Using Look Up Table Patents (Class 345/601)
  • Patent number: 7889387
    Abstract: A device model object which numerically constructs colorimetric measurements based on access to a spectrally-based device profile. In situations where a color management module issues a request for spectral measurements, then the device model object provides spectral measurements directly from the spectrally-based device profile. However, in situations where the color management module issues a request for colorimetric measurements, then the device model object numerically constructs colorimetric measurements based on numerical integration of spectral measurements from the spectrally-based device profile against a viewing condition white point. The constructed measurements are provided to the color management module and they are also cached for possible future use. In this way, the device model object is able to support requests for both measurement-based device profiles and spectrally-based device profiles.
    Type: Grant
    Filed: December 22, 2006
    Date of Patent: February 15, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventor: John S. Haikin
  • Publication number: 20110012920
    Abstract: A color conversion device (100) according to the present invention generates color data (24) in a second color gamut based on first converted color data (22) and input color data (21), which are obtained from input color data (20) in a first color gamut, and outputs the color data (24) in the second color gamut, the color conversion device (100) including: a first color mapping unit (11) which generates the first converted color data (22) by mapping the input color data (21) into the second color gamut; a color mixing unit (12) which generates color data (23) by mixing the first converted color data (22) and second converted color data (25) at a ratio corresponding to the first color gamut and the second color gamut; and a color data output unit (13) which outputs the color data (23).
    Type: Application
    Filed: March 11, 2009
    Publication date: January 20, 2011
    Applicant: PANASONIC CORPORATION
    Inventors: Katsuo Saigo, Hiroshi Miyai, Hisakazu Hitomi, Masanobu Inoe, Masahiro Kawashima, Akihiro Takeuchi
  • Patent number: 7869088
    Abstract: Methods and apparatus for determining a preferred size for a Link LUT as used in conversion from an input color space defined by an input ICC profile into an output color space defined by an output ICC profile. The Link LUT may be incorporated within a device link structure as generally defined in the ICC specification or within a Link Color Conversion CMR in an AFP architecture system. The preferred size is determined from the size of an input LUT associated with the input ICC profile and the size of an output LUT associated with the output ICC profile. In AFP architecture systems, the input and output LUTs and profiles may each be incorporated in appropriate Color Conversion CMRs. The preferred size is determined as a reduced size that requires less computation to generate but does not cause loss of accuracy in conversion between the input and output color spaces.
    Type: Grant
    Filed: December 28, 2007
    Date of Patent: January 11, 2011
    Assignee: Infoprint Solutions Company, LLC
    Inventor: Yue Qiao
  • Patent number: 7859547
    Abstract: A method and an apparatus for adjusting a display parameter are provided. The method includes the steps of: (a) calculating a scene change value between a current frame and a previous frame; (b) setting a first weight according to the scene change value; (c) calculating an original parameter of the current frame; (d) providing a display parameter of the previous frame; (e) calculating a display parameter of the current frame according to the first weight, the original parameter, and the display parameter of the previous frame.
    Type: Grant
    Filed: September 25, 2007
    Date of Patent: December 28, 2010
    Assignee: Himax Technologies Limited
    Inventors: Shing-Chia Chen, Ling-Hsiu Huang
  • Patent number: 7860339
    Abstract: The invention is a visual processing device having a hardware configuration that does not depend on achieving visual processing, wherein the visual processing device includes a spatial processing portion and a visual processing portion. The spatial processing portion performs predetermined processing with respect to an input signal IS that has been received as input, and outputs the result as an unsharp signal US. The visual processing portion outputs an output signal OS, which is the input signal IS after the visual processing, based on a two-dimensional LUT that lists a relationship between the input signal IS, which that has been received as an input, the unsharp signal US, and the output signal OS.
    Type: Grant
    Filed: September 10, 2004
    Date of Patent: December 28, 2010
    Assignee: Panasonic Corporation
    Inventors: Haruo Yamashita, Akio Kojima, Toshiharu Kurosawa, Yasuhiro Kuwahara, Tatsumi Watanabe, Yusuke Monobe, Takeshi Ito
  • Patent number: 7847973
    Abstract: A system and method that provide full color mapping of video images with minimal distortion to the image. A two-dimensional look up table may be used to map a certain number of colors, and for colors that are not represented by entries in the table, the four closest entries to the desired color may be interpolated to provide mapping for the color, thus achieving full color mapping. The method may also provide the ability to map colors in partial bypass and full bypass conditions. In a full bypass condition the color goes through the system unchanged, and the system may be capable of mapping the brightness of the color by interpolating the luminance values of the closest table entries.
    Type: Grant
    Filed: April 15, 2004
    Date of Patent: December 7, 2010
    Assignee: Broadcom Corporation
    Inventor: Brian Schoner
  • Patent number: 7843599
    Abstract: For each combination of color material signals corresponding to an input image signal, a total color material use amount is calculated. On the other hand, on the basis of a predetermined target color, total color material use amounts are set which vary smoothly in accordance with a variation in the target color. Then, a determination is made as to which one of all the combinations of color material signals determined as described above corresponds to one of the set total color material use amounts which is the same as the total color material use amount corresponding to the input image signal. This combination is outputted to a printer as the optimum combination of color material signals corresponding to the input image signal.
    Type: Grant
    Filed: July 28, 2003
    Date of Patent: November 30, 2010
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiromitsu Nishikawa, Kazuhiro Saito
  • Patent number: 7830550
    Abstract: A method of converting a color image into a monochromatic image, includes converting the color image into a color space representing brightness values and attribute values of pixels constituting the color image, converting the color image into the monochromatic image based on the brightness values of the pixels, and modifying brightness values of pixels of the monochromatic image based on eigenvalues corresponding to the attribute values of the pixels of the color image.
    Type: Grant
    Filed: May 10, 2007
    Date of Patent: November 9, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Mi-jung Jang
  • Publication number: 20100277502
    Abstract: Disclosed are various embodiments of a display device. The display device includes an LED RGB backlight as well as a color gamut mapping engine configured to adjust a plurality of input values and output a plurality of adjusted input values to an LCD panel having a native transfer function such that the transformation of the adjusted input values to visible light displayed by the LCD panel can comply with various output device specifications.
    Type: Application
    Filed: April 30, 2009
    Publication date: November 4, 2010
    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: John W. Frederick, Robert L. Myers, David Allen Prouty
  • Patent number: 7826111
    Abstract: Disclosed is color conversion method using a color look-up table. The method includes the steps of: generating a color look-up table using information on the difference of each channel before and after a conversion of each color; and converting the colors using the generated color look-up table. The step of generating the color look-up table includes identifying the maximum difference value among several difference values and generating a first compressed table to initially compress the difference values using the maximum difference value.
    Type: Grant
    Filed: December 8, 2006
    Date of Patent: November 2, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seok-Jin Won, Sung-Dae Cho, Young-Min Jeong, Yun-Je Oh
  • Patent number: 7821659
    Abstract: When there is an object of a color plate which is different than a process color, it is confirmed whether or not Color (n), which corresponds to that color name Spot (n), is a spot color. If Color (n) is a spot color, CMYK value conversion is carried out from a LUT of that spot color, and CMYK values are composed in a region for output. If Color (n) is a process color, CMYK values thereof are stored in a region for CMYK color correction. After color correction is carried out on the CMYK values of the region for CMYK color correction, they are composed with CMYK values of the region for CMYK output. Color information when a color plate different than a process color is included, is generated.
    Type: Grant
    Filed: January 14, 2005
    Date of Patent: October 26, 2010
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Mari Kodama, Ryuichi Ishizuka, Yasushi Nishide
  • Publication number: 20100259555
    Abstract: According to color measuring apparatus and method and a liquid crystal display system S of the present invention, intensity signals obtained by receiving radiant light from a liquid crystal color display 3 at a first viewing angle and corresponding to at least three mutually different spectral responsivities are converted into information on a plurality of primary color intensities of the liquid crystal color display 3, and the intensity signals by the first viewing angle are corrected to signal intensities by a second viewing angle. Thus, these color measuring apparatus and method are capable of a more accurate measurement even at a dark gradation. The liquid crystal display system can more accurately calibrate a display surface 3a of the liquid crystal color display 3 even at a dark gradation.
    Type: Application
    Filed: April 5, 2010
    Publication date: October 14, 2010
    Inventors: Kenichiro HIBI, Kazuya Kiyoi
  • Patent number: 7777759
    Abstract: An image processing apparatus of the present invention comprising (a) a first signal processing circuit for applying gamma correction to an n-bit (n: a natural number) digital signal inputted as a video signal and for converting the n-bit digital signal into an m-bit (m>n, m: a natural number) digital signal, and (b) a second signal processing circuit for adding a noise signal, which is used for pseudo contour reduction, into the m-bit digital signal from the first signal processing circuit and for outputting a Q-bit (Q: a natural number) digital signal, which is obtained from rounding off a less significant (m?Q) bit (Q?n) from the m-bit digital signal, to a display section.
    Type: Grant
    Filed: October 7, 2005
    Date of Patent: August 17, 2010
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yasuhiro Yoshida, Hiroyuki Furukawa
  • Patent number: 7777760
    Abstract: A display color-correcting system is provided. Color response values are measured that go into the vertices of polyhedra in a cubic color output space of the display. A set of corresponding values for the display is built from intermediate values determined between the measured color response values. The intermediate values are determined by decomposition and interpolation of interpolation volumes in the cubic color output space. Each of the interpolation volumes is the combined volume of a selected polyhedron within the cubic color output space and a predetermined volume of space between the selected polyhedron and the next polyhedron within the cubic color output space. The set of corresponding values is converted into decoupled RGB adjustment values that specify the RGB signals independently for the display to produce corrected colors. The RGB adjustment values are saved into one or more look-up tables.
    Type: Grant
    Filed: June 29, 2007
    Date of Patent: August 17, 2010
    Assignee: Apple Inc.
    Inventors: Gabriel G. Marcu, Wei Chen
  • Patent number: 7755641
    Abstract: A method and system are disclosed for decimating an indexed set of data elements to generate a decimated set of data elements. The indexed set of data elements are grouped into groups of at least two data elements per group. The indexes of the data elements in each group are used to address a look-up-table (LUT) that is pre-programmed to perform the decimation operation. For each group of data elements presented to address the LUT, a decimated data value is output from the LUT. The decimated data value is a function of the data values of the corresponding data elements addressing the LUT.
    Type: Grant
    Filed: August 13, 2002
    Date of Patent: July 13, 2010
    Assignee: Broadcom Corporation
    Inventors: Steven Tseng, Chris Tsang
  • Patent number: 7750921
    Abstract: When printing image data obtained by an input device, the present invention is intended to effectively utilize the color reproduction area of the printer. An image data processing method of the present invention comprises the steps of scale-down shifting a first color space point outside a maximum color reproduction area of an output unit to a second color space point within the maximum color reproduction area of the output unit; computing an amount of shift by which the first color space point is shifted to the second color space point; converting the second color space point to a third color space point within a color reproduction area smaller than the maximum color reproduction area of the output unit; and outputting an image to the output unit using image data obtained by scale-up shifting the third color space point to a fourth color space point within the maximum color reproduction area of the output unit based on the computed shift amount.
    Type: Grant
    Filed: March 10, 2006
    Date of Patent: July 6, 2010
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yuji Akiyama, Makoto Torigoe, Manabu Yamazoe, Ryosuke Iguchi, Takashi Fujita
  • Patent number: 7751081
    Abstract: A method of gamut mapping includes the steps of defining a mapping function establishing a continuous first derivative of change of at least one color space component from a first color gamut to a second color gamut, and applying the function to first color gamut data for the at least one color space component.
    Type: Grant
    Filed: March 31, 2003
    Date of Patent: July 6, 2010
    Assignee: Lexmark International, Inc.
    Inventors: Xuan-Chao Huang, Anna Yaping Deer, Brant Dennis Nystrom, Richard Lee Reel
  • Publication number: 20100164979
    Abstract: An image forming apparatus includes a table storing unit that stores a first color Look Up Table; a table extracting unit that extracts the first color Look Up Table stored in the table storing unit; a table download unit that downloads a second color Look Up Table from an external storage medium; a table backup unit that stores the first color Look Up Table extracted by the table extracting unit in the external storage medium when the table download unit downloads the second color Look Up Table; and an image process unit that performs an image process based on the second color Look Up Table.
    Type: Application
    Filed: October 2, 2009
    Publication date: July 1, 2010
    Applicant: Kyocera Mita Corporation
    Inventor: Tomohiro Kawasaki
  • Patent number: 7742058
    Abstract: An output color profile, such as an ICC output profile, contains a look-up table to separate the color of a pixel, for example a CIELAB color, into a set of colorant values, for example CMYK colorants. In practice, most CMYK images have been separated using one of a limited set of standardized output profiles. The problem to be solved is guessing which one of these standardized output profiles has been used to separate a specific image. For this purpose the CMYK values of the image are analyzed. The analysis involves calculating a distance in the CMYK space between the CMYK values of an image, and the CMYK values produced by different output profiles. A profile is selected based on these distances, for example by selecting the profile yielding the shortest distance. This profile is then used for converting the CMYK colorant values of the image into CIELAB color values.
    Type: Grant
    Filed: January 24, 2007
    Date of Patent: June 22, 2010
    Assignee: Agfa Graphics NV
    Inventors: Marc Mahy, Paul Delabastita
  • Patent number: 7733355
    Abstract: A method of and apparatus for transforming a three color signal into a multi-color signal. A method of transforming a color signal having three color components into a color signal having first through n-th color components, includes: producing a lookup table having signal values of (n-3) of n color components of a color within a three-dimensional color space and reference variables corresponding to the signal values of the (n-3) color components; extracting the reference variables from an input color signal; determining the signal values of the (n-3) color components corresponding to the extracted reference variables from the lookup table; and producing a color signal having n color components using the determined signal values of the (n-3) color components.
    Type: Grant
    Filed: April 29, 2005
    Date of Patent: June 8, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyunwook Ok, Seongdeok Lee, Changyeong Kim, Wonhee Choe
  • Patent number: 7732694
    Abstract: A portable music player apparatus that outputs visual content to a head-worn transmissive display, the visual content being modulated in time with playing musical content and overlaid upon the user's direct view of his or her physical surroundings. In this way, the user is provided with an enhanced visual view of his or her physical surroundings, the enhanced visual view including transmissive visual content that is generally synchronized in time with the playing music content. This provides the user with an improved music listening experience in which he or she feels present within a visually enhanced version of the physical world that has changing visual qualities that are perceptually synchronized in time with one or more features of the playing music. The displayed visual content may include time-varying translucency and/or color-tinting such that the user's direct view of the physical world changes in brightness and/or color tinting in a manner choreographed with the playing music.
    Type: Grant
    Filed: January 25, 2007
    Date of Patent: June 8, 2010
    Assignee: Outland Research, LLC
    Inventor: Louis B. Rosenberg
  • Patent number: 7733335
    Abstract: A bistable electro-optic display has a plurality of pixels, each of which is capable of displaying at least three gray levels. The display is driven by a method comprising: storing a look-up table containing data representing the impulses necessary to convert an initial gray level to a final gray level; storing data representing at least an initial state of each pixel of the display; receiving an input signal representing a desired final state of at least one pixel of the display; and generating an output signal representing the impulse necessary to convert the initial state of said one pixel to the desired final state thereof, as determined from said look-up table. The invention also provides a method for reducing the remnant voltage of an electro-optic display.
    Type: Grant
    Filed: February 27, 2006
    Date of Patent: June 8, 2010
    Assignee: E Ink Corporation
    Inventors: Robert W. Zehner, Holly G. Gates, Alexi C. Arango, Karl R. Amundson, Joanna F. Au, Ara N. Knaian
  • Patent number: 7728844
    Abstract: This invention relates to a method for improving image quality of a digital image captured with an imaging module comprising at least imaging optics and an image sensor, where the image is formed through the imaging optics, the image consisting of at least one color component. In the method degradation information of each color component of the image is found and is used for obtaining a degradation function. Each color component is restored by said degradation function. The image is unprocessed image data, and the degradation information of each color component can be found by a point-spread function. The invention also relates to a device, to a module, to a system and to a computer program product and to a program module.
    Type: Grant
    Filed: July 9, 2004
    Date of Patent: June 1, 2010
    Assignee: Nokia Corporation
    Inventors: Mejdi Trimeche, Markku Vehviläinen
  • Patent number: 7728847
    Abstract: A color conversion device includes a three-dimensional lookup table and an interpolation unit. The interpolation unit includes a plurality of operation circuits for realizing an operation process.
    Type: Grant
    Filed: February 14, 2007
    Date of Patent: June 1, 2010
    Assignee: Seiko Epson Corporation
    Inventor: Fumio Koyama
  • Patent number: 7714875
    Abstract: A method and system of determining the screen capability and rendering the appropriate display attribute is herein described. The present invention performs this task by using a color table, which contains a list of object types and a corresponding list of display attributes. The application program obtains the correct display attribute for the object by calling the color table, giving it an identifier of the object. The color table is indexed by the identifier of the object and a screen capability flag that is obtained, in one embodiment, from the operating system. The color table provides the display attribute for the specified object based on the screen capability flag. Advantageously, the application program does not need to know the computer's display capability. Furthermore, the application program needs only one piece of computer code, regardless of the number of display capabilities which are possible. Thus, memory space in the palmtop is conserved.
    Type: Grant
    Filed: July 11, 2006
    Date of Patent: May 11, 2010
    Assignee: PalmSource Inc.
    Inventors: Roger Flores, Steve Lemke, Bob Ebert, Jeff Parrish
  • Patent number: 7714874
    Abstract: Disclosed are a color management method, an apparatus thereof and a color management computer program for executing the method that enable a user to conveniently and easily select and/or change colors desired by the user in diverse ways. The color management method includes displaying a color scheme list that is a list of color schemes for providing a standard for converting the colors that constitute an image, and if a selection manipulation of one among the color schemes that constitute the displayed color scheme list is input, storing the color scheme selected by the selection manipulation.
    Type: Grant
    Filed: November 8, 2005
    Date of Patent: May 11, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Mi-jung Jang, Kyeong-man Kim, Hyun-soo Oh
  • Patent number: 7706034
    Abstract: What is provided is a system and method for node set construction and look-up table generation to transform image data in the form of color values of an input color image in an input color space to an output color space of an image output system. In the present method, node locations are selected based upon an importance value generated by a significance function which describes a relative importance of a given color value in the input image or a region thereof. A distance weighting function is also provided which is applied to the significance function to balance the significance of a given node against a relative positioning of all other nodes in the multi-dimensional grid. Nodes can be added or deleted according to methods also described herein. Accordingly, a multi-dimensional look-up table is generated wherein node tiling is based upon a significance of color values of an input image.
    Type: Grant
    Filed: September 11, 2007
    Date of Patent: April 27, 2010
    Assignee: Xerox Corporation
    Inventors: Vishal Monga, Raja Bala
  • Patent number: 7701465
    Abstract: It is desired to adopt gamut mapping using a color appearance space in the processing system of an ICC profile. Upon generating an LUT complying with the ICC profile format, when CIEL*a*b* values are converted into CIEXYZ values, and the XYZ values are converted into color appearance space values using color appearance conversion formulas, a point which can be converted and becomes a nearest neighboring point for a point that satisfies a predetermined condition is retrieved, and corresponding color appearance space values are calculated. The obtained color appearance space values are mapped on a predetermined device gamut.
    Type: Grant
    Filed: March 23, 2005
    Date of Patent: April 20, 2010
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takahiro Suzuki, Osamu Yamada
  • Patent number: 7701451
    Abstract: An embodiment may include an apparatus comprising a controller for a display system, a first look up table containing data for the controller to operate the display system, and a second look up table with data that is offset from the first look up table data to preserve memory space in the controller. An embodiment may be a method comprising storing color data in a first look up table, storing color data in at least one offset look up table, the at least one offset look up table using offset values from the first look up table, and controlling a display with the first look up table and the at least one offset look up table.
    Type: Grant
    Filed: July 29, 2005
    Date of Patent: April 20, 2010
    Assignee: Pixelworks, Inc.
    Inventors: Lee Daewon, Abhay Gupta
  • Publication number: 20100091034
    Abstract: The color management module includes a first color converter color-converting color information contained in an image signal having been input according to a three-dimensional LUT; an interpolator generating a synthetic image signal by synthesizing an image signal converted by the first color converter and an image signal having been input in an arbitrary ratio; and a second color converter color-converting color information on the synthetic image signal in the HSV space and outputting the color information.
    Type: Application
    Filed: December 14, 2009
    Publication date: April 15, 2010
    Applicant: PANASONIC CORPORATION
    Inventors: Keizo MATSUMOTO, Masanobu Inoe, Hisakazu Hitomi
  • Patent number: 7693337
    Abstract: An alpha image encoding and decoding scheme operable according two different modes is disclosed. In the encoding, an alpha image is decomposed into alpha image blocks (600) comprising image elements (610). The blocks (600) are compressed into block representations (700) according to one of the two compression modes. A block representation (700) comprises a color codeword (720), an intensity codeword (730), an alpha codeword (740) and a sequence (750) of image element associated indices indicative of one of the codewords (730, 740). The compression and decompression mode to use for a block (600) is determined based on the alpha codeword (740). In a high alpha-resolution mode, the index sequence (750) comprises alpha indices selecting one of the quantized alpha values (740A, 740B) of the alpha codeword (740) and intensity indices selecting an intensity modifier from a modifier set represented by the intensity codeword (730).
    Type: Grant
    Filed: December 17, 2004
    Date of Patent: April 6, 2010
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Jacob Ström, Tomas Akenine-Möller
  • Patent number: 7692666
    Abstract: Systems and techniques support color management of an image with a parameterized image color space. In general, in one implementation, a color profile that conforms to a defined color profile architecture and that defines a multistage color space transform is generated. The image includes a parameterized encoding of an image color space with image parameters defining a range and an offset of an image component of the image, and a white point of the image color space. Generation of the color profile involves affecting two or more stages of the multistage transform based on the image parameters. Image processing precision can be increased by fitting output to input data scopes between two or more stages. The image parameters of the parameterized encoding can define ranges, offsets, and bit depths of image components of the image, and the color profile can be a bit-depth independent color profile.
    Type: Grant
    Filed: April 7, 2004
    Date of Patent: April 6, 2010
    Assignee: Adobe Systems Incorporated
    Inventors: Michael Bourgoin, Lars U. Borg
  • Patent number: 7688330
    Abstract: A color profile generation method and apparatus are provided, in which at least one of a reference color and a color table of the reference color on a display screen of an image forming device is displayed and at least one of the reference color and the color table that is not displayed on the display screen is printed, a similar color is determined using the reference color and the color table, and a color profile is generated corresponding to the determined color. Accordingly, color of an image displayed on a display screen of an image forming device are matched with colors of an image printed on a printing medium.
    Type: Grant
    Filed: October 23, 2006
    Date of Patent: March 30, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sang-hyun Park, Seong-il Park
  • Patent number: 7688333
    Abstract: An apparatus including a first circuit, a second circuit and a third circuit. The first circuit may be configured to collect color statistics. The second circuit may be configured to sort colors based upon the color statistics collected by the first circuit. The third circuit may be configured to generate a mapping function between the sorted colors and a color space of a receiving standard.
    Type: Grant
    Filed: February 28, 2007
    Date of Patent: March 30, 2010
    Assignee: LSI Corporation
    Inventors: Gregory R. Maertens, Diego Vianello
  • Patent number: 7679619
    Abstract: A data outputting method is provided which is capable of reducing a memory capacity of a LUT (Look-Up Table). Compressed data obtained by dropping low-order bits making up gray-level data is stored in a manner in which the compressed data can be accessed by high-order bits to be input to the LUT. High-order bits making up an address output from an address supplying unit are supplied to the LUT and low-order bits are supplied to a computing unit. The LUT outputs compressed gray-level data corresponding to the high-order bits and compressed gray-level data corresponding to data of (high-order bit+1). The computing unit outputs each of expanded gray-level data obtained by dividing data obtained by interpolation among one expanded gray-level data, another expanded gray-level data and, third expanded data for every high-order bit based on one compressed data, other compressed data, and lower-bits.
    Type: Grant
    Filed: November 18, 2005
    Date of Patent: March 16, 2010
    Assignee: NEC LCD Technologies, Ltd.
    Inventors: Kouichi Ooga, Tsuyoshi Ichiraku
  • Publication number: 20100053201
    Abstract: There is provided a method of changing a theme for a user interface of a computer system comprising receiving an identification of an image with which to define a color palette of a theme for rendering elements of a user interface on a color display of the computer system; analysing the image to determine at least one predominant color; and defining the color palette in response to the analysis. The image may comprise a background image selected by a user for display by the computer system. Dynamic generation of the color palette matches the user interface to colors to provide flexible and appealing themes. A computer readable memory having recorded thereon instructions to carry out this method is also provided, as well as a device comprising such memory.
    Type: Application
    Filed: November 13, 2009
    Publication date: March 4, 2010
    Inventors: Gerhard Dietrich Klassen, Shaul S. Wisebourt, Lawrence Edward Kuhl
  • Patent number: 7659910
    Abstract: The invention discloses a hue dividing and judging device including a memory unit, a calculation module, and a judgment module. The memory unit is used for storing a look-up table, and the look-up table records N boundaries, wherein the N boundaries includes j+1 operative boundaries for defining j color areas. The calculation module is used for calculating the hue of each pixel of an input image. According to the look-up table, the judgment module is used for judging where the hue of each pixel falls within two of the operative boundaries, so as to judge that the hue of the pixel of the input image falls into which one of the color areas. Accordingly, if there are more operative boundaries recorded in the look-up table, the hue will be divided into more color areas, and the user will have more choices for adjusting the color of the input image.
    Type: Grant
    Filed: March 22, 2007
    Date of Patent: February 9, 2010
    Assignee: Marketech International Corp.
    Inventors: Kai-Hsiang Hsu, Yi-Chia Shan, Tsan-Hung Tsai, Hsu-Chia Kao
  • Patent number: 7656554
    Abstract: A method for correcting neutral color shift in a production cartridge for use in an imaging system includes determining a colorant increment data based on a standard cartridge neutral variation signature color data and a standard cartridge neutral sensitivity signature color data associated with a standard cartridge, and based on a production cartridge neutral variation signature color data and a production cartridge neutral sensitivity signature color data associated with the production cartridge, and using the colorant increment data to correct the neutral color shift.
    Type: Grant
    Filed: June 25, 2004
    Date of Patent: February 2, 2010
    Assignee: Lexmark International, Inc.
    Inventors: Anna Yaping Deer, Xuan-Chao Huang, Brant Dennis Nystrom, Richard Lee Reel
  • Patent number: 7656415
    Abstract: A system, a method and computer-readable media for aggregating curves. An aggregated curve is generated by associating input values from a first curve with output values from a second curve. This aggregated curve may be used, for example, to apply multiple curve effects to a digital image.
    Type: Grant
    Filed: April 28, 2006
    Date of Patent: February 2, 2010
    Assignee: Microsoft Corporation
    Inventor: Denis C. Demandolx
  • Patent number: 7643032
    Abstract: A method and system for rendering three-dimensional graphics, including text, provide a compressed texture bitmap. The texture bitmap may represent multiple symbols, each comprised of multiple pixels. Each pixel in the texture bitmap may store information for more than one symbol, including compressed pixels corresponding to multiple distinct symbols. For example, the compressed texture bitmap may have n-bit pixels (e.g., 8-bit pixels) that each store m (e.g., four) n/m-bit (e.g., 2-bit) compressed values. The compressed texture bitmap may be configured for unpacking by a conventional pixel shader, such as a pixel shader that does not typically perform bitwise operations. The unpacking may include matching a fetched pixel to a value in a lookup table, such as a 32-bit value from a 256-color palette. The looked-up value can be separated into separate sub-values to facilitate processing by the pixel shader.
    Type: Grant
    Filed: November 2, 2004
    Date of Patent: January 5, 2010
    Assignee: Microsoft Corporation
    Inventors: Michael Scott Wetzel, Michael Austin
  • Patent number: 7633509
    Abstract: A liquid crystal display (LCD) including an LCD panel and a driving unit is provided. The LCD panel has a red pixel, a green pixel, and a blue pixel. The driving unit is applied for receiving a red data signal, a green data signal, and a blue data signal, and outputting a red voltage signal, a green voltage signal, and a blue voltage signal for driving the red pixel, the green pixel, and the blue pixel respectively. When the red data signal, the green data signal, and the blue data signal all correspond to a specific gray level, the pixel luminance of the blue pixel is lower than the pixel luminance of the red pixel as well as the pixel luminance of the green pixel.
    Type: Grant
    Filed: October 20, 2008
    Date of Patent: December 15, 2009
    Assignee: CHI MEI Optoelectronics Corp.
    Inventors: Wang-Yang Li, Ying-Hao Hsu
  • Patent number: 7619639
    Abstract: The invention pertains to an adaptive scaling technique. A look-up table of optimized filter coefficients is used to configure a multi-tap filter when scaling a video image. The look-up table reflects the scaling between standardized video source (input) resolutions and video display (output) resolutions. When an actual scaling factor does not correspond to an optimized operating point, a device driver determines which two scaling factors reflected in the look-up table are closest to the actual scaling factor. A set of interpolated filter coefficients for the multi-tap filter is then generated from the optimized filter coefficients associated with the two closest scaling factors. One advantage of the disclosed technique is that scaling operations are performed using filter coefficients interpolated from filter coefficients optimized for two similar scaling operations. Thus, the technique provides more precise filtering relative to prior art designs, resulting in higher-quality scaled video images.
    Type: Grant
    Filed: September 12, 2005
    Date of Patent: November 17, 2009
    Assignee: NVIDIA Corporation
    Inventors: Hassane S. Azar, Mihai Sipitca
  • Patent number: 7605824
    Abstract: A color selection and coordination system including a database of predetermined color relationships implementing a data-driven color model. A starting color is associated with a first color in the color database. One or more predefined color palettes associated with the first color may be retrieved, each palette including one or more coordinating colors, the coordinating colors being predetermined based on the first color and a color coordination algorithm.
    Type: Grant
    Filed: April 23, 2007
    Date of Patent: October 20, 2009
    Assignee: Behr Process Corporation
    Inventors: Damien Reynolds, Mary Rose Rice, Marc Webb
  • Patent number: 7602402
    Abstract: A method of displaying color objects for the screen control display is provided. First, a plurality of elements and son elements on a screen control display respectively to a first level list and a plurality of second level lists is provided. Each of said elements of said first level list includes said son elements each of which composed of a foreground object and a background object in said second level lists. Then, a color mapping table having a plurality of group indexes is provided. Each of said group indexes is mapped into a corresponding palette having a plurality of color indexes. Finally, each of said elements with said group index and said color index is mapped for displaying colors of said foreground object and said background object of said element composed of said group index and said color index respectively.
    Type: Grant
    Filed: November 16, 2006
    Date of Patent: October 13, 2009
    Assignee: Via Technologies, Inc.
    Inventor: Cheng-Wei Chuang
  • Publication number: 20090244563
    Abstract: Systems and methods are provided for dynamically converting first color data to second color data using a look-up table, wherein the first color data is a subset of a first color space, and the second color data is a subset of a second color space. In some embodiments, at least one first color value is input in the first color data. At least one look-up table entry may be calculated for the at least one first color value in the first color data, if the look-up table entry has not been previously calculated. The at least one calculated look-up table entry may be stored. At least one value in the second color data, which corresponds to the at least one first color value, can be computed based on the at least one first color value and the stored value of the at least one look-up table entry.
    Type: Application
    Filed: March 27, 2008
    Publication date: October 1, 2009
    Inventor: Kurt Nordback
  • Patent number: 7596645
    Abstract: A method for automatically adapting to the capabilities of a data transmitting terminal a device supplying data to said terminal requesting the data. The method is characterized in that the data supplying device receives information concerning the capabilities of the device requesting data to send to the latter the data to be transmitted in accordance with the specified capabilities.
    Type: Grant
    Filed: July 26, 2000
    Date of Patent: September 29, 2009
    Assignee: T-Mobile Deutschland GmbH
    Inventor: Rainer Hillebrand
  • Patent number: 7589743
    Abstract: One system includes at least one input channel, an octant determining unit, an angle determining unit, and an angle offset unit. Each input channel receives chroma components of image data. The octant determining unit determines which octant a given image data occupies. The angle determining unit determines a hue angle of the given image data within an octant. The angle offset unit adjusts the hue angle for the image data according to the octant the image data was determined to occupy.
    Type: Grant
    Filed: August 2, 2005
    Date of Patent: September 15, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Michael Francis Higgins
  • Patent number: 7586640
    Abstract: The invention achieves giving high color reproducibility to a color signal with reliability without substantially increasing circuit scale. A signal processing unit of the invention includes a color transformation part which multiplies an inputted color signal by a transformation matrix and an element setting part setting an element group of the transformation matrix according to every inputted color signal. The element setting part comprises an identification unit identifying a color of the color signal, a storage unit storing in advance optimum element groups for a predetermined number of reference signals, and an interpolation unit. The interpolation unit performs interpolation computing based on the input signal, two optimum element groups for two of the reference signals of colors close to a color of the color signal, and color relation between the color signal and the two reference signals to determine an element group to be set.
    Type: Grant
    Filed: September 13, 2002
    Date of Patent: September 8, 2009
    Assignee: Nikon Corporation
    Inventor: Hideo Hoshuyama
  • Patent number: 7576750
    Abstract: A method and an arrangement for optimizing the luminance characteristic curve for a display system using a lookup table. Digitized video levels are supplied to this lookup table and are optimized using correction values stored in the lookup table. With suitable means, the luminance characteristic curve can be easily adapted to standards and/or custom specifications. The memory requirement is low, since it is not necessary to provide different lookup tables for different ambient luminosities or selected reproduction models (curves).
    Type: Grant
    Filed: August 23, 2004
    Date of Patent: August 18, 2009
    Assignee: EIZO GmbH
    Inventors: Wolfgang Eckhardt, Andreas Kaercher, Uwe Nagel, Hartmut Schulz
  • Patent number: RE41631
    Abstract: Gamma correction or other power Power functions and other self-similar functions are generated for correcting the light intensity for digital pixels implemented in hardware. Two levels of mapping of segments are preformed to reduce the total number of segments for a given precision. The A range of inputs is divided into successively smaller segments. Two levels of mapping of segments are performed. Each segment is smaller than the next by a factor of 1/a for a first or primary level, or 1/b for a second level of segments. All inputs are mapped of scaled up to the input range of the largest segment in the primary level. Then the largest primary segment is further divided into several second-level segments, and the input is again mapped or scaled into the largest of the second-level segments. Gamma correction The function is performed on the input scaled into the largest second-level segment. A linear approximation within the largest second-level segment is used.
    Type: Grant
    Filed: September 14, 2006
    Date of Patent: September 7, 2010
    Inventor: Tao Lin