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| Number | Title | Issue Date |
| 7254206 | Device and method for comma detection and word alignment in serial transmission The invention is applied in a gigabit network environment. During the process of converting serial data into parallel data, a method is proposed to use the comma pattern in a data pipeline architecture to select word boundaries of a correct data frame from a serial ... | 08/07/2007 |
| 7248749 | Method and apparatus for signal-to-noise ratio dependent image processing Certain embodiments of the present invention relate to a signal-to-noise ratio dependent image processing system. The method includes computing at least one SNR for at least one region of an image, determining a filter parameter for at least one region based on the ... | 07/24/2007 |
| 7185257 | Data transmitting/receiving method in HARQ data communication system There is provided a data transmitting/receiving method in an HARQ data communication system. To transmit a physical layer information stream having a plurality of sub-blocks, each sub-block having an error correction code, a QoS (Quality of Service), and a priority ... | 02/27/2007 |
| 7136446 | Method and apparatus for data and clock recovery in a biphase-coded data signal A method and apparatus for data and clock recovery in a biphase-coded data signal is described, in which the data signal is sampled using a sampling frequency that is greater than twice the bit frequency of the data signal. The bit limits of the data signal are then... | 11/14/2006 |
| 7080312 | Data transformation for explicit transmission of control information The present invention provides a system and method for explicitly transmitting a block attribute in the data of a block. In one embodiment, a current block of data is randomized in accordance with an ID value from the current block and from at least one temporally a... | 07/18/2006 |
| 7068325 | Video signal processor and video signal processing method The present invention relates to a video signal processing device for avoiding a phenomenon that noise is upwardly or downwardly shifted due to noise reducing operation when a non-standard signal is input. When a non-standard signal is input as an input video signal... | 06/27/2006 |
| 7006667 | Apparatus and method for detecting road white line for automotive vehicle In road white line detecting apparatus and method, a CCD camera is installed to photograph a road surface, an edge image is generated from a road surface image photographed and outputted by the CCD camera, edge positions of a smear are detected from a region of the ... | 02/28/2006 |
| 6958785 | Method and apparatus for determining and correcting for illumination variations in a digital projector The need is met according to the present invention by providing a method of correcting pixel by pixel variations in a display, the method including the steps of creating a defect map of pixel intensity offsets for the display; correcting an input signal according 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 |
| 6920600 | Dual chien search blocks in an error-correcting decoder A decoder and decoding method are described, in which a syndrome is calculated from a codeword in a syndrome generator, an error polynomial is generated based upon the syndrome in an error polynomial generator, an error location is determined from the error polynomi... | 07/19/2005 |
| 6912017 | Display device for displaying digital input image data using different filter segments for the lower and higher order bits There is disclosed a display device using a color wheel having a color filter Cw, in addition to normal color filters corresponding to the three primary colors. The filter Cw has almost flat spectral transmission characteristics. Brightness information included in a... | 06/28/2005 |
| 6906704 | Noise elimination method and noise elimination apparatus A noise elimination method of the present invention includes the steps of: detecting a zigzag signal in which a differential value between signal levels of two pixels which are adjacent to each other along a horizontal pixel direction or a vertical pixel direction a... | 06/14/2005 |
| 6859493 | Apparatus and method for the recovery of compression constants in the encoded domain The system and method of the present invention provides an innovative technique and efficient hardware structure for recovering lost or damaged (lost/damaged) compression constants in the encoded domain. In one embodiment, a lost/damaged compression constant is reco... | 02/22/2005 |
| 6847408 | Method and apparatus for reducing noise in an image sequence A method and apparatus for reducing noise in an image sequence is provided. Images in the image sequence are recursively filtered on an area-by-area or, for example, pixel-by-pixel, basis. A pixel from an image is compared to a similarly located pixel from a previou... | 01/25/2005 |
| 6741666 | Device and method for transforming a digital signal A method and a device by which original digital signals are analysis-filtered, where the original digital signals include original samples representing physical quantities, and where the original samples are transformed by successive calculation steps into high and ... | 05/25/2004 |
| 6525776 | Information compressing apparatus and method An information processing apparatus includes an address generation circuit for generating an address signal. A memory operates for storing an information signal containing a video signal in response to the address signal. The address signal is periodicall... | 02/25/2003 |
| 6441867 | Bit-depth extension of digital displays using noise A method for extending bit-depth of display systems. The method includes the steps of measuring the static display noise of a display device, using the display noise to create pseudo-random noise and subtracting the pseudorandom noise from a contone image... | 08/27/2002 |
| 6363118 | Apparatus and method for the recovery of compression constants in the encoded domain The system and method of the present invention provides an innovative technique and efficient hardware structure for recovering lost or damaged (lost/damaged) compression constants in the encoded domain. In one embodiment, a lost/damaged compression const... | 03/26/2002 |
| 6310660 | Video signal dropout detector A method and apparatus for detecting video signal dropout. The method includes the step of generating a video signal, and then electronically isolating at least one component of the video signal. The at least one component is representative of the absence... | 10/30/2001 |
| 6249321 | Device and method for correcting color distortion on TV receiver Device and method for correcting a color distortion on a TV receiver, is disclosed, the method including a multi-path channel estimation step wherein a transmission channel existing between a transmitted side in a broadcasting station and a color demodula... | 06/19/2001 |
| 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 |
| 5900952 | System for converting color image signals having high-frequency components from RGB to CMY color spaces A system for converting original RGB color signals to CMY signals includes the step of separating color signals from the original image into low-frequency and high-frequency components. The low-frequency components are converted to CMY signals via a look-... | 05/04/1999 |
| 5543850 | System and method for displaying closed caption data on a PC monitor An apparatus for capturing and decoding the closed caption data from a television signal and displaying the closed caption data, along with the video picture, in a windowing environment on the monitor of a personal computer system. The closed caption deco... | 08/06/1996 |
| 5541668 | Filter for reducing a noise component of a chrominance signal and chrominance signal noise component reducing method Luminance data Y(1) (i=1,2, - - - ,n, - - - ) are input one by one to a detecting unit, and luminance correlation information R(i-1,i) denoting a luminance correlation or a luminance non-correlation between the luminance data Y(i) and Y(i-1) are generated... | 07/30/1996 |
| 5526062 | Color TV receiver using quadrature-phase synchronous detector for supplying signal to chrominance circuitry In a television system including a source of an intermediate frequency (IF) signal, which signal includes an IF picture carrier amplitude modulated with video information, synchronous demodulator means responds to the IF signal, for providing an in-phase ... | 06/11/1996 |
| 5365604 | Error concealment apparatus for video signal processors Error concealment apparatus for correcting errors in signals representing video images includes means for detecting image gradients in an area surrounding a lost block of image data. Circuitry responsive to these image gradients generates a plurality of b... | 11/15/1994 |
| 5126835 | Method and apparatus for video signal dropout compensation Dropout is compensated in a video signal that has samples comprising respective different color information components in alternate lines and samples comprising luminance information time multiplexed with the color samples in each line. Adders (78, 82) av... | 06/30/1992 |
| 5060053 | Information signal processing device A system is provided for processing an image signal composed of a luminance signal having a second frequency band including a frequency component higher than a frequency component included in a first frequency band and a color signal having the frequency ... | 10/22/1991 |
| 5060056 | Luminance signal/color signal separating circuit and noise reduction circuit using a comb filter A luminance signal/color signal separating circuit comprises a comb filter for Y/C separation. The addition output of the comb filter comprises a luminance signal component, while the subtraction output comprises a color signal component and non-correlati... | 10/22/1991 |
| 4843457 | Drop-out correcting luminance-chrominance signal separation circuit A luminance-chrominance signal separation circuit in which only those values of a digitized video signal which do not manifest drop-out are used for producing a luminance and a chrominance signal from linear combinations of the video signals. Different co... | 06/27/1989 |
| 4706111 | Method of error modification for video data In effecting error modification of component video data having predetermined relationships, for example in the playback side of a digital VTR for the Y, CR, and CB component system, a range of values that is allowable for the data in... | 11/10/1987 |
| 4597008 | Color burst signal improving circuit A signal-to-noise ratio improving circuit for a color video signal comprises an adder supplied with a chrominance signal of an input color video signal, a delay circuit supplied with an output signal of the adder, for delaying the signal supplied thereto ... | 06/24/1986 |
| 4591898 | Signal-dropout correction circuit for correcting video signals disturbed by signal dropouts A dropout correction circuit is described. It comprises a dropout detector which compares a signal with a reference level and controls a switch which connects an output of the circuit to a line memory, in order to insert a corresponding part of a precedin... | 05/27/1986 |
| 4573070 | Noise reduction system for video signals Noise reduction on a video signal is achieved by an adaptive filter system which is capable of automatic changes in filter parameters. This inventive concept includes an automatic method of independently changing both the width and center frequency of the... | 02/25/1986 |
| 4485399 | Method and apparatus approximately correcting errors in a digital video signal Picture points represented by a digital signal that is found to be in error are set to zero (black) value. Incoming 8-bit signals are twice delayed by one line delays, and 8-bit shift registers are provided for the undelayed, once delayed and twice delaye... | 11/27/1984 |
| 4470065 | Adaptive error concealment using horizontal information determination from adjacent lines An adaptive error concealment system uses either a horizontal or vertical average as a replacement pixel for an erroneous pixel. The choice is dependent upon the amount of horizontal information in at least one adjacent horizontal line. This avoids errors... | 09/04/1984 |
| 4464674 | Method and apparatus for concealing errors in a digital television signal The digital signals representing successive picture points of a digital television video signal is caused to pass through, in succession, two delay circuits each providing a delay of one television line interval. This makes three places available where sh... | 08/07/1984 |
| 4434438 | Low cost automatic equalizer A low cost automatic equalizer is provided for reducing the amplitude and phase distortion produced by close-in echos. The color subcarrier burst, or some other portion of the video signal having predetermined amplitude and phase characteristic prior to t... | 02/28/1984 |
| 4398210 | Impulse noise detection circuit for TV signals Impulse noise detection circuitry for determining the occurrence of short noise pulses in TV video signal includes two 1H delay lines to align successive image lines for signal comparison. The amplitude of signal from one image line is compared with the s... | 08/09/1983 |
| 4387389 | Semiconductor filter using charge transfer device A CCD comb filter is provided employing a basic block having a first, a second and a third delay line wherein particular mixing of the signals from the delay lines results in three outputs having a desired ratio. This basic block is utilized to construct ... | 06/07/1983 |
