Patents by Inventor Meng-Che Tsai

Meng-Che Tsai 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: 20140340355
    Abstract: A signal processing method for a touch panel is provided. The touch panel includes a first sensing region and a second sensing region. The first sensing region is monitored by at least one first sensor to generate a first monitoring result. The second sensing region is monitored by at least one second sensor to generate a second monitoring result. The signal processing method includes determining whether a touch point formed in the first sensing region is close to the second sensing region, and generating position information of the touch point according to the first monitoring result and the second monitoring result when the touch point is close to the second sensing region.
    Type: Application
    Filed: May 15, 2014
    Publication date: November 20, 2014
    Applicant: MStar Semiconductor, Inc.
    Inventors: Chao-Ting Cheng, Meng-Che Tsai, Chao-Cheng Wen
  • Publication number: 20140292694
    Abstract: A display control device for controlling a display apparatus is provided. The display apparatus includes a touch panel and is for displaying an image signal of a computer host. The display control device includes a touch panel controller and a screen controller. The touch panel controller controls the touch panel to perform touch sensing and accordingly generates a touch control signal. The screen controller controls the display apparatus to operate between an adjustment mode and a display mode according a mode signal. When the display apparatus operates in the adjustment mode, the screen controller performs on-screen display (OSD) control according to the touch control signal to adjust the display apparatus. When the display apparatus operates in the display mode, the touch control signal is transmitted to the computer host to control the computer host.
    Type: Application
    Filed: March 28, 2014
    Publication date: October 2, 2014
    Applicant: MStar Semiconductor, Inc.
    Inventors: Sheng-Yueh Lin, Jiunn-Kuang Chen, Chi-Chun Cheng, Chieh-Huang Tu, Meng-Che Tsai
  • Patent number: 8825913
    Abstract: A universal quick port switching method and an associated apparatus are provided. An apparatus for universally and quickly detecting port switching includes a plurality of resistors for receiving a plurality of ground signals from a plurality of receiving ports, respectively; a divided-voltage detecting circuit coupled to the resistors, for generating a predictable divided voltage; and an analog-to-digital converter coupled to the divided-voltage detecting circuit, for generating a digital output according to the predictable divided voltage. The detecting apparatus determines whether the receiving ports are active or not according to the digital output.
    Type: Grant
    Filed: December 23, 2008
    Date of Patent: September 2, 2014
    Assignee: MStar Semiconductor, Inc.
    Inventor: Meng Che Tsai
  • Publication number: 20140218320
    Abstract: A touch panel correcting apparatus for correcting a first coordinate and a second coordinate associated with a touch position is provided. The correcting apparatus includes a memory and a controller. The memory stores a look-up table storing a plurality of corrected coordinates. The controller selects a corrected first coordinate from the look-up table according to the first coordinate, and substitutes the corrected first coordinate and the second substitute into a function to generate a corrected second coordinate corresponding to the second coordinate.
    Type: Application
    Filed: January 27, 2014
    Publication date: August 7, 2014
    Applicant: MStar Semiconductor, Inc.
    Inventors: Chun-Chen Liu, Meng-Che Tsai
  • Patent number: 8767302
    Abstract: A laminated optical disk, applied for lighting system or solar energy system, includes a plurality of annular lenses, a base and a circular light guiding unit. The annular lenses are arranged in order from center to outside to form a disk-structure. Each annular lens has a light-input curved surface and a light-output curved surface respectively matching the different thickness of the base. The light-input curved surface is opposite to the center. The light-output curved surface is opposite to the light-input curved surface, and facing to the center. The light is incident on the light-input curved surface, refracted and tended to concentrate by the light-input curved surface. Besides, the light exiting from the annular lens is to be refracted to the direction of the center by the light-output curved surface. The base of the laminated optical disk can significantly improve the light leakage problem by different annular lenses.
    Type: Grant
    Filed: June 18, 2013
    Date of Patent: July 1, 2014
    Assignee: National Taiwan University of Science and Technology
    Inventors: Jong-Woei Whang, Chieh-Jen Hsiao, Meng-Che Tsai, Chung-Wei Wang, Ya-Hui Chang
  • Publication number: 20140139255
    Abstract: A display panel includes a first substrate, a plurality of pixel units, a plurality of first signal lines, a first testing line and a second testing line. The first signal lines are disposed on a peripheral area and electrically connected to corresponding pixel units. The first signal lines include a plurality of first sets of signal lines and a plurality of second sets of signal lines alternatively arranged. The first and second sets of signal lines are formed on different layers. The first testing line is electrically connected to the first sets of signal lines. The second testing line is electrically connected to the second sets of signal lines.
    Type: Application
    Filed: March 14, 2013
    Publication date: May 22, 2014
    Applicant: AU OPTRONICS CORP.
    Inventors: Po-Ya Chen, Meng-Che Tsai
  • Publication number: 20140126063
    Abstract: A laminated optical disk, applied for lighting system or solar energy system, includes a plurality of annular lenses, a base and a circular light guiding unit. The annular lenses are arranged in order from center to outside to form a disk-structure. Each annular lens has a light-input curved surface and a light-output curved surface respectively matching the different thickness of the base. The light-input curved surface is opposite to the center. The light-output curved surface is opposite to the light-input curved surface, and facing to the center. The light is incident on the light-input curved surface, refracted and tended to concentrate by the light-input curved surface. Besides, the light exiting from the annular lens is to be refracted to the is direction of the center by the light-output curved surface. The base of the laminated optical disk can significantly improve the light leakage problem by different annular lenses.
    Type: Application
    Filed: June 18, 2013
    Publication date: May 8, 2014
    Inventors: JONG-WOEI WHANG, CHIEH-JEN HSIAO, MENG-CHE TSAI, CHUNG-WEI WANG, YA-HUI CHANG
  • Patent number: 8718331
    Abstract: A method for detecting left-eye/right-eye images is capable of effectively and accurately detecting a sequence or positions of left-eye/right-eye image frames of a stereo image signal. The method includes performing block matching on a target block corresponding to two consecutive image frames of an image signal to determine a motion vector; and performing left-eye/right-eye image determination on a current image frame from the two consecutive image frames according to the motion vector.
    Type: Grant
    Filed: July 28, 2010
    Date of Patent: May 6, 2014
    Assignee: MStar Semiconductor, Inc.
    Inventors: Ren Kuan Liang, Yu-Chieh Hung, Meng-Che Tsai
  • Publication number: 20140104232
    Abstract: A self-capacitive touch control apparatus includes a plurality of electrodes, a plurality of sensors, and a number determining module. The sensors detect capacitance changes in the electrodes to generate a plurality of sensing results. The number determining module calculates a total sensing amount according to the sensing results, and determines the number of touch points according to the total sensing amount.
    Type: Application
    Filed: October 16, 2013
    Publication date: April 17, 2014
    Applicant: MStar Semiconductor, Inc.
    Inventors: Chun-Chen Liu, Meng-Che Tsai
  • Publication number: 20140049121
    Abstract: A self-capacitive touch panel including a border electrode and a central electrode is provided. The border electrode has a first centroid. The central electrode has a second centroid A first average distance from the first centroid to all possible touch points in the border electrode is smaller than a second average distance from the second centroid to all possible touch points in the central electrode.
    Type: Application
    Filed: August 16, 2013
    Publication date: February 20, 2014
    Applicant: MStar Semiconductor, Inc.
    Inventors: Chun-Chen Liu, Meng-Che Tsai
  • Publication number: 20140028334
    Abstract: A self-capacitive touch panel including a border region and a central region is provided. The border region has a first area and corresponds to a P number of first sensors. The central region has a second area and corresponds to a Q number of second sensors. A ratio of P to the first area is greater than a ratio of Q to the second area.
    Type: Application
    Filed: July 24, 2013
    Publication date: January 30, 2014
    Applicant: MStar Semiconductor, Inc.
    Inventors: Chun-Chen Liu, Meng-Che Tsai
  • Publication number: 20130328826
    Abstract: A touch panel including multiple electrodes is provided. The electrodes form a sensing area and are disposed on a same plane. The sensing area has a first border and a second border that are substantially perpendicular to each other. The electrodes include one parallelogram electrode. The parallelogram electrode has two first sides parallel to the first border and two second sides parallel to neither the first border nor the second border.
    Type: Application
    Filed: January 23, 2013
    Publication date: December 12, 2013
    Applicant: MSTAR SEMICONDUCTOR, INC.
    Inventors: Chun-Chen Liu, Meng-Che Tsai, Te-Wei Hsu
  • Patent number: 8456651
    Abstract: A focal position detecting apparatus, for detecting a focusing condition and a tilting condition of an object, includes a planar beam generating module, an optical system, an optical sensor and a cylindrical lens. The planar beam generating module generates a planar light beam along a first path. The optical system is disposed on the first path, wherein the planar light beam, reflected by the object, passes through the optical system along a second path. The optical sensor is disposed on the second path. The cylindrical lens is disposed on the second path between the optical system and the optical sensor and an axis of the cylindrical lens is perpendicular to the second path. The planar light beam passes through the optical system and the cylindrical lens along the second path, before it is incident on the optical sensor to form a linear light spot for determining defocusing degree.
    Type: Grant
    Filed: February 11, 2010
    Date of Patent: June 4, 2013
    Assignee: Industrial Technology Research Institute
    Inventors: Shun-Sheng Ke, Meng-Che Tsai, Yang-Cheng Lin, Pin-Hao Hu, Yu-Hsiu Chang
  • Patent number: 8411810
    Abstract: A circuit with adaptive synchronization and a method thereof is provided. The synchronous receiving circuit adaptively adjusts the timing of a clock signal generated therein for receiving data without accompanying a clock signal for synchronization. The synchronous receiving circuit includes a clock generator, an edge detector, a synchronization unit and a latch. The clock generator generates a first clock signal according to an input data signal. The edge detector detects edges to generate an indication signal. The synchronization unit is coupled to the clock generator and the edge detector, and adaptively adjusts the first clock signal according to the indication signal. The latch latches the input data signal according to the adjusted first clock signal.
    Type: Grant
    Filed: April 6, 2009
    Date of Patent: April 2, 2013
    Assignee: MStar Semiconductor, Inc.
    Inventor: Meng Che Tsai
  • Publication number: 20120306833
    Abstract: A method for driving a display panel includes in a first time slot of a polarity inversion period turning on a plurality of first pixels in a first row via a first scan line, and providing a common voltage with a first potential; in a second time slot of the polarity inversion period turning on a plurality of second pixels in the first row via a second scan line, and providing the common voltage with a second potential; in a third time slot of the polarity inversion period turning on a plurality of first pixels in a second row via a third scan line, and providing the common voltage with the second potential; and in a fourth time slot of the polarity inversion period turning on a plurality of second pixels in the second row via a fourth scan line, and providing the common voltage with the first potential.
    Type: Application
    Filed: December 12, 2011
    Publication date: December 6, 2012
    Inventors: Yun-Chung Lin, Chung-Lung Li, Meng-Che Tsai
  • Patent number: 8294307
    Abstract: An apparatus for voltage controlling used in a portable electronic device includes an HDMI connector, a detector and a voltage selector. The HDMI connector is to establish a connection with an external device. The detector is to detect whether the connection is established by detecting a voltage of a hot plug detect pin of the HDMI connector and to further compare the voltage to a threshold voltage so as to generate a control signal accordingly. The voltage selector is to select one of a first voltage and a second voltage based on the control signal and to further output the selected voltage to a power pin of the HDMI connector. In the apparatus, the control signal orders the voltage selector to select the second voltage if the voltage is not lower than the threshold voltage, and to select the first voltage otherwise.
    Type: Grant
    Filed: August 11, 2008
    Date of Patent: October 23, 2012
    Assignee: MStar Semiconductor Inc.
    Inventor: Meng-Che Tsai
  • Patent number: 8289456
    Abstract: Disclosed is an image correction method of correcting an image including a number of horizontal image scan lines each corresponding to a number of pieces of image data. The method includes the following steps: segmenting each of the horizontal image scan lines into a plurality of segments according to a plurality of nodes, each of the segments having an original segment length; looking up a table to generate at least one correction parameter according to a selection signal; generating a gain value according to a control signal; correcting the original segment length to generate an adjusted segment length according to the gain value and the correction parameter; and altering positions of the plurality of nodes to correct the image according to the adjusted segment length.
    Type: Grant
    Filed: June 5, 2008
    Date of Patent: October 16, 2012
    Assignee: Mstar Semiconductor, Inc.
    Inventors: Ren-Kuan Liang, Meng-Che Tsai, Yu-Chieh Hung
  • Patent number: 8289460
    Abstract: A pixel structure is provided. Each pixel region has a first pixel unit disposed on a first sub-pixel region and a second pixel unit disposed on a second sub-pixel region. A common line crossing over the first and the second sub-pixel regions has a first common electrode portion disposed within a first common capacitor region in the second sub-pixel region. A first capacitor electrode of the first pixel unit extends to the first common capacitor region from the first sub-pixel region, so that the first capacitor electrode overlaps the first common electrode portion to form a first extending capacitor. A second pixel electrode of the second pixel unit disposed within the second sub-pixel region. The second pixel electrode overlaps the first common electrode portion to constitute a second storage capacitor. The second storage capacitor and the first extending capacitor are stacked on the first common capacitor region.
    Type: Grant
    Filed: April 2, 2010
    Date of Patent: October 16, 2012
    Assignee: Au Optronics Corporation
    Inventors: Meng-Che Tsai, Tung-Huang Chen
  • Publication number: 20120176349
    Abstract: A display system capable of being coupled to a host includes: a display controller; a display port (DP), including a main link, an auxiliary channel and a signal detection end; a DP engine, coupled to the DP via the main link, the auxiliary channel and the signal detection end, for outputting an image signal to the display controller; and a detection circuit, coupled to the DP via the auxiliary channel, for selectively outputting an indication signal to the DP engine in response to a communication signal in the auxiliary signal pair in the auxiliary channel.
    Type: Application
    Filed: January 10, 2012
    Publication date: July 12, 2012
    Applicant: MStar Semiconductor, Inc.
    Inventor: Meng-Che Tsai
  • Patent number: 8176228
    Abstract: A quick port-switching method and associated apparatus are provided. A quick port-switching display control circuit includes a display controller, a first TMDS port, a second TMDS port and an analog video port. The display controller has a first GPIO pin and a second GPIO pin. The first TMDS port, second TMDS port and analog video port are coupled to the display controller for receiving a first TMDS input, a second TMDS input and an analog video signal, respectively. The first TMDS input and second TMDS input include a first hot-plugging signal and a second hot-plugging signal to be received by the first GPIO pin and second GPIO pin, respectively. The display controller determines whether the first TMDS input is valid by detecting whether the first hot-plugging signal is asserted, and determines whether the second TMDS input is valid by detecting whether the second hot-plugging signal is asserted.
    Type: Grant
    Filed: September 18, 2008
    Date of Patent: May 8, 2012
    Assignee: MStar Semiconductor, Inc.
    Inventor: Meng-Che Tsai