Patents by Inventor Li-Ru Lyu

Li-Ru Lyu 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).

  • Patent number: 8884859
    Abstract: A liquid crystal display (LCD) driving apparatus and the method thereof is disclosed. The method receives a pixel and drives a pixel of the LCD according to the pixel value in a frame period, wherein the frame period is divided into a precharge field and a compensation field. Firstly, a precharge pixel value is decided according to the pixel and a reference value. A compensation pixel value is decided according to the precharge pixel. Next, a precharge driving voltage is determined according to the precharge pixel value. Afterwards, a compensation driving voltage is determined according to the compensation pixel value. Finally, the pixel is driven according to the precharge driving voltage and the compensation driving voltage respectively during the precharge field and the compensation field.
    Type: Grant
    Filed: April 19, 2011
    Date of Patent: November 11, 2014
    Assignee: AU Optronics Corp.
    Inventors: Chung-Kuang Tsai, Li-Ru Lyu
  • Patent number: 8866712
    Abstract: A liquid crystal display (LCD) driving apparatus and the method thereof is disclosed. The method receives a pixel and drives a pixel of the LCD according to the pixel value in a frame period, wherein the frame period is divided into a precharge field and a compensation field. Firstly, a precharge pixel value is decided according to the pixel and a reference value. A compensation pixel value is decided according to the precharge pixel. Next, a precharge driving voltage is determined according to the precharge pixel value. Afterwards, a compensation driving voltage is determined according to the compensation pixel value. Finally, the pixel is driven according to the precharge driving voltage and the compensation driving voltage respectively during the precharge field and the compensation field.
    Type: Grant
    Filed: May 17, 2013
    Date of Patent: October 21, 2014
    Assignee: AU Optronics Corp.
    Inventors: Chung-Kuang Tsai, Li-Ru Lyu
  • Patent number: 8576251
    Abstract: A scaling-up control method and a scaling-up control apparatus are used in a display device. The display device includes a scaler for converting an original image signal into an output image signal by performing a linear interpolation. Moreover, by utilizing a global locking mechanism and a local locking mechanism to perform the linear interpolation to determine the actual position of the interpolated pixel, the position error of the pixel position is largely reduced. Since the difference between the calculated pixel value and the ideal pixel value is reduced, the imaging quality of the output image signal is enhanced.
    Type: Grant
    Filed: May 3, 2011
    Date of Patent: November 5, 2013
    Assignee: AU Optronics Corp.
    Inventors: Feng-Ming Hsu, Yu-Hsien Yang, Li-Ru Lyu
  • Publication number: 20130249892
    Abstract: A liquid crystal display (LCD) driving apparatus and the method thereof is disclosed. The method receives a pixel and drives a pixel of the LCD according to the pixel value in a frame period, wherein the frame period is divided into a precharge field and a compensation field. Firstly, a precharge pixel value is decided according to the pixel and a reference value. A compensation pixel value is decided according to the precharge pixel. Next, a precharge driving voltage is determined according to the precharge pixel value. Afterwards, a compensation driving voltage is determined according to the compensation pixel value. Finally, the pixel is driven according to the precharge driving voltage and the compensation driving voltage respectively during the precharge field and the compensation field.
    Type: Application
    Filed: May 17, 2013
    Publication date: September 26, 2013
    Applicant: AU OPTRONICS CORP.
    Inventors: Chung-Kuang Tsai, Li-Ru Lyu
  • Publication number: 20120038822
    Abstract: A scaling-up control method and a scaling-up control apparatus are used in a display device. The display device includes a scaler for converting an original image signal into an output image signal by performing a linear interpolation. Moreover, by utilizing a global locking mechanism and a local locking mechanism to perform the linear interpolation to determine the actual position of the interpolated pixel, the position error of the pixel position is largely reduced. Since the difference between the calculated pixel value and the ideal pixel value is reduced, the imaging quality of the output image signal is enhanced.
    Type: Application
    Filed: May 3, 2011
    Publication date: February 16, 2012
    Applicant: AU OPTRONICS CORP.
    Inventors: Feng-Ming HSU, Yu-Hsien YANG, Li-Ru LYU
  • Publication number: 20120013655
    Abstract: A method for modulating display data of a flat display, comprises receiving a display datum with a digital count between a maximum digital count and a minimum digital count; modulating the display datum to correspondingly generate a modulated display datum, wherein the modulated display datum has a digital count same as that of the corresponding display datum when the digital count of the corresponding display datum is the same as the maximum digital count, and the modulated display datum has the digital count less than that of the corresponding display datum when the digital count of the corresponding display datum is less than the maximum digital count, wherein at least one modulated display datum has the digital count less than that of the corresponding display datum; and outputting the modulated display datum.
    Type: Application
    Filed: April 20, 2011
    Publication date: January 19, 2012
    Applicant: AU OPTRONICS CORP.
    Inventors: Fu-Chuan TSAI, Yu-Chun TSAI, Li-Ru LYU
  • Patent number: 8013830
    Abstract: A liquid crystal display and a driving method thereof. The liquid crystal display includes a liquid crystal display panel, a backlight module, a dimming control unit and a backlight module driving circuit. The liquid crystal display panel has a first display area and a second display area. The backlight module includes a plurality of lighting devices respectively corresponding to pixels in the first display area and the second display area. The dimming control unit generates at least one dimming control signal having a dimming frequency which is a multiple of a frame rate of the liquid crystal display panel. The backlight module driving circuit periodically drives the lighting devices in sequence according to the dimming control signal.
    Type: Grant
    Filed: May 31, 2006
    Date of Patent: September 6, 2011
    Assignee: AU Optronics Corp.
    Inventors: Chih-Che Hsu, Li-Ru Lyu
  • Publication number: 20110199347
    Abstract: A liquid crystal display (LCD) driving apparatus and the method thereof is disclosed. The method receives a pixel and drives a pixel of the LCD according to the pixel value in a frame period, wherein the frame period is divided into a precharge field and a compensation field. Firstly, a precharge pixel value is decided according to the pixel and a reference value. A compensation pixel value is decided according to the precharge pixel. Next, a precharge driving voltage is determined according to the precharge pixel value. Afterwards, a compensation driving voltage is determined according to the compensation pixel value. Finally, the pixel is driven according to the precharge driving voltage and the compensation driving voltage respectively during the precharge field and the compensation field.
    Type: Application
    Filed: April 19, 2011
    Publication date: August 18, 2011
    Applicant: AU OPTRONICS CORP.
    Inventors: Chung-Kuang Tsai, Li-Ru Lyu
  • Patent number: 7903073
    Abstract: A display is provided. The display includes a first timing controller, a second timing controller and drivers. The first timing controller receives and transmits a first portion of pixel values, in which the first portion of the pixel values includes the pixel values of at least two non-adjacent pixels. The second timing controller receives and transmits a second portion of the pixel values, in which the second portion of the pixel values includes the pixel values of at least two non-adjacent pixels. Each of the drivers receives respectively a part of the first portion of the pixel values transmitted by the first timing controller and a part of the second portion of the pixel values transmitted by the second timing controller. A method of transmitting image data in the display is also disclosed.
    Type: Grant
    Filed: November 29, 2007
    Date of Patent: March 8, 2011
    Assignee: Au Optronics Corporation
    Inventors: Chun-Fan Chung, Sheng-Kai Hsu, Yung-Tse Cheng, Szu-Che Yeh, Li-Ru Lyu, Chih-Sung Wang
  • Patent number: 7742030
    Abstract: A pixel of the LCD is driven according to a precharge pixel value and a compensation pixel value both being generated from a pixel value during a precharge field and a compensation field respectively. A precharge driving voltage corresponding to the precharge pixel value, and a compensation driving voltage corresponding to the compensation pixel value is then determined and used to drive the pixel. The lightness of the pixel driven according to the precharge pixel value and the compensation pixel value is substantially the same as the lightness of the pixel if driven according to the pixel value. The precharge field comes before the compensation field when the precharge pixel value is larger than the compensation pixel value, and the compensation field comes before the precharge field when the compensation pixel value is larger than the precharge pixel value.
    Type: Grant
    Filed: September 22, 2006
    Date of Patent: June 22, 2010
    Assignee: AU Optronics Corp.
    Inventors: Chung-Kuang Tsai, Li-Ru Lyu
  • Publication number: 20090189886
    Abstract: A liquid crystal display (LCD) driving apparatus and the method thereof is disclosed. The method receives a pixel and drives a pixel of the LCD according to the pixel value in a frame period, wherein the frame period is divided into a precharge field and a compensation field. Firstly, a precharge pixel value is decided according to the pixel and a reference value. A compensation pixel value is decided according to the precharge pixel. Next, a precharge driving voltage is determined according to the precharge pixel value. Afterwards, a compensation driving voltage is determined according to the compensation pixel value. Finally, the pixel is driven according to the precharge driving voltage and the compensation driving voltage respectively during the precharge field and the compensation field.
    Type: Application
    Filed: March 31, 2009
    Publication date: July 30, 2009
    Applicant: AU OPTRONICS CORP.
    Inventors: Chung-Kuang Tsai, Li-Ru Lyu
  • Patent number: 7548249
    Abstract: A method of dynamic frame presentation improvement for liquid crystal display is disclosed. The method comprises the step of providing a gray level mapping table, which maps the signal gray levels from 0 to N into mapped gray levels from 1 to N?1 level. Thereafter, the mapped data is fed into over-voltage compensation circuit. The over-voltage compensation circuit then implements process of the gray level ascending or gray level descending while the previous frame turns into current frame with a varied gray level.
    Type: Grant
    Filed: August 11, 2004
    Date of Patent: June 16, 2009
    Assignee: Au Optronics Corp.
    Inventors: Chung-Kuang Tsai, Li-Ru Lyu, Hung-Min Shih, Yung-Zhi Wu, Ya-Fang Chen
  • Patent number: 7532186
    Abstract: A liquid crystal display (LCD) driving apparatus and the method thereof is disclosed. The method receives a pixel and drives a pixel of the LCD according to the pixel value During a frame period, wherein the frame period is divided into a precharge field and a compensation field. Firstly, a precharge pixel value is decided according to the pixel and a reference value. A compensation pixel value is decided according to the precharge pixel. Next, a precharge driving voltage is determined according to the precharge pixel value. Afterwards, a compensation driving voltage is determined according to the compensation pixel value. Finally, the pixel is driven according to the precharge driving voltage and the compensation driving voltage respectively during the precharge field and the compensation field.
    Type: Grant
    Filed: May 19, 2004
    Date of Patent: May 12, 2009
    Assignee: AU Optronics Corp.
    Inventors: Chung-Kuang Tsai, Li-Ru Lyu
  • Publication number: 20090091527
    Abstract: A display is provided. The display includes a first timing controller, a second timing controller and drivers. The first timing controller receives and transmits a first portion of pixel values, in which the first portion of the pixel values includes the pixel values of at least two non-adjacent pixels. The second timing controller receives and transmits a second portion of the pixel values, in which the second portion of the pixel values includes the pixel values of at least two non-adjacent pixels. Each of the drivers receives respectively a part of the first portion of the pixel values transmitted by the first timing controller and a part of the second portion of the pixel values transmitted by the second timing controller. A method of transmitting image data in the display is also disclosed.
    Type: Application
    Filed: November 29, 2007
    Publication date: April 9, 2009
    Applicant: AU OPTRONICS CORPORATION
    Inventors: Chun-Fan Chung, Sheng-Kai Hsu, Yung-Tse Cheng, Szu-Che Yeh, Li-Ru Lyu, Chih-Sung Wang
  • Publication number: 20080211753
    Abstract: A liquid crystal display (LCD) driving apparatus and the method thereof is disclosed. The method receives a pixel and drives a pixel of the LCD according to the pixel value During a frame period, wherein the frame period is divided into a precharge field and a compensation field. Firstly, a precharge pixel value is decided according to the pixel and a reference value. A compensation pixel value is decided according to the precharge pixel. Next, a precharge driving voltage is determined according to the precharge pixel value. Afterwards, a compensation driving voltage is determined according to the compensation pixel value. Finally, the pixel is driven according to the precharge driving voltage and the compensation driving voltage respectively during the precharge field and the compensation field.
    Type: Application
    Filed: November 30, 2007
    Publication date: September 4, 2008
    Applicant: AU OPTRONICS CORP.
    Inventors: Chung-Kuang Tsai, Li-Ru Lyu
  • Publication number: 20070176883
    Abstract: A liquid crystal display and a driving method thereof. The liquid crystal display includes a liquid crystal display panel, a backlight module, a dimming control unit and a backlight module driving circuit. The liquid crystal display panel has a first display area and a second display area. The backlight module includes a plurality of lighting devices respectively corresponding to pixels in the first display area and the second display area. The dimming control unit generates at least one dimming control signal having a dimming frequency which is a multiple of a frame rate of the liquid crystal display panel. The backlight module driving circuit periodically drives the lighting devices in sequence according to the dimming control signal.
    Type: Application
    Filed: May 31, 2006
    Publication date: August 2, 2007
    Inventors: Chih-Che Hsu, Li-Ru Lyu
  • Publication number: 20070013630
    Abstract: A liquid crystal display (LCD) driving method is provided. A pixel of the LCD is driven according to a precharge pixel value and a compensation pixel value both being generated from a pixel value during a precharge field and a compensation field respectively. A precharge driving voltage corresponding to the precharge pixel value, and a compensation driving voltage corresponding to the compensation pixel value is then determined and used to drive the pixel. The lightness of the pixel driven according to the precharge pixel value and the compensation pixel value is substantially the same as the lightness of the pixel if driven according to the pixel value. The precharge field comes before the compensation field when the precharge pixel value is larger than the compensation pixel value, and the compensation field comes before the precharge field when the compensation pixel value is larger than the precharge pixel value.
    Type: Application
    Filed: September 22, 2006
    Publication date: January 18, 2007
    Applicant: AU OPTRONICS CORP.
    Inventors: Chung-Kuang Tsai, Li-Ru Lyu
  • Patent number: 7019716
    Abstract: A driving method for PDPs with variable vertical frequency. The method increases the sum of the sustain periods to obtain high brightness, by adjusting vertical frequency of a PDP through an image loading such that each image frame time displayed on the PDP is adjusted. The inventive driving method also adjusts total sustain pulses in the PDP through the image loading. To comply with the driving method, a driving apparatus is further provided to achieve the high brightness.
    Type: Grant
    Filed: May 5, 2003
    Date of Patent: March 28, 2006
    Assignee: AU Optronics Corp.
    Inventors: Chung-Kuang Tsai, Li-Ru Lyu
  • Publication number: 20060044295
    Abstract: A timing controller (TCON) for use in flat panel displays to dynamically tune the display parameters thereof. The TCON comprises a bus master coupled to a bus and a register for configuring the register with a default value, and a bus slave coupled to an external interface for input of a custom value to configure the register, thereby rendering display parameters dynamically tunable.
    Type: Application
    Filed: February 17, 2005
    Publication date: March 2, 2006
    Inventors: Hui-Lung Yu, Chia-Pu Ho, Li-Ru Lyu
  • Publication number: 20050253876
    Abstract: A method of dynamic frame presentation improvement for liquid crystal display is disclosed. The method comprises the step of providing a gray level mapping table, which maps the signal gray levels from 0 to N into mapped gray levels from 1 to N?1 level. Thereafter, the mapped data is fed into over-voltage compensation circuit. The over-voltage compensation circuit then implements process of the gray level ascending or gray level descending while the previous frame turns into current frame with a varied gray level.
    Type: Application
    Filed: August 11, 2004
    Publication date: November 17, 2005
    Inventors: Chung-Kuang Tsai, Li-Ru Lyu, Hung-Min Shih, Yung-Zhi Wu, Ya-Fang Chen