Patents by Inventor Chih-Hung KUNG
Chih-Hung KUNG 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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Patent number: 9471186Abstract: A method for improving linearity of touch system coordinates first reads two-dimensional raw data of a capacitive touch panel. Next, it reads a pixel and adjacent pixels of the pixel from the two-dimension raw data. Then, it determines whether the value of the pixel is great than a pre-determined threshold. If the value of the pixel is not greater than the pre-determined threshold, it then determines whether there is a value of the adjacent pixels is greater than the pre-determined threshold. If there is no value of the adjacent pixels greater than the pre-determined threshold, it sets the value of the pixel to a pre-determined value. Otherwise, it reserves the value of the pixel in order to increase the linearity of two-dimensional raw data so as to avoid the interference of noise to the two-dimensional raw data.Type: GrantFiled: October 8, 2013Date of Patent: October 18, 2016Assignee: FOCALTECH SYSTEMS CO., LTD.Inventors: Hsin-Mao Huang, Chih-Hung Kung, Hsiang-Cheng Yu, Shih-Hsin Huang
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Patent number: 9280243Abstract: In a sensing method using self-capacitance and mutual-capacitance alternatively to reduce touch noises, a control device configures a first driving and sensing device and a second driving and sensing device to perform an initialization. The control device configures the first and second driving and sensing devices to perform at least one self-capacitance sensing for producing a first possible touch point range during a first work mode. Then, the control device configures the first and second driving and sensing devices to perform at least one mutual-capacitance sensing for producing a second possible touch point range during a second work mode. The control device determines if there is range conjunction between the first and second possible touch point ranges. The control device produces a possible touch point range conjunction and calculates coordinates of touch points based on the possible touch point range conjunction.Type: GrantFiled: January 23, 2014Date of Patent: March 8, 2016Assignee: FOCALTECH SYSTEMS CO., LTD.Inventors: Hsin-Mao Huang, Hsiang Cheng Yu, Chih-Hung Kung, Shih-Hsin Huang
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Patent number: 9195355Abstract: In a method for increasing accuracy of touch coordinate calculation in a capacitive multi-touch system, it performs operations on obtained data for de-noising of the obtained data and increasing its linearity so as to generate data with excellent stability and linearity. An integral accumulation operation is performed to generate data for each sensing channel, cancel the accumulation error in data, and calculate coordinates for touch points on a capacitive touch panel.Type: GrantFiled: June 18, 2013Date of Patent: November 24, 2015Assignee: FOCALTECH SYSTEMS CO., LTD.Inventors: Hsin-Hao Wang, Chih-Hung Kung, Yen-Lin Huang
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Patent number: 9170681Abstract: A noise reduction system includes a driving device, a sensing device, a first switch, a second switch, and a controller. The driving device has a plurality of drivers for generating touch driving signals. The sensing device has a plurality of sensors for detecting whether there is an external object approached and generating touch sensing signals. The first switch is provided for electrically connecting the plurality of drivers and the plurality of sensors to the capacitive touch panel. The second switch is provided for electrically connecting the plurality of drivers and the plurality of sensors to the capacitive touch panel. The controller configures the first switch and the second switch to perform a first direction driving and second direction sensing, and configuring the first switch and the second switch to perform a second direction driving and first direction sensing.Type: GrantFiled: October 30, 2013Date of Patent: October 27, 2015Assignee: FOCALTECH SYSTEMS CO., LTD.Inventors: Hsin-Mao Huang, Chih-Hung Kung, Hsin-Hao Wang
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Patent number: 8963881Abstract: A low power switching mode driving and sensing method for capacitive multi-touch systems is used in a capacitive multi-touch system with a capacitive touch panel. When the capacitive touch system operates in an idle mode, the method uses a self-capacitance driving and sensing technology to detect touch points. When the touch points are detected on the capacitive touch panel, the capacitive touch system is switched to an active mode and uses a mutual-capacitance driving and sensing technology to detect touch points for accurately acquiring the positions related to the touch points detected. During a predetermined time interval in which there is no touch point detected, the method automatically performs a calibration to update a mutual-capacitance base image raw data and a self-capacitance base image raw data, so as to overcome the drifting of sensors of the capacitive touch system.Type: GrantFiled: February 27, 2013Date of Patent: February 24, 2015Assignee: Orise Technology Co., Ltd.Inventors: Hsin-Mao Huang, Chih-Hung Kung, Yen-Lin Huang, Ying-Che Hsu
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Publication number: 20140204058Abstract: In a sensing method using self-capacitance and mutual-capacitance alternatively to reduce touch noises, a control device configures a first driving and sensing device and a second driving and sensing device to perform an initialization. The control device configures the first and second driving and sensing devices to perform at least one self-capacitance sensing for producing a first possible touch point range during a first work mode. Then, the control device configures the first and second driving and sensing devices to perform at least one mutual-capacitance sensing for producing a second possible touch point range during a second work mode. The control device determines if there is range conjunction between the first and second possible touch point ranges. The control device produces a possible touch point range conjunction and calculates coordinates of touch points based on the possible touch point range conjunction.Type: ApplicationFiled: January 23, 2014Publication date: July 24, 2014Applicant: Orise Technology Co., LtdInventors: Hsin-Mao HUANG, Hsiang Cheng YU, Chih-Hung KUNG, Shih-Hsin HUANG
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Publication number: 20140132556Abstract: A noise reduction system includes a driving device, a sensing device, a first switch, a second switch, and a controller. The driving device has a plurality of drivers for generating touch driving signals. The sensing device has a plurality of sensors for detecting whether there is an external object approached and generating touch sensing signals. The first switch is provided for electrically connecting the plurality of drivers and the plurality of sensors to the capacitive touch panel. The second switch is provided for electrically connecting the plurality of drivers and the plurality of sensors to the capacitive touch panel. The controller configures the first switch and the second switch to perform a first direction driving and second direction sensing, and configuring the first switch and the second switch to perform a second direction driving and first direction sensing.Type: ApplicationFiled: October 30, 2013Publication date: May 15, 2014Applicant: ORISE TECHNOLOGY CO., LTD.Inventors: Hsin-Mao HUANG, Chih-Hung KUNG, Hsin-Hao WANG
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Publication number: 20140118297Abstract: A method for improving linearity of touch system coordinates first reads two-dimensional raw data of a capacitive touch panel. Next, it reads a pixel and adjacent pixels of the pixel from the two-dimension raw data. Then, it determines whether the value of the pixel is great than a pre-determined threshold. If the value of the pixel is not greater than the pre-determined threshold, it then determines whether there is a value of the adjacent pixels is greater than the pre-determined threshold. If there is no value of the adjacent pixels greater than the pre-determined threshold, it sets the value of the pixel to a pre-determined value. Otherwise, it reserves the value of the pixel in order to increase the linearity of two-dimensional raw data so as to avoid the interference of noise to the two-dimensional raw data.Type: ApplicationFiled: October 8, 2013Publication date: May 1, 2014Applicant: ORISE TECHNOLOGY CO., LTD.Inventors: Hsin-Mao HUANG, Chih-Hung KUNG, Hsiang-Cheng YU, Shih-Hsin HUANG
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Publication number: 20130342502Abstract: In a method for increasing accuracy of touch coordinate calculation in a capacitive multi-touch system, it performs operations on obtained data for de-noising of the obtained data and increasing its linearity so as to generate data with excellent stability and linearity. An integral accumulation operation is performed to generate data for each sensing channel, cancel the accumulation error in data, and calculate coordinates for touch points on a capacitive touch panel.Type: ApplicationFiled: June 18, 2013Publication date: December 26, 2013Inventors: Hsin-Hao WANG, Chih-Hung KUNG, Yen-Lin HUANG
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Publication number: 20130229382Abstract: A low power switching mode driving and sensing method for capacitive multi-touch systems is used in a capacitive multi-touch system with a capacitive touch panel. When the capacitive touch system operates in an idle mode, the method uses a self-capacitance driving and sensing technology to detect touch points. When the touch points are detected on the capacitive touch panel, the capacitive touch system is switched to an active mode and uses a mutual-capacitance driving and sensing technology to detect touch points for accurately acquiring the positions related to the touch points detected. During a predetermined time interval in which there is no touch point detected, the method automatically performs a calibration to update a mutual-capacitance base image raw data and a self-capacitance base image raw data, so as to overcome the drifting of sensors of the capacitive touch system.Type: ApplicationFiled: February 27, 2013Publication date: September 5, 2013Applicant: ORISE TECHNOLOGY CO., LTD.Inventors: Hsin-Mao HUANG, Chih-Hung KUNG, Yen-Lin HUANG, Ying-Che HSU