Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 8164692 | Gamma correction circuit, gamma correction method, and image processing apparatus According to one embodiment, a gamma correction circuit including a serial storage unit which serially stores first and second parameter information in a storage area, a first parallel storage unit which parallelly stores the first parameter information in the stora... | 04/24/2012 |
| 8111333 | Video bit-stream gamma-correction method and a multipoint control unit A video bit-stream gamma characteristic correction method and a multipoint control unit in video communication field resolve the gamma distortion problem of video image in the existing multimedia communication. In the method, the receiving end carries out correction... | 02/07/2012 |
| 8098335 | Nonlinear processing device and image display apparatus A nonlinearly processed (gamma-corrected) video signal is subjected to three-dimensional signal level correction using three-dimensional correction values and corresponding to a position in a horizontal direction and a vertical direction of a pixel on a display scre... | 01/17/2012 |
| 8094238 | Video signal processing device and video signal processing method A video signal processing device is a video signal processing device for converting an input first video signal to a second video signal, and inputting to a display panel, the video signal processing device including an input unit for receiving an input of a set val... | 01/10/2012 |
| 8089560 | Image processing apparatus, image processing method and program An image processing apparatus according to an embodiment of the present invention includes a correction interval setting unit for setting a correction interval; a correction interval dividing unit for dividing the correction interval into a black side interval and a... | 01/03/2012 |
| 8089561 | Gamma correction apparatus A gamma correction apparatus includes a load controlling unit, a non-volatile memory, a volatile memory, a checking unit and a counter. The non-volatile memory stores gamma data and a checking code. The load controlling unit controls an operation of loading the gamm... | 01/03/2012 |
| 8077261 | Digital gamma correction circuit and digital gamma correction method A correction characteristic storage portion stores coordinates (Xp,Yp) of a break point P and curve approximation range widths Wa and Wb. A basic broken line coefficient calculation portion calculates a coefficient C1 for a straight line OP and a coefficient ... | 12/13/2011 |
| 8035749 | Gamma-correction circuit for graphic signals The present invention provides a gamma-correction circuit, which is capable to decrease the noise in graphic signal or make the noise not clearly sensible while carrying out gamma-correction on the graphic signals. In the circuit, a high-pass filter is used to decre... | 10/11/2011 |
| 7940334 | Adaptive gamma transform unit and related method The invention discloses a Gamma transform unit. The Gamma transform unit has a lookup table. The lookup table stores a plurality of difference values corresponding to a plurality of predetermined input values. Each of the difference values substantially equals a dif... | 05/10/2011 |
| 7920212 | Digital gamma correction circuit and digital gamma correction method A digital gamma correction circuit includes: a data setting portion for setting set data including a section width W1 and coordinates (Xp,Yp) of a break point P; a coefficient calculation portion for calculating coefficients for straight-line equations repres... | 04/05/2011 |
| 7839456 | Video signal processing apparatus and video signal processing method According to one embodiment, a video signal processing apparatus includes an acquisition unit to obtain the frequency of each luminance level from the input luminance signal worth of one frame, a frequency conversion unit that logarithmically converts the frequency ... | 11/23/2010 |
| 7796196 | Picture signal processor and picture signal processing method According to one embodiment, in the case where a non-linear correction processing is performed in a direction in which an amplitude level of a luminance signal is heightened, an amplitude level correction processing is performed to a color signal on the basis of a f... | 09/14/2010 |
| 7768577 | Gamma correction device, gamma correction method thereof, and liquid crystal display device using the same A gamma correction device for use in a display device includes a gamma voltage controller to generate a digital gamma signal in a unit of a predetermined interval, and a gamma voltage generator to generate an analog gamma voltage corresponding to the digital gamma s... | 08/03/2010 |
| 7679686 | Electronic device comprising a gamma correction unit, a process for using the electronic device, and a data processing system readable medium An electronic device includes at least one gamma correction unit including a first gamma correction unit. In one embodiment, the first gamma correction unit includes at least one tap that is configured to allow the gamma function for the first gamma correction unit ... | 03/16/2010 |
| 7612831 | Gamma correction device, image conversion apparatus using the same, and display device There are provided a gamma correction device enabling correct gamma correction while reducing the capacity of a lookup table, an image conversion apparatus and a display device using the same. A gamma correction device for outputting, as an m-bit signal, a digital i... | 11/03/2009 |
| 7573532 | Image processing device An image processing device is comprised of a parameter storing unit (i) storing a plurality of inverse gamma correction parameters, color conversion parameters, gamma correction parameters and the like, and (ii) selecting one parameter from each of a plurality of su... | 08/11/2009 |
| 7511770 | Method and device for processing a video signal aimed at compensating for the defects of display devices The invention relates to a method and device for processing video images aimed at compensating for the defects of display devices. According to the invention, the method is characterized in that it comprises the following steps: co... | 03/31/2009 |
| 7439984 | Image signal processing method, image signal processing apparatus, and image displaying apparatus An image signal processing method for performing nonlinear compensation on an image signal to be fed into a display device (103). The characteristics of nonlinear compensation are changed according to the brightness of a place in which the display device (... | 10/21/2008 |
| 7428011 | Wide dynamic range electronic image recording and reproducing system The electronic camera has an imaging device that images a subject with subject reflectance R (%) with a dynamic range wider than that at displaying or printing to acquire image data and a recording device that converts the image data acquired by the imaging device w... | 09/23/2008 |
| 7408530 | Apparatus and method of driving a plasma display panel The present invention relates to to an apparatus for driving a plasma display panel in which an image being full of life is represented through expansion of contrast and the gray level can be expanded, and method for driving the same. According to the present invent... | 08/05/2008 |
| 7382382 | Display device conversion device, display device correction circuit, display device driving device, display device, display device examination device, and display method The liquid crystal display device inputs a signal, corrected by a correction circuit provided with a sigmoid inverse function generator, to a source driver. A sigmoid function which is an S-shaped function is used to approximate an input/output characteristic (appli... | 06/03/2008 |
| 7382416 | Nonlinear process circuit used for image processing A circuit, method and computer program product wherein a nonlinear signal outputted from a nonlinear circuit is nonlinearly processed in two steps using a main circuit and an assistant circuit. The main circuit performs a first relatively rough nonlinear process (ma... | 06/03/2008 |
| 7372507 | Real-time content based gamma adjustment for digital video display Methods for improving video images by making real-time gamma correction adjustments to such images are described. More particularly, gamma correction adjustments may be optimized for each individual frame of a video image by first segregating the pixels of an image ... | 05/13/2008 |
| 7369183 | Image display apparatus The present invention provides a technique for performing gamma correction processing when there are a plurality of characteristic areas, each of which is characterized by the high frequency in a luminance histogram to improve the impression of contrast. According t... | 05/06/2008 |
| 7355606 | Methods and apparatuses for the automated display of visual effects Methods and apparatuses for the generation of visual effects according to the elapsed time for real time display. One embodiment of the present invention provides an automated mechanism for displaying visual effects (e.g., fade to or from a target color) through adj... | 04/08/2008 |
| 7324164 | Display apparatus and control method thereof A display apparatus having a display to display a picture, including an input unit, a data operator, a storage unit to store data about a gamma curve to be applied corresponding to an average input brightness of an input video signal, an auto-adjuster to adjust a po... | 01/29/2008 |
| 7317460 | Liquid crystal display for improving dynamic contrast and a method for generating gamma voltages for the liquid crystal display An LCD for improving dynamic contrast by adjusting gamma voltages according to the brightness of an image is provided. The LCD includes: a liquid crystal display panel assembly having a plurality of pixels provided on crossing areas of a plurality of gate lines and ... | 01/08/2008 |
| 7312834 | Image processor, semiconductor integrated circuit, and method for processing an image An image processor includes a luminance signal processor configured to execute an amplification by utilizing a gain set by a plurality of gain step-sizes including a first gain step-size and a second gain step-size less than the first gain step-size, to an image sig... | 12/25/2007 |
| 7304655 | Image display apparatus An image display apparatus with pixels where each of the pixels has a light emitting element such as an organic EL (electro-luminescence) element. The brightness of the light emitting element is controlled by the current flowing in the light emitting element. The im... | 12/04/2007 |
| 7286104 | Method and device for gamma correction A display device, such as an electroluminescent display device, includes a matrix of pixels, each pixel being driven by a drive pulse that is pulse width modulated. The width of the drive pulse is controlled by a gamma correction device, in which gamma correction in... | 10/23/2007 |
| 7265795 | Video signal processing circuit, video display apparatus, and video display method Embodiments of the invention provide a video display technique with which a stable video with a high contrast can be obtained according to brightness of a screen. In one embodiment, a video signal processing system for a video display apparatus which performs displa... | 09/04/2007 |
| 7259798 | Image compensation apparatus The present invention provides an image compensation apparatus, by which a hardware structure is simplified and by which resolution of a remanded color gamut is enhanced when an inputted digital image is compensated to fit the characteristics of a display device. Th... | 08/21/2007 |
| 7242377 | Image display device This invention relates to an image display device having: an adjusting circuit that adjusts image signals to be inputted based on an adjusting value to be sequentially up-to-dated; a non-linear converting circuit at a stage after the adjusting circuit, the non-linea... | 07/10/2007 |
| 7233705 | Method and apparatus for reducing inaccuracies when processing color data with a tone map A method and apparatus that reduces the inaccuracies in the tone map operation in the dark areas of an image. ... | 06/19/2007 |
| 7233305 | Gamma reference voltage generator A programmable buffer integrated circuit which can be programmed to output a set of gamma correction reference voltages to be used in LCD displays. Once programmed, the buffers will continuously output the programmed value. The device incorporates a programming inte... | 06/19/2007 |
| 7224351 | Liquid crystal display and driving device thereof The present invention discloses a data driver and a liquid crystal display including the same capable of solving the problems on the liquid crystal display and of decreasing the number of input pins of an external side by generating gamma reference voltages at inter... | 05/29/2007 |
| 7224402 | Apparatus for processing image signal and method thereof An image signal processing apparatus and method is capable of variably performing format conversion and image quality improvement according to a kind of an inputted image signal. A detecting section detects a kind of image signal inputted from an external device. A ... | 05/29/2007 |
| 7209146 | Methods and apparatuses for the automated display of visual effects Methods and apparatuses for the generation of visual effects according to the elapsed time for real time display. One embodiment of the present invention provides an automated mechanism for displaying visual effects (e.g., fade to or from a target color) through adj... | 04/24/2007 |
| 7209182 | False contour correcting apparatus and method A false contour correcting apparatus is capable of removing a false contour in an image based on a digital image signal while avoiding such a side effect caused by false contour correction where noises negatively effecting the display occur on a screen. Therefore, i... | 04/24/2007 |
| 7202864 | Apparatus and method for driving a liquid crystal display An apparatus for driving a liquid crystal display that includes a normal driving interval for providing normal driving of the liquid crystal display with a real-data signal after a reset period, wherein the liquid crystal display includes a liquid crystal between pi... | 04/10/2007 |
