirings. By changing only the form of the 
disposition of the second contact holes, it is possible 
to simplify an entire process to greatly reduce a 
turnaround time and make an improvement in yield.
Patent EP-0369986-A3 (EP)
IPC: H04N1/113
Filed: 1989-11-14
Abstract: Autofocus apparatus for use in an optical 
system utilizing a recording medium (20) formed from a 
birefringent medium (21) and a radiation-sensitive medium (22). 
The autofocus apparatus automatically focuses radiation 
through the birefringent medium and substantially at the 
interface (24) between the birefringent medium and the 
radiation-sensitive medium and includes a source of 
linearly polarized radiation (100, 110, 120, 130), 
a quarter-wave plate (150) to 
convert the linearly polarized radiation to circularly 
polarized radiation, and an actuator (165) controlled lens (160) for 
focusing the radiation onto the recording medium, 
whereby radiation reflected from the first surface of 
the birefringent medium and the interface between the 
birefringent medium and the radiation-sensitive medium 
passes back through the lens and quarter-wave plate and 
is deflected by a beamsplitter (140) to a polarization 
detector (180). The polarization detector isolates 
polarization components which arise from reflection at 
the interface and the isolated polarization components 
impinge upon a detector (190). The detector provides a focus-error 
signal which is applied, in turn, to the actuator (165) 
to maintain focus.
Patent EP-0381036-A3 (EP)
Title: Electrophotographic photoreceptor
IPC: G03G5/08
Filed: 1990-01-24
Abstract: Disclosed is an electrophotographic photo­
receptor which is superior in sensitivity to light of 
longer wavelength region with good stability of the 
sensitivity and is suitable for formation of high quality 
color image by scanning exposure with laser beam. This 
photoreceptor comprises an electroconductive support and, 
provided thereon, a photosensitive layer containing a 
titanium dioxide sensitive to light of longer wavelengths 
which is obtained by treating the surface of titanium 
dioxide particles with a mineral acid and then supporting 
on the surface of the particles a cyanine dye sensitizer 
and a hydrophobic organic compound. The mineral acid 
is preferably hydrofluoric acid and the hydrophobic 
organic compound is preferably aromatic or aliphatic 
organic acid and acid anhydride thereof.
Patent EP-0384288-A3 (EP)
Title: Piperidine compounds and their preparation and use
IPC: A61P27/02
Filed: 1990-02-14
Abstract: The present invention relates to therapeutically active 
piperidine compounds, a method of preparing the same and 
to pharmaceutical compositions comprising the compounds. 
The novel compounds are useful as stimulants of the cogni­
tive function of the forebrain and hippocampus of mammals 
and especially in the treatment of Alzheimer's disease, 
severe painful conditions and glaucoma.
Patent EP-0394629-A3 (EP)
IPC: B05B7/04
Filed: 1990-02-16
Abstract: Die Erfindung betrifft eine Vorrichtung zur Zerstäubung 
von Flüssigkeit mit Hilfe von Gas oder für die 
Zerteilung von Gas in kleine Blasen mit Hilfe von 
Flüssigkeit, wobei das Gas und die Flüssigkeit in 
einer Mischkammer (3) zu einem Zwei-Phasen-Gemisch zusammengeführt 
und vermischt werden und die Zuströmgeschwindigkeiten 
und Volumenströme der einzelnen 
Phasen so gewählt sind, daß die Ausströmgeschwindigkeit 
des Zwei-Phasen-Gemisches gleich der charakteristischen 
Schallgeschwindigkeit ist. Wesentlich 
ist, daß zur Auftrechterhaltung des Mischungsverhältnisses 
der Austrittquerschnitt verstellbar ist.
Patent EP-0397976-A3 (EP)
IPC: B32B27/04
Filed: 1990-03-09
Abstract: A continuous method for the production of composite materials from epoxy resin laminates in a heated double-belt press is proposed. The prepregs used are binder-impregnated porous substrate materials, the binder consisting of an epoxy resin, a novolak based on bisphenol and 0.5 to 2.0 % by weight of imidazole. Curing is preferably effected at temperatures above 180 DEG C.
Patent EP-0396871-A3 (EP)
IPC: C09K23/28
Filed: 1990-03-12
Abstract: 1. Die Erfindung betrifft neue N-Alkylglykaminoverbindungen sowie 
ein Verfahren zur Herstellung und ihre Verwendung.  
         2.1 Die bekannten N-trisubstituierten Amphotenside weisen hinsicht­
lich der Löslichkeit sowie des Schaum- bzw. Benetzungsvermögens 
Nachteile auf.  
Die neuen N-Alkylglykaminoverbindungen sollen diese Nachteile 
nicht aufweisen.  
         2.2 Es werden hierzu die neuen N-Alkylglykaminoverbindungen der all­
gemeinen Formel IV C n H 2n+1 -NRCH₂COO⁻ X⁺ vorgeschlagen, die durch 
N-Carboxymethylierung Alkylglykaminen herstellbar sind.  
Diese neuen N-Alkylglykaminoverbindungen weisen hervorragende 
tensidische Eigenschaften auf; sie sind im schwach sauren bis 
neutralen Bereich amphoter und zeigen gute Wasserlöslichkeit.  
         2.3 Verwendung der neuen Alkylglykaminoverbindungen als Tensid.
Patent EP-0380283-A3 (EP)
Title: Magnetic disk file with wide servo head
IPC: G11B5/55
Filed: 1990-01-22
Abstract: A dedicated servo transducer head 12 for reading position 
information signals from servo information tracks 24 in a rigid magnetic 
disk file has a width spanning at least three servo information tracks 
in order to overcome problems in gain irregularity caused by abrupt 
phase jumps between tracks. An embodiment 
of the magnetic disk file includes a 
servo transducer head that varies in sensitivity across its width to 
avoid gain loss during incremental radial movement when edges of the 
servo head track overlie edge fringes.
Patent EP-0421882-A3 (EP)
Title: Process for preparing xylitol and products rich in xylitol
IPC: C12P7/02
Filed: 1990-10-04
Abstract: Process for manufacturing xylitol and xylitol-rich products, characterized in that it consists of: enzymatically isomerizing at M1 D-xylulose syrup into syrup containing D-xylose and D-xylulose then, without extracting the xylose, catalytically hydrogenating this syrup at M2, resulting thus in a xylitol-rich syrup, said xylitol-rich syrup being either dehydrated, or subjected to chromatographic processing or to a treatment of extraction by crystallization at M3.
Patent EP-0444488-A3 (EP)
Title: Polymer modified bitumen containing metal compounds
IPC: C08L95/00
Filed: 1991-02-16
Abstract: The invention describes polymer-modified, bituminous compositions containing from 0.5 to 20% by weight of polymer constituents, where from 20 to 100% by weight of the polymer additive is polyalkyl (meth)acrylate, which is built up in proportions of from 50 to 99.8% by weight of C6- to C28-alkyl (meth)acrylates and in proportions of from 0.2 to 20% by weight of polymerisable carboxylic acids and/or sulphonic acids and in proportions of from 0 to 49.8% by weight of further polymerisable compounds, in particular nitrogen compounds. The addition of reactive metal compounds gives bituminous mixtures having improved rebound resilience, for example of from > 50 to about 90%, with good low-temperature flexibility and high thermal stability.
Patent EP-0449227-A3 (EP)
Title: Sputtering apparatus
IPC: G11B7/26
Filed: 1991-03-26
Abstract: A sputtering apparatus of the present invention is used for manufacturing optical discs. On loading and unloading of disc substrates to and from a vacuum chamber (2), a disc entrance and exit opening (3) provided on the vacuum chamber is closed by a tray (11) having an opening (11b) at the center thereof on which the disc substrate is placed and a push up rod (12) having a closing side closing the opening of the tray on the lower side thereof. Sealing of the disc entrance and exit opening may be made positive and the vacuum chamber is uniformly evacuated so that an excellent sputtering can be performed. <IMAGE>
Patent EP-0463342-A3 (EP)
Title: Variable air filter for convection and ventilation air currents
IPC: F24F13/28
Filed: 1991-05-14
Abstract: A variable air filter system is described for convection and ventilation air flows, filter elements being introduced into the air flow in order to clean or purify the room air. To obtain an improved filtering effect, provision is made for filter elements to be disposed at a distance in front of or above the air-generating surface or the air-generating cross-section, the area of such filter elements being as large as or, if required, larger than the air-generating cross-section of the air-emitting surface. It is possible to provide the filter elements with the facility of enabling different inclination, form, overall depth, and length and height arrangement to be adjusted to the optimum value for filter efficiency in the air flow for cleaning.
Patent EP-0471973-A3 (EP)
Title: Thermoplastic compositions based on vinyl-aromatic graft copolymer and polyamide
IPC: C08L51/06
Filed: 1991-07-11
Abstract: Disclosed are thermoplastic compositions endowed with improved mechanical characteristics, and particularly an imporved impact resistance, especially when measured on test pieces of high thickness, comprising:   (A) an impact resistant vinyl-aromatic graft copolymer containing from 0.1 to 2% by weight of units of an ethylenically unsaturated monomer having a carboxylic group or a derivative thereof in its molecule; and   (B) a polyamide resin. n
Patent EP-0469531-A3 (EP)
Title: Liquid crystal apparatus and driving method therefor
IPC: G02F1/141
Filed: 1991-07-29
Abstract: A liquid crystal device is formed by a plurality of scanning electrodes, a plurality of data electrodes intersecting the scanning electrodes, and a bistable liquid crystal showing a first stable orientation state and a second stable orientation state disposed between the scanning electrodes and the data electrodes so as to form a pixel at each intersection of the scanning electrodes and the data electrodes. The liquid crystal device is driven according to a scheme wherein a pixel is written in a first orientation state (or at a gradation level k) in two steps including: a first step of applying a prescribed voltage for causing the second orientation state to the pixel and then applying a voltage of at least V1 (or a voltage Va) to the pixel, and a second step of applying a voltage of at least V2 (or a voltage Vb) to the pixel, wherein V1 (Va) denotes a threshold voltage required for converting a pixel in the second orientation state into the first orientation state (into the gradation level k) after applying the prescribed voltage for causing the second orientation state to the pixel in the first orientation state, and V2 (Vb) denotes a threshold voltage required for converting a pixel in the second orientation state into the first orientation state (into the gradation level k) after applying the prescribed voltage for causing the second orientation state to the pixel in the second orientation state. <IMAGE>
Patent EP-0486789-A3 (EP)
Title: A modular system for obtaining equipped walls and work-benches, in particular for use in laboratories
IPC: B25H1/12
Filed: 1991-09-25
Abstract: A modular system for erecting workbenches and equipped walls, in particular for use in laboratories, comprises a structure constructed of modular uprights and crosspieces to which beams can be fixed which permit supports for pieces of furniture, working tables, etc..., to be fitted in a slidable manner. Mounted to the wall are also panels including electrical connections, panels for fluid supply, etc.., which have all of the components entirely received inside the associated wall in a flush-relationship therewith. <IMAGE>