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| Number | Title | Issue Date |
| 8018749 | Synchronous rectifier The disclosed embodiments relate to apparatus and method for reducing power losses in a power supply. There is provided an apparatus comprising means for coupling a first signal (S2) to a reference level (ground) when the coupling means is conductive, mea... | 09/13/2011 |
| 7973801 | Method and device for processing video data for display on a display device A method for processing video data for display on a display device having a plurality of luminous elements comprising: applying a dithering function based on single ones of said luminous elements to at least part of said video data to refine the grey scale portrayal... | 07/05/2011 |
| 7773161 | Method and apparatus for controlling a display device The invention deals with the large area flicker effect reduction in display devices like plasma display panels, in which the light output is controlled by small pulses over a whole frame period and the amount of small pulses determine the brightness of the light out... | 08/10/2010 |
| 7411573 | LCOS column memory effect reduction The invention concerns a method for reducing the effect of column memory. The method includes the steps of activating one of a plurality of row electrodes, selectively applying a video input signal to a plurality of column electrodes, and setting at least one of the... | 08/12/2008 |
| 7372509 | Focus voltage amplifier A dynamic focus amplifier for generating a dynamic focus voltage for a focus electrode for a cathode ray tube at a capacitive load includes a source of a periodic signal at a horizontal deflection frequency. A pull-down transistor is responsive to the periodic signa... | 05/13/2008 |
| 7248485 | Circuit arrangement with power factor correction as well as a corresponding appliance The circuit arrangement has a mains connection, a mains switch and a switched-mode power supply which contains a power factor coil for power factor correction. In this case, the mains switch has two switching contacts, one of which is arranged in a supply line betwe... | 07/24/2007 |
| 7239493 | Method for preventing the generation of excessive high voltage Method for preventing a high voltage circuit form generating excessive high voltage, wherein the method comprises the following steps: a) reading a digital representation of a reference value associated with one of a plurality of operation modes stored ... | 07/03/2007 |
| 7233118 | Line deflection circuit for a television receiver A line deflection circuit for a television receiver having a deflection coil, an S capacitor for S correction of the linearity of the deflection, the capacitor being connected in series with the deflection coil, and having means for changing over the linearity of th... | 06/19/2007 |
| 7227581 | Method and apparatus for processing video pictures, in particular for large area flicker effect reduction Plasma Display Panels (PDP) are becoming more and more interesting for TV technology. Due to the larger size of PDPs, with larger viewing angle the large area flicker effect will become more serious in the future, in particular when handling 50 Hz video standards. T... | 06/05/2007 |
| 7190333 | Video coding method and system for a plasma display panel The present invention relates to a coding method intended to improve the performance of GCC coding based on the temporal centre of gravity of displayed video codes. According to the invention, the number of video levels that can be selected in order to implement the... | 03/13/2007 |
| 7184053 | Method for processing video data for a display device The invention is related to a new kind of pre-processing for plasma display panel control. The plasma display technology has the drawback of a reduced grey scale portrayal. This is due to the fact that contrarily to CRTs where luminance is approximately quadratic to... | 02/27/2007 |
| 7145521 | Method for processing video pictures for display on a display device The present invention relates to a method for processing video pictures for display on a display device comprising a plurality of lines constituted by luminous elements called cells corresponding to the pixels of a picture, wherein the time duration of a video frame... | 12/05/2006 |
| 7141895 | Circuit arrangement comprising a power supply unit The circuit arrangement comprises a power supply unit with a first power supply only for the analogue signal processing part and for the control part of a respective device. For the digital signal processing part, a second, separate switched mode power supply is pro... | 11/28/2006 |
| 7110050 | Method for processing video pictures for display on a display device using self-priming and refreshing sub-fields The invention is related to a new kind of plasma display panel control. A known principle for PDP control is based on a combination of sub-field addressing and priming. Within the priming period all the plasma cells of the panel are pre-excited by a strong voltage p... | 09/19/2006 |
| 7079126 | Method for power level control of a display device and apparatus for carrying out the method Plasma Display Panels are becoming more and more interesting for TV technology. One important criterion for picture quality is the Peak White Enhancement Factor PWEF. In a previous patent application a method for power level control in a display with which the PWEF ... | 07/18/2006 |
| 7064731 | Display device comprising luminophors The invention corrects display faults due to the disparities between the phosphors of a display device. The correction is carried out by image processing. The invention provides a method for displaying a sequence of video images on a phosphor device comprising at le... | 06/20/2006 |
| 7042422 | Method and device for processing video pictures The differences between the time responses of phosphor elements of a plasma display panel (17) shall be reduced by signal processing means without a need of a motion estimator. Therefore, the sub-fields for driving the luminous elements are reorganized in at ... | 05/09/2006 |
| 7023450 | Data processing method and apparatus for a display device With the new plasma display panel technology new kinds of artefacts can occur in video pictures due to the principle that brightness control is done with a modulation of small lighting pulses in a number of periods called sub-fields. These artefacts are commonly des... | 04/04/2006 |
| 7019994 | Switched-mode power supply with a damping network The switched-mode power supply contains a transformer, a switching transistor in series with the primary winding of the transformer, and a damping network on the secondary side, which has a connection for a further secondary winding via which energy is transferred f... | 03/28/2006 |
| 7015878 | Method for addressing a plasma display panel The invention provides a combination of the technique of subscans common to two rows of display cells and division into two groups of subscans. Such a combination makes it possible to combine the beneficial effects of the two apparently incompatible techniques. The ... | 03/21/2006 |
| 7002320 | Power factor correction circuit with a coil The switched-mode power supply according to the invention has a power factor correction circuit, which operates on the principle of a current pump and has a first coil for damping voltage spikes, as well as a second coil for power factor correction. The two inductan... | 02/21/2006 |
| 6989804 | Method and apparatus for processing video pictures, especially for improving grey scale fidelity portrayal The present invention relates to a method for improving grey scale fidelity portrayal of pictures displayed on matrix display screens. The method comprises the following steps: a) for a given peak white level, distributing the sust... | 01/24/2006 |
| 6989828 | Method and apparatus for power level control of a display device Plasma Display Panels (PDP) are becoming more and more interesting for TV technology. One important criterion for picture quality is the Peak White Enhancement Factor (PWEF). From a previous patent application of the applicant it is known to have a table of power le... | 01/24/2006 |
| 6980215 | Method and device for processing images to correct defects of mobile object display The invention carries out a movement compensation of contouring defects. The movement compensation is carried out, for each subfield, by assigning, to each cell, the state which would correspond to a movement-compensating intermediate image located at the instant of... | 12/27/2005 |
| 6961379 | Method for processing video pictures and apparatus for processing video pictures With the new plasma display panel technology new kinds of artifacts can occur in video pictures. These artifacts are commonly described as dynamic false contour effect, since they correspond to disturbances of grey levels and colors in the form of an apparition of c... | 11/01/2005 |
| 6930694 | Adapted pre-filtering for bit-line repeat algorithm When the observation point on a PDP screen moves, artifacts will be introduced which are commonly described as “dynamic false contour”. A simple way to reduce this effect requires the use of more sub-fields at the expense of panel brightness. A first idea called... | 08/16/2005 |
| 6917225 | Driver circuit for driving a switching transistor The driver circuit for driving a switching transistor comprises a driver transformer for driving the switching transistor and an output stage for driving the driver transformer, and an output of the driver circuit is used for providing also said switching voltage. T... | 07/12/2005 |
| 6903947 | Power supply with a reduced harmonic load on the mains system, and a corresponding appliance The power supply according to the invention has a first switched-mode power supply and a second switched-mode power supply, which is connected in parallel with the first, and with both switched-mode power supplies having power factor correction. In this case, the fi... | 06/07/2005 |
| 6899139 | Tube for pumping a space between two tiles, especially for a plasma display Tube for pumping a space between two tiles, comprising a metal end-piece 9 and a glass tube 25 bonded together via a glass-to-metal seal 26; the metal end-piece 9 has shoulder means 3. Such a tube is especially intended to ... | 05/31/2005 |
| 6897900 | Display apparatus comprising a cathode ray tube (CRT) A display apparatus, for instance a television receiver, comprises a cathode ray tube, a first circuit for providing a high voltage to the cathode and a second circuit receiving a gross signal and providing on at least an output at least a luminance signal controlli... | 05/24/2005 |
| 6894664 | Method and apparatus for processing video pictures A method and apparatus for processing video pictures for dynamic false contour effect compensation is provided wherein the video picture consists of pixels having at least one color component (RGB) the color component values being digitally coded with a digital code... | 05/17/2005 |
| 6893309 | Apparatus for correcting static electron beam landing error A seamless magnetic sheath is mounted on a funnel of a cathode ray tube, behind the deflection windings of a deflection yoke. Various combinations of magnetic poles are formed in the sheath magnetic ferrite material for varying the beam landing location of the scree... | 05/17/2005 |
| 6856104 | High voltage supply for a picture tube The high voltage supply for a picture tube comprises a high voltage transformer, which generates the anode voltage of the picture tube, and a high voltage module with a switched mode power supply for providing a grid voltage, which is higher than the anode voltage. ... | 02/15/2005 |
| 6844874 | Device for controlling a matrix display cell The present invention relates to a matrix control device including a set of control circuits arranged in lines and columns and controlling an elementary point, the state of each elementary point being a function of first and second control signals) applied to the co... | 01/18/2005 |
| 6825836 | Bus arrangement for a driver of a matrix display A demultiplexer applies picture information to pixels arranged in an array of a display device having columns and rows. The demultiplexer includes transistor switches each having a control terminal, an input terminal and an output terminal. A first bus couples switc... | 11/30/2004 |
| 6765548 | Video coding method for a plasma display panel The invention proposes a novel technique for coding video for a plasma display panel, which aims to improve the use of rotating code. The method forming the subject of the invention carries out a coding of the highest grey level V1 over the entirety of the su... | 07/20/2004 |
| 6759999 | Method of addressing a plasma display panel The invention provides a novel scanning technique aimed at reducing the phenomenon of contouring. The scanning technique of the invention consists in adding at least one redundant subscan SP0 to SP4. The purpose of the redundant subscans SP0 to ... | 07/06/2004 |
| 6756995 | Method and apparatus for processing video picture data for display on a display device The invention is related to a new kind of dithering method for plasma display panels. In a former Europena Patent Application a dithering method for the plasma display technology has been presented that utilizes a 3-dimensional dither pattern for the repeated use in... | 06/29/2004 |
| 6753832 | Method for controlling light emission of a matrix display in a display period and apparatus for carrying out the method An improved addressing scheme for plasma display panel control comprises partitioning the panel into a number of sections and splitting the addressing period into correspondingly small addressing periods for each section. By varying the time distance between success... | 06/22/2004 |
| 6717558 | Method for processing video pictures for display on a display device and apparatus for carrying out the method With the new plasma display panel technology new kinds of artifacts can occur in video pictures due to the principle that brightness control is done with a modulation of small lighting pulses in a number of periods called sub-fields. These artifacts are commonly des... | 04/06/2004 |
