Patents by Inventor Kuang-Lang Chen

Kuang-Lang Chen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20150123900
    Abstract: The present disclosure provides a method and a device for moving a cursor of a television. The method includes: obtaining a two-dimensional code value of a two-dimensional code reading device on a two-dimensional code graph paper in real time; calculating absolute coordinates of the cursor according to the two-dimensional code value and a position of the current cursor; and re-displaying the cursor according to the absolute coordinates. The present disclosure realizes the movement of the cursor through two-dimensional code technology, which reduces the difficulty of the operation and is suitable for use to satisfy people's requirements.
    Type: Application
    Filed: October 9, 2012
    Publication date: May 7, 2015
    Inventors: Cheng Chen, Kuang-Lang Chen, Yaoyuan Fu, Jiawen Hu, Hong Zeng
  • Publication number: 20120146977
    Abstract: A working voltage switching system for a liquid crystal panel and a switching method thereof are presented. A timing controller of the panel acquires a liquid crystal enable signal to generate a clock signal, and a clock generator acquires the clock signal to control a liquid crystal control element of the liquid crystal panel, and acquires a basic signal supplied by a voltage supplier and a first signal provided by the voltage supplier and transferred by a switch, so as to adjust a signal difference of the clock signal. When a counter judges that the liquid crystal panel is enabled and a count condition is reached, a switch acts to transfer a second signal provided by the voltage supplier, and the clock signal is adjusted to satisfy a signal difference between the basic signal and the second signal.
    Type: Application
    Filed: June 1, 2011
    Publication date: June 14, 2012
    Inventors: Ming Han TSAI, Yuan Hsin TSOU, Kuang Lang Chen
  • Publication number: 20110292309
    Abstract: A stereoscopic image displaying method includes providing a left eye information during a left eye displaying time; providing a first vertical blanking interval (VBI) and opening a left eye shutter of a shutter glasses; providing a right eye information during a right eye displaying time; providing a second VBI and opening a right eye shutter of the shutter glasses; and increasing a backlight brightness respectively when the left eye shutter is opened and when the right eye shutter is opened, or respectively during the first VBI and second VBI, and reducing the backlight brightness during closing the left eye shutter and the right eye shutter, or during the left eye display time and the right eye displaying time.
    Type: Application
    Filed: August 31, 2010
    Publication date: December 1, 2011
    Inventors: Hsiang-Tan Lin, Kuang-Lang Chen, Chun-Chieh Chiu, Shih-Chieh Lin, Tzu-Chiang Shen
  • Patent number: 8054287
    Abstract: A driving apparatus, a driving method and a liquid crystal display (LCD) using the same are provided, wherein the method includes the following steps of: setting a color display sequence, wherein the color display sequence is RGBG, RGRB or RBGB; alternately reading frame data from a first frame register and a second register according to a frame period having three field periods; and sequentially displaying four color data in a cycle period having four field periods according to the color display sequence and the read frame data. By utilizing the method in the present invention, color loss of a field sequential color display occurred in a lower temperature environment is improved.
    Type: Grant
    Filed: December 11, 2008
    Date of Patent: November 8, 2011
    Assignee: Chunghwa Picture Tubes, Ltd.
    Inventors: Wen-Chih Tai, Kuang-Lang Chen, Chia-Lin Liu, Chi-Neng Mo
  • Publication number: 20110096107
    Abstract: A method for driving a color sequential liquid crystal display device first provides a vertical synchronization signal for defining a driving period, a field synchronization signal for defining a plurality of fields in the driving period, and a plurality of gamma voltages each related to a corresponding field in the driving period. Next, a plurality of control signals are outputted according to the vertical synchronization signal and the field synchronization signal. In a specific field, a corresponding gamma voltage among the plurality of gamma voltages is outputted according to the plurality of control signals.
    Type: Application
    Filed: January 26, 2010
    Publication date: April 28, 2011
    Inventors: Wen-Chih Tai, Chi-Chung Tsai, Kai-Ting Hu, Chi-Neng Mo, Kuang-Lang Chen
  • Publication number: 20100295763
    Abstract: An image processing device and a method thereof are provided. The image processing device includes a controller and an image processing unit. The controller generates a timing control signal according to an enabling signal. The image processing unit is coupled to the controller. The image processing unit receives a gray scale value of a pixel at a time and determines whether to change the gray scale value of the pixel at the time to a predetermined gray scale value according to the timing control signal. Thereby, the image quality is improved.
    Type: Application
    Filed: September 2, 2009
    Publication date: November 25, 2010
    Applicant: Chunghwa Picture Tubes, LTD.
    Inventors: Huang-Min Chen, Kuang-Lang Chen, Wen-Chih Tai, Shian-Jun Chiou, Chi-Neng Mo
  • Publication number: 20100039367
    Abstract: A driving apparatus, a driving method and a liquid crystal display (LCD) using the same are provided, wherein the method includes the following steps of: setting a color display sequence, wherein the color display sequence is RGBG, RGRB or RBGB; alternately reading frame data from a first frame register and a second register according to a frame period having three field periods; and sequentially displaying four color data in a cycle period having four field periods according to the color display sequence and the read frame data. By utilizing the method in the present invention, color loss of a field sequential color display occurred in a lower temperature environment is improved.
    Type: Application
    Filed: December 11, 2008
    Publication date: February 18, 2010
    Applicant: CHUNGHWA PICTURE TUBES, LTD.
    Inventors: Wen-Chih Tai, Kuang-Lang Chen, Chia-Lin Liu, Chi-Neng Mo
  • Publication number: 20100013755
    Abstract: A color sequential liquid crystal display (color-sequential-LCD) and an LCD panel driving method thereof are disclosed. By changing the arrangement of the pixel array in the LCD panel and turning on several rows of pixels in the LCD panel at the same time, so that the color sequential LCD of the present invention not only respectively reduces the scanning time of red, green and blue video data to make the liquid crystal molecules of all the pixels on the LCD panel have enough response time but also respectively increases the lighting-up time of the red, green and blue light emitting diodes of the back light module to promote the display brightness of the entire LCD panel. Therefore, the color sequential LCD of the present invention displays a single color or a full color image without the bottom color mixing phenomenon, and furthermore, the display brightness thereof can be promoted.
    Type: Application
    Filed: September 10, 2008
    Publication date: January 21, 2010
    Applicant: Chunghwa Picture Tubes, LTD.
    Inventors: Shian-Jun Chiou, Kuang-Lang Chen, Wen-Chih Tai, Chi-Neng Mo, Chia-Lin Liu
  • Patent number: 7403174
    Abstract: A method and an apparatus for improving the gray-scale linearity of a plasma display. At least two types of gray-scale allocations are mixed for forming the original gray scale, or different gray scales are mixed to derive the original gray scale, so as to obtain the required brightness. Therefore, by using multiple combinations to adjust the original gray scale, the required brightness is obtained, and the gray scale linearity for all the gray scales is improved.
    Type: Grant
    Filed: February 12, 2003
    Date of Patent: July 22, 2008
    Assignee: Chunghwa Picture Tubes, Ltd.
    Inventors: Chun-Hsu Lin, Hui-Chen Lin, Ching-Hui Lin, Kuang-Lang Chen
  • Publication number: 20080079677
    Abstract: A method for driving a display device includes the following steps: providing a first displaying data to a first region of a display panel, wherein the first displaying data is a first color displaying data; providing a backlight source of the first color at the first region; and displaying a black color at a specific region neighboring to the first region. Accordingly two different colors will not neighbor with each other based on the above-mentioned method and thus the color deviation problem caused by different color backlight sources is solved by this invention.
    Type: Application
    Filed: April 24, 2007
    Publication date: April 3, 2008
    Applicant: CHUNGHWA PICTURE TUBES, LTD.
    Inventors: Wen-Chih Tai, Kuang-Lang Chen, Chi-Neng Mo, Chia-Lin Liu
  • Patent number: 7126563
    Abstract: Brightness correction apparatus and method for a plasma display, where the non-linear relationship between the gray scale and the brightness of the plasma display is considered. The brightness error is measured to build up a brightness error table. When the gray scale data of the currently displaying pixel is received, the brightness error diffusion method is applied. The weighted display brightness error of the neighboring pixel is incorporated for calculation to obtain an optimal display result. When the modified output gray scale data is derived by calculation, the brightness error table is looked up, and the display brightness error of the currently displaying pixel is thus saved to provide modification calculation for other pixels.
    Type: Grant
    Filed: July 24, 2002
    Date of Patent: October 24, 2006
    Assignee: Chunghwa Picture Tubes, Ltd.
    Inventors: Chun-Hsu Lin, Hsu-Pin Kao, Yi-Chia Shan, Kuang-Lang Chen
  • Patent number: 7102696
    Abstract: A process of effecting various anti compensation processes on input image on a plasma display panel comprises the steps of a) performing a gamma (i.e., ? equal to 0.45) compensation process on a video signal received by the PDP with respect to a ?; b) dividing the video signal into at least two segments based on a gray level thereof; and c) performing a variety of anti compensation processes on the video signal in respective segment. A smaller ? is used in the anti compensation process with respect to the video signal in a range of low gray level for increasing the gray level in the range of low gray level. Similarly, a larger ? is used in the anti compensation process with respect to the video signal in a range of high gray level for increasing a gradient in the range of high gray level, thereby obtaining a sharp image contrast, improving image quality, and rendering an enhanced image brightness.
    Type: Grant
    Filed: May 18, 2001
    Date of Patent: September 5, 2006
    Assignee: Chunghwa Tubes, Ltd.
    Inventors: Shiuh-Bin Kao, Liang-Kuei Hsu, Kuang-Lang Chen
  • Patent number: 6987357
    Abstract: A driving electrode structure of a plasma display panel is described. The driving electrode structure has a driving electrode located in one luminant cell of each pixel. The driving electrode is formed on a transparent electrode and separated by a distance from the side of the transparent electrode adjacent to the edge of the luminant cells. The driving electrode has two branches coupled to a main electrode or a side electrode at the side of the transparent electrode adjacent to the edge of luminant cells. The driving electrode approximates the discharge center of the luminant cell to improve the driving characteristic.
    Type: Grant
    Filed: January 2, 2004
    Date of Patent: January 17, 2006
    Assignee: Chunghwa Picture Tubes, Ltd.
    Inventors: Hsu-Pin Kao, Yuan-Chi Lin, Ching-Hui Lin, Kuang-Lang Chen
  • Patent number: 6838826
    Abstract: A discharge electrode structure of a plasma display panel is described. The discharge electrode structure includes a plurality of expanding electrodes or expanding portions that each one has a symmetric structure. The expanding electrodes are alternately coupled to a pair of conductive electrodes that are on the edge of a plurality of luminant cells in one row. Therefore, oblique symmetric electrodes are disposed at opposite corner location of each luminant cell.
    Type: Grant
    Filed: January 28, 2003
    Date of Patent: January 4, 2005
    Assignee: Chunghwa Picture Tubes, Ltd.
    Inventors: Chun-Hsu Lin, Wen-Rung Huang, Kuang-Lang Chen, Sheng-Chi Lee
  • Patent number: 6794819
    Abstract: An electrode structure with white balance adjustment for plasma display panel is described. The electrode structure has a comb electrode, a first transparent electrode and a second transparent electrode. The first transparent electrode and the second transparent electrode are separated from the comb electrode, respectively. Changing the profile of the first transparent electrode and the second transparent electrode increases the flexibility of the transparent electrodes. Further, the width of the first electrodes responsive to the luminous regions is adjusted to control the luminance through the first transparent electrode so that white balance of the plasma display panel is precisely corrected.
    Type: Grant
    Filed: December 10, 2002
    Date of Patent: September 21, 2004
    Assignee: Chunghwa Picture Tubes, Ltd.
    Inventors: Hsu-Pin Kao, Yen-Ting Shen, Yi-Sheng Yu, Ching-Hui Lin, Kuang-Lang Chen
  • Patent number: 6791265
    Abstract: A driving electrode structure of a plasma display panel is described. The driving electrode structure has a driving electrode located in one luminant cell of each pixel. The driving electrode is formed on a transparent electrode and separated by a distance from the side of the transparent electrode adjacent to the edge of the luminant cells. The driving electrode has two branches coupled to a main electrode or a side electrode at the side of the transparent electrode adjacent to the edge of luminant cells. The driving electrode approximates the discharge center of the luminant cell to improve the driving characteristic.
    Type: Grant
    Filed: July 9, 2002
    Date of Patent: September 14, 2004
    Assignee: Chunghwa Picture Tubes, Ltd.
    Inventors: Hsu-Pin Kao, Yuan-Chi Lin, Ching-Hui Lin, Kuang-Lang Chen
  • Patent number: 6774873
    Abstract: A method for implementing error diffusion on a plasma display panel (PDP) comprises the steps of performing an anti compensation process on a received video signal of the PDP; diffusing an error generated by a first one of a plurality of pixels to a plurality of adjacent pixels; absorbing errors generated by the plurality of adjacent pixels by the first pixel; and multiplying each of a plurality of numeric weightings and the error of each of the adjacent pixels to obtain an error function of the first pixel. This is effected in a cost effective while simple addition circuit for solving the problem of low level contouring in PDP due to insufficient gray scale of video signal in low gray scale.
    Type: Grant
    Filed: June 1, 2001
    Date of Patent: August 10, 2004
    Assignee: Chunghwa Picture Tubes, Ltd.
    Inventors: Liang-Kuei Hsu, Yao-Hung Lai, Shiuh-Bin Kao, Kuang-Lang Chen
  • Publication number: 20040145315
    Abstract: A discharge electrode structure of a plasma display panel is described. The discharge electrode structure includes a plurality of expanding electrodes or expanding portions that each one has a symmetric structure. The expanding electrodes are alternately coupled to a pair of conductive electrodes that are on the edge of a plurality of luminant cells in one row. Therefore, oblique symmetric electrodes are disposed at opposite corner location of each ruminant cell.
    Type: Application
    Filed: January 28, 2003
    Publication date: July 29, 2004
    Inventors: Chun-Hsu Lin, Wen-Rung Huang, Kuang-Lang Chen, Sheng-Chi Lee
  • Publication number: 20040140768
    Abstract: A driving electrode structure of a plasma display panel is described. The driving electrode structure has a driving electrode located in one luminant cell of each pixel. The driving electrode is formed on a transparent electrode and separated by a distance from the side of the transparent electrode adjacent to the edge of the luminant cells. The driving electrode has two branches coupled to a main electrode or a side electrode at the side of the transparent electrode adjacent to the edge of luminant cells. The driving electrode approximates the discharge center of the luminant cell to improve the driving characteristic.
    Type: Application
    Filed: January 2, 2004
    Publication date: July 22, 2004
    Inventors: Hsu-Pin Kao, Yuan-Chi Lin, Ching-Hui Lin, Kuang-Lang Chen
  • Patent number: 6737804
    Abstract: A barrier rib structure for a plasma display panel is described. The barrier rib structure formed on a back substrate has a plurality of parallel barrier ribs. Each barrier rib has a plurality of discharge spaces therein divided by separate walls. Each of the discharge spaces is connected to a small gas channel beside the barrier rib through a small connect opening.
    Type: Grant
    Filed: March 21, 2002
    Date of Patent: May 18, 2004
    Assignee: Chungwa Picture Tubes
    Inventors: Hsu-Pin Kao, Yi-Sheng Yu, Ching-Hui Lin, Kuang-Lang Chen, Sheng-Chi Lee