Patents by Inventor Yu-Hsi Ho
Yu-Hsi Ho 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).
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Publication number: 20120086627Abstract: A display device having bi-directional shift registers is disclosed. The display device includes a display panel which has N gate lines, a first set of dummy registers, a second set of dummy registers, a plurality of valid shift registers coupled between the two sets of dummy registers, and a first start pulse signal generator coupled to the first valid register for generating the first start pulse signal to the first valid register to enable the first gate line. The first valid register is coupled to the first set of dummy registers. The Nth valid register is coupled to the second set of dummy registers.Type: ApplicationFiled: October 11, 2011Publication date: April 12, 2012Inventors: Yung-Chih Chen, Kuo-Hua Hsu, Kun-Yueh Lin, Yu-Chung Yang, Yu-Hsi Ho
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Patent number: 8149025Abstract: An exemplary gate driving circuit is adapted for receiving an external gate power supply voltage and an external control signal, sequentially generating multiple internal shift data signal groups and thereby sequentially outputting multiple gate signals. Each of the internal shift data signal groups includes multiple sequentially-generated internal shift data signals. The gate driving circuit includes multiple gate signal generating modules. Each of the gate signal generating modules includes a voltage modulation circuit and a gate output buffer circuit. The voltage modulation circuit modulates the external gate power supply voltage according to a corresponding one of the internal shift data signal groups and the external control signal, and thereby a modulated voltage signal is obtained. The gate output buffer circuit includes a plurality of parallel-coupled output stages. The output stages output the modulated voltage signal as a part of the gate signals during the output stages being sequentially enabled.Type: GrantFiled: May 5, 2010Date of Patent: April 3, 2012Assignee: AU Optronics Corp.Inventors: Wen-Chiang Huang, Chih-Sung Wang, Yu-Hsi Ho
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Publication number: 20120049896Abstract: A source driver includes at least one source driving unit and a voltage source generation circuit. The voltage source generation circuit is used for generating a first voltage provided for the at least one source driving unit. The voltage source generation circuit includes a first amplifier integrated in a source driving unit of the at least one source driving unit. The first voltage is provided to the at least one source driving unit.Type: ApplicationFiled: November 4, 2010Publication date: March 1, 2012Inventors: Yung-Hsu Lin, Chun-Fan Chung, Yu-Hsi Ho
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Publication number: 20110285693Abstract: A driving method with reducing image sticking effect is disclosed. The driving method includes applying a voltage on the data lines for trapping impurities crossing the data lines and lowering the degree of the image sticking effect, and applying different asymmetric waveforms to different data lines for trapping impurities crossing the data lines and lowering the degree of the image sticking effect.Type: ApplicationFiled: August 4, 2011Publication date: November 24, 2011Inventors: Pin-Miao Liu, Shui-Chih Lien, Chia-Horng Huang, Chien-Huang Liao, Yu-Hsi Ho, Ting-Jui Chang, Yao-Jen Hsieh, Jenn-Jia Su
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Publication number: 20110273226Abstract: An exemplary gate driving circuit is adapted for receiving an external gate power supply voltage and an external control signal, sequentially generating multiple internal shift data signal groups and thereby sequentially outputting multiple gate signals. Each of the internal shift data signal groups includes multiple sequentially-generated internal shift data signals. The gate driving circuit includes multiple gate signal generating modules. Each of the gate signal generating modules includes a voltage modulation circuit and a gate output buffer circuit. The voltage modulation circuit modulates the external gate power supply voltage according to a corresponding one of the internal shift data signal groups and the external control signal, and thereby a modulated voltage signal is obtained. The gate output buffer circuit includes a plurality of parallel-coupled output stages. The output stages output the modulated voltage signal as a part of the gate signals during the output stages being sequentially enabled.Type: ApplicationFiled: May 5, 2010Publication date: November 10, 2011Inventors: Wen-Chiang HUANG, Chih-Sung WANG, Yu-Hsi HO
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Publication number: 20110227892Abstract: A driving apparatus for driving a display panel includes a timing controller and a plurality of source drivers. The timing controller has a first output port and a second output port. The first output port is employed to output a first clock signal and plural first data signals. The second output port is employed to output a second clock signal and plural second data signals. Each source driver includes at least two operation mode control ends for receiving an operation mode control signal having at least two bits for setting at least first to third operation modes. If the operation mode control signal sets the source driver to operate in the first operation mode, the source driver is electrically connected to both the first and second output ports, for driving the display panel according to the first data signals, the second data signals, the first clock and the second clock.Type: ApplicationFiled: August 16, 2010Publication date: September 22, 2011Inventors: Meng-Ju Wu, Chun-Fan Chung, Yu-Hsi Ho
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Patent number: 8013823Abstract: A driving method with reducing image sticking effect is disclosed. The driving method includes applying a voltage on the data lines for trapping impurities crossing the data lines and lowering the degree of the image sticking effect, and applying different asymmetric waveforms to different data lines for trapping impurities crossing the data lines and lowering the degree of the image sticking effect.Type: GrantFiled: May 14, 2007Date of Patent: September 6, 2011Assignee: AU Optronics Corp.Inventors: Pin-Miao Liu, Shui-Chih Lien, Chia-Horng Huang, Chien-Huang Liao, Yu-Hsi Ho, Ting-Jui Chang, Yao Jen Hsieh, Jenn-Jia Su
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Publication number: 20110115780Abstract: A driving method with reducing image sticking effect is disclosed. The driving method includes applying a voltage on the data lines for trapping impurities crossing the data lines and lowering the degree of the image sticking effect, and applying different asymmetric waveforms to different data lines for trapping impurities crossing the data lines and lowering the degree of the image sticking effect.Type: ApplicationFiled: January 19, 2011Publication date: May 19, 2011Inventors: Pin-Miao Liu, Shui-Chih Lien, Chia-Horng Huang, Chien-Huang Liao, Yu-Hsi Ho, Ting-Jui Chang, Yao-Jen Hsieh, Jenn-Jia Su
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Publication number: 20110080396Abstract: A driving method with reducing image sticking effect is disclosed. The driving method includes applying a voltage on the data lines for trapping impurities crossing the data lines and lowering the degree of the image sticking effect, and applying different asymmetric waveforms to different data lines for trapping impurities crossing the data lines and lowering the degree of the image sticking effect.Type: ApplicationFiled: December 14, 2010Publication date: April 7, 2011Inventors: Pin-Miao Liu, Shui-Chih Lien, Chia-Horng Huang, Chien-Huang Liao, Yu-Hsi Ho, Ting-Jui Chang, Yao-Jen Hsieh, Jenn-Jia Su
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Patent number: 7764266Abstract: In the liquid crystal display device having a back-light source for illumination, image data is provided to the panel in successive frames such that the optical response of the liquid crystal in each pixel within a frame period has an impulse-like shape. The back-light source is controlled to illuminate the liquid crystal display panel such that the illumination is provided to the pixels for only part of the frame period. The optical response curve has a rising portion followed by a falling portion, and the back-light source is controlled by a timing control module such that the back-light is turned off at least when the optical response curve is in the falling portion. It is also possible to remove the image data from the pixels, or to control the charging and discharging of the electrodes to produce the impulse-like shape.Type: GrantFiled: December 21, 2006Date of Patent: July 27, 2010Assignee: AU Optronics CorporationInventors: Yu-Hsi Ho, Yu-Shian Yang, Chia-Horng Huang, Yao-Jen Hsieh
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Publication number: 20090267968Abstract: An exemplary gamma curve compensating method is used in a displaying process of a display system for inserting a plurality of grey-scale images to adjust the displaying quality of the display system. A grey-scale luminance of each grey-scale image is one of the grey-scales. The gamma curve compensating method includes: providing a plurality of look-up tables (LUTs) according to the different grey-scales; selecting a specific grey-scale of the different grey-scales as a grey-scale luminance of one of the grey-scale images and accordingly selecting a specific LUT of the LUTs corresponding to the specific grey-scale; and performing a gamma-curve compensating based on the specific LUT to keep the gamma curve of the display system invariable in the displaying process. A gamma curve compensating circuit and a display system for performing the gamma curve compensating method are also provided in the present invention.Type: ApplicationFiled: February 13, 2009Publication date: October 29, 2009Inventors: Shang-Chia LIAO, Yu-Hsi Ho, Yao-Jen Hsieh
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Publication number: 20090256850Abstract: A method for processing display data includes: storing an image data in a plurality of first-type memories by taking scanning line data as a unit; providing one of the scanning line data stored in a particular memory of the first-type memories to one of a plurality of second-type memories, the particular memory being one of the first-type memories, which are not receiving and storing the image data; and outputting the scanning line data stored in the second-type memories. Time periods for outputting the scanning line data of the image data from the second-type memories are not overlapped.Type: ApplicationFiled: April 10, 2009Publication date: October 15, 2009Inventors: Yu-Hsien YANG, Jih-Sheng Chen, Yu-Hsi Ho
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Publication number: 20090102781Abstract: A method for processing images in a liquid crystal display is provided. The method includes the steps of: acquiring a backlight index according to an image; adjusting a backlight according to the backlight index; acquiring a reference gray level according to the adjusted backlight, wherein the reference gray level lies in between a first gray level boundary and a second gray level boundary; transferring a gray level of the image into a corresponding output gray level according to the backlight index when the gray level of the image lying in between the reference gray level and the first gray level boundary; and transferring the gray level of the image into another corresponding output gray level according to a linear relationship when the gray level of the image lying in between the reference gray level and the second gray level boundary.Type: ApplicationFiled: April 16, 2008Publication date: April 23, 2009Applicant: AU OPTRONICS CORP.Inventors: Ming-Fon Chien, Ming-Jong Jou, Yao-Jen Hsieh, Yu-Hsi Ho
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Publication number: 20080192041Abstract: A liquid crystal display includes a system circuit, a source driver, a gate driver, and a plurality of pixel units. The system circuit is used for generating a first scan line clock signal, a second scan line clock signal, a first scan line control signal, and a second scan line control signal, based on a horizontal synchronous signal and a vertical synchronous signal. The source driver is used for generating a data signal voltage. The gate driver includes a first shift register, a second shift register and a plurality of logic circuits. The first shift register is used for generating a first gate-on signal in response to the first scan line control signal after the first scan clock signal is triggered. The second register is used for generating a second gate-on signal in response to the second scan line control signal after the second scan clock signal is triggered.Type: ApplicationFiled: July 19, 2007Publication date: August 14, 2008Applicant: Au Optronics Corp.Inventors: Yu-hsi Ho, Yao-jen Hsieh, Chih-wei Wang
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Publication number: 20080139300Abstract: A materialization system for virtual objects and a method thereof are disclosed. The system and the method according to the present invention transform information of a virtual object in a virtual game into a physical machine so as to make the physical machine have the same characters as the virtual object. Thus according to various characters of virtual objects, the user can create his/her own physical machine. The users can carry the physical machine with them to play games with others face to face with a new sense of fun, a sense of presence and visual realism.Type: ApplicationFiled: April 17, 2007Publication date: June 12, 2008Inventor: Yu-Hsi Ho
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Publication number: 20080111767Abstract: A driving method with reducing image sticking effect is disclosed. The driving method includes applying a voltage on the data lines for trapping impurities crossing the data lines and lowering the degree of the image sticking effect, and applying different asymmetric waveforms to different data lines for trapping impurities crossing the data lines and lowering the degree of the image sticking effect.Type: ApplicationFiled: May 14, 2007Publication date: May 15, 2008Inventors: Pin-Miao Liu, Shui-Chih Lien, Chia-Horng Huang, Chien-Huang Liao, Yu-Hsi Ho, Ting-Jui Chang, Yao Jen Hsieh, Jenn-Jia Su
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Publication number: 20070171317Abstract: In the liquid crystal display device having a back-light source for illumination, image data is provided to the panel in successive frames such that the optical response of the liquid crystal in each pixel within a frame period has an impulse-like shape. The back-light source is controlled to illuminate the liquid crystal display panel such that the illumination is provided to the pixels for only part of the frame period. The optical response curve has a rising portion followed by a falling portion, and the back-light source is controlled by a timing control module such that the back-light is turned off at least when the optical response curve is in the falling portion. It is also possible to remove the image data from the pixels, or to control the charging and discharging of the electrodes to produce the impulse-like shape.Type: ApplicationFiled: December 21, 2006Publication date: July 26, 2007Inventors: Yu-Hsi HO, Yu-Shian Yang, Chia-Horng Huang, Yao-Jen Hsieh
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Publication number: 20070165015Abstract: DDR_SDRAM chips running at 1.5 clock rate are used for transferring image data from an image data source to a source driver in a display panel. In general, P DDR_SDRAM chips running at a 1.5 clock rate are used to store frame data in N frames. If the frame date in each of the N frames is n bits and the memory space in the DDR_SDRAM chip is m, then P is a smallest integer equal to or greater than N multiplied by (n/m). In data transfer in a frame, a line period is partitioned into N segments and each DDR-SDRAM chip is separated into (N?1) parts such that the parts are used to read different data in the different frames. In order to share I/O pins when using a number of DDR_SDRAM chips, the read/write sequence for the all DDR_SDRAM chips follows the same command and address.Type: ApplicationFiled: December 22, 2006Publication date: July 19, 2007Inventors: Huan-Hsin Li, Yu-Hsi Ho, Yao-Jen Hsieh
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Publication number: 20070120801Abstract: A method for driving an active matrix display wherein each image frame is divided into a number of displayed frame portions, each of which is followed by a darker frame portion. The image data in the darker frame portion is removed so as to allow the pixel luminance to diminish. The temporal separation between the displayed frame portion and the following darker frame portion is smaller than a frame time. In a display where the lines are driven repetitively for forming the display image in a plurality of frame times, the image data provided to a pixel, after the luminance in that pixel changes from low to high, is adjusted so that the brightness of the pixel in the preceding frame times appear higher or not lower than that in following frames times.Type: ApplicationFiled: November 29, 2006Publication date: May 31, 2007Inventors: Yu-Hsi Ho, Wen-Chieh Chang, Fang-Yu Su, Yao-Jen Hsieh