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| Number | Title | Issue Date |
| 7362895 | Image processing apparatus, image-taking system and image processing method An image processing apparatus capable of properly correcting an image component corresponding to non-image-forming light and generated in image data or the like obtained when an object having high luminance is taking. The image processing apparatus processes image d... | 04/22/2008 |
| 7327807 | Method for controlling generation of transmission power control information, method of controlling characteristics of receiver circuit based on overflow information, and CDMA communication apparatus A wireless communication apparatus capable of minimizing a danger involved in transmit power control based on control information containing errors and securing reliability of a system. In this apparatus, an overflow error detector and a reception state monitoring s... | 02/05/2008 |
| 7242384 | Image processing device, and image display device provided with such an image processing device In an image display device, how R, G, and B light is emitted to display an image on a display panel is measured with a sensor, and, according to the measurement value obtained from the sensor, the power with which to drive a light source that supplies light needed f... | 07/10/2007 |
| 7106386 | Device and method for improving picture quality A picture quality improvement device has two-dimensional low-pass filter that takes as input a luminance signal YIN that is obtained from a video signal and that extracts low-pass components for a vertical direction and a horizontal direction of the input luminance ... | 09/12/2006 |
| 7088388 | Method and apparatus for calibrating a sensor for highlights and for processing highlights A method and apparatus for calibrating a sensor for highlights and for processing highlights is described. In an embodiment, a method includes identifying highlight regions in an image of a scene. The method further includes calculating flare intensity values for th... | 08/08/2006 |
| 6965417 | Signal processor An object of the present invention is to provide a signal processor which improves the offset accuracy of a video signal without increasing the number of bits of a circuit. An N-bit adder (103) adds a video signal (S101) and an upper-N-bit signa... | 11/15/2005 |
| 6912321 | Method of compensating a digital image for the effects of flare light A method for compensating a digital image for the effects of flare light in order to generate an enhanced digital image operates upon a source digital image derived from an original scene affected by imaged flare light, wherein the source digital image includes a pl... | 06/28/2005 |
| 6246445 | Brightness correcting circuit and method for efficiently correcting brightness at edge and corner of monitor screen A brightness correcting circuit and method for efficiently correcting the brightness of the edges and the corners of a monitor screen are provided. The circuit for correcting the brightness of the monitor screen which operates according to the brightness ... | 06/12/2001 |
| 6072540 | Brightness control apparatus for video display appliance A brightness control apparatus for a video display appliance which keeps the brightness of the picture uniformly over the whole screen by determining the amplification rate of the video signal to be displayed at the corners of the screen relatively higher... | 06/06/2000 |
| 6069660 | Automatic black level stabilizing apparatus An apparatus for automatically stabilizing the black level of a displayed picture when (1) an automatic black level stabilizing function is OFF, (2) black level error occurs between at an ON state and at an OFF state and (3) black level variation and pict... | 05/30/2000 |
| 5905541 | Television picture image processing apparatus A television picture image processing apparatus includes a horizontal edge gate pulse generator, a vertical edge gate pulse generator, an AND combiner for ANDing horizontal and vertical edge gate pulses applied thereto respectively from the horizontal and... | 05/18/1999 |
| 5410365 | Video camera with coarse analog and fine digital black level adjustment In an image pick up device, signal level of red, green and blue color signals is coarsely adjusted in a signal processing circuit, and then a black level of video signal is finely adjusted in a digital signal processing circuit, thereby being capable of e... | 04/25/1995 |
| 5280354 | Video camera with flare correcting circuit A video camera equipped with an image sensor for producing an analog video signal, an A-D converter for converting the analog video signal to a digital video signal in a manner that any component thereof above a predetermined luminance level is clipped, a... | 01/18/1994 |
| 5155586 | Method and apparatus for flare correction A method and system for digitally performing flare correction on digitized color film images. Each digitized image may include a red data stream, a blue data stream, and a green data stream collectively corresponding to a digitized color image (or frame).... | 10/13/1992 |
| 5049989 | Method and circuit for reducing the influence of a bright image area in an endoscope image signal A method and circuit reduces the influence of a bright image area in an endoscope image signal. From the endoscope image signal, a signal component of the bright image area of a level difference from the periphery above a predetermined value and a spatial... | 09/17/1991 |
| 4974810 | Flare light compensation A system for compenating for flare light in an optical imaging system comprising a detector for detecting light from an image and producing a signal related to the amount of light detected, a flare light detector for viewing the flare light and producing ... | 12/04/1990 |
| 4829381 | System and method for electronic image enhancement by dynamic pixel transformation A system and method are provided for continuously enhancing electronic image data received in a continuous stream of electronic information signals wherein the electronic information signal corresponding to each pixel of the image recorded is selectively ... | 05/09/1989 |
| 4825294 | Anti-flaring video output amplifier circuit and technique An RGB video output drive amplifier is provided with current limiting circuitry at the base of the driver circuit. In a preferred embodiment, the driver circuit comprises a drive transistor with associated biasing circuits. The base of the drive transisto... | 04/25/1989 |
| 4631576 | Nonuniformity correction system for color CRT display A system for the correction of nonuniformities in both color and brightness as provided for the correction of such nonuniformities in a color CRT display. The system employs correction signals which are obtained by photographing a white screen of the disp... | 12/23/1986 |
| 4589019 | Digital adder including counter coupled to individual bits of the input An adder circuit is described for producing signals representative of the sum of large numbers of block-synchronized digital signals each of which may have any value within the range of quantizing levels represented. The adder circuit includes one or more... | 05/13/1986 |
| 4422095 | Video tone control circuit A video tone control circuit is implemented in an integrated circuit and comprises a sharpness control for differentiating a rise and fall of a video signal for controlling the amplitude of a high frequency component in the thus obtained video signal with... | 12/20/1983 |
| 4302777 | Flare compensation circuit for television A flare or scattered light compensation circuit for television, wherein a controllable signal difference amplifier is present to a first input of which a picture signal, affected by flare or scattered light, is applied, a compensation signal obtained by s... | 11/24/1981 |
| 3975586 | Automatic low frequency gain limited circuit for eliminating signal suppression in an A-C coupled video processing system A means of eliminating signal suppression in an A-C coupled video process system by an automatic low frequency gain limiting circuit means. The low frequency gain limiting circuit means comprises a summing amplifier that simultaneously sums the original ... | 08/17/1976 |
