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Himax Technologies, Inc. Message Board

  • himx2013 himx2013 Jan 4, 2014 7:34 PM Flag

    Just found 2 more patents. US 8610758 B2 & US 8581887 B2

    Himax Technologies, Inc. (ADR) : Patent Issued for Depth Map Generation for a Video Conversion System
    12/24/2013 | 01:16pm US/EasternRecommend:
    0
    By a News Reporter-Staff News Editor at Journal of Technology -- A patent by the inventors Cheng, Chao-Chung (Taipei, TW); Li, Chung-Te (Taipei, TW); Chen, Liang-Gee (Taipei, TW); Huang, Ling-Hsiu (Sinshih Township, Tainan County, TW), filed on September 3, 2010, was published online on December 17, 2013, according to news reporting originating from Alexandria, Virginia, by VerticalNews correspondents.

    Patent number 8610758 is assigned to Himax Technologies Limited (Tainan, TW).

    The following quote was obtained by the news editors from the background information supplied by the inventors: "Embodiments of the present invention relate generally to display technologies and more specifically to depth map generation methods and video conversion methods and systems.

    "Unless otherwise indicated herein, the approaches described in this section are not prior art to the claims in this application and are not admitted to be prior art by inclusion in this section.

    "A three-dimensional (3D) image or 3D video may provide the illusion of depth perception. Conventional 3D technologies may be based on stereoscopic photography, which may require a special camera to capture images from two lenses. To play-back the 3D stereoscopic image or video, special hardware and/or eye glasses may be required to provide the illusion of depth for the viewers by simultaneously displaying two images that mimic the perspectives of human eyes. Although 3D displays offer spectacular visual experience and benefit to many applications, such as broadcasting, movie, gaming, and photography, there currently lacks an effective approach to generate 3D content.

    "In addition, for two-dimensional (2D) images or 2D video that have been captured using conventional 2D hardware, the conventional 3D display hardware and/or 3D eye glasses may lack the ability to display 3D effects from these 2D content. Thus, before showing 3D effects using 3D display hardware, the 2D images may need to be converted into 3D images, and the 2D video may also need to be converted into 3D video. However, conventional techniques for converting 2D images/video to 3D images/video often rely on object-based segmentation and motion compensation techniques, which require significant computing resources to carry out."

    In addition to the background information obtained for this patent, VerticalNews journalists also obtained the inventors' summary information for this patent: "In accordance with one or more embodiments of the present disclosure, a process for generating a depth map for converting a two-dimensional (2D) image to a three-dimensional (3D) image may be presented. The process may be implemented to generate a depth gradient map from the 2D image, wherein the depth gradient map is configured to associate one or more edge counts with one or more depth values. The process may extract an image component from the 2D image, wherein the image component is associated with a color component in a color space. The process may determine a set of gains to adjust the depth gradient map based on the image component. And the process may further generate the depth map by performing depth fusion based on the depth gradient map and the set of gains.

    "In accordance with other embodiments of the present disclosure, a process for converting a two-dimensional (2D) video to a three-dimensional (3D) video may be present. The process may be implemented to select a first 2D image from the 2D video and generate a first depth gradient map associated with the first 2D image. The process may select a second 2D image from the 2D video, wherein the second 2D image is subsequent to the first 2D image. The process may generate a first depth map by performing depth fusion using the first depth gradient map and the second 2D image. And the process may convert the second 2D image to a first 3D image for the 3D video using the first depth map.

    "In accordance with further embodiments of the present disclosure, a system may be configured to generate a depth map for video conversion. The system may contain a depth gradient map generator for generating a depth gradient map based on a 2D image. The system may contain a depth refinement engine for extracting one or more image components from the 2D image and determining one or more sets of gains respectively based on the one or more image components. And the system may further contain a depth fusion engine, coupled with the depth gradient map generator and the depth refinement engine, for generating the depth map by performing depth fusion based on the depth gradient map and the one or more sets of gains.

    "The foregoing summary is illustrative only and is not intended to be in any way limiting. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features will become apparent by reference to the drawings and the following detailed description."

    Sentiment: Strong Buy

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    • Himax Technologies, Inc. (ADR) : Patent Issued for Color-Sequential Display Method
      11/21/2013 | 01:17am US/EasternRecommend:
      0
      By a News Reporter-Staff News Editor at Journal of Technology -- A patent by the inventors Wu, Biing-Seng (Tainan County, TW); Bu, Lin-Kai (Tainan County, TW); Chen, Chien-Pin (Tainan County, TW), filed on August 14, 2009, was published online on November 12, 2013, according to news reporting originating from Alexandria, Virginia, by VerticalNews correspondents.

      Patent number 8581887 is assigned to Himax Technologies Limited (Tainan County, TW).

      The following quote was obtained by the news editors from the background information supplied by the inventors: "The invention relates in general to a display method, and more particularly to a color-sequential display method.

      "With the rapid advance in display technology in recent years, the liquid crystal display (LCD), having the features of slimness, light weight, and low radiation, has gradually become the mainstream display product.

      "The liquid crystal panel, which includes a number of pixels arranged in a matrix, controls the luminance of the pixel for entire LCD panel to display frames through the input of image data of respective pixels. Since the pixel can only display the grey level from brightness to darkness, other means are needed for the display of colors.

      "A conventional LCD displays the color through a color filter which displays the three primary color components of a pixel at the same time. Each pixel of the above color filter LCD includes three displaying units respectively corresponding to a red, a green and a blue filters. The red light, green light and blue light displayed via the filter are combined and the colors of the pixel are perceived by the viewer.

      "Another conventional color-sequential LCD displays color by sequentially displaying the components of the three primary color of a pixel. Each pixel of the above color-sequential LCD includes a displaying unit, which respectively emits red light, green light and blue light respectively from three luminous sources as the backlight source. During a frame time, the pixel sequentially displays three data and red light, green light and blue light sources are correspondingly turned on. Through the persistence of vision, a viewer is able to recognize the color of a pixel.

      "Compared with the color filter LCD, the color-sequential LCD displays color is without using a color filter, therefore is advantageous in cost saving. Besides, the color-sequential display method, which only requires one pixel to determine the color of a pixel, increases the resolution by three times when used to display the color of an LCD.

      "However, the color-sequential needs to input image data to a pixel in three times in order to completely input the image data to the pixel, thereby requiring pulses with higher frequency and consequently consuming more power.

      "On the other hand, an ordinary electronic device would reduce the frame rate of the display to achieve energy saving when at a low power mode. For example, when the frame rate is reduced to 20 Hz from 60 Hz, i.e., from displaying 60 frame data per second to displaying 20 frame data per second. However, due to the decrease in frame rate, the image data displayed according to the conventional color-sequential display method would not be perceived by the viewer as color through the persistence of vision. What the viewer would perceive is the flickering of red, green or blue colors.

      "It can be seen from the above description that using the color-sequential method to display the LCD color has the advantage of an increased resolution but has its shortcomings at the same time. Therefore, how to reduce the power required for the transmission of image data and enable the color-sequential display method to support a low power mode has become an important issue to be resolved."

      In addition to the background information obtained for this patent, VerticalNews journalists also obtained the inventors' summary information for this patent: "According to the object of the invention a color-sequential display method with the advantage of reducing power consumption of image display and having low power mode support is provided.

      "It is therefore an object of the invention to provide a display method for driving the color-sequential display of the electronic device. When the electronic device is not at low power mode, a first image is displayed first, wherein the first image sequentially uses a second color data and a first color data of the first image to drive the display. Next, a second image is displayed; wherein the second image sequentially uses a second color data and a third color data of the second image to drive the display. When the electronic device is at low power mode, the respective luminance of the first and the second images are obtained. Lastly, the respective luminance of the first image and the second image are sequentially used to drive the display.

      "Other objects, features, and advantages of the invention will become apparent from the following detailed description of the preferred but non-limiting embodiments. The following description is made with reference to the accompanying drawings."

      Sentiment: Strong Buy

      • 3 Replies to himx2013
      • hey sbac, did you notice the name of the first inventor of this patent ? he is not only the chairman of the company ;)

      • Sbac,

        Here's a bunch of patents where Himax is assignee thereof:

        Integrator ramp generator with DAC and switched capacitors
        Patent number: 8614639
        Abstract: A ramp generator includes a digital-to-analog converter (DAC), a sampling capacitor, an integrator circuit, a polarity reversing switch selectively coupling first and second outputs of the DAC to a first side of the sampling capacitor, a first switch coupling a second side of the sampling capacitor to a reference voltage source, and a second switch coupling the second side of the sampling capacitor to an input of the integrator circuit.
        Type: Grant
        Filed: August 24, 2012
        Issued: December 24, 2013
        Assignee: Himax Imaging, Inc.
        Inventors: Ping Hung Yin, Satya Narayan Mishra, Amit Mittra
        Black level calibration method and system
        Patent number: 8564697
        Abstract: Black level calibration methods and systems are generally disclosed. According to one embodiment of the present invention, a method of calibrating a black level signal in a frame includes performing an iteration of averaging a first set of digital values corresponding to a first set of adjusted black level signals associated with a first set of black pixels of the frame, determining whether an average value based on the first set of digital values has reached a target black level, determining a calibration offset based on a difference between the average value and the target black level and an accumulator step, converting the calibration offset to an analog signal, generating a calibration signal based on the analog signal for a second set of black pixels of the frame, and repeating the iteration for the frame until a predetermined condition is determined to have been met.
        Type: Grant
        Filed: October 21, 2009
        Issued: October 22, 2013
        Assignee: Himax Imaging, Inc.
        Inventors: Nguyen Dong, Amit Mittra, Chi-Shao Lin
        Light pipe etch control for CMOS fabrication
        Patent number: 8519400
        Abstract: In accordance with at least some embodiments of the present disclosure, a process for fabricating a light pipe (LP) is described. The process may be configured to construct a semiconductor structure having an etch-stop layer above a photodiode region and a first dielectric layer above the etch-stop layer. The process may be configured to etch a LP funnel through the first dielectric layer. And the process may be further configured to stop the etching of the LP funnel upon reaching and removing of the etch-stop layer.
        Type: Grant
        Filed: October 29, 2012
        Issued: August 27, 2013
        Assignee: Himax Imaging, Inc.
        Inventor: Kihong Kim
        Method for forming an image sensing device
        Patent number: 8507311
        Abstract: A method for forming an image sensing device is disclosed. An epitaxy layer having the first conductivity type is formed on a substrate, wherein the epitaxy layer comprises a first pixel area corresponding to a first incident light, a second pixel area corresponding to a second incident light, and a third pixel area corresponding to a third incident light. A first deep well is formed in a lower portion of the epitaxy layer for reducing pixel-to-pixel talk of the image sensing device. A second deep well is formed in a lower portion of the epitaxy layer.
        Type: Grant
        Filed: January 3, 2013
        Issued: August 13, 2013
        Assignee: Himax Imaging, Inc.
        Inventors: Chang-Wei Chang, Fang-Ming Huang, Chi-Shao Lin, Yu-Ping Hu
        Back-side illumination image sensor and method for fabricating back-side illumination image sensor
        Patent number: 8486815
        Abstract: A method for fabricating a back-side illumination image sensor includes: implanting a first type of dopant into an epitaxial layer disposed over a first side of a substrate layer to form a first dopant layer in a first side of the epitaxial layer; adhering a carry layer over the first dopant layer for carrying the substrate layer; grinding a second side of the substrate layer for exposing a second side of the epitaxial layer; implanting the first type of dopant into the epitaxial layer from the second side of the epitaxial layer to form a second dopant layer in the second side of the epitaxial layer; forming at least one metal layer over the second dopant layer after forming the second dopant layer in the second side of the epitaxial layer; removing the carry layer; and forming a color filtering module over the first dopant layer.
        Type: Grant
        Filed: May 5, 2011
        Issued: July 16, 2013
        Assignees: Himax Imaging, Inc., Himax Semiconductor, Inc.
        Inventors: Fang-Ming Huang, Tsung-Chieh Chang
        Sensing pixel arrays and sensing devices using the same
        Patent number: 8456556
        Abstract: A sensing pixel array is provided and includes a plurality of pixels disposed in an array. Each pixel operates during an exposure period and a readout period and generates a readout signal. Each pixel includes a sensing unit and a sampling unit. The sensing unit senses light to generate a sensing signal during the exposure period. The sampling unit samples the sensing signal to generate a sensing output signal which serves as the readout signal during the readout period. During the exposure period, the sampling unit acts as a memory unit for storing an input signal and outputting an accessed output signal which serves as the readout signal.
        Type: Grant
        Filed: January 20, 2011
        Issued: June 4, 2013
        Assignee: Himax Imaging, Inc.
        Inventors: Ping-Hung Yin, Shuenn-Ren Hsiao
        METHOD FOR FORMING AN IMAGE SENSING DEVICE
        Application number: 20130122636
        Abstract: A method for forming an image sensing device is disclosed. An epitaxy layer having the first conductivity type is formed on a substrate, wherein the epitaxy layer comprises a first pixel area corresponding to a first incident light, a second pixel area corresponding to a second incident light, and a third pixel area corresponding to a third incident light. A first deep well is formed in a lower portion of the epitaxy layer for reducing pixel-to-pixel talk of the image sensing device. A second deep well is formed in a lower portion of the epitaxy layer.
        Type: Application
        Filed: January 3, 2013
        Issued: May 16, 2013
        Assignee: HIMAX IMAGING, INC.
        Inventor: Himax Imaging, Inc.
        Back-side illumination image sensor
        Patent number: 8431975
        Abstract: A back side illumination (BSI) image sensor includes at least one pixel. The pixel area includes a photo diode and a transfer transistor. The transfer transistor has a control electrode made of a gate poly and a gate oxide for receiving a control instruction, a first electrode coupled to the photo diode, and a second electrode, wherein an induced conduction channel of the transfer transistor partially surrounds a recessed space which is filled with the gate poly and the gate oxide of the transfer transistor.
        Type: Grant
        Filed: January 31, 2011
        Issued: April 30, 2013
        Assignee: Himax Imaging, Inc.
        Inventors: Chih-Wei Hsiung, Fang-Ming Huang, Chung-Wei Chang
        Sensing Devices and Manufacturing Methods Therefor
        Patent number: 8389922
        Abstract: A sensing device is provided. The sensing device includes a sensing pixel array and a memory unit. The sensing pixel array is formed in a substrate and includes a plurality of pixels for sensing light. The substrate has a first side and a second side opposite to the first side and receives the light through the first side for sensing the light. The memory unit is formed on the second side of the substrate for memorization.
        Type: Grant
        Filed: August 4, 2010
        Issued: March 5, 2013
        Assignee: Himax Imaging, Inc.
        Inventors: Ping-Hung Yin, Shuenn-Ren Hsiao
        LIGHT PIPE ETCH CONTROL FOR CMOS FABRICATION
        Application number: 20130049153
        Abstract: In accordance with at least some embodiments of the present disclosure, a process for fabricating a light pipe (LP) is described. The process may be configured to construct a semiconductor structure having an etch-stop layer above a photodiode region and a first dielectric layer above the etch-stop layer. The process may be configured to etch a LP funnel through the first dielectric layer. And the process may be further configured to stop the etching of the LP funnel upon reaching and removing of the etch-stop layer.
        Type: Application
        Filed: October 29, 2012
        Issued: February 28, 2013
        Assignee: HIMAX IMAGING, INC.
        Inventor: Himax Imaging, Inc.
        Image sensing device and fabrication thereof
        Patent number: 8368160
        Abstract: An image sensing device is disclosed, including an epitaxy layer having the a conductivity type, including a first pixel area corresponding to a first incident light, a second pixel area corresponding to a second incident light, and a third pixel area corresponding to a third incident light, wherein the wavelength of the first incident light is longer than that of the second incident light and the wavelength of the second incident light is longer than that of the third incident light. A photodiode is disposed in an upper portion of the epitaxy layer, and a first deep well for reducing pixel-to-pixel talk of the image sensing device is disposed in a lower portion of the epitaxy layer in the second pixel area and the third pixel area, wherein at least a portion of the epitaxy layer in first pixel area does not include the first deep well.
        Type: Grant
        Filed: October 5, 2010
        Issued: February 5, 2013
        Assignee: Himax Imaging, Inc.
        Inventors: Chung-Wei Chang, Fang-Ming Huang, Chi-Shao Lin, Yu-Ping Hu
        Image sensor and related fabricating method thereof
        Patent number: 8367455
        Abstract: A fabricating method of an image sensor includes the steps of: providing a substrate; forming sensing elements on the substrate; forming microlenses on the sensing elements; filling a stuffed material on the microlenses, and air regions are formed in the stuffed material; and forming optical filters on the stuffed material.
        Type: Grant
        Filed: May 30, 2010
        Issued: February 5, 2013
        Assignee: Himax Imaging, Inc.
        Inventors: Yu-Ping Hu, Chih-Wei Hsiung, Fang-Ming Huang, Chia-Chi Huang, Chung-Wei Chang
        Method for processing color component values of pixel
        Patent number: 8345972
        Abstract: A method for processing a pixel having a plurality of color component values includes: utilizing a processing circuit to generate elements of a skin color correction matrix according to elements of a global color correction matrix and a predetermined value corresponding to the pixel; utilizing the processing circuit to generate elements of a current color correction matrix according to elements of the global color correction matrix, the skin color correction matrix and the color component values of the pixel; and adjusting the color component values of the pixel according to the elements of the current color correction matrix.
        Type: Grant
        Filed: September 17, 2010
        Issued: January 1, 2013
        Assignee: Himax Imaging, Inc.
        Inventor: Wang-Cheng Yi
        COLOR INTERPOLATION SYSTEM AND METHOD THEREOF
        Application number: 20120307115
        Abstract: A color interpolation system is disclosed. An enhancement unit receives raw signals from an image sensor, and then processes the raw signals to output an enhanced first signal. A first interpolation unit receives and processes a raw first signal and accordingly outputs an interpolated first signal. A gain generator generates an enhancement gain according to the enhanced first signal and the interpolated first signal.
        Type: Application
        Filed: May 31, 2011
        Issued: December 6, 2012
        Assignee: HIMAX IMAGING, INC.
        Inventors: PO-CHANG CHEN, YUAN-CHIH PENG, YU-YU SUNG
        Light pipe etch control for CMOS fabrication
        Patent number: 8324010
        Abstract: In accordance with at least some embodiments of the present disclosure, a process for fabricating a light pipe (LP) is described. The process may be configured to construct a semiconductor structure having an etch-stop layer above a photodiode region and a first dielectric layer above the etch-stop layer. The process may be configured to etch a LP funnel through the first dielectric layer. And the process may be further configured to stop the etching of the LP funnel upon reaching and removing of the etch-stop layer.
        Type: Grant
        Filed: June 29, 2010
        Issued: December 4, 2012
        Assignee: Himax Imaging, Inc.
        Inventor: Kihong Kim
        Method of fabricating image sensor and image sensor thereof
        Patent number: 8319306
        Abstract: A method of fabricating an image sensor and an image sensor thereof are provided. The method comprises: providing a mask; utilizing the mask at a first position to form a first group of micro-lenses having a first height on a first group of color filters of a color filter array on a pixel array; shifting the mask from the first position to a second position, wherein a distance between the first position and the second position is substantially equal to a width of a pixel of the pixel array; and utilizing the mask at the second position to form a second group of micro-lenses having a second height, different from the first height, on a second group of color filters of the color filter array.
        Type: Grant
        Filed: February 1, 2010
        Issued: November 27, 2012
        Assignees: Himax Technologies Limited, Himax Imaging, Inc.
        Inventors: Han-Kang Liu, Fang-Ming Huang, Shao-Min Hung, Bo-Nan Chen
        Image Sensor and Control Method for Image Sensor
        Application number: 20120293697
        Abstract: An image sensor including a plurality of first sensing pixels, a plurality of second sensing pixels, and a readout circuit is disclosed. The first sensing pixels are disposed within a sensitive region. The second sensing pixels are disposed within a non-sensitive region. The readout circuit repeatedly reads the output signals of the second sensing pixels to obtain an offset. The readout circuit processes the output signals of the first sensing pixels according to the offset.
        Type: Application
        Filed: May 16, 2011
        Issued: November 22, 2012
        Assignee: HIMAX IMAGING, INC.
        Inventors: Ping-Hung Yin, Ching-Fong Chen
        Pipelined recycling ADC with shared operational amplifier function
        Patent number: 8299950
        Abstract: A pipelined recycling analog-to-digital converter (ADC), which converts a first analog input signal into a first digital output signal, including a first conversion stage and a second conversion stage is disclosed. The first conversion stage includes a first processing unit and a second processing unit. The first and the second processing units execute a number of conversion operations. For each conversion operation, an analog value and a digital code are generated by the first or the second processing unit. The first and the second processing units share an operational amplifier, and for each conversion operation. The second conversion stage includes a comparing unit which determines a specific analog value among the analog values generated by the first and the second processing units. When the specific analog value is not located within a predetermined range, the comparing unit generates a reset pulse to reset the operational amplifier.
        Type: Grant
        Filed: January 18, 2011
        Issued: October 30, 2012
        Assignee: Himax Imaging, Inc.
        Inventors: Ping-Hung Yin, Shih-Feng Chen
        System and method of generating color correction matrix for an image sensor
        Patent number: 8300933
        Abstract: A system and method of generating a color correction matrix (CCM) for an image sensor are disclosed. Quantum efficiency (QE) spectra of pixels of the image sensor illuminated by a physical light source are measured. Subsequently, color values of the image sensor and color values in a predetermined color space are determined according to the QE spectra and predetermined reference data essential for deriving the color values. Finally, the CCM for the image sensor is generated by applying a fitting algorithm on the color values of the image sensor and the color values in the predetermined color space.
        Type: Grant
        Filed: July 27, 2009
        Issued: October 30, 2012
        Assignee: Himax Imaging, Inc.
        Inventor: Yang Wu
        Image sensor and fabricating method thereof
        Patent number: 8278132
        Abstract: The present invention provides an image sensor and a fabricating method thereof capable of approaching higher quantum efficiency and reducing cost. The method comprises: providing a substrate; forming a pixel region on a top surface of the substrate; forming an interlayer insulating layer and at least a metal line on the pixel region; forming an isolation carrier layer having a hole array therein on the interlayer insulating layer; grinding a lower surface of the substrate to reduce the thickness of the substrate; placing a plurality of conductors into the hole array to form a plurality of bumps on the isolation carrier layer.
        Type: Grant
        Filed: May 18, 2010
        Issued: October 2, 2012
        Assignee: Himax Imaging, Inc.
        Inventors: Chih-Min Liu, Fang-Ming Huang, Ping-Hung Yin, Kuo-Chan Huang, Chung-Wei Chang

      • very interesting.. 2D to 3D and Low power lcos

        Sentiment: Strong Buy

 
HIMX
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