Abstract: A system and method for managing memory in display processing circuit for use with a color sequential display. The system comprises: a shared memory; and a storage queue coupled to the shared memory, wherein the storage queue includes: a system for receiving and storing alternating packets of color-specific video data in the storage queue; and a system for separately reading contiguous sets color-specific packets from the storage queue to the shared memory.

Abstract: A color signal processing apparatus and method calculate without errors a control vector that is a driving signal of a multi-primary display (MPD) corresponding to an input color signal in order to reproduce the input color signal on the MPD using at least four primary colors. The color signal processing apparatus includes: an XYZ color signal conversion unit; a parallel processing unit that obtains a polyhedron corresponding to a color gamut of the MPD in the CIE-XYZ color space based on an MPD Forward Model, divides the polyhedron into plural pyramids, and outputs intermediate values for calculating the control vector based on the plural pyramids; a restriction condition checking unit that outputs a valid value satisfying a physical restriction condition out of the calculated intermediate values and outputs an index for a pyramid for which the valid value is calculated; a pattern arrangement unit; and a control vector arrangement unit.

Abstract: Video signal sample data that has three values in one color space definition can produce values that are out of range in another color space definition, namely color gamut errors. The invention produces a polar plot with superimposed or added color difference and/or primary color values as a function of hue, as in a vectorscope, but values that when combined by conversion or transcoding may produce gamut errors are combined in the inventive display. Thus, excursion over or under a predetermined limit value identifies the gamut error. The display includes or is switchable between color difference and primary color color space definition variables.

Abstract: Pixels in a YUV format including a Y component representing luminance and U and V components representing chrominance are converted into a RGB format including R, G, and B components respectively representing red, green, and blue colors in order to display images on a video display device such as a CRT (Cathode Ray Tube) or a LCD (Liquid Crystal Display). The present invention relates to an apparatus and a method for converting the pixels from the YUV format to the RGB format using color look-up tables with a small memory capacity. The R component is obtained from the first and second color look-up tables using the Y and V components as indexes, and the G component is obtained from the first, third, and fourth color look-up tables using the Y, U, and V components as indexes, and the B component is obtained from the first and fifth color look-up tables using the Y and U components as indexes.

Abstract: Methods and apparatus including computer program products for combining source images to form a final image, each image being a digital image defined by color component values and a transparency value. The invention performs the steps of receiving two or more source images, each defined by color component and alpha information; assembling a new, mixed image in per-component format by applying a selection operation on the color and alpha information of the source images to define color component and alpha information of the new image according to a source selection definition; and converting the new per-component image into a shared-alpha format to generate the final image in shared-alpha format. In particular embodiments, the selection selects a color value and alpha pair from exactly one source image for each color component of the combined image. The mixed image in per-component format can be converted to a shared-alpha format through use of a matting color.

Abstract: A color conversion apparatus and method is disclosed. The color conversion apparatus converts an input color signal to match a color gamut of the input color signal with a color gamut of a target Multi Primary Display (MPD) using at least four or more primary colors, and comprises a WYV color signal conversion unit for converting the input color signal into a WYV color signal for an output; a color gamut matching gain calculation unit for calculating a matching gain which is a conversion constant for matching the color gamut of the input color signal with the color gamut of the target MPD; a color gamut matching unit for correcting the WYV color signal based on the matching gain; an XYZ color signal conversion unit for converting the corrected WYV color signal into an XYZ color signal for an output; and an MPD control vector calculation unit for calculating a control vector which is a driving signal of the target MPD corresponding to the XYZ color signal.

Abstract: A black and white display device having pixels having a density three times higher in the horizontal direction as in the vertical direction.

Abstract: The present invention embodies high-accuracy white point adjustment with a simple circuit configuration according to an efficient algorithm in a display system for full digital processing. More particularly, the present invention is directed to a digital video interface 13 for inputting a digital video signal outputted from a host system and a liquid-crystal display monitor 11 for applying color conversion to the digital video signal inputted by the digital video interface 13 without using a look-up table, in which an adjusted-value input logic for inputting adjusted values at predetermined points to achromatic colors between maximum- and minimum-gray-scale achromatic colors and a controller LSI 22 for computing a digital video signal inputted by the digital video interface 13 so as to converge chromaticity coordinates for achromatic colors and outputting a computed digital value in a pipeline manner are used.

Abstract: A technique is provided for aligning and formatting multi-operand pixel data, for example, within a pixel formatter of a graphics engine for a set-top box system. The technique includes, in one embodiment, obtaining pixel data of a first alignment and a first format for conversion to a second alignment and a second format. The pixel data undergoes pre-alignment where the first alignment of the pixel data is changed to a bit zero alignment, after which the pixel data is reformatted from the first format to the second format. The reformatted pixel data is post-aligned to change from bit zero alignment to the second alignment. In one embodiment, the pixel data is source pixel data or pattern pixel data, while the second alignment and the second format are alignment and format of destination pixel data.

Abstract: A device, system and method may input data in one or more graphics formats and output the data to a monitor, the monitor typically capable of displaying more than three primaries. The data formats are input, possibly converted or otherwise manipulated, and are output to a monitor. The monitor may be capable of displaying more than one format. One set of data may be displayed in a frame inset within the other set of data.

Abstract: Systems and methods are described for delivering a data stream to a video appliance. The data stream may have a computer video signal, such as provided by the output of a computational device. The data stream is received from the computational device. The computer video signal is converted to a converted television video signal, which is combined with television video signals received from an external source. The combined television video signals are transmitted to the video appliance.

Abstract: A transformation device for remote monitoring a computer display image is described. The transformation device monitors display images of a server on a remote computer display via a network. The transformation device includes an image capture unit and a system-on-chip. The image capture unit captures the display images from the a display cable and transforms the display images into digital image data fulfilling browser safe palette requirements and corresponding synchronization signals to reduce the bandwidth requirements. The system-on-chip transforms the digital image data and the corresponding synchronization signals into network packets and delivers the network packets to the remote computer so as to display instantly the display images of the server on a display of the remote computer.

Abstract: An image transforming method and an apparatus therefor utilizes an extent of color consistency which is defined by R, G and B values and at least one of the disparities of respective couples of R, G and B values of one or more designated picture elements of a color image, and transforms a color image to a monochrome image with picture elements having brightness values each of which is given by a total of deviations of the R, G and B values and at least one of the RB, RG and BG disparities from the extent of color consistency.

Abstract: A plasma display panel with color space transformation device is described. The plasma display panel with color space transformation device has a digital board, a display control circuit and a color plasma display panel. The digital board has a color space transformation device to transform the color space of the color plasma display panel into a new color space according to a video specification of images or into a new color space according to a user requirement. The digital board further modifies the images to fit the new color space. The color plasma display panel shows the modified images in the new color space.

Abstract: An image display system, image processing method, and program that make it possible to reproduce the colors of an image more rapidly in accordance with the user's preferences. The image display system includes: a color gamut calculation section that calculates a target color gamut based on a target profile within a target profile storage section that was selected by the user, and also calculates a displayable color gamut based on a projector profile within a projector profile storage section and environmental information from a colored-light sensor that detects the visual environment; a matrix generation section that generates a conversion matrix according to the relationship between the target color gamut and the displayable color gamut; and a matrix converter section that uses the thus-generated conversion matrix to convert image information; whereby image information is converted and image is displayed.

Abstract: A video data display board, device or method for inputting and displaying video data including vertical blanking interval data containing character data and other image data than the vertical blanking interval data. The video data display device has a data transfer circuit capable of transferring both of the data to devices different from each other, so that the processing of character information and image data are performed by using the different devices which perform an appropriate process according to the property of the data. The processed character and image data are displayed on a graphic display screen simultaneously.

Abstract: Systems and methods are disclosed for hardware assisted format changes in a display controller. One embodiment of the invention relates to a format change system comprising a register DMA controller and a register update list. The register update list contains at least one instruction. The register DMA controller is adapted to obtain and use at least one instruction to configure at least one display pipeline from a plurality of display pipelines in response to at least one trigger event.

Abstract: A method and apparatus for remapping video images from a display processor, represented by a quad-subpixel digital data stream to a striped-subpixel color display using a processor including an intermediate pixel memory where the processor presents an intermediate digital data stream to a resizing engine.

Abstract: In a color conversion characteristic determining method for use with an image display device in which image data is converted on a pixel-by-pixel basis, referring to the color conversion characteristic, and the color-converted image is displayed, a color conversion characteristic candidate is set, and color-converted data are predicted by using input image data, and then tristimulus values of the displayed colors are predicted, and the results are evaluated to judge whether the color conversion characteristic satisfies the requirement. It is possible to make the color conversion characteristic to obtain color reproduction closer to the ideal color reproduction according to a standard, and the color conversion characteristic can be determined in a short time.

Abstract: An image processing system includes a frame store, a processing means and a monitor. The frame store stores a sequence of images from a film or video clip that will eventually be transferred to film for viewing in a theater. The image sequence is processed and possibly combined with other clips, resulting in changes to the color balance, intensity and contrast of the output clip. The image processing system, the monitor and the process of eventual transfer to film, have non-linear transfer characteristics, including gamma characteristics. These are combined in a single look-up table in a graphics card, so that images displayed on the monitor have an appearance matching that of the same images when viewed in the theater.

Abstract: A system for efficiently converting computer graphics images to film images with accurate color management is described. The system involves the creation of a direct mapping of chromaticity and intensity data from the values used to generate images on a computer monitor to the values used to display the images on projected motion picture film.

Abstract: The present invention provides methods and apparatus for the color calibration of displays. These methods are particularly useful for displays having properties different than those associated with cathode ray tubes (CRT). Some displays, for example liquid crystal displays (LCD), have a high luminance black, the chromas of their primaries are not independent of their luminance levels, the intensities of their primaries are not strictly monotonically increasing with respect to their RGB levels, the color additivity of their subpixels is affected by crosstalk or leakage and their color measurements are dependent on the view angle of the observer. Therefore, the usage of CRT methods is deficient for such displays.

Abstract: A method of calibrating a flat panel, includes the steps of: providing a flat panel display having an overall and individual channel adjustment for both gain and offset and an adjustment to provide a white point for the display, the white point including color temperature, chromaticity and luminance level; displaying a first target using a low level code value for each channel of the display; sensing the luminance level of the displayed first target; adjusting the gain of the display so that the sensed luminance level matches a first predetermined aim value representing a luminance level at least 3 decades lower than a maximum luminance level; displaying a second target using intermediate code values for each channel of the display device; sensing the luminance level and chromaticities of the displayed second target; adjusting the individual channel offsets so that the luminance level matches a second predetermined aim value representing an intermediate luminance level and the chromaticities match a first set

Abstract: Systems and methods are provided for color management in connection with a variety of computing devices having different color display characteristics. The X11 graphics platform is augmented to support color management systems, such as ICC, sRGB and scRGB, which begin and end with device dependent colors. CMYK color spaces as well as extended RGB color spaces within X11r6 are also supported, thus extending the X11r6 graphics platform to support any modem color management standard.

Abstract: An apparatus and method for processing color images are provided. The apparatus includes a color conversion unit for white-transforming signals in RGB space. The color conversion unit includes a first white-transforming means for white-transforming signals in RGB space to signals in a predetermined color space using N predetermined illuminant colors, and a second white-transforming means for white-transforming the signals in the predetermined color space to the signals in RGB space using M predetermined color temperatures of the display means, so that a natural color image or an image of a desirable color can be obtained without information with respect to the illuminant.

Abstract: The present invention relates to a web terminal monitor, including a bus switch selectively receiving one of two sets of analog video signals from a computer and analog video signals from a web terminal. With the present invention, the bus can be utilized as a monitor for a personal computer. Also, multi-functional and high-efficient monitor further comprising the function of television can be realized, according to the present invention.

Abstract: After applying gray scale conversion to image data of three colors, six hue data are obtained, and then first comparison-result data and second-order terms each relating to one of the six hues, and second comparison-result data each relating to one of the six inter-hue areas are obtained. Matrix calculation is performed on the first comparison-result data, the second comparison-result data, and the second-order terms, using coefficients. By varying the coefficients, adjustment can be made to only the target hue or inter-hue area, without affecting other hues and inter-hue areas. Thus, the six hues and six inter-hue areas can be varied independently, and the large-capacity memory is not required. Moreover, by the use of the gray scale conversion, the effects of the non-linear characteristics of the input signals are removed.

Abstract: This invention is about a computer add-on card that is capable of transferring MPEG-2 Transport Stream file from a computer storage (hard disk, DVD-ROM, etc.) to an external equipment such as: Digital TV settop box, modulator, etc. Besides handling PCI protocol communication, this add-on card also controls MPEG-2 Transport Stream generation, and signal format and interface conversion. To incorporate various output signal formats and interfaces, a daughter board is implemented as the output signal format and interface converter part. Using this daughter board, user can have various different Digital TV output signals without the need of modifying the application program.

Abstract: The invention provides an input/output (I/O) port assembly of a notebook computer connectable to a monitor or a television (TV), which comprises an image processor, an I/O port, and a signal transmission circuit interconnected between the image processor and the I/O port. When I/O port of the computer is coupled to monitor or TV, signal transmission circuit generates different signal voltage states. As such, image processor can output a correct signal to the coupled monitor or TV based on a change of the signal voltage states. With this, the computer is connectable to monitor or TV via a single I/O port and an adapter connected between the I/O port and monitor or TV.

Abstract: A color space conversion device for executing color space conversion from RGB data to CMYK data comprises a color space conversion circuit, a CMY position detection circuit, three UCR/BG tables, a continuation table and a UCR/BG synthesizer circuit. The color space conversion circuit converts RGB data into C′M′Y′ data. The CMY position detection circuit 2 detects the position of the C′M′Y′ data in the CMY color space with respect to each dot of the C′M′Y′ data. Each of the three UCR/BG tables has been optimized at particular position (in the achromatic color area, an intermediate area, and the high chroma area) in the CMY color space so as to be used for color space conversion from C′M′Y′ data to CMYK data. The continuation table outputs continuation parameters based on the position of the C′M′Y′ data.

Abstract: When video data is odd field data, interlaced data for an even field consisting of all black even line data is appended to that video data by an interlaced data appending circuit. On the other hand, when video data is even field data, interlaced data for an odd field consisting of all black odd line data is appended to that video data by the interlaced data appending circuit. Noninterlaced data generated in this way is noninterlaced-displayed on a display monitor such as an LCD, CRT, or the like.

Abstract: An image data display apparatus includes a terminal display unit, an NTSC display unit, and a frame memory having a first port and a second port, for storing an image data. A display timing control unit generates a terminal display timing signal and an NTSC display timing signal. A frame memory control unit generates a first read control signal in response to the terminal display timing signal such that the image data is read out from the first port of the frame memory, and a second read control signal in response to the NTSC display timing signal such that at least a part of the image data is read out from the second port of the frame memory. A first converting unit converts the image data read out from the first port of the frame memory into a terminal display signal such that the read out image data is displayed on the terminal display unit.

Abstract: A video data processing device which includes a bus, a central processing unit (CPU), a first scaling unit which is coupled to the bus and has an input unit for inputting image data from an external device, and a second scaling unit which is coupled to the bus. The CPU selectively controls the first scaling unit to convert the image data when an amount of the image data is decreased by a conversion performed by the first scaling unit, and selectively controls the second scaling unit to convert the image data when an amount of the image data is increased by the conversion performed by the first scaling unit.

Abstract: Graphics information (such as text, icons, images, etc.) is modified from a received format to a format adapted for displaying the graphics information on a computing device. Modification of the graphics information is based on characteristics of the computing device that represent capabilities of a display of the computing device. The graphics information is generated in a module to convert the graphics information into a format that is suitable for display on the computing device. The module is accessed to obtain the graphics information therefrom. The graphics information is obtained from the module according to the characteristics of the computing device such that the obtained graphics information is in a format adapted for display on the computing device.

Abstract: A method for printing an image on an absorbent substrate using liquid colorants. The colorants are assigned to pixel groups on the substrate surface that define the image. Some colorants are applied to pixels in quantities that exceed the absorption capacity of the substrate. These colorants migrate into adjoining pixels, blending with other colorants in those pixels and forming new, otherwise unavailable colors.

Abstract: Provided is a device that allows a DFE decomposer supported for a particular format, such as ICC profile formats, to utilize multiple transformation databases concurrently. For each database, a software plug-in is created to interpret the specific format of particular databases. The plug-ins convert the contents of the third party database into a common structure understood by a decomposer of a digital front end (DFE). The plug-in interface includes data (i.e. structures) and behavior (i.e. methods) supported by all plug-ins. A plug-in for a supported database (i.e. ICC profile formats) is also provided. An interface between a color control manager and decomposer module is used to inform the decomposer of changes to the supported database. An appropriate plug-in may then retrieve data and update an internal database of the decomposer while the system is operating. Updatings of third party databases occur upon initialization of the system.

Abstract: A video signal processing apparatus which can perform a liquid crystal display without a deterioration of a picture quality even when a CCD sensor of the NTSC system is used at the time of the PAL system is provided. The video signal processing apparatus has a 1H delay circuit and a selecting circuit. Upon PAL system, by switching the selecting circuit once every seven lines and performing a pre-interpolation, the lines are compensated from 485 lines (vertical) of the NTSC system to 575 lines (vertical) of the PAL system. In case of performing the liquid crystal display, the timing of an interpolation (LCOMP) signal is synchronized with the timing of the EN signal upon PAL system so as to coincide the portion of the lines to be compensated from 485 lines (vertical) of the NTSC system to 575 lines (vertical) of the PAL system with the portion to be thinned out at a rate of 1 line per 7 lines in the liquid crystal display.

Abstract: A method and apparatus for display of graphical data is described. The invention provides an architecture for graphics processing. The architecture includes pipelined processing and support for multi-regional graphics. In one embodiment, a graphics driver according to the invention can receive multiple independent streams of graphical data that can be in different graphical formats. The independent streams are synchronized and converted to a common format prior to being processed. In one embodiment, multi-regional graphics are supported with off-screen and on-screen memory regions for processing. The regions of the multi-regional graphic are rendered in an off-screen memory. The data in the off-screen memory are converted to a common format and copied to on-screen memory. The data in the on-screen memory is used to generate an output image. Alpha blending can also be programmed to provide multi-regional graphics or other graphical features.

Abstract: A graphics integrated circuit chip is used in a set-top box for controlling a television display. The graphics chip processes analog video input, digital video input, a graphics input and an audio input simultaneously. The chip includes a display engine that processes graphics images organized as windows. The display engine processes graphics images formatted in any one of a plurality of formats including a color look up table (CLUT) format. A color look-up (CLUT) table loading mechanism preferably facilitates the transfer of real-time CLUT table data during graphics composition. The loading mechanism may be triggered by a window descriptor that contains a color look-up table load command.

Abstract: A computer system and an associated graphics adapter that includes one or more processors connected to a host bus. A system memory is accessible from the host bus via a memory controller and an I/O bridge is coupled between the host bus and an I/O bus. The computer system further includes a frame buffer suitable for storing a representation of a graphic image and the graphics adapter connected to the I/O bus. The graphics adapter includes means for receiving host pixel data that is formatted, according to a host format defining the ordering and width of a set host components, as a set of host component values. The adapter also has means for transforming the host pixel data into frame buffer pixel data where the frame buffer pixel data is formatted, according to a frame buffer format defining the ordering and width of a set of frame buffer components, as a set of frame buffer component values.

Abstract: Scanner density values of a digitized image of an original film are processed so that a projection of the digitized image closely matches that image which a film projector would produce when projecting the original film. A method comprises the steps of transforming the scanner density values to printing density values; digital color balancing by writing the printing density values and a LAD patch onto film; printing the film is printed to LAD; transforming the images from device dependent color space values into device independent color space values; carrying out a relationship between the device independent color space and a display device output to obtain RGB code values; adjusting any non-linearity between the RGB code values and the display device output; and scaling the adjusted RGB code values to an appropriate bit depth.

Abstract: An apparatus and method for converting pixel data from a computer video format to a television-compatible composite video waveform. A color space converter converts RGB or YCrCb pixel data into YUV pixel data. The YUV pixel data is supplied to an encoder which encodes the data into a composite video waveform. A clock generator generates an encoder clock frequency based on the horizontal resolution of the incoming computer pixel data. The encoder clock frequency is sufficient to allow encoding of all incoming pixels in the active video portion of the waveform without physically scaling or altering the pixel data. Sync and burst processors in the encoder encode sync pulses and burst waveforms at proper timing intervals despite the variable encoder clock frequency by accessing sync pulse and burst waveform values and timing parameters appropriate to ranges of clock frequencies that are stored in a ROM.

Abstract: For converting an image from an input device to an image corresponding to the color gamut of an output device, the color gamut of a color signal outside the color gamut of the output device is reduced to a color closer to the color available at the output device.

Abstract: When time-division driving, which allows the number of output pins of a driver IC to be reduced, is applied to an active-matrix LCD apparatus, a time-division number is set to an odd number, preferably to the n-th (n: natural number) power of three, and a time-sequential signal (dot inversion signal) output from the driver IC is time-divided by a time-division switch and sent to signal lines 12-1, 12-2, 12-3, . . . to implement complete dot inversion driving.

Abstract: Picture data composed of a color palette storage address and palette number data is read from memory. On the basis of the color palette storage address, a color palette is taken from among one or more color palettes stored in the memory. The picture data is colored according to the extracted color palette for each piece of the palette number data.

Abstract: Disclosed is a color display driving apparatus that simultaneously on-screen displays an RGB format color image and a YUV format color image on the same color display unit. A first memory for stores YUV data, and a YUV-RGB converter converts YUV data read from the first memory to RGB data. A second memory stores RGB data. An on-screen-display (OSD) controller writes the YUV data and the RGB data in the first and second memories, respectively, mixes the RGB data converted from the YUV data stored in the first memory by the YUV-RGB converter with the RGB data read from in the second memory, and on-screen displays the mixed data.

Abstract: A CPU 20 assumes a virtual color monitor in which actual chromaticity coordinates of colors expressed by fluorescent materials are replaced by virtual chromaticity coordinates having the same hues as those of the actual chromaticity coordinates but higher saturations than those of the actual chromaticity coordinates. The CPU 20 converts colorimetric values X, Y, and Z into luminance-linear values r′, g′, and b′ for red, green, and blue, based on a relationship of color conversion for the virtual color monitor at step S23. The CPU 20 then sets any one of the values r′, g′, and b′ to L at step S24 and compares the value L with i at step S26, where i is the &ggr;-th power of j and greater than 0. In case that the value L is less than i, the CPU 20 calculates a value c based on the remaining values other than the value L among the values r′, g′, and b′ at step S27.

Abstract: A YUV-RGB digital conversion circuit which can be reduced in circuit scale. The YV-R conversion circuit in the YUV-RGB conversion circuit which converts digital luminance signal (Y) and digital color difference signals (U and V) into digital chrominance signals (R, G, and B) computes the R signal by approximately developing the coefficient 1.371 in the expression of R=Y+(V−128)×1.371 in terms of a finite number, 2−n (n: a natural number). The YV-R conversion circuit is provided with a plurality of bit shift circuits (42, 46, 50, 52 and 56) which output the products of input signals and 2−k (k: a natural number of ≦n) by bit-shifting the input signals. A plurality of adders (44, 48, 54, 58, 60, and 62) which perform addition on terms of two sets of products of the input signals and 2−k (k: a multiplier), with the (k) having different values.

Abstract: A display controller assists a host processor in decoding MPEG data. The display controller receives YUV data in non-pixel video format from a host CPU and perform the otherwise CPU intensive task of rasterization within the display controller. In addition, the display controller may use its internal BITBLIT engine to copy U and V data from one line in a BITBLIT operation to adjacent lines, so as to replicate U and V data. A byte mask preserves Y data on the adjacent lines from being overwritten. At the end of the BITBLIT operation, the display controller generates a signal indicating that the frame buffer has been filled with new data, and thus display controller automatically switches to reading from the newly written frame buffer.

Abstract: To realize image conversion processing by means of filtering using a multi-tap structure without requiring that a memory to use has a high-speed capability, a merge circuit 102 merges sampled input image signals for every plurality pieces of continuous pixel data and outputs signals, and a memory element 103 stores approximately one frame of output data from the merge circuit 102. The memory element 103 outputs signals to a memory element 104 in accordance with outputs from a memory element 107 which stores control data which are calculated in advance. The memory element 104 stores a larger number of input signals received from the memory element 103 than the number of taps of a filtering circuit 106, and outputs signals to a selection circuit 105. The selection circuit 105 selects signals required by the filtering circuit 106 from input signals received from the memory element 104 and outputs signals to the filtering circuit 106.