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| Number | Title | Issue Date |
| 8111332 | Noise suppression method, noise suppression method program, recording medium recording noise suppression method program, and noise suppression apparatus An apparatus for suppressing noise of a video signal. The apparatus includes: a difference-signal generation section generating a difference signal being a field or frame difference between the input and the output video signals; a noise compensation-signal generati... | 02/07/2012 |
| 8059203 | Moving picture processing method Provided is a moving picture processing method which prevents degradation of subjective image quality caused by a motion of a moving picture. The moving picture processing method includes the following steps: a motion compensation step (S116) of shifting a no... | 11/15/2011 |
| 7375741 | Circuit and method for eliminating image interfering with desired channel A circuit and a method for eliminating interference introduced from an image channel into a desired channel is described. The circuit includes a splitter and an adder. The splitter generates signals split from a received signal having frequency components within the... | 05/20/2008 |
| 7368956 | Data slicer with a source-degeneration structure A data slicer with a source-degeneration structure is described. In particular, this invention can be implemented in a FM demodulation system. It located at the end of the demodulator. The data slicer can slice a signal transmitted through air and demodulates the sa... | 05/06/2008 |
| 7366347 | Edge detecting method There is provided an edge detecting method, which is capable of preventing a noise influence caused by imaging device and a color interpolation. The edge detecting method includes the steps of: setting a first kernel based on a center pixel in pixel data arranged in... | 04/29/2008 |
| 7336788 | Electronic book secure communication with home subsystem The invention, an electronic book selection and delivery system, is a new way to distribute books and other textual information to bookstores, libraries and consumers. The primary components of the system are a subsystem for placing text in a video signal format and... | 02/26/2008 |
| 7263135 | Transmitting method and transmitter apparatus A transmitting method and a transmitter apparatus, which need no manual adjustment, are disclosed. A delay amount is automatically adjusted such that an out-of-band distortion component of a transmission signal is minimized, and a correct timing is produced by the m... | 08/28/2007 |
| 7245783 | System and method for estimating, synthesizing and matching noise in digital images and image sequences A method for synthesizing noise in a digital image comprises the steps of (a) estimating noise statistics based on a set of spatial autocorrelation coefficients and a set of spectral correlation coefficients that correspond to the color channels of the image, where ... | 07/17/2007 |
| 7215379 | Alternative video sync detector A circuit for generating video synchronization timing signals includes a negative peak detector (FIG. 5) for following variations of a composite video signal (FIG. 1), rather than clamping the most negative voltage of the composite video signal. The ne... | 05/08/2007 |
| 7190841 | Image noise reduction circuit An image noise reduction circuit includes an image correction portion which is responsive to a timing pulse signal to reduce a noise in an input image signal based on a difference data and to generate a corresponding output image signal, a difference detecting porti... | 03/13/2007 |
| 7185242 | Digital display apparatus supporting error compensation and method thereof Disclosed are a digital display apparatus and method. The digital display apparatus includes a signal intensity detect unit, a tuner unit, a control unit, and a digital signal process unit. The signal intensity detect unit divides a digital input signal received thr... | 02/27/2007 |
| 7158189 | Adaptive non-linear noise reduction techniques An impulse-reducing module (200) reduces random noise in video pixels by providing an impulse detector (244) and an impulse reducer, such as a median filter (250). The impulse detector (244) generates filter control signals in response to... | 01/02/2007 |
| 7139035 | Video noise floor estimator with impulse noise detection A method of detecting both linear and non linear noise in video data. Linear noise is detected on a line-by-line basis, by blocks within each line. Non linear noise is detected during horizontal blanking periods. The method provides a noise floor value for linear no... | 11/21/2006 |
| 7130433 | Noise reduction apparatus and noise reduction method An apparatus for reducing noise component contained in an input signal has: a detecting device for detecting a level of the noise component; an adjusting device for adjusting a level of the input signal so as to make the level of the noise component equal to or lowe... | 10/31/2006 |
| 7110044 | Image detail enhancement system A detail enhancement system uses a detail filter bank including multiple detail filters covering different frequency ranges. An input video signal representing a digital image is processed in the detail filter, wherein detail signals are extracted by the detail filt... | 09/19/2006 |
| 7106385 | Apparatus and method for reducing the visual effects of artifacts present in a line scanned video display On a line scanned video display, the frequency of an artifact producing signal within the video passband is selected to be an odd harmonic of one half the horizontal line scan frequency so that adjacent scan lines of the artifact are 180 degrees out of phase with ea... | 09/12/2006 |
| 7098963 | Method and apparatus for attenuating image noise A method of attenuating noise contained in an image signal according to the extent of the movement of the image signal based on the amount of noise, and an apparatus therefor are provided. This method includes measuring the amount of noise in an image signal by accu... | 08/29/2006 |
| 7064793 | Method and apparatus for measuring the noise contained in a picture To determine the noise contained in a picture, it is proposed first to determine homogeneous picture regions of the picture (100-102) and then to measure the high-frequency signal component in these homogeneous picture regions (BR). The measurement of the hig... | 06/20/2006 |
| 7051937 | System and method for fast binarization of bar codes in the presence of noise A system and method to binarize the bar code image in the presence of noise in order to render bar codes more detectable in the presence of noise. The method of this invention includes the steps of applying a gradient detecting filter to the bar code image, obtainin... | 05/30/2006 |
| 7050650 | User selected background noise removal for scanned document images A system and method of removing background noise from a digital image of a scanned document is described. The system and method is a reversible background noise removal technique that allows a user to select whether background noise is removed or not. In addition, s... | 05/23/2006 |
| 7009662 | Electronic circuit and method for enhancing an image An electronic circuit 100 and method for enhancing an image, in particular, for use in TV-applications, includes a N-dimensional image enhancement filter 130 for receiving an image signal and at least one further image signal, all image signals represe... | 03/07/2006 |
| 7002594 | Image processing apparatus and image display apparatus using same An image processing apparatus of the present invention comprising (a) a first signal processing circuit for applying gamma correction to an n-bit (n: a natural number) digital signal inputted as a video signal and for converting the n-bit digital signal into an m-bi... | 02/21/2006 |
| 6975158 | Noise canceling circuit A low-pass filter eliminates a high-frequency component contained in an input signal. An inverter outputs a signal at a high level or a low level in response to an output of the low-pass filter that is larger or smaller than a threshold level. A one-shot pulse gener... | 12/13/2005 |
| 6958783 | Adaptive non-linear noise reduction techniques An impulse-reducing module (200) reduces random noise in video pixels by providing an impulse detector (244) and an impulse reducer, such as a median filter (250). The impulse detector (244) generates filter control signals in response to... | 10/25/2005 |
| 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 |
| 6947661 | Apparatus and method for reproducing video signals To eliminate unnaturalness in the display of video signals that are intermittently updated. Video signals recorded in a disk 1 in a compressed manner are reproduced through a pickup 2. The reproduced signals are fed to a reproduction processing unit | 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 |
| 6784944 | Motion adaptive noise reduction method and system A method and system of noise filtering is provided. The pixels of a first filter mask are separated into groups based on luminance . . . The sizes of each group is determined and a largest group is selected. The distance of each group of pixels from the largest grou... | 08/31/2004 |
| 6760067 | Imaging apparatus An imaging apparatus includes a CCD for accumulating an image signal by an n-times long-time-accumulation (n is an integer of “1” or more); a timing control circuit for controlling to read out the image signal accumulated in the CCD according to the n-times long... | 07/06/2004 |
| 6728381 | Noise reducing circuit Predetermined frequency components contained in a luminance signal are extracted by BPF (12a)-(12n), and amplified by limited amplifiers (16a)-(16n). As a result, an addition signal, including a luminance signa... | 04/27/2004 |
| 6724437 | Method and device for adding noise to a video signal for improving a display of the video signal In a display driving method, noise is added (NG, AD) to a video signal before the video signal is subjected to a dithering operation (DC). The invention is preferably applied to render non-moving dither patterns invisible in a plasma display panel driving method in ... | 04/20/2004 |
| 6628842 | Image processing method and apparatus The image processing method and apparatus enhance the sharpness of photographic images recorded by a silver halide photographic system or a digital still camera. The method and apparatus determine a blur retaining but sharpness enhancing coefficient for e... | 09/30/2003 |
| 6618096 | System and method for adaptively balancing quadrature modulators for vestigial-sideband generation A digital signal processing vestigial-sideband television modulator receives a television signal. The present invention digitizes the television signal to generate a video signal and a digital processor processes the video signal to generate a complex bas... | 09/09/2003 |
| 6359658 | Subjective noise measurement on active video signal An apparatus and method is disclosed for measuring and filtering noise signals in an active video signal to create an enhanced video signal that produces a video image that is subjectively perceived to be superior to prior art video images. The apparatus ... | 03/19/2002 |
| 6330038 | Video sharpness control device and method A method and device for enhancing the sharpness of a video image. The luminance signal portion of a television signal is boosted in its upper frequency range, e.g., between about 2.0 MHz and about 4.25 MHz. This enhancement of the luminance signal accentu... | 12/11/2001 |
| 6204890 | Noise reducer using memory A noise reducer which applies a time-cyclic type of noise reproduction processing to only a predetermined image signal in an input image signal in the case of applying the time-cyclic of noise reduction processing to the input image signal by using a memo... | 03/20/2001 |
| 6195132 | Noise reduction signal processing circuit and display apparatus A noise reduction signal processing apparatus for reducing noises accurately, such as for use in a display apparatus for displaying a video signal, has a median filter (40) which receives the video signal, and which executes a filter processing on the inp... | 02/27/2001 |
| 6075572 | Multi-dimensional video filters An S/N ratio is improved and flicker noises and mosquito noises are suppressed while deterioration of a resolution is suppressed. A three-dimensional cyclical digital filter (16) is interposed between a MPEG video decoder (12) and a video DAC. In accordan... | 06/13/2000 |
| 5929936 | System for reducing noise in image data through recursive operation A noise reducer to which image data obtained by decoding coding data using a DCT coding is supplied. The noise reduser is comprised as follows. Noise extracting unit for extracting a noise component, first and second noise cancelling unit for cancelling t... | 07/27/1999 |
| 5898919 | Cordless phone back link for interactive television system A system for communicating information from a television viewer to a central site includes a remote control unit for sending command signals from the viewer to a television or video cassette recorder (VCR). Circuitry integral with the television or VCR ac... | 04/27/1999 |
