Patent application number | Description | Published |
20100238193 | PROGRAMMABLE DITHERING FOR VIDEO DISPLAYS - In a liquid crystal display (LCD) driver circuit, harmonizing a pixel inversion pattern and a dither pattern is disclosed. The pixel inversion pattern and the cooperating dither pattern interact with each other in such a way that there is substantially no discernable video artifacts generated. The cooperating dither pattern can be selected from a plurality of dither patterns using a programmable dither block. | 09-23-2010 |
20110091114 | VIDEO WINDOW DETECTOR - The invention provides for automatically identifying the location of a displayed video window based upon a characterization of selected portions of the image for realness based upon a distribution of luminance values for the selected portions. The image is then searched mathematically for a large rectangle of realness, and if found, a similar operation is performed in a smaller rectangle around each of the edges of the large rectangle, in turn, zooming in to a resolution of one pixel, thus identifying the position of the edge. This process can be repeated as often as necessary in order to maintain a fix on the edges of the video window. | 04-21-2011 |
20110157324 | METHOD AND APPARATUS FOR VIEWING 3D VIDEO USING A STEREOSCOPIC VIEWING DEVICE - Methods and systems are described for enabling the operation of a stereoscopic viewing device such that the viewing device provides a movable viewing window that enables the 3D rendering of 3D image data displayed by a backlit LCD device. In a particular implementation, the systems and methods disclosed herein are operable to control the operation of a pair of LCD shutter glasses. | 06-30-2011 |
20110227940 | METHOD OF MODELING THE LIGHT FIELD CREATED BY A LOCAL-DIMMING LED BACKLIGHT FOR AN LCD DISPLAY - A controller for an LCD display is described. The controller can control an LED backlight that includes an array of LED lighting elements and an LCD panel that includes a number of pixels. The controller can modulate an individual or groups of the lighting elements in the LED backlight, such as dimming lighting elements, to control a light-field emitted from the LED backlight. The modulation of the lighting elements, such as dimming, can improve image contrast ratios that are generated using the LCD display. Methods and apparatus are described that can simplify calculations used to determine 1) the light-field generated by the LED backlight and 2) a correction factor for adjusting pixel data. The correction factor can be used to adjust an amount of light transmitted by each pixel in the LCD panel to compensate for the backlight producing a light-field that is brighter in some areas and dimmer in other areas. | 09-22-2011 |
20110279482 | System and Method for Controlling a Display Backlight - In one embodiment, a backlight controller for a zoned backlight display includes a processor having a brightness value output. The processor is configured to provide a brightness value for at least one brightness zone of the display based on a target brightness value for the at least one zone, a past brightness value of the at least one zone, and a brightness time response. | 11-17-2011 |
20120274669 | Apparatus and Method for Modeling the Light Field of a Local-Dimming LED Backlight for an LCD Display - An apparatus for displaying images. The apparatus comprises: an LCD panel comprising a plurality of pixels for displaying the images; and a backlight comprising a plurality of light sources. Each of the plurality of light sources is associated with one of a plurality of zones and each of the plurality of zones comprises a plurality of grid points. A controller coupled to the LCD panel and the backlight is configured to retrieve contour data associated with each of the plurality of light sources. The contour data is associated with a 3-D contour shape comprising a plurality of facets, each facet associated with at least one of the plurality of grids. The controller is configured to determine a brightness level of at least one pixel in a first grid based on a slope value associated with a first facet associated with the first grid. | 11-01-2012 |
20130107060 | SYSTEM AND METHOD FOR LIGHT COMPENSATION IN A VIDEO PANEL DISPLAY | 05-02-2013 |
20130120588 | VIDEO WINDOW DETECTION - A video window detector includes a region characteristic determiner to generate at least one characteristic value for at least one region of a display output; a characteristic map generator to generate an image map from the at least one characteristic value for at least one region of the display output; and a window detector to detect at least one video window dependent on the image map. | 05-16-2013 |