Patent application number | Description | Published |
20080199102 | Block noise detector and detection method, and block noise reducer and reduction method - A block noise detector has a spatial difference calculator that calculates differences between values of adjacent pixels. A spatial difference comparator detects edges by comparing the calculated differences. Eight counters count edges detected at different groups of positions spaced eight pixels apart in each horizontal line. The maximum count and the group of positions at which it occurs are detected at the end of each horizontal line to detect block noise and the positions of the block boundaries. The block noise detector is small in size because it only has to count edges in one line at a time, and detects edges accurately by comparing the difference at a given position separately with differences to the left and differences to the right. | 08-21-2008 |
20090003724 | Block noise reducer - A block noise reducer detects block boundaries in all components of an input video signal and smoothes the different components selectively on the basis of the detected block boundaries and their periodic locations. By removing block noise on the basis of block boundaries detected in color difference signals, the block noise reducer removes block noise from scenes with gradual changes in color but little or no change in luminance. | 01-01-2009 |
20090052774 | Image processing apparatus, image display apparatus, and image display method - A maximum and minimum color information detection means ( | 02-26-2009 |
20090208099 | IMAGE PROCESSING APPARATUS - An image processing apparatus enhances contrast without producing color balance distortion or color collapse by generating a gradation-scale correction table from a distribution of a characteristic quantity of an input image signal, using the gradation-scale correction table to derive a gradation correction parameter for each pixel from a maximum component value of the pixel, and multiplying all components of the pixel by the gradation correction parameter. | 08-20-2009 |
20090304274 | Image Processing Apparatus and Image Display Apparatus - A luminance information detector ( | 12-10-2009 |
20110214444 | HEAT PUMP WATER HEATER - A heat pump water heater in which the number of components is small, a measure against drain pan freezing is realized with a simple structure, and a drain reservoir is difficult to be generated in the drain pan is obtained. | 09-08-2011 |
20120045148 | IMAGE PROCESSING APPARATUS - An image processing apparatus has an image analyzer including a feature detector, a feature combiner, and a resolution discrimination signal generator. For each pixel in a prescribed area of an input image, the feature detector outputs a representative difference value obtained from the pixel values of pixels positioned, with reference to that pixel, at prescribed intervals. The feature combiner outputs a combined feature value obtained from the representative difference values obtained for each pixel in the described area. The resolution discrimination signal generator outputs a resolution discrimination signal obtained from the combined feature value. The resolution discrimination signal has a monotonic non-decreasing relationship to the combined feature value. The resolution discrimination signal indicates an extent to which the input image includes signal components with frequencies equal to or greater than a particular frequency determined by the prescribed intervals. | 02-23-2012 |
20130121611 | IMAGE PROCESSING DEVICE AND METHOD AND IMAGE DISPLAY DEVICE - An image processing device includes an edge-enhancing image enlarger that converts an input image to a high-resolution image with edge enhancement. A difference calculator determines differences between the high-resolution image and the input image. A high-resolution image corrector corrects the high-resolution image by diffusing the differences to pixels of the high-resolution image, thereby generating a corrected image in which edges are enhanced without image degradation in textured areas. | 05-16-2013 |
20130314457 | STEREOSCOPIC IMAGE DISPLAY DEVICE - A light source portion includes a plurality of back lights provided corresponding to respective regions obtained by virtually dividing a liquid crystal panel screen into a plurality of parts, the back lights have a light emission intensity controlled based on a light emission intensity value and have ON and OFF operations controlled in response to a light emission driving signal, and the light emission driving signal is constituted to sequentially turn ON the plurality of back lights synchronously with a stereoscopic image signal and to turn ON the plurality of back lights at the same time in a predetermined timing, and is constituted to individually control a light emission period for the plurality of back lights based on image information about the stereoscopic image signal. | 11-28-2013 |
20130314629 | STEREOSCOPIC IMAGE DISPLAY DEVICE - A stereoscopic image display device includes a liquid crystal panel section, a light source section, a light detection section, a light source control section, a shutter glasses section, and a timing generation section generating a light emission drive signal, a light detection gate signal, and shutter switching signals in synchronization with an image synchronization signal. The timing generation section, generates the light emission drive signal which causes each of the regions of the light source section to emit light in accordance with scanning performed in the liquid crystal panel section, and which causes all the regions of the light source section to emit light in a predetermined period, and generates the light detection gate signal which enables detection of the light detection section in the predetermined period, and generates the shutter switching signals for switching left and right shutters to a non-transmissive mode. | 11-28-2013 |
20130314641 | IMAGE DISPLAY DEVICE - An image display device includes a liquid crystal panel section, a light source section divided into a plurality of regions, a light detection section detecting the light intensity of the light source section, and a timing generation section. The timing generation section generates a light emission drive signal which turns on each of the regions of the light source section according to scanning in the liquid crystal panel section, and which turns on all the regions of the light source section in a light detection period, and generates a light detection gate signal allowing the detection of the light detection section to be effective in the light detection period. | 11-28-2013 |
20130321491 | LIGHT EMISSION CONTROL DEVICE AND METHOD, LIGHT EMISSION DEVICE, IMAGE DISPLAY DEVICE, PROGRAM, AND RECORDING MEDIUM - A light emission control device includes a partial region feature quantity detector, an enlarged region feature quantity detector, a whole screen feature quantity detector, and a light emission controller. The partial region feature quantity detector detects a feature quantity of the image as a partial region feature quantity. The enlarged region feature quantity detector defines the partial region of interest and the partial regions neighboring the partial region of interest, and detects a feature quantity of the image of the enlarged region. The whole screen feature quantity detector detects this feature quantity as a whole screen feature quantity. On the basis of the partial region feature quantity and the enlarged region feature quantity pertaining to the partial region of interest, and the whole screen feature quantity, the light emission controller controls the light emission luminance of the light emission unit corresponding to the partial region of interest. | 12-05-2013 |