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).
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Publication number: 20190025369Abstract: 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: ApplicationFiled: August 29, 2017Publication date: January 24, 2019Applicant: Chunghwa Picture Tubes, LTD.Inventors: Chang-Xin Huang, Chiao-Lin Huang
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Patent number: 9171515Abstract: 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: GrantFiled: July 3, 2013Date of Patent: October 27, 2015Assignee: CHUNGHWA PICTURE TUBES, LTD.Inventor: Chang Xin Huang
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Publication number: 20150169103Abstract: A touch display apparatus is provided. Touch scanning is executed through gate scan lines instead of being executed through touch scan lines.Type: ApplicationFiled: February 24, 2014Publication date: June 18, 2015Applicant: Chunghwa Picture Tubes, LTD.Inventor: Chang-Xin Huang
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Patent number: 9019257Abstract: 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: GrantFiled: April 5, 2012Date of Patent: April 28, 2015Assignee: Chunghwa Picture Tubes, Ltd.Inventor: Chang-Xin Huang
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Publication number: 20140218346Abstract: 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: ApplicationFiled: July 3, 2013Publication date: August 7, 2014Inventor: Chang Xin HUANG
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Patent number: 8687029Abstract: 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: GrantFiled: December 30, 2010Date of Patent: April 1, 2014Assignee: Chunghwa Picture Tubes, Ltd.Inventor: Chang-Xin Huang
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Publication number: 20130169614Abstract: 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: ApplicationFiled: April 5, 2012Publication date: July 4, 2013Applicant: CHUNGHWA PICTURE TUBES, LTD.Inventor: Chang-Xin Huang
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Publication number: 20120175156Abstract: 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: ApplicationFiled: April 15, 2011Publication date: July 12, 2012Applicant: CHUNGHWA PICTURE TUBES, LTD.Inventor: CHANG-XIN HUANG
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Publication number: 20120044282Abstract: 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: ApplicationFiled: December 30, 2010Publication date: February 23, 2012Applicant: CHUNGHWA PICTURE TUBES, LTD.Inventor: Chang-Xin HUANG
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Patent number: 7768804Abstract: 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: GrantFiled: December 25, 2008Date of Patent: August 3, 2010Assignee: Chunghwa Picture Tubes, Ltd.Inventor: Chang-Xin Huang
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Publication number: 20100066660Abstract: 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: ApplicationFiled: November 3, 2008Publication date: March 18, 2010Applicant: Chunghwa Picture Tubes, LTD.Inventors: Chang-Xin Huang, Chao-Wei Wei, Shih-Hen Chao
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Publication number: 20090316449Abstract: 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: ApplicationFiled: December 25, 2008Publication date: December 24, 2009Inventor: Chang-Xin Huang