Patent application number | Description | Published |
20090278774 | CONTENT-ADAPTIVE ADJUSTMENT SYSTEM AND METHOD - A content-adaptive adjustment system and method for a light-emitting display is disclosed. An analysis unit analyzes, for example, the average data intensity/power consumption and the data distribution of the image data to be displayed. An adjustment unit then adjusts, for example, the pixel values of the image data or the drive levels of the light-emitting display according to the analyzed data distribution, such that the consumed power in the light-emitting display could be considerably reduced. | 11-12-2009 |
20100079080 | Gamma Generator System and Method Adaptable for Backlight Control - A gamma reference voltage generating system and method adaptable for backlight control is disclosed. A gamma reference voltage generator adaptively generates an analog gamma reference voltage under the control of a digital control signal. The digital control signal is specifically arranged to accordingly level-up an upper limit of a gamma curve, thereby improving brightness loss. | 04-01-2010 |
20100079362 | Overdrive Compensation/Update Adaptable to Dynamic Gamma Generator - An overdrive system adaptable for a dynamic gamma generator is disclosed. A current gray-to-voltage converter (G/V) converts image data of a current frame from gray code to voltage level, and a previous gray-to-voltage converter (G/V) converts image data of a previous frame from gray code to voltage level. The voltage level of current frame and the voltage level of previous frame are inputted to an overdrive-voltage lookup table to retrieve an overdrive voltage level. Afterwards, a voltage-to-gray converter (V/G) converts the retrieved overdrive voltage level from voltage level back to gray code, resulting in an overdrive gray code. Accordingly, the overdrive gray code is compensated. Alternatively, the overdrive gray code is used to update an overdrive-gray-code lookup table, an output gray code of which is fed to the source driver. | 04-01-2010 |
20100079504 | Backlight Control System and Method - A backlight control system and method are disclosed. An overdrive device modifies a backlight duty signal according to a current-frame backlight duty signal and a previous-frame backlight duty signal. In one embodiment, the overdrive device is implemented with a lookup table that outputs the modified backlight duty signal. The backlight driven by the modified backlight duty signal then emits light to a display panel, thereby increasing a response time of the backlight. | 04-01-2010 |
20100289811 | Dynamic Backlight Control System and Method with Color-Temperature Compensation - A dynamic backlight control system and method with color-temperature compensation are disclosed. A dynamic backlight control unit dynamically controls brightness of a backlight unit according to image data. A color-temperature model is provided for mapping the brightness of the backlight unit into color temperature. A color-temperature compensation unit then compensates the image data according to the mapped color temperature. | 11-18-2010 |
20100289827 | Single-Gamma Based Color Gamma Generation System and Method and Display System thereof - A single-gamma based color gamma generation system and method is disclosed. In one embodiment, a gamma controller generates a number of gamma curves associated with a number of colors respectively in a color space. A gamma reference voltage generator (GRVG) generates a plurality of gamma reference voltages according to one selected gamma curve associated with a selected color. An image processor receives the gamma curves and compensates the image data of non-selected color or colors. | 11-18-2010 |
20100289944 | Frame Rate Up-Conversion Based Dynamic Backlight Control System and Method - A frame rate up-conversion (FRUC) based dynamic backlight control (DBLC) system and method are disclosed. A frame rate up-conversion (FRUC) unit increases frame rate by adding at least one image frame in a video display, and a dynamic backlight control (DBLC) unit adjusts backlight luminance in the video display. The DBLC unit operates at an original frame rate, and adjusts the backlight luminance for the added image frame according to statistical information about the added image frame derived from the FRUC unit. | 11-18-2010 |
20100309213 | Adaptive Stepping-Control System and Method for Dynamic Backlight Control - An adaptive stepping-control system and method for dynamic backlight control (DBLC) is disclosed. A stepping-control unit adjusts output of a dynamic backlight control (DBLC) device, such that the backlight luminance generated from a backlight unit may change smoothly. The amount of change of the backlight luminance per unit time (or stepping rate) varies according to the content of the image data. | 12-09-2010 |
20110058739 | SYSTEM AND METHOD OF CONTRAST ENHANCEMENT - A system and method of contrast enhancement is disclosed. A contrast enhancement unit processes an input pixel to generate a contrast-enhanced pixel, and a delta unit subtracts the input pixel from the contrast-enhanced pixel, thereby resulting in a difference value. Multiple delayed difference values generated by a delay unit are low-pass filtered to generate a refined difference value. An adding unit adds back the refined difference value to the input pixel, thereby resulting in an output pixel that is contrast-enhanced without noise boost. | 03-10-2011 |