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WO/1993/006688A1 |
Circuit arrangement for generating a horizontal deflection frequency modulation voltage with a parabolic time cycle for the appropriate modulation of the focussing voltage in devices with a picture tube, especially television sets. As in...
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WO/1993/005575A1 |
If a vertical deflection circuit with an IC of the TDA 8178FS or TDA 8179FS type is to be operated at an increased deflection frequency of 100 Hz and a reduced return time, the operating voltage must be increased, thus raising the power ...
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WO/1993/005609A1 |
A dynamic distortion correction apparatus (100) for use in an image projector (120). The invention includes a computer image generator (144) for generating a video image signal. A control circuit (102) processes the video image signal an...
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WO/1993/005610A1 |
In television sets having different operating modes with screen overlay, the focussing voltage is effective only during part of the deflection period. The maximum amplitude and arithmetic mean of the dynamic focussing voltage (UF) must b...
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WO/1993/004456A1 |
An improved system for continuously detecting and correcting the display in a cathode ray tube for errors in size and linearity. The system employs a crystal oscillator (19) as a reference frequency to determine absolute error which is r...
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WO/1993/000765A1 |
A stabilized high voltage power supply circuit for a cathode-ray tube using electromagnetic deflection. The secondary coil of a transformer for high voltage controlling is connected with the primary coil of a flyback transformer. Further...
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WO/1993/000576A1 |
A device for sensing a thermal image which has a group of plural pyroelectric type heat sensing elements (5) arranged on a line, an optical system (6), a structure (7) for making the pyroelectric type heat sensing element group (5) and t...
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WO/1992/022167A1 |
A vertical deflection circuit of a cathode ray tube (CRT) using electromagnetic deflection, wherein a vertical output transistor which operates while the vertical deflection current flows forward and a transistor boosting up the vertical...
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WO/1992/020185A1 |
The aim of the invention is to provide a simple circuit which has dynamically stable operation and has no tendency to oscillate. A PWM modulator (12) controlled by the high voltage actuates a switch (15) lying between a negative operatin...
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WO/1992/018972A1 |
A method is disclosed for driving varistor-switched liquid crystal displays, particularly those formed of NCAP LC cells (10), by means of which the cells can be switched "on" without cross-talk and can be rapidly switched "off" at video ...
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WO/1992/015257A1 |
An implant (20) comprising a specially adapted bone screw having a threaded shank portion (22) and a sleeve (42) which mates with and operates in cooperation with the threaded shank portion (22) is provided. Also provided is a driver (60...
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WO/1992/012595A1 |
In connection with HDTV and 16:9 image transmission there are special operating modes in which the vertical scanning amplitude in the overscanning sense is so great that only a part of the vertical scanning time signal covers the full im...
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WO/1992/006398A1 |
The invention relates to a camera which may be used as a projector by scanning the axis of observation or projection of optical fibers (1), of light sources such as lasers, or photonic sensors, scanning by motion of the latter, or reflec...
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WO/1992/006560A1 |
An otpo-electronic camera for producing high-resolution electronic images, comprising an object lens which forms an image in an image plane (13), a shadow mask (1) lying in the image plane and having a regular hole structure (2), where t...
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WO/1992/005670A1 |
In order to evaluate and to correct deflection raster parameters, it is known to reproduce a grid pattern (SH, SV) on the picture area (1). In order to ensure an automatic evaluation and determination of the correction values of each par...
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WO/1992/005661A1 |
Large format TV tubes must produce a high peak brightness in order to be acceptable to the user. This results in a large beam current in bright areas of the picture and in a subsequent defocussing of the resulting spot on the display and...
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WO/1992/004733A1 |
A camera chip for a camera detecting and evaluating point phenomena, consisting of light-sensitive components (10) in at least one line, an extreme value detector (12, 13, 14) with parallel inputs for the output signals of the light-sens...
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WO/1992/003886A1 |
The present invention is a system that includes a quadrant detector with an axis between the detector elements aligned with the direction of film motion. The output of the detector is used by an analog signal processor composed of adders...
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WO/1992/003014A1 |
A film scanner is disclosed which comprises a dynamic film gate (11). The film gate (11) includes a pair of capstans (12) for supporting the film (16) at an imaging station (18) and a pair of belts (20) which clamp the film (16) against ...
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WO/1992/003012A1 |
A film scanner is disclosed which comprises a dynamic film gate (11). The film gate (11) includes a pair of rollers (12) for supporting the film (16) at an imaging station (18) and a pair of drive belts (20) which clamp the film (16) aga...
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WO/1992/003013A1 |
A film scanner is disclosed which comprises a dynamic film gate (11). The film gate (11) includes a pair of capstans (12) for supporting the film (16) at an imaging station (18) and a pair of belts (20) which clamp the film against the c...
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WO/1992/003016A1 |
A panning camera (7) comprises a charge-transfer photodetector system (12), an optical system (11) for focussing on a field of view, and a rotational drive mechanism (17) for the vertical support shaft of the assembly. The panning camera...
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WO/1992/002032A1 |
A deflection apparatus comprising a cathode ray tube produces a field gradient that reduces a tendency of a major axis of a beam spot to become elongated at each corner, at each end of a horizontal axis and at each end of a vertical axis...
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WO/1992/002071A2 |
An adaptive dual range analog to digital converter particularly adaptive for use with film scanners employs a set-up parameter input arrangement for receiving externally generated control signals for adjusting the digital quantization st...
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WO/1992/001354A1 |
Vertical deflection circuitry for substantially eliminating rolling and bouncing in a video monitor, where for example, the video monitor (260) successively displays images produced by each of one of a plurality on non-synchronized video...
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WO/1991/019377A1 |
A thermal imager is described comprising an invertible Galilean telescope (10), a Keplerian telescope (12) incorporating image de-rotating means (14), a scanning mirror (16) and image detecting means (60). The imager is of compact form a...
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WO/1991/019397A1 |
A video display system comprises a first video signal source (304) of a first picture and a second video signal source of a second picture. A first signal processor (304) speeds up the first video signal. The second video signal (306) is...
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WO/1991/019393A1 |
A two stage interpolation system provides greater bandwidth for signals compressed and expanded by interpolation, such as video signals displayed in a zoom or enlarged mode. A finite impulse response filter (391) generates from a first s...
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WO/1991/019386A1 |
A picture overlay system assures proper size and placement of picture overlays in simultaneous picture displays. The system comprises a video memory (350, 356, 358) and a control circuit (300) for writing and reading information from a v...
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WO/1991/019399A1 |
Video luminance data from a video signal is selectably compressed and expanded in a first signal path including a first line memory (356). A second line memory (358) in a parallel signal path processes video chrominance data from the vid...
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WO/1991/019380A1 |
The perceived quality of a dithered or dithered/dedithered video signal can be improved under some circumstances by skewing the dither sequence. The dither sequence, whether a 1-bit or 2-bit sequence, repeats continuously on a given line...
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WO/1991/019388A1 |
A video display has a first format display ratio. A mapping circuit maps an adjustable picture display area on the video display. A signal processor generates first and second video signals from input video signals having one of differen...
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WO/1991/019400A1 |
A dither signal is added to an n-bit video signal. The adder (376) should include a limiter to avoid overflows. The samples are truncated after the addition. The least significant two bits are simply discarded. A dither signal which can ...
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WO/1991/019385A1 |
First and second field type detectors (702, 710) for first and second video signals have outputs indicating whether the video signals have first or second field types. The first video signal is synchronized with the second video signal f...
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WO/1991/019381A1 |
A line memory and control system comprises a line memory (356, 358) for example a first in first out (FIFO) device. A comparator (1102) compares a first value (P), specifying a location in the horizontal line period where reading or writ...
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WO/1991/019394A1 |
A circuit for compressing and expanding video data comprises a FIFO line memory (356) and an interpolator (337). A timing circuit (339) generates control signals for writing data into the line memory (356) and for reading data from the l...
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WO/1991/019384A1 |
A wide screen television apparatus comprises a video display (244) having a first format display ratio of width to height, for example approximately 16x9. A first video signal defines a first picture. A second video signal defines a seco...
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WO/1991/019387A1 |
A picture overlay system assures proper image aspect ratios for picture overlays. The system comprises a video memory (350, 356, 358) and a control unit (300) for writing and reading information from a video signal into and out of the vi...
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WO/1991/019401A1 |
Pixels are defined by points of intersection of a grid pattern consisting of horizontal and vertical lines. Corrections values, in particular for the convergence, are determined for these pixels and entered in memories. For operating mod...
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WO/1991/019398A1 |
A circuit for compressing and expanding video color component data comprises a FIFO line memory (358) and a delay circuit (540). A timing circuit (339) generates control signals for writing data in the line memory and for reading data fr...
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WO/1991/019395A1 |
A video display system comprises analog to digital converters (342, 346) for quantizing first and second video signals, representing first and second pictures respectively, at higher and lower levels of quantization resolution relative t...
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WO/1991/019378A1 |
A display system controls vertical zoom and panning. A video display has a first format display ratio. A circuit (30), for example one generating a raster, maps on the video display an adjustable picture display area represented in a vid...
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WO/1991/019379A1 |
A field synchronization system for asynchronous video signals, comprises a video display synchronized with a first video signal having a first line rate component and a first field rate component. A second video signal having a second li...
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WO/1991/019390A1 |
A video control system comprises a deflection system having a dimensionally adjustable raster, a circuit (1032) for detecting a letterbox video signal source and a circuit (50) for dimensionally controlling the raster of the deflection s...
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WO/1991/019396A1 |
A projection system for colour picture projection has at least one light source, light modulators and a suitable mirror and lens system. As the projection system according to the invention makes it possible to reduce the distance between...
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WO/1991/018410A1 |
A self converging, widescreen color picture tube system includes a widescreen, in-line color picture tube having a funnel, an electron gun assembly (28) for three in-line electron beams located in a neck at one end of the picture tube, a...
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WO/1991/015057A1 |
Modern vertical deflectional connections are constructed with amplifiers in D mode in which a pulse width modulator activates the electronic switches with line frequency width-modulated pulses. The pulse width is controlled by an error a...
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WO/1991/015081A1 |
A circuit (12) for receiving a video signal with a horizontal synchronizing component (on 11) at a horizontal scanning frequency generates an intermediate synchronizing signal (on 47) synchronized with the horizontal synchronizing compon...
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WO/1991/015080A1 |
An automatic beam current limiting arrangement of a television receiver or display monitor comprises an average beam current limiter (70a) coupled to the low side of the high voltage transformer (50) for reducing the contrast of a reprod...
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WO/1991/012687A1 |
An infrared imaging system including a fixed magnification telescope, a two-axis variable angle scanner, a plurality of differently-sized infrared detectors positioned in the focal plane of the scanner, a selector to choose an output sig...
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