|
Match
|
Document |
Document Title |
|
|
6088065 |
Contour correction apparatus and method
In a contour correction apparatus, a first sample is selected from among at least five plural samples of an input digital video signal as an indication of an upper limit value. The plural samples...
|
|
|
6072539 |
Method and arrangement for steepening color edges
A method and arrangement for steepening the edges of a color signal, in which a control signal is generated which is obtained by differentiation, rectification and subsequent differentiation of the...
|
|
|
6072538 |
Digital image enhancement
Digital image enhancement apparatus for processing an input sampled image signal having an input sample rate to generate an output, enhanced, image signal at the input sample rate comprises one or...
|
|
|
6043853 |
Apparatus and method for emphasizing an outline of a video signal
Video camera which emphasizes an outline of a video signal produced thereby. A detail signal of a video image represented by the video signal is generated and which represents a vertical outline...
|
|
|
6034742 |
Adaptive sharpness enhancement for a multi-frequency scanning monitor
The present invention relates to a multi-frequency display system and method for providing sharpness enhancement. The system comprises a sharpness enhancement circuit that is configured to receive...
|
|
|
6008862 |
Perceived color transient improvement
In a method of obtaining an improved perceived color transient, an artificial transient signal is inserted (50) into a luminance signal (Yin) when it is detected (10, 20, 30) that there is an edge...
|
|
|
6005975 |
Circuit for compensating pattern recognition type edge of video signal processor
An improved circuit for compensating a pattern recognition type edge for a video signal processor which is capable of preventing a undershooting and an overshooting by recognizing a pattern of a...
|
|
|
5963271 |
Image processing apparatus and method with aperture correction
An image processing apparatus and method wherein the apparatus has an input unit for inputting input image information of image data and output device information of an output device which outputs...
|
|
|
5959694 |
Video signal with contour adjustment processing apparatus
An apparatus for processing a video signal by adjusting the contour of a picture. The apparatus includes an arrangement from a delay circuit 2 to a subtraction circuit 5 for extracting a contour of...
|
|
|
5959693 |
Pixel adaptive noise reduction filter for digital video
A current pixel of a video image is adaptively filtered to provide stronger filtering when there is a high likelihood that noise is present. Weaker filtering is provided when the presence of a...
|
|
|
5956096 |
Stress mitigating method for video display terminal
In a video display terminal (VDT) adapter connected to a moving picture output device, inputting means inputs, from the moving picture output device, an input moving picture signal indicative of...
|
|
|
5940141 |
Nonlinear vertical bandwidth expansion of video signals
(1) The analog or digital components (such as RGB, Y/I/Q, Y/U/V, Y/R-Y/B-Y, Y/Cr/Cb, etc.) of a compatible standard-bandwidth 2-1 interlaced television signal, an analog signal, such as a standard...
|
|
|
5936681 |
Video display monitor employing image interpolation
A video display monitor employs interpolation which maintains sharpness in images which have large differences in signal levels of picture elements and assuring smoothness of images such as lamps...
|
|
|
5936682 |
Circuit for enhancing chrominance transitions in real-time video reception
A circuit for enhancing chrominance transitions in a received chrominance video signal comprises a linear-phase digital filter supplied with an input stream of discrete chromatic image elements....
|
|
|
5920357 |
Digital color transient improvement
A digital color transient improvement (CTI) method and apparatus for enhancing the color sharpness of a chrominance signal by increasing the steepness of color edges without ringing. A median logic...
|
|
|
5917554 |
Picture signal processing apparatus
A picture signal processing device for processing picture signals for displaying e.g., an enlarged picture, a contracted picture or a still picture. The picture signal processing device includes a...
|
|
|
5912702 |
Video camera and image enhancing apparatus
A video camera and an image enhancing apparatus which can add details without deteriorating an S/N ratio near the black level are provided. The video camera is constructed by: an image pickup...
|
|
|
5912715 |
Scanning speed modulating circuit and method
A method and apparatus for enhancing an edge in an image edge by controlling the electron beam scanning speed. A primary differential signal is delayed and the delayed and non-delayed signals are...
|
|
|
5903316 |
Information signal processing apparatus
According to an information signal correction processing apparatus of the invention which includes a plurality of clip circuits, a knee circuit, an adder, and a controller, an information signal...
|
|
|
5898464 |
Image outline enhancing method and circuit thereof
A method which can be used to enhance an outline of an image displayed in an image display apparatus such as a television receiver, and a circuit performing the method. The circuit includes a...
|
|
|
5894329 |
Display control unit for converting a non-interlaced image into an interlaced image and displaying the converted image data
Disclosed are a display control unit and a control method therefor, for permitting images provided by a plurality of video image sources to overlie, whereby an area of an overlying image plane...
|
|
|
5894330 |
Adaptive anti-flicker method for VGA to TV data conversion
An adaptive anti-flicker data conversion system for converting picture data in a video graphic adapter for displaying on a television. The conversion system reduces flickers adaptively according to...
|
|
|
5872605 |
Video signal processing apparatus
A video signal processing apparatus includes an equalizer for delaying an input color signal by an adjustable phase retardation. A low pass filter is operative for delaying the input color signal...
|
|
|
5847774 |
Video signal peaking circuit
A circuit for peaking video signals, which can be developed by combining a video signal with a peaking signal having a preshooting and a overshooting potion that are respectively controlled in...
|
|
|
5844627 |
Structure and method for reducing spatial noise
A digital filter for noise reduction selects between local variances obtained from adjacent pixels in the same frame and adjacent pixels in the same field. In one embodiment, the digital filter...
|
|
|
5835159 |
Video special effect generator
A video special effect generator comprises a first mixer supplied with an input video signal indicative of an input image, a delay circuit for delaying an output video signal supplied thereto from...
|
|
|
5825434 |
Method and circuitry for providing a clear profile of image data displayed in an electro-optic device
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...
|
|
|
5815605 |
Image processing system and method
An image processing method of the invention is used for dividing each pixel of binary image data into pixels, with of the pixels having a size smaller than each pixel of the binary image data. The...
|
|
|
5805238 |
Adaptive notch filter for removing residual subcarrier from component video
The 25 Hz offset present in the subcarrier frequency of the PAL television standard causes residual and phase modified subcarrier to be left on the luminance signal, which can produce undesirable...
|
|
|
5784104 |
Automatic focusing device using a video aperture signal in low contrast situations
An automatic focusing device which uses a video aperture signal in low contrast situations includes an extraction circuit for extracting a signal corresponding to a degree of focus from an input...
|
|
|
5777689 |
Method and apparatus for video signal sharpening
A video sharpening circuit for improving video signal detail or providing a unique visual effect extracts the high frequency portion from an input video signal. The high frequency portion is then...
|
|
|
5767900 |
Digital apparatus for contour enhancement of video signal
Digital processing apparatus for correcting an image enhancement signal having a shape includes a peak detector for detecting and holding peak levels of the image enhancement signal and an...
|
|
|
5764305 |
Digital signal processing apparatus and method
As processing a digital information signal (a digital video signal etc), the improvement in the accuracy of the signal process can be made by integrating the time region process and the frequency...
|
|
|
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...
|
|
|
5734757 |
Post-processing method and apparatus for use in an image signal decoding system
A post-processing filtering apparatus for use in an image signal decoding system, capable of improving the image quality of the system, comprises: memory means for storing the decoded image data of...
|
|
|
5699126 |
Picture definition apparatus for video display equipment
A picture definition apparatus for video display equipment comprising a first filtering circuit for extracting a high-frequency component from an input video signal, an amplifier for amplifying an...
|
|
|
5696852 |
Image signal processing apparatus
An image signal processing apparatus of the present invention is an apparatus to process image signal, wherein an input image signal is corrected and made into a sharp and visually preferred image...
|
|
|
5668606 |
Contour restoration apparatus
A contour restoration apparatus has a plurality of delay circuits connected in series. Maximum and minimum value detection circuits detect maximum and minimum values among an input video signal and...
|
|
|
5650828 |
Method and apparatus for detecting and thinning a contour image of objects
A method for detecting and thinning a contour image of an object in a video frame comprises the steps of: (a) calculating edge magnitudes for pixels in the video frame and detecting edge points,...
|
|
|
5644366 |
Image reproduction involving enlargement or reduction of extracted contour vector data for binary regions in images having both binary and halftone regions
When an image is input, that input image is separated into a halftone region, such as a photograph, and a binary region, such as a character/line. Contour vector data along an edge of the separated...
|
|
|
5638134 |
Digital filter for picture data and digital filter system
A digital filter for picture data is disclosed which has a first low-pass filter having relatively steep cut-off characteristics for filtering input digital picture data, a second low-pass filter...
|
|
|
5635991 |
Color signal processing system for a color television receiver
A color signal processing system for a color television receiver which can improve the transition characteristic of a color difference signal, using the transition region of a luminance signal. The...
|
|
|
5615019 |
Television apparatus with built-in optical disk device
A television apparatus with a built-in optical disk device for reproducing a video signal recorded on an optical disk to make a display. By disposing the optical disk device apart from the high...
|
|
|
5612750 |
Line contour enhancing circuit for use with video signals
A line contour enhancing circuit comprises a second order differentiation circuit for effecting a second order differentiation to a video signal and producing a second order differentiation signal,...
|
|
|
5600381 |
Scan velocity modulation circuit
A television receiver includes a scan velocity modulation circuit. An amplitude correction circuit couples vertical and horizontal parabola signals to the scan velocity modulation circuit so as to...
|
|
|
5587745 |
Adjustment of scan velocity modulation concurrent with the amount of transition rise time, pre-shoot, and overshoot of a video signal
A microprocessor generates an output signal in accordance with user controlled sharpness selection. The output signal is supplied to a video processor and to a scan velocity modulation circuit for...
|
|
|
5581306 |
Vertical scaling for digital image data with aperture correction
A method of improving the sharpness of horizontal edges of an image that has been vertically scaled. The scaled signal, which represents a series of pixel values, is used to derive an aperture...
|
|
|
5559563 |
Waveform response improvement circuit
A waveform response improvement circuit including first to fourth delay circuits for sequentially delaying an input signal by respective predetermined delay times, circuits for obtaining an...
|
|
|
5555029 |
Method and apparatus for post-processing decoded image data
A post-processing filter apparatus for use in an image signal decoding system, capable of improving the image quality of the system, comprises a memory for storing decoded image data of a current...
|
|
|
5550936 |
Image processing system
In an image processing system, an outline correction of image data and a smoothing for noise removal are performed. Generally, the outline correction is performed by emphasizing a high frequency...
|