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| Number | Title | Issue Date |
| 8149337 | Video processing apparatus and video processing method According to one embodiment, a video processing apparatus includes an input module and a video processor. The input module is configured to input a video signal. The video processor is configured to apply sharpening processing to pixels in a horizontal direction and... | 04/03/2012 |
| 7283683 | Image processing device and image processing method In an image processing device, in order to display an image on a display device having nonlinear gradation characteristics, first, a contrast estimation unit (37) estimates the contrast of the image represented by the image data (51) input from an imag... | 10/16/2007 |
| 7271745 | Resampling detection apparatus, resampling detection method, resampling apparatus, and resampling method A resampling detection apparatus for receiving a plurality of input signals composing a digital signal, and detecting whether the digital signal is a resampled signal, includes an estimation section that estimates a signal before resampling for the digital signal fr... | 09/18/2007 |
| 7190409 | Method for displaying an image having a maximal brightness An electro-optical device and a method for displaying an image are disclosed. A clear image with a clear profile can be displayed therein by processing input image data, for example input image data of TV broadcasting received by the device. ... | 03/13/2007 |
| 7161636 | Vertical sharpness adjustment device and TV receiver therewith A vertical sharpness adjustment device with which a viewer of a TV receiver can choose a degree of vertical sharpness adjustment to enhance a contour of a picture in vertical direction is offered. The vertical sharpness adjustment device includes a terminal to which... | 01/09/2007 |
| 7123300 | Image processor and method of processing images An image processor arranged in operation to generate an interpolated video signal from a received video signal representative of an image. The image processor comprises an adaptable register store comprising a plurality of register elements and is coupled to a contr... | 10/17/2006 |
| 7119854 | Method for deriving an objective sharpness metric A method is provided for deriving an objective sharpness metric for objectively determining the level of image sharpness of many and unspecific images having different degrees of sharpness. The method for deriving the objective sharpness metric utilizes sub-band fre... | 10/10/2006 |
| 6947060 | Image forming apparatus, electron beam apparatus, modulation circuit, and image-forming apparatus driving method An image forming apparatus which performs pulsewidth modulation with a pulsewidth set by counting a clock. Especially, for grayscale level correction by setting the frequency of the clock, the periodic clock is counted, and an output pattern is changed in accordance... | 09/20/2005 |
| 6930729 | Apparatus and method for deleting sawtooth wave An apparatus and method for processing a video signal, and particularly, an apparatus and method for deleting a sawtooth wave are provided in which a sawtooth wave component is detected and with consideration of direction the sawtooth wave is deleted. The sawtooth w... | 08/16/2005 |
| 6864923 | Edge correction circuit In an edge correcting circuit of an image to be represented by a digitized image signal, a high-frequency signal extracting circuit (5) extracts a high-frequency signal of the image by calculation based on a signal of a target pixel, a signal of a pixel shift... | 03/08/2005 |
| 6674253 | Scan velocity modulation technique A video signal is split into a first signal and a second signal. The first signal includes low amplitude/high frequency components of the video signal, which can be properly amplified by a video amplifier. The second signal includes high amplitude/high fr... | 01/06/2004 |
| 6483551 | Method for displaying an image having a maximal brightness An electro-optical device and a method for displaying an image are disclosed. A clear image with a clear profile can be displayed therein by processing input image data, for example input image data of TV broadcasting received by the device.... | 11/19/2002 |
| 6476876 | Contour emphasizing circuit A contour emphasizing circuit in which VE detected by a vertical contour component detecting unit and HE detected by a horizontal contour component detecting unit are added by a first adder and then multiplied by a coefficient, and the product is added to... | 11/05/2002 |
| 6429881 | Method and system for transitioning graphic elements of a network interface description document A method and system for viewing interface description documents, such as Web pages, performs a transition between a first graphic element and a second graphic element which are displayed according to the interface description document being viewed. To all... | 08/06/2002 |
| 6384872 | Method and apparatus for interlaced image enhancement A method for image enhancement for an interlaced display includes receiving a first group of pixels aligned about an axis, detecting a second group of pixels within the first group of pixels, each pixel of the second group of pixels having a luminous disp... | 05/07/2002 |
| 5812211 | Image signal processing apparatus for prompter The image signal processing apparatus for prompter provides a screen easy to view from which horizontal flickering on an image in horizontal scroll is eliminated. In a unit for displaying image data of a manuscript with interlace scanning, and horizontall... | 09/22/1998 |
| 5801791 | Method for displaying an image having a maximal brightness A method for displaying an image with a clear outline by correcting original image data of addresses in the vicinity of addresses on which a boundary line image is contained in an original image wherein the addresses on which a boundary line image is cont... | 09/01/1998 |
| 5790205 | Method of increase sharpness in digital displays A method for processing video data for increased sharpness. The data undergoes a process by which it is filtered in two dimensions. Using separable, one-dimensional filters, the process cores the data to prevent noise enhancement and applies gain to the r... | 08/04/1998 |
| 5748258 | Apparatus and method for processing a video signal Video signal processing apparatus and method which generates an aperture correction signal, or detail signal, which has a narrow width even for video signals that have low high frequency components. The processing apparatus generates a standard detail sig... | 05/05/1998 |
| 5715015 | Method of enhancing details contained in a color signal and a circuit for implementing the same in a color video apparatus A method and circuit for reducing distortion of low level signals by efficiently separating noise and signal components using correlativity between respective red (R), green (G) and blue (B) channels and the amplitudes of the detail components. The detail... | 02/03/1998 |
| 5543859 | Horizontal contour emphasizing signal processor An improved horizontal contour emphasizing signal processor is provided with a detector to detect a period during which luminance signal changes are produced, a generator to generate a rectangular-wave signal during this period, and a multiplier for multi... | 08/06/1996 |
| 5537154 | Edge compensation method and apparatus of image signal The present invention relates to a digital image signal processing method and apparatus, and more particularly, to an edge compensation method and apparatus of an image signal capable of improving the quality of an image in instruments performing a digita... | 07/16/1996 |
| 5491521 | Scan velocity modulation system with auxiliary vertical deflection towards bright side of video signal transitions A video signal is applied to a kinescope having scan velocity modulation for improving picture sharpness in the vertical direction. Pictures from video signals of a type having non-interpolated and vertically interpolated lines (e.g., interlace-progressiv... | 02/13/1996 |
| 5481311 | Method and apparatus for direction related interpolation For progressive scan conversion adjacent fields cannot be used to interpolate moving objects because motion blur will be introduced then. The most simple solution is to insert the average of the two adjacent lines for each missing line. A technique superi... | 01/02/1996 |
| 5467145 | Circuitry for enhancing detail in color video signals In video signal processing circuitry detail enhancement is done on each of three color channels in response to the detail information, the enhancement of the detail in each color channel being done in reliance on separated high-spatial-frequency informati... | 11/14/1995 |
| 5432563 | Image contour enhancing apparatus which limits enhancement where signal components for contour enhancement in both horizontal and vertical directions are generated in overlapping relationship An image contour enhancing apparatus capable of minimizing excessive enhancement of the image contour in an image area where both a horizontal contour enhancing signal and a vertical contour enhancing signal are generated in overlapping relation. In the i... | 07/11/1995 |
| 5418574 | Video signal correction apparatus which detects leading and trailing edges to define boundaries between colors and corrects for bleeding A video signal correction apparatus has a memory for storing a luminance value and color difference values for each pixel in an image, a horizontal color difference correction arrangement and a vertical color difference correction arrangement. The horizon... | 05/23/1995 |
| 5386245 | Apparatus and method for processing a digital video signal which prevents discontinuities and erosion of the picture area In order to reduce the effects of discontinuities at the edge of a picture and reduce erosion of the usable picture area caused by a filtering or interpolation operation, the edges of the picture are extrapolated prior to such an operation. This may be ac... | 01/31/1995 |
| 5239375 | Real-time endoscopic image processing system A real-time endoscopic image processing system for removing a net pattern from an image has an image processing section (1000) which includes a first controlling circuit (400) for receiving a video signal (S2) from one of a video signal S1 output from a t... | 08/24/1993 |
| 5150214 | Method and circuit for correction of horizontal edges A circuit for correcting horizontal edges in a digital image signal processing system, includes: three filtering circuits for filtering an input luminance signal to obtain a low frequency component, a medium frequency component and a high frequency compon... | 09/22/1992 |
| 5144399 | Color image pickup apparatus A color image pickup apparatus for correcting the sharpness of the luminance signal in a color image pickup system for taking out as different color signals for each of the horizontal lines the color information from the objects to be photographed with th... | 09/01/1992 |
| 5124794 | Adaptive peaking circuit A video system includes a scan converter for developing a progressively scanned display of video lines from a two field interlaced line system. A spatial array of six pixels covering two successive video lines is developed and gradients are determined bet... | 06/23/1992 |
| 5119193 | Video-signal processing device A video signal processing device includes a first interpolation filter, a second interpolation filter, a frequency component detection circuit and a switching circuit. The first interpolated signal free from deterioration in a horizontal direction and the... | 06/02/1992 |
| 4970593 | Video image enhancement utilizing a two-dimensional digital aperture correction filter A video camera system has a modulation transfer function (MTF). Video image data are stored in frame grabbers and converted in a digital signal processor from the image domain to the spatial domain by a two-dimensional digital Fourier transform. The spati... | 11/13/1990 |
| 4962419 | Detail processing method and apparatus providing uniform processing of horizontal and vertical detail components In a signal processing network including a color correction matrix and gamma compensation, detail processing is disclosed that includes a detail extraction circuit for generating a detail signal from an un-matrixed green signal and a detail enhancement ci... | 10/09/1990 |
| 4961110 | Endoscope apparatus This endoscope apparatus comprises an endoscope having at least an image forming optical system, a wavelength separating apparatus separating an observed object image into images of a plurality of wavelength ranges, an imaging apparatus forming an image b... | 10/02/1990 |
| 4912556 | Apparatus for compensating contour of television signal There is provided an apparatus for compensating a contour of a television signal in a TV signal processing apparatus in which a predetermined control signal including a field interpolation control signal to control an interpolating method when reconstruct... | 03/27/1990 |
| 4908874 | System for spatially transforming images A system for spatially transforming images by separate transformation of each dimension of the image is exemplified by a raster scan television system which includes for each color component a transposing memory providing a change of scan direction from h... | 03/13/1990 |
| 4891697 | Electronic endoscope having function of effecting enlargement/reduction processing In an electronic endoscope apparatus of the type which uses a solid state imaging device to effect photoelectric conversion of an optical image, the image signal read from the solid state imaging device is subjected to signal processing for changing image... | 01/02/1990 |
| 4882623 | Signal processing apparatus for endoscope capable of changing outline enhancement frequency A signal processor for processing signals obtained from an electronic endoscope having an image pickup device which performs photoelectric conversion, the processor having an outline enhancing circuit capable of enhancing outlines within one of a pluralit... | 11/21/1989 |
