Patents by Inventor Chang-Xin Huang

Chang-Xin Huang 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: 20190025369
    Abstract: A display device and a method for detecting an ESD phenomenon are provided. The method including: encoding image data according to an encoding operation to generate a check code; sending the image data and the check code to a receiver by a transmitter, and obtaining a receiving image data and a receiving check code by the receiver; encoding the receiving image data according to the encoding operation to generate a verification check code; and determining whether the ESD phenomenon is occurred by comparing the check code and the verification check code.
    Type: Application
    Filed: August 29, 2017
    Publication date: January 24, 2019
    Applicant: Chunghwa Picture Tubes, LTD.
    Inventors: Chang-Xin Huang, Chiao-Lin Huang
  • Patent number: 9171515
    Abstract: A liquid crystal panel, a scanning circuit and a method for generating angle waves are provided. A scanning circuit for generating angle waves includes a scanning module and a plurality of angle wave modules. The scanning module has a plurality of scan output ends for outputting scan driving signals respectively in order, wherein the scan driving signal includes a first voltage and a second voltage. The angle wave modules are electrically connected to the scan output ends respectively in order; wherein a second output end of each angle wave module is electrically connected a first output end of next one of the angle wave modules, whereby a part of electrical energy received by the second output end of the angle wave modules is transmitted to the first output end of the next one of the angle wave modules.
    Type: Grant
    Filed: July 3, 2013
    Date of Patent: October 27, 2015
    Assignee: CHUNGHWA PICTURE TUBES, LTD.
    Inventor: Chang Xin Huang
  • Publication number: 20150169103
    Abstract: A touch display apparatus is provided. Touch scanning is executed through gate scan lines instead of being executed through touch scan lines.
    Type: Application
    Filed: February 24, 2014
    Publication date: June 18, 2015
    Applicant: Chunghwa Picture Tubes, LTD.
    Inventor: Chang-Xin Huang
  • Patent number: 9019257
    Abstract: A gate driving circuit of a display panel is provided. A gate driving voltage is accurately adjusted by the gate driving circuit according to an environmental temperature, given that the characteristics of a thermistor and a hysteresis loop are taken into consideration. Accordingly, the power loss caused by switching states of a display panel can be reduced.
    Type: Grant
    Filed: April 5, 2012
    Date of Patent: April 28, 2015
    Assignee: Chunghwa Picture Tubes, Ltd.
    Inventor: Chang-Xin Huang
  • Publication number: 20140218346
    Abstract: A liquid crystal panel, a scanning circuit and a method for generating angle waves are provided. A scanning circuit for generating angle waves includes a scanning module and a plurality of angle wave modules. The scanning module has a plurality of scan output ends for outputting scan driving signals respectively in order, wherein the scan driving signal includes a first voltage and a second voltage. The angle wave modules are electrically connected to the scan output ends respectively in order; wherein a second output end of each angle wave module is electrically connected a first output end of next one of the angle wave modules, whereby a part of electrical energy received by the second output end of the angle wave modules is transmitted to the first output end of the next one of the angle wave modules.
    Type: Application
    Filed: July 3, 2013
    Publication date: August 7, 2014
    Inventor: Chang Xin HUANG
  • Patent number: 8687029
    Abstract: The present invention discloses a method for reducing ripple noise on the image of a display. The steps of the method include: (a) providing a first potential signal to a backlight module by an inverter; (b) resetting the inverter; (c) providing a second potential signal to the backlight by the inverter, wherein the phase difference between the first potential signal and the second potential signal is 180 degrees; (d) resetting again the inverter; and (e) repeating the steps (a) to (d) Consequently, the ripple noise present on the display would be effectively reduced by the alteration of the bright areas and dark areas on the display panel in conjunction with the persistence of vision of the user's eyes.
    Type: Grant
    Filed: December 30, 2010
    Date of Patent: April 1, 2014
    Assignee: Chunghwa Picture Tubes, Ltd.
    Inventor: Chang-Xin Huang
  • Publication number: 20130169614
    Abstract: A gate driving circuit of a display panel is provided. A gate driving voltage is accurately adjusted by the gate driving circuit according to an environmental temperature, given that the characteristics of a thermistor and a hysteresis loop are taken into consideration. Accordingly, the power loss caused by switching states of a display panel can be reduced.
    Type: Application
    Filed: April 5, 2012
    Publication date: July 4, 2013
    Applicant: CHUNGHWA PICTURE TUBES, LTD.
    Inventor: Chang-Xin Huang
  • Publication number: 20120175156
    Abstract: A printed circuit board includes a substrate, a plurality of metal wires, and a solder mask layer. The substrate includes a first area and a second area. The second area surrounds and does not overlap the first area. The metal wires are disposed on the first area of the substrate. One end of one of two adjacent metal wires faces one end of the other one of the two adjacent metal wires. The solder mask layer is formed on the second area of the substrate. In the present invention, a short circuit or an open circuit between the two adjacent metal wires is directly formed during processes of manufacturing the printed circuit board, whereby a jumper is not required so as to reduce a layout area, and cost of a manual post-welding treatment can be reduced.
    Type: Application
    Filed: April 15, 2011
    Publication date: July 12, 2012
    Applicant: CHUNGHWA PICTURE TUBES, LTD.
    Inventor: CHANG-XIN HUANG
  • Publication number: 20120044282
    Abstract: The present invention discloses a method for reducing ripple noise on the image of a display. The steps of the method include: (a) providing a first potential signal to a backlight module by an inverter; (b) resetting the inverter; (c) providing a second potential signal to the backlight by the inverter, wherein the phase difference between the first potential signal and the second potential signal is 180 degrees; (d) resetting again the inverter; and (e) repeating the steps (a) to (d) Consequently, the ripple noise present on the display would be effectively reduced by the alteration of the bright areas and dark areas on the display panel in conjunction with the persistence of vision of the user's eyes.
    Type: Application
    Filed: December 30, 2010
    Publication date: February 23, 2012
    Applicant: CHUNGHWA PICTURE TUBES, LTD.
    Inventor: Chang-Xin HUANG
  • Patent number: 7768804
    Abstract: An inverter includes a counter, a PWM generator, a central controller and a power converter. The counter is used for receiving a frame switch signal to generate a frame counting signal. The PWM generator is coupled to the counter, and is used to select a specific frequency among a plurality of predetermined frequencies according to the frame counting signal, and generate a modulated signal having the specific frequency. The central controller is coupled to the PWM generator, and is used to generate a processed signal according to the modulated signal. The power converter is coupled to the central controller, and is used to generate an output signal according to the processed signal.
    Type: Grant
    Filed: December 25, 2008
    Date of Patent: August 3, 2010
    Assignee: Chunghwa Picture Tubes, Ltd.
    Inventor: Chang-Xin Huang
  • Publication number: 20100066660
    Abstract: A scanning backlight source driving apparatus and a liquid crystal display using the same are provided, wherein the scanning backlight source driving apparatus includes a DC/AC inverter, N transformers, N switches, and a control circuit, where N is a natural number. The DC/AC inverter has a first output terminal and a second output terminal configured to output an AC voltage. Each transformer has a primary winding. Each switch electrically connects the first output terminal to the second output terminal through a corresponding one of the primary windings. The control circuit is configured to control periodic and temporary turn-on or turn-off on the switches in a predetermined sequence.
    Type: Application
    Filed: November 3, 2008
    Publication date: March 18, 2010
    Applicant: Chunghwa Picture Tubes, LTD.
    Inventors: Chang-Xin Huang, Chao-Wei Wei, Shih-Hen Chao
  • Publication number: 20090316449
    Abstract: An inverter includes a counter, a PWM generator, a central controller and a power converter. The counter is used for receiving a frame switch signal to generate a frame counting signal. The PWM generator is coupled to the counter, and is used to select a specific frequency among a plurality of predetermined frequencies according to the frame counting signal, and generate a modulated signal having the specific frequency. The central controller is coupled to the PWM generator, and is used to generate a processed signal according to the modulated signal. The power converter is coupled to the central controller, and is used to generate an output signal according to the processed signal.
    Type: Application
    Filed: December 25, 2008
    Publication date: December 24, 2009
    Inventor: Chang-Xin Huang