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| Number | Title | Issue Date |
| 7428021 | Image processing method, recording medium and apparatus for performing color adjustment to image data using a brightness component, a low-frequency brightness component, and first and second parameters An image processing method aims to optimally improve a brightness distribution with respect to brightness of a face being a main subject of a person image. Thus, the method consists of: a brightness component extraction step of extracting a brightness component from... | 09/23/2008 |
| 7271851 | Adaptive color transient improvement A superior Color Transient Improvement technique is adaptive to the local image features, so that more natural color edge transition improvement can be accomplished. A gain control function is provided that depends on the local image feature so that different region... | 09/18/2007 |
| 7206348 | Twisted pair communications line system A transmission system for transmitting analog color video signals wherein a cable comprising multiple twisted pairs is employed, and certain of these pairs are coupled to carry selected color signals as a function of the delay provided by particular twist rates. In ... | 04/17/2007 |
| 7027536 | Method and apparatus for designing finite-length multi-input multi-output channel shortening pre-filters A multi-input, multi-output pre-filter improves operation of a multi-input receiver by shortening the effective memory of the channel with a set of FIR filters. The coefficients of these FIR filters can be fashioned to provide a variety of controls by the designer, ... | 04/11/2006 |
| 6987542 | Detection and correction of asymmetric transient signals The invention relates to a method and apparatus for detecting asymmetry in transient signals and to a method and apparatus for correcting such asymmetry. In the apparatus for detecting asymmetry there is provided a pre-shoot filter (1) for receiving an input ... | 01/17/2006 |
| 6970207 | Anti-flicker filtering process and system A process of filtering digital images to reduce image flicker. An anti-flicker filtering is performed after a step of calculating the image and before a step of displaying the image so that the flicker is filtered as soon as the image is created. ... | 11/29/2005 |
| 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 |
| 6940559 | Color reproduction correction circuit for color representation and a color display The color reproduction correction circuit which corrects the color distortion caused when color signals using the first combination of the three primary colors are reproduced in a color display of the second combination of the different primary color sources has bee... | 09/06/2005 |
| 6925181 | Method of protecting high definition video signal A system controls reproduction of a video transmission between a transmitter and a receiver. The system includes an encryptor with an offset generator adapted to receive the encrypted frame key and to generate a sequence of pseudo-random values for the color compone... | 08/02/2005 |
| 6894728 | Method for equalizing a VSB high definition television signal in the presence of co-channel interference A method and apparatus for equalizing a signal containing high definition television information in the presence of co-channel NTSC interference employs an equalizer having feed forward and decision feedback filters. A comb filter is inserted ahead of the equalizer ... | 05/17/2005 |
| 6753930 | Color reproduction correction circuit for color representation and a color display The color reproduction correction circuit which corrects the color distortion caused when color signals using the first combination of the three primary colors are reproduced in a color display of the second combination of the different primary color sources has bee... | 06/22/2004 |
| 6717621 | Method and apparatus for reducing flicker in a video image sequence Briefly, in accordance with one embodiment of the invention, a method of reducing flicker in a video image sequence includes the following. Successive video images are temporally filtered. The filter length is adjusted so as to reduce the amount of filtering across ... | 04/06/2004 |
| 6683379 | Semiconductor device with reinforcing resin layer A semiconductor device including a semiconductor substrate having a thickness of not more than 300 μm and a resin layer formed on a face thereof. A plurality of conductor sections formed in and through the resin layer, and a plurality of electrodes locat... | 01/27/2004 |
| 6600833 | Methodology for color correction with noise regulation A method comprising determining an optimal color correction matrix accounting for both total noise variance and color reproduction error for a captured image; and correcting the colors of said captured image using said optimal color correction matrix.... | 07/29/2003 |
| 6421097 | Method and apparatus for reducing flicker in a video image sequence Briefly, in accordance with one embodiment of the invention, a method of reducing flicker in a video image sequence includes the following. Successive video images are temporally filtered. The filter length is adjusted so as to reduce the amount of filter... | 07/16/2002 |
| 6278192 | Semiconductor device with encapsulating material composed of silica A semiconductor device having enhanced reliability which is obtained by cutting a wafer encapsulated by an encapsulating material layer in such a manner that each of end faces of bumps for an external terminal is exposed, and a method of isolating a metal... | 08/21/2001 |
| 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 |
| 6169583 | Method and circuit to determine a noise value that corresponds to the noise in a signal A method and circuit for determining a noise value that corresponds to the noise in a signal, the signal containing identical signal parts in the noise free signal. Noise values that correspond to the noise in a signal can be used to control noise reducti... | 01/02/2001 |
| 6163346 | Dot crawl reduction in NTSC/PAL graphic encoder By reducing the saturation (amplitude) at changes in the hue (phase) of the chrominance subcarrier of a video signal, the phenomenon of "dot crawl" can be substantially reduced for graphic data. It has been found that large hue (phase) changes associated ... | 12/19/2000 |
| 6040876 | Low intensity contouring and color shift reduction using dither A method and system for reducing the effects of false contouring and reducing color shading artifacts. An image signal 102 is dithered by the addition of a small noise signal from a noise generator 500. The added noise signal breaks up the edges of homoge... | 03/21/2000 |
| 5629742 | Compatible non linear pre-emphasis for composite video signals When a video signal including a component modulated onto a subcarrier (such as a PAL signal) is subjected to a non-linear pre-emphasis known for MAC signals, with the object of reducing the effects of noise encountered in transmitting the composite signal... | 05/13/1997 |
| 5526126 | Signal processor for VTR which converts color under signals to color signals A first reproduced color under signal is delayed by one or two horizontal periods by a delay circuit, and this delayed second reproduced color under signal and the aforementioned first reproduced color under signal have their frequencies converted individ... | 06/11/1996 |
| 5148278 | Filter circuit of the median type for video signals For filter video signals a median selector is used to the inputs of which the sample values of a first pixel and other neighboring pixels. These other pixels lie in the line direction (horizontal) and in a direction perpendicular thereto (vertical) next t... | 09/15/1992 |
| 5124787 | Vertical/horizontal contour correction system A vertical/horizontal contour correction system comprising a vertical contour correction arrangement for separating a luminance signal Y and a chromaticity signal C from a composite video signal inputted therein, performing a vertical contour correction w... | 06/23/1992 |
| 5093725 | Dynamic signal modification for achieving interference reduction in concurrently transmitted signals Apparatus for reducing interference in a first signal caused by a second signal. Before the signals are transmitted, the first signal is tested to determine how much interference can be tolerated. During portions of the first signal which can tolerate a l... | 03/03/1992 |
| 4811097 | Video signal processor In one embodiment, the video signal generator outputs a standardized analog video signal. The signal generator includes a clock controlling a sequential address generator. The address generator activates a memory device that is, for example, a ROM. A dist... | 03/07/1989 |
| 4779133 | Low-noise television system A low-noise televison system having means for suppressing increased noise without reduction of improved picture quality. In the television broadcast transmitter, a television video signal is separated into luminance and chrominance signals and the luminan... | 10/18/1988 |
| 4575749 | Component companding in a multiplexed component system A transmitter applies luminance and chroma components of a color television signal to a transmission path, such as a VTR or satellite, in amplitude compressed form. To obtain optimum improvement in S/N ratio, different compression laws for the luminance a... | 03/11/1986 |
| 4561012 | Pre-emphasis and de-emphasis filters for a composite NTSC format video signal Phase reversal of solely the chrominance component of only alternate frames of an NTSC format signal prior to pre-emphasis and again subsequent to de-emphasis permits simpler and less costly filter structure to be employed without any loss of filtering ca... | 12/24/1985 |
| 4384302 | Composite video signal limiter A filter separates a composite video input signal into luminance and chrominance signal components. The luminance signal component is limited to a range of values defined by first and second reference signals. Excursions in either sense of the chrominance... | 05/17/1983 |
| 4371891 | Chrominance signal processor A frequency selective chrominance signal translating circuit for use in a color television receiver employing a comb filter is disclosed. The comb filter responds to switching signals for providing separate outputs from which the luminance and chrominance... | 02/01/1983 |
| 4359756 | Chrominance signal limiter A filter separates a composite video input signal into luminance and chrominance signal components. DC signals are combined with the luminance signal to produce four control signals, first and fourth ones of which have an AC component inversely proportion... | 11/16/1982 |
| 4316213 | Video processor employing variable amplitude compression of the chrominance component A composite video signal is separated into luminance and chrominance components which are processed in separate channels having transfer functions which differ in terms of frequency response and large signal amplitude response. The luminance channel subje... | 02/16/1982 |
| 4313131 | CCD Comb filter and demodulator A color demodulation and comb filtering system is described for use in a color television receiver. The system includes a pair of charge coupled devices (CCD's) which each receive a filtered video signal and which develop outputs which are delayed, one fr... | 01/26/1982 |
| 4307414 | CCD Comb filter and demodulation system A CCD comb filter and color demodulation system is described for use in a color television receiver. The system includes a CCD comb filter receiving a video signal having interleaved luminance and color components, the latter components including a color ... | 12/22/1981 |
| 4281346 | Complementary pre-emphasis and de-emphasis circuits for a video signal transfer channel Complementary circuits for pre-emphasis and de-emphasis of video luminance signals, the circuits permitting an improved signal-to-noise ratio in a video signal transfer channel. The video signal has separate frequency- and amplitude-sensitive portions as ... | 07/28/1981 |
