Frame, Field Or Scan Rate Conversion Patents (Class 345/3.2)
  • Patent number: 7589736
    Abstract: A system and method for converting a pixel rate of a digital image frame is provided. The system includes a display controller with an embedded buffer and programmable input and output buffers. The input buffer writes lines of the frame at a source pixel rate while the output pointer reads out lines of the frame at a display pixel rate thereby allowing display of an image having a source pixel rate that is different, e.g., higher, than a display pixel rate.
    Type: Grant
    Filed: May 17, 2002
    Date of Patent: September 15, 2009
    Assignee: Pixelworks, Inc.
    Inventor: Michael G. West
  • Publication number: 20090207098
    Abstract: A portable electronic device capable of displaying high resolution image is provided. The portable electronic device includes: a processor for providing a first video signal and a second video signal, wherein the first video signal is for displaying control options for selection, and the second video signal is generated according to a selected one of the control options; a display panel for displaying a first image with the control options according to the first video signal; a frame rate converter (FRC) for converting the second video signal into a third video signal; and a projector, independent of said display panel, for projecting a second image according to the third video signal, wherein the second image being controlled by the control options displayed on the display panel.
    Type: Application
    Filed: February 29, 2008
    Publication date: August 20, 2009
    Applicant: HIMAX DISPLAY, INC.
    Inventors: Yih-Long Tseng, Yung-Yuan Ho
  • Patent number: 7551185
    Abstract: A generic apparatus (14) re-orders video data for various types of displays, such as plasma discharge panels (PDPs), digital micro-mirror devices (DMDs), liquid crystal on silicon (LCOS) devices, and transpose scan cathode ray tube (CRT) displays. In one embodiment, the apparatus (14) includes a first programmable transpose processor (18), a memory (20, 120), and a second programmable transpose processor (22, 122) fabricated as a single IC unit.
    Type: Grant
    Filed: December 8, 2003
    Date of Patent: June 23, 2009
    Assignee: NXP B.V.
    Inventors: Rob Anne Beuker, Teunis Poot, Gerben Johan Hekstra
  • Patent number: 7496627
    Abstract: A convergence and automation system includes (a) an internet-protocol based network, (b) hardware implemented with a web service for devices (WSD) protocol, wherein the hardware includes a plurality of devices connected to the network, each device being configured to perform at least one service, and a server connected to network and configured to control the devices for converging and automating the services thereof; and (c) software implemented with the WSD protocol and configured to establish communication among the sever and the devices and perform a logging function to record events and errors taking places in the convergence and automation system.
    Type: Grant
    Filed: March 15, 2007
    Date of Patent: February 24, 2009
    Assignee: Exceptional Innovation, LLC
    Inventors: Seale Moorer, Eric Eichensehr
  • Publication number: 20090002264
    Abstract: A display apparatus and a method for driving a display panel thereof are provided. Each column of data line in the display panel has tow sub-data lines. The driving method is described as follows. An input image signal is divided into a plurality of image segments, and each of the image segments has display data of pixels coupled to two adjacent scan lines. Every K image segments are defined as a group. An image signal is formed by inserting a reset data in each group of image segments. Display data of a first group are written in K batches according to a first start wave. After a predetermined time from the first start wave, the scan lines corresponding to the first group are driven at the same time according to a second start wave, and the reset data is output to the first sub-data lines and the second sub-data lines.
    Type: Application
    Filed: August 22, 2007
    Publication date: January 1, 2009
    Applicant: NOVATEK MICROELECTRONICS CORP.
    Inventor: Feng-Ting Pai
  • Publication number: 20080309583
    Abstract: A receiving assembly with a function of displaying scanning images about objects therein comprises a container having at least one receiving unit; at least one scanning unit being installed in the receiving unit for scanning data about objects in the receiving unit and transferring the data; a display unit for receiving data from the at least one scanning unit and displaying the data on a screen of the display unit; the display unit being installed at an exterior of the container; and an operating unit for adjusting display ways of the display unit, and wherein by the display unit to display data from the scanning unit, the object in the receiving unit can be known. The operating unit serves to divide the screen of the display unit into one frame or a plurality of sub-frames and the scanning unit includes a track unit, a driving unit and a scanning assembly.
    Type: Application
    Filed: June 13, 2007
    Publication date: December 18, 2008
    Inventor: CHIH-CHING HSIEH
  • Patent number: 7456816
    Abstract: The invention relates to a lamp frequency control system for a display and method for controlling the lamp frequency. The lamp frequency control system comprises a driving control device and a lamp frequency control device. The driving control device has a driving mode selector for selecting a driving mode from at least two driving modes. According to the selected driving mode, the driving mode selector outputs at least one corresponding frequency control signal. According to the corresponding frequency control signal, the lamp frequency control device obtains at least one corresponding lamp frequency. According to the various driving mode, the lamp frequency control system of the invention obtains the corresponding lamp frequency. That is, the lamp frequency can be adjusted to match the driving mode. Therefore, the lamp frequency can be adjusted at a frequency section without the water flow interference. The lamp frequency control system of the invention can resolve the water flow interference.
    Type: Grant
    Filed: April 7, 2005
    Date of Patent: November 25, 2008
    Assignee: Chi Mei Optoelectronics Corp.
    Inventor: Shih-Ming Chen
  • Publication number: 20080266207
    Abstract: In a method for driving a display device, an address counter is used for generating a plurality of address variables corresponding to data of a scan line. Next, an address mapping circuit generates a first target address by data-mapping an address variable, and generates a second target address by data mapping data stored in an address look-up table memory. Subsequently, a row buffer memory accesses data corresponding to a first scan line based on the first target address, and accesses data corresponding to a second scan line based on the second target address.
    Type: Application
    Filed: June 13, 2007
    Publication date: October 30, 2008
    Inventors: Hsiao-Ming Huang, Chun-Lung Wang, Yi-Lin Yeh
  • Publication number: 20080068295
    Abstract: Implementations of display systems and devices based on scanning light on a light-emitting screen where at least one excitation optical beam is used to excite one or more light-emitting materials on the screen which emits light to form images. The light-emitting materials may include fluorescent and phosphor materials. A control mechanism is described to reduce the spatial variation in screen brightness.
    Type: Application
    Filed: September 19, 2007
    Publication date: March 20, 2008
    Inventor: Roger A. Hajjar
  • Publication number: 20080068294
    Abstract: Methods for controlling complementary dual displays for use with an electronic device are presented including: sending a video signal to a first display, wherein the first display is a refresh-based, high frame rate display; displaying the video signal on the first display; and printing a frame of the video signal to a second display, wherein the second display is a bistable, low frame rate display, the printing including, loading a portion of a current frame of the video signal into a frame buffer, and displaying the current frame of the video signal to a second display, such that a bistable static image is displayed on the second display.
    Type: Application
    Filed: February 5, 2007
    Publication date: March 20, 2008
    Applicant: Springs Design, Inc.
    Inventors: Albert Teng, Jack Yuan
  • Patent number: 7327329
    Abstract: In a liquid crystal display (LCD) panel based display, a method of dynamically selecting either frame rate conversion (FRC) or pixel voltage overdrive is disclosed. The method is carried out by performing the following operations. A video vertical refresh rate of an incoming video data stream is determined and based upon the determining, only one video data stream conditioning protocol from a number of available video data stream conditioning protocols is selected. The selected video data stream condition protocol is then applied to the video data stream.
    Type: Grant
    Filed: July 29, 2004
    Date of Patent: February 5, 2008
    Assignee: Genesis Microchip Inc.
    Inventors: Osamu Kobayashi, Anders Frisk
  • Publication number: 20080012791
    Abstract: An LCD monitor including M scan sections is provided for displaying one frame in one frame time. Each of the M scan section includes several scan lines. Each scan line corresponds to one pixel. A frame time includes M scan-section times corresponding to one of the M scan sections respectively. Each scan-section time includes one black-frame-inserting time and several scan-line times. All pixels corresponding to the (S+N)th scan section is turned black during the black-frame-inserting time of the Sth scan section time. The scan lines in the Sth scan section are enabled during the scan-line times of the Sth scan-section time. S is an integer which is smaller or equal to M.
    Type: Application
    Filed: July 11, 2007
    Publication date: January 17, 2008
    Applicant: CHI MEI OPTOELECTRONICS CORP.
    Inventor: Tzong-Yau KU
  • Patent number: 7304656
    Abstract: The present invention relates to a device for digital display of a video image using time-division modulation. This device is intended to display a video image during a video frame comprising a plurality of consecutive subfields distributed within at least two separate identical time segments. According to the invention, the pixels of the video image change state at most once during each time segment and the video image to be displayed is saved in the image memory in the form of information identifying, for each subfield, the pixels changing state.
    Type: Grant
    Filed: March 10, 2003
    Date of Patent: December 4, 2007
    Assignee: Thomson Licensing
    Inventors: Didier Doyen, Jonathan Kervec, Thierry Borel
  • Patent number: 7295173
    Abstract: An image display method including dividing an original image for one frame period into a plurality of subfield images, arranging the subfield images in a direction of a time axis in an order of brightness of the subfield images, and displaying the arranged subfield images in the order of the brightness.
    Type: Grant
    Filed: February 17, 2005
    Date of Patent: November 13, 2007
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Goh Itoh, Masahiro Baba, Kazuki Taira, Haruhiko Okumura
  • Patent number: 7248256
    Abstract: The apparatus has an evaluated value calculating means 102 for calculating the complexity of the object shape and the complexity of the modeling structure of the object CAD data input by the CAD data inputting means 101; a searching means 104 for searching the reference CAD data in the reference CAD data base 103 in accordance with the condition of said complexity; an evaluated value calculating means 106 for calculating the complexity of the object shape and the complexity of the modeling structure based on the searched reference CAD data; and a displaying means 105 for evaluated values obtained by the means 102 and the means 106 on the graphic representation defining its horizontal axis for the complexity of the object shape and its vertical axis for the complexity of the modeling structure. It will be appreciated that the man-hour for evaluating large amount of various models can be reduced by means of not using a CAD system.
    Type: Grant
    Filed: April 4, 2006
    Date of Patent: July 24, 2007
    Assignee: Hitachi, Ltd.
    Inventors: Shunsuke Minami, Koji Shiroyama, Tsutomu Sasaki
  • Patent number: 7212174
    Abstract: A system and method for facilitating application sharing in a networked environment is provided. Specifically, the system divides a display area on a host computer into a plurality of regions, with each region comprised of a predetermined number of current pixels. The system then evaluates current pixels within a selected region and compares them to corresponding pixels stored in memory. If the system determines that the value of the current pixel differs from the value of the stored corresponding pixel, all pixels within the region are sent to a receiving computer via a network. The receiving computer inserts the received region into a display such that it matches the display on the host computer from which the region originated.
    Type: Grant
    Filed: June 24, 2004
    Date of Patent: May 1, 2007
    Assignee: International Business Machines Corporation
    Inventors: James S. Johnston, Mark S. Kressin, William M. Quinn
  • Patent number: 7184001
    Abstract: A method of frame processing which includes the following steps: 1) an input frame is input into the frame processing device, 2) according to the input frame and the previous input frame, the frame processing device selects a multiple number of output frames, and 3) the output frames are output by the frame processing device at a refresh rate greater than the first refresh rate. When the voltage value of the input frame is greater than the previous frame's voltage value, the voltage value of the output frame is greater than that of the input frame. When the voltage value of the input frame is less than the previous one's, the voltage value of the output frame is less than that of the input frame.
    Type: Grant
    Filed: July 31, 2003
    Date of Patent: February 27, 2007
    Assignee: CHI MEI Optoelectronics Corp.
    Inventor: Li-Yi Chen
  • Patent number: 7176848
    Abstract: A method for displaying images on multiple monitors with different refresh rates is disclosed. To prevent screen tearing, the surface containing image data is not released when the access by the master monitor is completed until the slave monitor or monitors finish access. To synchronize images with a predefined playback speed, the surface containing a new image received from the application is not flipped onto the screens until receiving a predefined synchronization indicator.
    Type: Grant
    Filed: April 14, 2003
    Date of Patent: February 13, 2007
    Assignee: ATI Technologies, Inc.
    Inventors: Jianing Dai, Wai Ki Lo, Peter X. Cao, Anand Dua
  • Patent number: 7170469
    Abstract: A method and apparatus for converting a source frame signal received at a first frame rate to a destination frame signal output at a second frame rate. By adjusting the number of pixel data in the destination frame signal, the second frame rate is made to be the same as the first frame rate. Adjusting the amount of non-visible porch signals for at least one horizontal line of the destination frame signal prevents overflow and underflow conditions. The number of non-visible porch signals is increased to prevent underflow or decreased to prevent overflow. The number of non-visible porch signals in the last horizontal line is adjusted to comply with some display devices having a maximum time constraint from a last horizontal sync signal to a vertical sync signal in the destination frame signal.
    Type: Grant
    Filed: July 18, 2003
    Date of Patent: January 30, 2007
    Assignee: Realtek Semiconductor Corp.
    Inventors: Jin-Sheng Gong, Issac Chen
  • Patent number: 7161558
    Abstract: Electronically programmed signs consist of any array of picture elements (pixels) that can be controlled independently to create an image. Varying the intensity of each pixel and adding multiple colors per pixel will enhance the image quality. It is currently common to have displays that use one, two or three separate colors in a pixel (monochrome, red-green, and red, green and blue) with intensity levels of two, four, eight up to 256 and beyond. Multiple colored pixels can combine colors at various intensity levels to expand the displayable color palette.
    Type: Grant
    Filed: April 24, 2001
    Date of Patent: January 9, 2007
    Assignee: Daktronics, Inc.
    Inventors: Ryan Paul Eidem, Brent Allan Joffer, Reece Allen Kurtenbach, Thomas Raymond Mittan, Robert Edward Seeley
  • Patent number: 7136110
    Abstract: A resizing unit resizes a captured image or an inputted image and outputs a resized image. A first conversion unit converts the resized image into an RGB image or an image for a TV monitor. A second conversion unit converts the RGB image or the image for the TV monitor into a plurality of serial data.
    Type: Grant
    Filed: June 13, 2001
    Date of Patent: November 14, 2006
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yoshihiro Honma, Yuji Sakaegi
  • Patent number: 7119779
    Abstract: Some embodiments provide application, at a beginning of a first display frame, of a first potential to a pixel imaging element, the first potential to reset the pixel imaging element to a reset state, application, during the first display frame, of a second potential to the pixel imaging element, the second potential to set the pixel imaging element to a desired imaging state, and change, at a beginning of a second display frame subsequent to the first display frame, of the second potential to a third potential, the third potential to reset the pixel imaging element to the reset state.
    Type: Grant
    Filed: March 25, 2003
    Date of Patent: October 10, 2006
    Assignee: Intel Corporation
    Inventor: Samson X. Huang
  • Patent number: 7091967
    Abstract: A source frame signal received at a first frame rate is converted to a destination frame signal output at a second frame rate. By adjusting the clock frequency of the clock signal in the destination frame signal, the second frame rate is made to be the same as the first frame rate. Adjusting the destination clock frequency prevents overflow and underflow conditions. The destination clock frequency is decreased to prevent underflow or increased to prevent overflow. The destination clock frequency during the last horizontal line is adjusted to comply with some display devices having a maximum time constraint from a last horizontal sync signal to a vertical sync signal in the destination frame signal.
    Type: Grant
    Filed: September 1, 2003
    Date of Patent: August 15, 2006
    Assignee: Realtek Semiconductor Corp.
    Inventors: Jin-Sheng Gong, Issac Chen
  • Patent number: 7085804
    Abstract: In a method for processing objects of a standardized communication protocol for image and data exchange between devices via a communication network by means of processing devices, the objects are converted with a conversion routine into a pure text file (plain text), can be processed in a simple command language and are subsequently converted back into the objects.
    Type: Grant
    Filed: March 25, 2002
    Date of Patent: August 1, 2006
    Assignee: Siemens Aktiengesellschaft
    Inventor: Björn Nolte
  • Patent number: 7061512
    Abstract: A display system 100 includes a light source 110 and a color wheel 114. An optical section 112 is arranged to receive light from the light source 110 and to direct the light toward a color wheel 114. A digital micromirror device 122 is arranged to receive the light from the color wheel 114 and to direct image data toward a display. The image data includes an array of pixels arranged in rows and columns. The array of pixels is arranged as curved color bands during a first time period and rectangular color bands during a second time period. The second time period being concurrent with but of a shorter duration than the first time period.
    Type: Grant
    Filed: June 10, 2003
    Date of Patent: June 13, 2006
    Assignee: Texas Instruments Incorporated
    Inventors: Daniel J. Morgan, Donald B. Doherty, William J. Sexton
  • Patent number: 7038697
    Abstract: A system and method for generating color gradients is provided. The system generates color gradients using techniques from geometric surface modeling. The system and method of the present invention allow designers to specify very complex gradients in a simple way. The system can employ, for example, a vector-based interpolation method and/or a pixel-based partial differential equation (PDE) interpolation methods to facilitate generation of the color gradients. In one example, input boundary curves and/or feature curves are approximated by line segments, which are then utilized to generate a triangulation approximating a smooth color gradient.
    Type: Grant
    Filed: June 23, 2003
    Date of Patent: May 2, 2006
    Assignee: Microsoft Corporation
    Inventors: Michel J. Gangnet, Michael Kallay, Andrew Y. Wu, Eric J. Stollnitz, Devon L. Strawn, John Michael Lounsbery, Patrick Pérez
  • Patent number: 7006112
    Abstract: A method for scaling an image frame by an off-screen technology is provided. An image frame consisting of n rows and m columns of data is stored into a storage device. The image frame is divided into a plurality of image portions. Then, the plurality of image portions are picked in sequence to a frame buffer register. An image scaling operation is performed for each picked image portion, and then the scaled image portion is cleared from the frame buffer register.
    Type: Grant
    Filed: November 21, 2002
    Date of Patent: February 28, 2006
    Assignee: Via Technologies, Inc.
    Inventors: Pingo Chia, Titan Sun
  • Patent number: 7006115
    Abstract: A digital display unit which receives horizontal lines of unequal length in a V-active region and computes an average length of the lines. The average is used to generate horizontal line demarkers in the V-blank (vertical blank) region. The demarkers specify the transition from one line to the other. Such a feature is useful in spread spectrum clocking (SSC) based display signals in which HSYNC signals may also not be available to determine the transitions from one line to another in the V-blank region.
    Type: Grant
    Filed: June 24, 2002
    Date of Patent: February 28, 2006
    Assignee: Texas Instruments Incorporated
    Inventors: Jayawardan Janardhanan, Deepak Khanchandani, Ramanujam Thodur Madabusi
  • Patent number: 6970148
    Abstract: An image display method including dividing an original image for one frame period into a plurality of subfield images, arranging the subfield images in a direction of a time axis in an order of brightness of the subfield images, and displaying the arranged subfield images in the order of the brightness.
    Type: Grant
    Filed: July 9, 2002
    Date of Patent: November 29, 2005
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Goh Itoh, Masahiro Baba, Kazuki Taira, Haruhiko Okumura
  • Patent number: 6927746
    Abstract: An apparatus and method for automatically detecting a display mode to be used in a serial data interface (SDI) of a decoded video signal is provided. The apparatus for detecting a display mode includes a mode detector which detects a predetermined display mode by counting clock pulses generated between a present horizontal synchronous signal and a next horizontal synchronous signal from input decoded video signals, and a signal processing unit which converts formats of the decoded video signals so as to correspond to a display mode detected by the mode detector, serializes and outputs the decoded video signal. By deleting a control signal indicating a display mode, a control signal that does not coincide with processed data as a result of an incorrectly or incompatibly designed controller can be prevented.
    Type: Grant
    Filed: September 30, 2002
    Date of Patent: August 9, 2005
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yoon-nam Lee, Joo-sun Hong
  • Patent number: 6909406
    Abstract: A presentation module associated with the BIOS of an information handling system, such as a portable computer, allows an intermediate level driver, such as a dynamic link library, to set the presentation display type. In one embodiment, a graphical user interface on a portable computer LCD calls a presentation dynamic link library to coordinate selection and unselection of a projector for displaying information from the portable computer. Upon selection of the projector, the presentation module detects the resolution of the projector and a resolution application programming interface sets the projector resolution of the portable computer to the highest supported resolution.
    Type: Grant
    Filed: March 15, 2002
    Date of Patent: June 21, 2005
    Assignee: Dell Products L.P.
    Inventors: Teresa A. Wilburn, Rachel D. Starnes
  • Patent number: 6894684
    Abstract: Disclosed are a computer system and an image processing method, that can easily reduce the EMI (electromagnetic interference), introduced into a liquid crystal display using the spread spectrum. The computer system includes a graphic processing unit for converting the image signal provided from at least either of a central processing unit and a memory into a signal that can be displayed on a screen, and a spread spectrum unit, provided between the graphic processing unit and the liquid crystal display, for modulating a frequency of a clock signal from a clock generator within a predetermined frequency range.
    Type: Grant
    Filed: August 30, 2001
    Date of Patent: May 17, 2005
    Assignee: SamSung Electronics Co., Ltd.
    Inventors: Seung-Gi Shin, Hae-Jin Hwang
  • Patent number: 6876339
    Abstract: The object is to realize format conversion in inputting an image signal corresponding to conventional low resolution (hereafter referred to as a video signal) to an active matrix semiconductor display device or to a passive matrix semiconductor display device corresponding to recent high resolution, and at the same time to provide a novel method of driving capable of improving the resolution in an outline portion of an image. With the driving method of the present invention, conversion of a screen size which is not capable of being completely performed by only lowering a clock frequency, can be completely performed by artificially reducing the number of scans of gate signal lines in accordance with outputting a gate selection pulse at a timing for simultaneously selecting a plurality of gate signal lines using a modulated clock signal in which a clock signal has been modulated at a constant period.
    Type: Grant
    Filed: December 21, 2000
    Date of Patent: April 5, 2005
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Masaaki Hiroki
  • Patent number: 6816131
    Abstract: A single horizontal scan range CRT monitor that includes a receiver for receiving display signals in a digital format from an external source, the initial display signals having one of a plurality of input resolutions, and a converter connected to the receiver and supplied with the initial display signals for detecting the input resolution of the initial display signals and converting the initial display signals to digital output signals having an output resolution selected from a plurality of different output resolutions matched to the detected input resolution of the initial display signals, and wherein all of the plurality of output resolutions have a same horizontal resolution and all of the digital output signals have a same horizontal frequency.
    Type: Grant
    Filed: June 13, 2001
    Date of Patent: November 9, 2004
    Assignees: Sony Corporation, Sony Electronics Inc.
    Inventors: Yoshihisa Narui, Pablo A. Espinosa
  • Patent number: 6809716
    Abstract: An apparatus for protecting a screen of the plate type image display apparatus is disclosed, in which an A/D converter converts analog R, G, B image signals into digital R, G, B image signals according a sampling clock. Also, a scaler converts the digital R, G, B image signals into a frame unit, able to be displayed on an LCD module, such as a flat panel display, and transmits the signals corresponding to a signal input timing of the LCD module. A frequency detecting part detects an output frequency of the scaler, and a microcomputer determines whether the frequency detected by the frequency detecting part is within a prescribed frequency range. In this way, a power supply for the LCD module is controlled. Thus, the power supply for the LCD module is shut off when an erroneous frequency is detected and a normal screen is displayed when a normal frequency is received so that the LCD module is better protected. The LCD module is thus protected, which could enhance reliability.
    Type: Grant
    Filed: August 15, 2000
    Date of Patent: October 26, 2004
    Assignee: LG Electronics Inc.
    Inventor: Myung Wook Kim
  • Publication number: 20040165112
    Abstract: Disclosed is a method for controlling input from a computer keyboard, in non-monitor mode, in a multifunctional image display apparatus having the function of a TV and computer monitor. The disclosed control method includes the steps of sensing commands input via the key input unit, determining output mode of the monitor, displaying the current mode indicator on the monitor according to the output mode of the monitor by communicating with the monitor after recognizing commands from the key input unit, and executing input commands if the output mode of the monitor is a PC mode and canceling input commands if the output mode of the monitor is not a PC mode.
    Type: Application
    Filed: October 9, 2003
    Publication date: August 26, 2004
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Jung-Soo Suh
  • Publication number: 20040160384
    Abstract: Described is a device and method where pixel data in the display memory are stored such that data for a first display area and the corresponding location in a second display are stored within the same word. For example, the first pixel data in the upper half of the display would be stored in the one half of the word, while the first pixel data in the lower half of the display would be stored in the other half of the word. With the pixel data interleaved as described above, in one memory fetch the data can easily be split into upper and lower portions. Once split, the upper and lower data can be applied in parallel paths to frame rate modulation and dithering circuits and streamed to data formatting circuitry and on to the respective upper and lower display areas.
    Type: Application
    Filed: February 18, 2003
    Publication date: August 19, 2004
    Inventors: Eric Jeffrey, Barinder Singh Rai
  • Patent number: 6774912
    Abstract: Multiple independent displays from one graphics controller can be driven in a wide variety of modes using multiple display controllers. This invention incorporates a unique combination of enhancement building on a generic single multi-display graphics subsystem. Digital video is gaining vast popularity in the worldwide consumer, professional and commercial market. The applications of this invention cover all these market segments and include (but are not limited to) Digital Content Creation, Digital video playback, digital entertainment, DVD Authoring etc.
    Type: Grant
    Filed: March 16, 2000
    Date of Patent: August 10, 2004
    Assignee: Matrox Graphics Inc.
    Inventors: Kamran Ahmed, Alexandre Lahaise, Gilles Forest, Yves Tremblay, Lorne Trottier
  • Patent number: 6759996
    Abstract: An image signal generating unit supplies a single image signal to multiple image display units having different unit numbers. Embedded in the image signal is an index signal designating the image display units on which the image signal is to be displayed. Each image display unit compares its unit number with the index signal to select displayable frames of the image signal, preferably storing and displaying the most recent selected frame. Each image display unit can thereby display a different image. The image signal may have a standard format.
    Type: Grant
    Filed: December 21, 1999
    Date of Patent: July 6, 2004
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Jun Someya, Yoshiaki Okuno, Takao Nakano
  • Patent number: 6759997
    Abstract: An image signal generating unit supplies a single image signal to multiple image display units having different unit numbers. Embedded in the image signal is an index signal designating the image display units on which the image signal is to be displayed. Each image display unit compares its unit number with the index signal to select displayable frames of the image signal, preferably storing and displaying the most recent selected frame. Each image display unit can thereby display a different image. The image signal may have a standard format.
    Type: Grant
    Filed: January 10, 2003
    Date of Patent: July 6, 2004
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Jun Someya, Yoshiaki Okuno, Takao Nakan
  • Patent number: 6731251
    Abstract: A device for supporting two interfaces including a TV image card and a LCD panel image card is disclosed. The device can be inserted by the TV or the LCD panel image card according to the user's different needs. The device utilizes the built-in graphic capability of the North Bridge for supporting the TV or the LCD panel image output. By using the device of the invention, it is not necessary to design different motherboards for meeting clients' different demands. Furthermore, no image card is required according to the invention, and thus corresponding costs decrease.
    Type: Grant
    Filed: August 17, 2001
    Date of Patent: May 4, 2004
    Assignee: Via Technologies, Inc.
    Inventor: Yun-Ching Chen
  • Patent number: 6724351
    Abstract: A display apparatus and computer system employing the same include a dual mode television/monitor display which is operable to provide television display output in an interlaced mode of operation and computer output in a noninterlaced computer graphics mode of operation in a visually detectable manner and further includes a communication channel for transmitting commands from the host computer system to the display apparatus. The display apparatus contains a microprocessor for receiving commands from the host computer system for switching the display between the interlaced and noninterlaced modes of operation. In a further aspect, a method of transitioning the dual mode display between the television and computer graphics modes of operation via a host computer system is provided.
    Type: Grant
    Filed: September 18, 2001
    Date of Patent: April 20, 2004
    Assignee: Gateway, Inc.
    Inventor: Robert A. Boger
  • Publication number: 20040041745
    Abstract: A method of frame processing which includes the following steps: 1) an input frame is input into the frame processing device, 2) according to the input frame and the previous input frame, the frame processing device selects a multiple number of output frames, and 3) the output frames are output by the frame processing device at a refresh rate greater than the first refresh rate. When the voltage value of the input frame is greater than the previous frame's voltage value, the voltage value of the output frame is greater than that of the input frame. When the voltage value of the input frame is less than the previous one's, the voltage value of the output frame is less than that of the input frame.
    Type: Application
    Filed: July 31, 2003
    Publication date: March 4, 2004
    Inventor: Li-Yi Chen
  • Patent number: 6686894
    Abstract: An image display apparatus and method having a synchronizing signal decimation circuit for performing decimation of vertical synchronizing signals, an image decimation circuit for performing decimation of image data, an image scale-up circuit for scaling up the decimated image data, a display panel for displaying an image, a driving circuit for causing the display panel to sequentially display individual frames of image according to the scaled-up image data in synchronization with the decimated vertical synchronizing signals, and a controller having information of a scaling factor of the image scale-up circuit, vertical synchronizing signals to be discarded by the synchronizing signal decimation circuit, and image data to be discarded by the image decimation circuit. The controller controls operation of the synchronizing signal decimation circuit, the image decimation circuit, the image scale-up circuit, and the driving circuit according to the information.
    Type: Grant
    Filed: June 3, 2002
    Date of Patent: February 3, 2004
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Yoshiaki Okuno, Jun Someya
  • Patent number: 6559839
    Abstract: A matrix display panel has scan lines that are selected in consecutive order. An interlaced image signal is displayed by the use of one or more output enable signals that enable only every second selected scan line to be driven. A progressively scanned image signal having a frame rate too high to be handled by the matrix display panel is displayed as an interlaced image, by use of the same output enable signals. Consequently, no frame memory is needed for scanning conversion or frame-rate conversion.
    Type: Grant
    Filed: March 22, 2000
    Date of Patent: May 6, 2003
    Assignees: Mitsubishi Denki Kabushiki Kaisha, Advanced Display Inc.
    Inventors: Hiroshi Ueno, Jun Someya, Masaru Nishimura
  • Patent number: 6545688
    Abstract: A display unit designed to be scanned within a narrow horizontal scanning range irrespective of the frequency at which the horizontal lines of an image are received. If the horizontal line frequency of the received display signal does not fall within the narrow horizontal scanning range, the image frames in the display signal are scaled at least vertically such that the number of horizontal lines in each scaled image frame times the frame rate falls within the horizontal scanning range. As a result, the images can be scanned within the horizontal range for which a display unit is designed for. The scaling can be performed without using a frame buffer as the frame rate (at which the images are encoded in a display signal) equals the scanning rate.
    Type: Grant
    Filed: June 12, 2000
    Date of Patent: April 8, 2003
    Assignee: Genesis Microchip (Delaware) Inc.
    Inventors: Graham David Loveridge, Nils Anders Frisk
  • Patent number: 6496160
    Abstract: An apparatus for converting analog stroke display signals representing electron beam generated stroke traces into raster display information for producing a raster-scan image display. The apparatus includes a sampling circuit for sampling the analog stroke display signals to produce pixel data representing sub-pixel locations covered by the stroke traces. A frame buffer is coupled to the sampling circuit to temporarily store pixel data. A filter is coupled to the frame buffer for calculating brightness of pixels based upon the amount of coverage of the pixels by a stroke trace. In addition, a raster-scan display device is coupled to the filter for receiving the pixel data from the filter to produce a raster-scan image.
    Type: Grant
    Filed: April 29, 1999
    Date of Patent: December 17, 2002
    Assignee: Evans & Sutherland Computer Corporation
    Inventors: Allen H. Tanner, Calvin L. Simmons
  • Publication number: 20020122013
    Abstract: The present invention provides a controller of a panel driver that makes a determination as to the display color by which information to be displayed is displayed, reports a driving method corresponding to this display color to a driving method control circuit, and reports a driving voltage corresponding to this display color to a driving voltage control circuit. As a result of such a process, a driving method and a driving voltage suitable for the display color are selected. Additionally, it becomes possible for a single panel driver to drive an LCD and an organic electro luminescence panel at the same time without providing a dedicated driver for each of these two panels.
    Type: Application
    Filed: March 5, 2002
    Publication date: September 5, 2002
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Kunio Koike
  • Patent number: 6407723
    Abstract: An image display apparatus has a synchronizing signal decimation circuit for performing decimation of vertical synchronizing signals, an image decimation circuit for performing decimation of image data, an image scale-up circuit for scaling up the decimated image data, a display panel for displaying an image, a driving circuit for causing the display panel to sequentially display individual frames of image according to the scaled-up image data in synchronization with the decimated vertical synchronizing signals, and a controller having information of a scaling factor of the image scale-up circuit, vertical synchronizing signals to be discarded by the synchronizing signal decimation circuit, and image data to be discarded by the image decimation circuit. The controller controls operation of the synchronizing signal decimation circuit, the image decimation circuit, the image scale-up circuit, and the driving circuit according to the information.
    Type: Grant
    Filed: March 9, 2000
    Date of Patent: June 18, 2002
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Yoshiaki Okuno, Jun Someya
  • Patent number: 6373477
    Abstract: In a method of driving a display (D), field information from a field of an image signal is distributed (DD) over a plurality of sub-fields, and a start time for each sub-field is generated (AU, SOC) in dependence upon motion.
    Type: Grant
    Filed: March 22, 1999
    Date of Patent: April 16, 2002
    Assignee: U.S. Philips Corporation
    Inventor: Roy Van Dijk