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WO/1991/012689A1 |
The line blanking pulse is usually obtained from the horizontal flyback pulse with the aid of a comparator circuit and a predetermined threshold. If a line blanking pulse which acts early is to be obtained the threshold must be low. In t...
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WO/1991/011879A2 |
To avoid burn in a scanning cathode ray tube the address of the scanning spot at each clock period is recorded in a memory (30). During each frame period, the logarithms of the number of occurrences of each address are fed to a peak dete...
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WO/1991/011733A1 |
A radar of particular use at close range has a CRT (3) that is scanned in a spiral fashion by applying phase quadrature sinusoidal signals to resonant deflection coils (31 and 32). A digitizer (43) converts the radar return signals to mu...
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WO/1991/011075A1 |
According to the invention, the device for carrying out the process comprises on the one hand, a processor (2) connected by a data line (12) to a correction memory (3), a measuring circuit (9), and to a digital/analog converter (4), and ...
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WO/1991/010317A1 |
A first transformer is coupled to a deflection yoke and coupled to a derived secondary voltage source for driving a load, for example, for generating an ultor voltage. An on/off switch is responsive to an on/off signal. A second transfor...
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WO/1991/010315A1 |
A telecine can be adapted to write video signals onto film. The film gate and flying spot scanner (12) are enclosed in a light tight shield (30) and an R, G, B clear, colour filter wheel (134) is interposed in the optical path (34) betwe...
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WO/1991/010318A1 |
It is known to supply a test signal periodically to the deflector circuit, to compare the test deflection current (iT) flowing in the deflector circuit with a reference value (Uref) in a comparator (7) and to use the resultant signal (Us...
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WO/1991/010319A1 |
Amplifiers with a tuned output transformer are used to correct gull-wing errors in colour television sets. The correcting current consists of two cosine oscillations per line period. After the correction of this error there is still a re...
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WO/1991/009395A1 |
In a circuit arrangement for controlling a liquid crystal display device with pixels in a grid array, in which video signals (R, G, B) and horizontal and vertical frequency synchronous pulses (H, V) can be supplied to an integrated contr...
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WO/1991/009491A1 |
It is known, besides the actual image, also to set up a grid model with intersections for which the raster corrections are found and stored. The purpose is to provide a process for adjustment which ensures a properly centred position of ...
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WO/1991/007047A1 |
A device stabilizes the width, height and position of a picture displayed on a picture area (1) of a TV set. The amplitude of the deflection in the horizontal and/or vertical direction is stabilized by adjusting a deflection parameter to...
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WO/1991/007048A2 |
A device is useful for automatically adjusting a deflection grid on a picture area. A beam of light from the deflection grid falls onto a light sensor (3) arranged on the picture surface (1). In order to obtain a simple sensor unit (3) w...
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WO/1991/007051A1 |
With certain picture formats, for example, presentation of 16:9 picture on a 4:3 screen, the cut off signals for the dark radiation current regulation inserted into the video signal can become visible in the black bands. The task is to a...
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WO/1991/006177A1 |
The light beam is positioned by means of a light sensor (2) which is arranged on or near the picture area (1) and on which the light beam falls. The aim is to eliminate the influence of any extraneous light falling on the light sensor an...
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WO/1991/006181A1 |
A weave correction system for the transfer of film to video or video to film operable in real time is disclosed. The digital real time registration weave correction system (10) includes: a high powered deflection system and low inductanc...
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WO/1991/006176A1 |
It is known for grid correction, e.g. convergence correction, to measure and store correction values for certain pixels. The aim is to reduce the amount of storage for different operating modes with divergent correction values. For each ...
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WO/1991/005433A1 |
A saw-tooth wave signal is fed to a non-inverted input terminal of a first power amplifier that constitutes a first negative feedback amplifier. A deflection coil is connected at its one end to the output terminal of the first power ampl...
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WO/1991/004498A1 |
The design and testing of integrated circuits in wafer form for production faults, in the absence of irradiation, is described. This is achieved by fabricating test circuits (16, 20) on each wafer at the periphery of the sensor array. In...
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WO/1991/004638A1 |
To verify and correct deflection parameters, in particular convergence, a grid pattern is formed on the picture area (11). The points of intersection of the grid pattern are marked with a cursor (C) in order to verify the parameter and d...
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WO/1991/003131A2 |
A convergence control system for multiple vertical modes or formats, having respective rasters with different vertical heights, comprises a selector (4) for initiating operation in one of the available vertical modes, and a circuit (40) ...
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WO/1991/003130A1 |
A convergence control system for a televison apparatus, for example a projection television, comprises: a plurality of channels (40), each channel having a digital memory (46) for storing a set of grid coordinate values defining a conver...
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WO/1991/003129A1 |
In order to correct a scanning pattern, in particular as regards convergence, correction values for the crossing points in the scanning pattern are stored in a memory. The aim of the invention is to provide a simple circuit for interpola...
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WO/1991/001595A1 |
Multiple clock synthesizer comprising: (a) an oscillator means (10) for providing a train of pulses corresponding to a base signal; (b) a plurality of delay means (16A-16D) coupled to said oscillator means (10) each providing a different...
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WO/1990/012388A1 |
The perpection of grayscale shading on a digitally commanded display (12) is produced by commanding pixels (12a) of the display with brightness-setting signals (0/17, 1/17, 2/17, ...17/17) of differing average duty cycles. The energizati...
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WO/1990/007720A1 |
Device and research process used in conjunction with an electro-optical sensor not requiring an integrated scanning system to explore the objective hemispherical space in order to find and localise potential targets. Said device includes...
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WO/1990/007842A2 |
A signal produced by a telecine suffers from losses and defects caused by difference in response to incident light of different areas of the screen area scanned. These differences may arise from burning of the screen, blemishes, dirt in ...
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WO/1990/005424A1 |
A description is given of an opto-electronic colour image converter with an imaging system which images an object on a two-dimensional CCD array, whose matrix of photosensitive sensors has a colour filter mask to record images with at le...
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WO/1990/003079A1 |
Said process is suitable in particular for television receivers with a high sound output. The circuits of the television receiver are fed with supply voltages which are stabilized through a mains supply unit and the pillow distortion of ...
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WO/1990/003023A1 |
A controller (6) for providing O to N gray scales at a monochrome display (16). The controller (6) generates a baseline time to provide gray scales at the display (16). In particular, each pixel is energized at least the baseline time fo...
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WO/1990/001846A1 |
In order to obtain the analog switching action of a one-dimensional image sensor, a scanning circuit device comprises a voltage source (1) that supplies a saw-tooth wave, a plurality of first diodes (Da1 to Da3), second diodes (Db1 to Db...
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WO/1990/001688A1 |
A device for detecting convective states occurring on wind tunnel models (2) in current boundary layers, in particular at cryogenic temperatures, has at least one camera (3), which scans the model from the outside, thereby sensing the te...
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WO/1989/010038A1 |
A device for reproducing information comprises a receiving-amplifying unit (1) connected to a source (2) of the information signal, generators for line (3) and frame (4) scanning, a converter (5) of the signal into a reproduced image con...
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WO/1989/008365A1 |
In a flying spot telecine including cathode ray tube scaning means for generating flying spot and a photodetector for receiving light transmitted by a film strip being scanned by the telecine, control means are provided for causing the C...
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WO/1989/007378A1 |
An improved method is disclosed for transferring motion pictures from film (4) to videotape (8), with an improved video image quality for moving objects. In the preferred embodiment, the motion picture is filmed at twice the video frame ...
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WO/1989/006890A1 |
Apparatus (10) for positioning film media (30, 50) in alignment with video imaging means includes frame means having a window (28), primary gate means (12) mounted on the frame means for holding film media in a first plane, secondary gat...
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WO/1989/005554A1 |
A reference target pattern (10) is formed on a film (12) to be scanned by a telecine. The target pattern (10) occupies a predetermined position on the film relative to at least one image frame (14) so that by detecting the target pattern...
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WO/1989/005081A1 |
A phase adjusting circuit for forming false synchronizing signals by changing the phase of the synchronizing signal in order to place the picture at the center of the screen on a display unit. This circuit includes a voltage comparator (...
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WO/1989/004505A1 |
A liquid crystal display is described that includes gray scale capability. Each pixel of the display is subdivided into a plurality of subpixels (77-80). Each subpixel has coupled thereto a thin film transistor (73-76), the thin film tra...
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WO/1989/004530A1 |
A display device, e.g. for sports stadium or airport, consists of a large array of individual 'pixels' representing single dots of a large display. Each 'pixel' or display element consists of a number of sets of different coloured vanes,...
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WO/1989/003154A1 |
Circuitry is disclosed for linearizing the image reproduction by cathode ray tubes. During symmetrical line deflection, hyteresis can cause line by line shifting, so that there is no synchronization with the image content. To eliminate t...
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WO/1989/001267A1 |
An image scanner is disclosed which utilizes a dither plate (30, 32) to steer an image onto a sparsely-populated image sensor (24, 26, 28) in order to effectively fill in the gaps between photosites. A DC motor (34, 36), which is respons...
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WO/1988/007799A1 |
Line scanning system for a picture tube. When a line scanning system with symmetrical sweep is used, an asymmetricl course of the scanning beam (ia) during one line is formed. This deviation from the desired course must be corrected. The...
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WO/1988/004504A1 |
A television receiver has a micro-computer controlled operating part and a switching network part. A pulse generator is necessary for the micro-computer, for the switching network part and for scanning. The aim is to reduce the outlay. T...
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WO/1988/002974A1 |
A high definition television system compatible with existing standards. The imaging device (28) has a scan circuit (22) which causes subsampling by jump scanning a plurality of different scanning position variations of the standard imagi...
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WO/1988/001822A1 |
A film correction system adjusts a relative position of film containing an area for information and a scanner of the film area. The system includes a film area scanner (58) for scanning the film area at a film plane (136). A film drive m...
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WO/1988/001823A1 |
Geometric distortion in a scanning beam video laser projector, or the like, is corrected by comparing the time of arrival of the projection beam at a selected pixel on the projection screen with a predetermined time of arrival, and compu...
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WO/1988/001460A2 |
A driving circuit (30) generates multi-phase signals for operating the vertical charge-coupled registers (V1, V2...) of an interline-transfer image sensor (12). Though having full-frame still capability, the sensor (12) is included in a ...
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WO/1988/000411A1 |
Circuit as described, in which the current is obtained from a winding of the line output transformer, which winding is connected in series with a synchronized electronic switch, said circuit being provided with a series-connected integra...
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WO/1987/007808A1 |
A method of and a system for scanning a picture more densely in more detailed regions in order to provide more useful detail in a given amount of picture data. The picture is scanned by a movable interrogating element which is moved by d...
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WO/1987/007066A1 |
A light reflective display element comprises sets (10, 20, 30, 40) of vanes of which corresponding vanes, e.g. the group (12, 22, 32, 42), have the same colour, at least one of the groups being slidable by a rod (110) between positions i...
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