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| Number | Title | Issue Date |
| 7355753 | Color saturation adjustment A method of adjusting primary color data values including producing color saturation adjusted primary color data values that depend on a relative amount of chroma in the initial primary color data values. ... | 04/08/2008 |
| 7349009 | Vector waveform correction device A phase shifter (70) for correcting the phase of a sub-carrier signal input into a decoder to a burst signal has a phase shift setting (5), a correction amount setting (9′), a phase shifter (6) and a 90-degree phase shifter (7). ... | 03/25/2008 |
| 7339595 | Method and system for improved internet color The present invention provides a technique for providing color corrected images to a user over a network. In particular, the present invention allows multiple image providers to provide color corrected images to a user when the user's computer and its associated dev... | 03/04/2008 |
| 7250985 | Color demodulation circuit A color demodulation circuit that can complement an unstable state of an output from an ACC circuit and can obtain stable color-difference outputs, regardless of a burst signal in a chrominance carrier signal. Normally, a selector connects an output from a first mul... | 07/31/2007 |
| 7158191 | Video signal processing apparatus Example burst signal sampling circuitry including synchronous separator circuit(s), waveshaping circuit(s), bandpass amplifier circuit(s), and burst separator circuit(s) is provided in order to extract burst signal(s) from video signal(s) output from video amplifier... | 01/02/2007 |
| 7158271 | Image processing apparatus R, G and B signals read by a 4-line color CCD sensor are converted into C, M and Y color signals. A black-and-white signal is generated from a luminance signal read by the 4-line color CCD sensor. Densities of the C, M and Y color signals are converted on the basis ... | 01/02/2007 |
| 7143207 | Data accumulation between data path having redrive circuit and memory device Memory apparatus and methods accumulate data between a data path and a memory device. A memory agent may have a data accumulator between a redrive circuit and a memory device or interface. The data accumulator may accumulate data to or from the redrive circuit. Othe... | 11/28/2006 |
| 7084802 | Signal processing circuit A signal processing circuit can obtain a ratiometric output with high precision and high responsiveness in a relatively easy and simple way. A pulse generation circuit generates a pulse signal corresponding to an input signal. An integration part generates an integr... | 08/01/2006 |
| 7062092 | System, method, and computer software product for gain adjustment in biological microarray scanner Systems, methods, and computer program products are described for adjusting the gain of a scanner. The scanner includes one or more excitation sources, an emission detector having a first gain, and a variable gain element having a second gain. One described method i... | 06/13/2006 |
| 6947099 | Automatic chroma control circuit with controlled saturation reduction An ACC system includes a controllable amplifier having an input coupled to receive a chroma input signal and an output for providing an chroma output signal of controllable amplitude. A first feedback path, including a cascade connection of means for providing a sig... | 09/20/2005 |
| 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 |
| 6888579 | Method and system for tint control for component video signals A method and system are provided for controlling tint of component video signals. The system includes a first input for receiving a first component video signal; a second input for receiving a second component video signal; circuitry including a first differential a... | 05/03/2005 |
| 6822694 | Signal processing apparatus According to the signal processing apparatus of the present invention, in a text signal processing circuit, predetermined signal processes are executed to a luminance signal Y and color difference signals U and V in which a ratio of sampling clocks is equal to (4:4:... | 11/23/2004 |
| 6753908 | Linear matrix circuit The invention provides a linear matrix circuit which can control linear conversion of color reproduction with a comparatively small number of parameters, which conform with a feeling of a human being, by means of a circuit of a comparatively small scale using a comp... | 06/22/2004 |
| 6449421 | Video signal processor having a reduced number of oscillation units A video signal processor which includes a reference signal generating circuit provided with at least an oscillation circuit for generating a reference signal corresponding to a burst signal and a Y/C separation circuit for separating a video signal into a... | 09/10/2002 |
| 6449020 | Chrominance signal amplitude regulation device A device for regulating the amplitude of a chrominance signal includes a variable gain amplifier having an input receiving a sub-carrier signal, and an output providing a regulated sub-carrier signal. The gain of the amplifier is controlled by two regulat... | 09/10/2002 |
| 6392713 | Digital processing amplifier A procamp to color transforms component digital video data. The procamp includes a digital multiplier coupled to receive component digital video data corresponding to at least two different pixel parameters. The digital multiplier is configured to selecti... | 05/21/2002 |
| 6229580 | Image color correction apparatus and recording medium having color program recorded thereon The invention provides an image color correction apparatus by which a hue in a desired region in a color image can be corrected to a desired hue readily. Based on a hue and a hue range designated, a color approximation degree hx of each of noticed pixels ... | 05/08/2001 |
| 6025885 | Process for color transformation and a color video system In a process for color transformation from the input-side primaries (R, G, B) to image-side primaries (R", G", B") with a greater color stimulus specification region than that given by the input-side primaries (R, G, B), a color transformation is carried ... | 02/15/2000 |
| 6016167 | Method of color correcting digital video data A method of color correcting digital video data 21 is disclosed, comprising the steps of providing a workstation 22 connected to a source 20 of digital video data, analysing video data at the workstation 22 and making decisions relating to color correctio... | 01/18/2000 |
| 5953059 | Color signal processing circuit with hue/gain control and frequency conversion mechanisms A color signal processing circuit of a camera DSP chip for use with a CCD includes a matrix circuit for converting color signals from the CCD into R-G and B-G signals, a hue/gain controlling circuit for multiplying the R-G signal by a R-hue coefficient an... | 09/14/1999 |
| 5949496 | Color correction device for correcting color distortion and gamma characteristic A color correction device is disclosed for correcting color distortion in a displayed television image. Internal circuitry of a television receiver has a color signal distortion characteristic, and the cathode ray tube (CRT) in the television receiver has... | 09/07/1999 |
| 5905396 | Clamp pulse circuit A clamp pulse generating circuit comprising a synchronizing decision circuit for deciding whether an external synchronizing pulse is being input or not; an exclusive-OR circuit, a change-over switch and a pulse width detecting circuit for deciding whether... | 05/18/1999 |
| 5563666 | High luminance color suppression circuit It is an object to avoid suppression of color signals before a green color signal G reaches a saturation detection level Gdet or before each of color signals R and B reaches its saturation level to thereby substantially faithfully reproduce color of an ob... | 10/08/1996 |
| 5532757 | APC and ACC processing using common circuitry Chrominance signals of a digitized composite video signal are processed by including automatic phase control and automatic chroma control operations that use circuit elements that are concurrently available for both operations as well as for other signal ... | 07/02/1996 |
| 5452017 | Method and apparatus for electronic image color modification using hue and saturation levels The color modification system receives standard red, green and blue signal values and outputs modified red, green and blue values in accordance with operator modification of the signals. To increase processing speed and minimize the amount of required mem... | 09/19/1995 |
| 5448424 | AGC circuit and recording and reproducing apparatus using AGC circuit An AGC circuit is provided with a variable gain amplifier which changes an amplification gain of an input signal in accordance with an instruction; an extraction unit for extracting a value of an output of the variable gain amplifier at a predetermined in... | 09/05/1995 |
| 5446504 | Image signal processing apparatus having function for compressing dynamic range and correcting color saturation An input section receives an image signal including signals related to colors to output at least a luminance signal component of the image signal. A compressing section compresses the dynamic range of the luminance signal component from the input section.... | 08/29/1995 |
| 5432564 | Digital chrominance signal processing circuit for converting between high-band converted chrominance signals, low-band converted chrominance signals, and color difference signals A reproducing circuit converts a low-band converted chrominance signal into digital signals for reproducing processing and outputs a high-band converted chrominance signal. In this reproducing circuit, the digitalized low-band chrominance signal is separa... | 07/11/1995 |
| 5359368 | Demodulating a line locked digital color television signal A line locked digital color demodulator separates the V and U color components and the burst signal and uses a ROM for providing phase shifts to the V and U demodulation axes. During the burst time of an NTSC signal, the color component axes are shifted b... | 10/25/1994 |
| 5337083 | Digital video camera suppressing low-saturation chrominance A digital video camera includes a pseudo-saturation calculating circuit by which a pseudo-saturation corresponding to an actual saturation is calculated on the basis of two color difference signals, and a suppression coefficient is calculated by a suppres... | 08/09/1994 |
| 5305084 | Heterodyne interferometer According to the present invention, there is provided a heterodyne interferometer comprising a laser oscilator, a frequency modulator which splits the laser beam into two beams and causes the beams to have different frequencies, a photodetector which comp... | 04/19/1994 |
| 5305094 | Digital video signal color detector, corrector and method The color balance, hue, saturation, luminance, and other parameters of digital video signals are corrected entirely in the digital domain. Correction signals are combined with the digital video signals and new digital video signals are created to replace ... | 04/19/1994 |
| 5087966 | Digital gamma correction A digital color corrector for a color component of a video signal is operable to effect gamma, gain and black level correction. The gamma correction k is applied to a multiplier receiving the input signal E. Black level correction B is applied to an adder... | 02/11/1992 |
| 5051929 | Electronic memory state reallocation system for improving the resolution of color coding video systems The present invention provides means and methods for generating high resolution color computer generated graphic elements, such as lines, circles and curves, using a modified color-under coding system. A portion of the original luminance grey scale is rea... | 09/24/1991 |
| 4951127 | Digital color-signal-processing circuit that provides independent processing of hue and saturation components in a color television A digital color-signal-processing circuit generates a phase-angle signal and a magnitude signal as outputs in response to an R-Y color-difference signal and a B-Y color-difference signal. The circuit includes a resolver which convertes cartesian coordinat... | 08/21/1990 |
| 4847679 | Multiplex chrominance gain control and matrix using a single multiplier and a coefficient shift register A digital chroma signal processing apparatus wherein control signals represent the burst period, the image period and the remaining period of a digital chrominance signal. A multiplier receives a selected one of an ACC signal and the chrominance signal, m... | 07/11/1989 |
| 4809059 | Chroma control circuit for a digital television receiver In a chroma control circuit for a digital television receiver, the system clock lies in the range of four-times the chrominance-subcarrier frequency. The originally received color-burst signal is locked in frequency and phase to the system clock by means ... | 02/28/1989 |
| 4689665 | Gated control circuit The invention relates to a gated control circuit for controlling an input signal, for example the chrominance signal formed by the color synchronizing signal and the color difference signal of a FBAS signal. The chrominance signal is controlled in depende... | 08/25/1987 |
| 4673970 | Chrominance signal processing system A chrominance signal processing system includes a variable gain amplifier capable of effecting gain control for amplifying a carrier chrominance signal and an A/D converter for effecting an analog/digital conversion of an output of the variable gain ampli... | 06/16/1987 |
