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    • 3. 发明专利
    • Image processing apparatus and method
    • JP4552397B2
    • 2010-09-29
    • JP2003279649
    • 2003-07-25
    • ソニー株式会社
    • 満 多田洋 長谷川
    • G09G3/30G09G3/36G06T7/00G09G3/20G09G5/00G09G5/36H04N1/407H04N5/202
    • PROBLEM TO BE SOLVED: To provide an image processing system and its method capable of delaying the degree of deterioration of light emission elements of pixels accompanying the property deterioration with time. SOLUTION: The image processing device is characterised in that it is provided with a brightness frequency conversion section 32 which performs calculation of frequency distribution for gradation with respect to images in one frame inputted on occasion, a fixed image recognition section 33 which detects whether such a pattern as to become a fixed display is included or not in the iputted image, an image procession designation section 34 which determines a selection method of image processing (γ conversion) based on the brightness frequency distribution value obtained from the brightness frequency conversion section 32 and the judgement result of the fixed image recognition section 33 and an image processing section 15 which performs the γ conversion of the image inputted from an image input section 31 based on the image processing method selected and designated by the image procession designation section 34. COPYRIGHT: (C)2005,JPO&NCIPI
    • 6. 发明专利
    • Display device, correction value processing method
    • JP5293138B2
    • 2013-09-18
    • JP2008318218
    • 2008-12-15
    • ソニー株式会社
    • 宗紀 小野勝秀 内野和夫 中村洋 長谷川
    • H04N5/70G09F9/00G09F9/30H01L27/32
    • PROBLEM TO BE SOLVED: To obtain a correction value without being affected by detection variations of photo sensors, although emission luminance of each of pixels is measured by photosensor and a display data signal to be given to each pixel is corrected so that each pixel emits light with required luminance, and further, and further, to correct the correction value during display execution. SOLUTION: With respect to at least two or more pixels, a photosensor is provided at a position of an equal distance from the pixels. By detecting emission luminance of one pixel and emission luminance of the other pixel using one photosensor disposed in the equal distance, a correction value without being affected by the detection variations of photosensors is calculated. Further, also with respect to other pixels, a correction value is determined in a sequential chain manner using pixels whose correction values are updated partially, so that a correction value excluding the influence of detection variations of photosensors can be obtained for all the pixels constituting a display screen. During display execution, pixel deterioration is determined using dummy pixels and in accordance with the deterioration situation, the correction value is corrected. COPYRIGHT: (C)2010,JPO&INPIT