| Patent application number | Description | Published |
|---|
| 20080204372 | Method and apparatus for processing video pictures - The present invention relates to a method and an apparatus for processing video pictures for dynamic false contour effect compensation. It comprises the steps of: | 08-28-2008 |
| 20080204374 | Method and apparatus for driving an AMOLED with variable driving voltage - The sharpness impression when displaying a movement on an AMOLED (Active Matrix Organic Light Emitting Display) shall be improved. For this purpose, an apparatus for driving a cell of an AMOLED is provided including driving means for applying a driving voltage to the cell and for applying a luminance control signal to the cell during a pregiven time frame. The apparatus further includes controlling means for varying the driving voltage within the time frame according to a predefined function of time. For example, the driving voltage may be varied in the form of a triangle so that the lighting time over the frame is reduced while a CRT like behavior is emulated. | 08-28-2008 |
| 20080211749 | Method for Grayscale Rendition in Am-Oled - The present invention relates to a grayscale rendition method in an active matrix OLED (Organic Light Emitting Display) where each cell of the display is controlled via an association of several Thin-Film Transistors (TFTs). In order to improve the grayscale rendition in an AM-OLED when displaying low grayscale levels and/or when displaying moving pictures, it is proposed to split each frame into a plurality of subframes wherein the amplitude of the data signal applied to a cell of the AM-OLED can be adapted to conform to the visual response of a CRT display. According to the invention, the video frame used for displaying an image is divided into N consecutive subframes, with N≧2, and the data signal applied to the cell comprises N independent elementary data signals, each of said elementary data signals being applied to the cell during a subframe. The grayscale level displayed by the cell during the video frame is depending on the amplitude of the elementary data signals and the duration of the subframes. | 09-04-2008 |
| 20090002322 | Method for distributing display information to a remote display device, a corresponding display device, a system for distributing display information and a signal comprising display information - A subject of the invention is to ensure that a remote display device is only useable for a specific application like advertising or public information. | 01-01-2009 |
| 20090009502 | Method for driving a plasma display panel with attenuation extimation and compensation and corresponding apparatus - The picture quality on a plasma display panel shall be improved when the contrast and/or the brightness are reduced. This is achieved by estimating the reduction of the dynamic occurring in the front-end of the data processing of the plasma display device and by compensating it in the back-end. Specifically, the gain and/or offset of the video input data are adjusted and the power level of the adjusted video data is measured. The resulting power level information is updated on the basis of an attenuation information. The updated power level is used for the power management and the level of the video data being reduced in the front-end is increased on the basis of the attenuation information. Thus, the dynamic of the video and, as a result, the picture quality are improved. | 01-08-2009 |
| 20090021457 | Method for Displaying an Image on an Organic Light Emitting Display and Respective Apparatus - The driving of an active matrix organic light emitting display (AMOLED) shall be improved. A pulsing grayscale rendition shall be combined with an improved motion rendition when driving the AMOLED with analog signals. Therefore, there is provided a data signal which is applied to each cell of the AMOLED for displaying a first grayscale level of a pixel of the image during a first group of sub-frames for displaying at least a second grayscale level of a pixel of the image during at least a second group of sub-frames. The first group of sub-frames and the at least second group of sub-frames are constituting a video frame N. Each group of sub-frames is divided into a plurality of sub-frames. Each, the first group of sub-frames and the second group of sub-frames is belonging to a separate complete image of the display (AMOLED). The data signal of a cell comprises plural independent elementary data signals wherein each of the elementary data signals is applied to the cell during a sub-frame and the grayscale level displayed by the cell during the respective group of sub-frames depends on the amplitude of the elementary data signals and the duration of the sub-frames. With this concept, a flicker-free and a very high level of motion rendition can be offered. | 01-22-2009 |
| 20090051710 | Display Method in an Active Matrix Display Device - The present invention relates to a method for displaying an image in an active matrix display device and more particularly in an active matrix OLED (Organic Light Emitting Display) display. The purpose of this invention is to increase the video dynamic range of each color component. The voltages applied to the OLED cells are based on reference voltages or currents. According to the invention, a different set of reference voltages is used for each colour component. To this end, the video frame is divided into at least three sub-frames and at least one colour component of the picture is addressed during each subframe with a set of reference voltages adapted to said color component. | 02-26-2009 |
| 20090278770 | Active matrix organic light emitting display (amoled) device - The present invention relates to an active matrix OLED (Organic Light Emitting Display) device. It comprises a matrix of luminous elements associated to different colour components (red, green, blue). According to the invention, the connection of the row driver and/or data driver to the luminous elements of the matrix is modified. Each output of the row driver is connected to luminous element associated to a same colour component (red or green or blue). | 11-12-2009 |
| 20090309902 | Method for Grayscale Rendition in an Am-Oled - The present invention relates to an apparatus for displaying an input picture of a sequence of input pictures during a video frame made up of N consecutive sub-frames, with N≧2, comprising
| 12-17-2009 |
| 20100053200 | METHOD AND DEVICE FOR CODING VIDEO LEVELS IN A PLASMA DISPLAY PANEL - The invention relates to a method and a device for coding video levels of pixels of a colour component of a picture to be displayed on a display device into code words. The invention is more particularly applicable to Plasma Display Panels (PDP) to improve the picture quality (grayscale enhancement, dynamic false contour reduction). The main idea of the invention is to automatically change the floor and ceiling levels used classically for dithering each pixel value depending on the neighboring pixels of the same color component. The size of the window determining the neighboring pixels is dependent on the definition of the wanted flat field size. | 03-04-2010 |
| 20100110240 | PROCESSING DEVICE FOR CORRECTING DEFECT PIXEL VALUES OF AN IMAGE SENSOR UNIT, IMAGE SENSOR UNIT WITH THE PROCESSING DEVICE AND METHOD - CMOS image sensors are usually suffering from fixed pattern noise and random defect pixels. However, for economical reasons and in order to increase the manufacturing yield, some random defective pixels are usually accepted even for professional devices. In this case, the defect pixels are usually corrected by signal processing. A processing device for correcting of at least one defect pixel value of an image sensor unit is proposed, the image sensor unit comprising at least a first and a second pixel array, wherein the image sensor unit is embodied to project the same image onto each pixel array, the processing device comprising at least a first and a second input channel for receiving pixel values of the first and the second pixel array, respectively, wherein the processing device is operable to exchange the defect pixel value by a corrected pixel value, wherein the corrected pixel value is estimated by evaluating the values of neighbouring pixels of the defect pixel of the same pixel array, wherein the corrected pixel value is estimated by evaluating values of a corresponding pixel and its neighbouring pixels of the second pixel array at the same location as the defect pixel of the first pixel array in respect to the projected image. | 05-06-2010 |
