| Patent application number | Description | Published |
|---|
| 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 |
| 20080310824 | Method and device for encoding video levels into subfield code words - The invention relates to a method and a device for encoding the video level of a pixel of a picture into a subfield code word in a display device. It can be applied to every display device using a PWM (Pulse Width Modulation) technology and subfields for displaying video picture. The bits of the subfield code word are computed recursively one after the other from the bit having the most significant weight to the bit having the least significant weight. According to the invention, for determining the state of a bit of the subfield code word, a first threshold and a second threshold is associated with said bit, said second threshold being greater than said first threshold, and the video level to be encoded by this bit and its following bits in the subfield code word are compared to the first and second thresholds. If the video level is lower than the first threshold, a state “OFF” is allocated to the bit. If the video level is greater than the second threshold, a state “ON” is allocated to the bit and if the video level is lying between the first and second thresholds, a state “ON” is allocated to the bit according to a predetermined criteria. | 12-18-2008 |
| 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 |
| 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 |
| 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 |
| 20100157152 | Display device with feedback elements and method for monitoring - A display system including a plurality of display units shall be supervised as to its proper functioning as well as the right content to be displayed. Therefore, there is provided a display device and a corresponding method for monitoring the presentation of a video signal on a display screen having a plurality of screen drivers. A mark signal is added to the video signal and a mark ( | 06-24-2010 |
