Patents by Inventor Chao-Cheng Wen
Chao-Cheng Wen 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: 9965090Abstract: A process determines touch orientation of touches on a sense array of a touch-sensing device. The process obtains first touch data and second touch data of a conductive object proximate to the sense array at two temporally proximate times. The first and second touch data are then used to determine a first touch orientation, and the second touch data is used to determine a touch area and a provisional touch orientation. A touch orientation change is then determined as an absolute difference between the first touch orientation and the provisional touch orientation. The touch orientation change is compared with a threshold change, and the touch area is compared with a threshold area. In accordance with comparison results, the first touch orientation, the provisional orientation, or a weighted combination of them is designated as a second touch orientation corresponding to one of the two temporally proximate times.Type: GrantFiled: March 25, 2016Date of Patent: May 8, 2018Assignee: PARADE TECHNOLOGIES, LTD.Inventors: David P. Funston, Chao-Cheng Wen
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Patent number: 9760210Abstract: A method for coordinate correction of touch control is provided. An original x-coordinate and an original y-coordinate are corrected according to a total sensing value, the original x-coordinate and the original y-coordinate provided by touch sensing of a touch panel. The method includes providing an estimated x-axis correction value according to the original x-coordinate and the total sensing value, generating a corrected x-coordinate according to the estimated x-axis correction value and the original x-coordinate, and providing a corrected y-coordinate according to the original x-coordinate, the corrected x-coordinate and the total sensing value.Type: GrantFiled: October 30, 2013Date of Patent: September 12, 2017Assignee: MStar Semiconductor, Inc.Inventors: Chao-Cheng Wen, Guo-Kiang Hung
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Patent number: 9459742Abstract: A method for designing a pattern of sensing channels is provided. The method is applied to a touch panel including a plurality of electrodes and a plurality of sections of sensing channels. The electrodes are connected to a plurality of sensors for the touch panel via the sections of sensing channels. According to a minimum sensing channel width, a minimum sensing channel gap, a maximum distribution width and lengths of the sections of sensing channels, a set of rules are established. According to the set of rules, a programming process is utilized to determine respective widths of the sections of sensing channels.Type: GrantFiled: July 25, 2014Date of Patent: October 4, 2016Assignee: MStar Semiconductor, Inc.Inventors: Wei-Lun Kuo, Chao-Cheng Wen, Meng-Che Tsai
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Publication number: 20160209980Abstract: A process determines touch orientation of touches on a sense array of a touch-sensing device. The process obtains first touch data and second touch data of a conductive object proximate to the sense array at two temporally proximate times. The first and second touch data are then used to determine a first touch orientation, and the second touch data is used to determine a touch area and a provisional touch orientation. A touch orientation change is then determined as an absolute difference between the first touch orientation and the provisional touch orientation. The touch orientation change is compared with a threshold change, and the touch area is compared with a threshold area. In accordance with comparison results, the first touch orientation, the provisional orientation, or a weighted combination of them is designated as a second touch orientation corresponding to one of the two temporally proximate times.Type: ApplicationFiled: March 25, 2016Publication date: July 21, 2016Inventors: David P. Funston, Chao-Cheng Wen
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Patent number: 9317167Abstract: 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: GrantFiled: May 15, 2014Date of Patent: April 19, 2016Assignee: MSTAR SEMICONDUCTOR, INC.Inventors: Chao-Ting Cheng, Meng-Che Tsai, Chao-Cheng Wen
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Patent number: 9280232Abstract: A method for touch detection is provided for detecting a touch point on a display device. The method includes: providing a display signal, according to which the display device has two parts of a vertical blanking interval within each frame period, wherein the two parts of the vertical blanking interval are discontinuous; and performing a touch detection in the two parts of the vertical blanking interval, respectively. The touch detection method is capable of performing multiple touch detections within one frame period.Type: GrantFiled: February 7, 2014Date of Patent: March 8, 2016Assignee: MStar Semiconductor, Inc.Inventors: Guo-Kiang Hung, Hsuan-I Pan, Chao-Cheng Wen, Hsien-Keng Lin, Kuo-Chao Liao
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Patent number: 9164628Abstract: A signal processing method for a touch panel is provided. The touch panel includes several capacitor electrodes. The method includes the following steps. Detection values are provided according to self-capacitance changes of the capacitor electrodes. The detection values are then low-pass filtered by a filter structure to generate several filtered values. A position where a touch event occurs on the touch panel is determined according to the filtered values.Type: GrantFiled: July 10, 2012Date of Patent: October 20, 2015Assignee: MStar Semiconductor, Inc.Inventor: Chao-Cheng Wen
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Patent number: 9128603Abstract: A hand gesture recognition method according to the present disclosure is applied to a touch panel comprising a plurality of sensors, each of which generating a sensing value according to a touch operation. The method includes providing a first reference value and a second reference value; generating a count value by counting a quantity of the sensing values that are greater than a threshold; determining the touch operation as a first hand gesture when the count value is greater than the first reference value but smaller than the second reference value; and determining the touch operation as a second hand gesture when the count value is greater than the second reference value.Type: GrantFiled: March 21, 2011Date of Patent: September 8, 2015Assignee: MStar Semiconductor, Inc.Inventors: Chao-Cheng Wen, Tsung-Fu Lin
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Patent number: 8994697Abstract: A method for determining a displacement of a touch point is applied to a touch panel to reduce noise interfering with determination of the displacement. The method includes obtaining a displacement according to a movement of a touch point on the touch panel; checking whether the displacement is within a predetermined range; and determining that the movement is valid when the displacement is within the predetermined range.Type: GrantFiled: July 27, 2010Date of Patent: March 31, 2015Assignee: MStar Semiconductor, Inc.Inventors: Tsung-Fu Lin, Chao-Cheng Wen
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Publication number: 20150029147Abstract: A method for designing a pattern of sensing channels is provided. The method is applied to a touch panel including a plurality of electrodes and a plurality of sections of sensing channels. The electrodes are connected to a plurality of sensors for the touch panel via the sections of sensing channels. According to a minimum sensing channel width, a minimum sensing channel gap, a maximum distribution width and lengths of the sections of sensing channels, a set of rules are established. According to the set of rules, a programming process is utilized to determine respective widths of the sections of sensing channels.Type: ApplicationFiled: July 25, 2014Publication date: January 29, 2015Inventors: Wei-Lun Kuo, Chao-Cheng Wen, Meng-Che Tsai
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Publication number: 20140340355Abstract: 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: ApplicationFiled: May 15, 2014Publication date: November 20, 2014Applicant: MStar Semiconductor, Inc.Inventors: Chao-Ting Cheng, Meng-Che Tsai, Chao-Cheng Wen
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Publication number: 20140218323Abstract: A method for touch detection is provided for detecting a touch point on a display device. The method includes: providing a display signal, according to which the display device has two parts of a vertical blanking interval within each frame period, wherein the two parts of the vertical blanking interval are discontinuous; and performing a touch detection in the two parts of the vertical blanking interval, respectively. The touch detection method is capable of performing multiple touch detections within one frame period.Type: ApplicationFiled: February 7, 2014Publication date: August 7, 2014Applicant: MStar Semiconductor, Inc.Inventors: Guo-Kiang Hung, Hsuan-I Pan, Chao-Cheng Wen, Hsien-Keng Lin, Kuo-Chao Liao
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Publication number: 20140118282Abstract: A method for coordinate correction of touch control is provided. An original x-coordinate and an original y-coordinate are corrected according to a total sensing value, the original x-coordinate and the original y-coordinate provided by touch sensing of a touch panel. The method includes providing an estimated x-axis correction value according to the original x-coordinate and the total sensing value, generating a corrected x-coordinate according to the estimated x-axis correction value and the original x-coordinate, and providing a corrected y-coordinate according to the original x-coordinate, the corrected x-coordinate and the total sensing value.Type: ApplicationFiled: October 30, 2013Publication date: May 1, 2014Applicant: MStar Semiconductor, Inc.Inventors: Chao-Cheng Wen, Guo-Kiang Hung
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Publication number: 20130162588Abstract: A signal processing method for a touch panel is provided. The touch panel includes several capacitor electrodes. The method includes the following steps. Detection values are provided according to self-capacitance changes of the capacitor electrodes. The detection values are then low-pass filtered by a filter structure to generate several filtered values. A position where a touch event occurs on the touch panel is determined according to the filtered values.Type: ApplicationFiled: July 10, 2012Publication date: June 27, 2013Applicant: MSTAR SEMICONDUCTOR, INC.Inventor: Chao-Cheng Wen
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Publication number: 20110242022Abstract: A determining method of touch gesture on a touch panel is provided to avoid misjudgment of determination of a multi-finger touch as a single-finger touch. The method includes determining whether a first valid touch is present on the touch panel; determining whether a second valid touch is present on the touch panel within a predetermined time period when the first valid touch is continuously present within the predetermined time period; generating a first hand gesture instruction when the second valid touch is not detected during the predetermined time period; and generating a second hand gesture instruction when the second valid touch is detected within the predetermined time period.Type: ApplicationFiled: December 30, 2010Publication date: October 6, 2011Applicant: MSTAR SEMICONDUCTOR, INC.Inventor: Chao-Cheng Wen
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Publication number: 20110242025Abstract: A hand gesture recognition method according to the present disclosure is applied to a touch panel comprising a plurality of sensors, each of which generating a sensing value according to a touch operation. The method includes providing a first reference value and a second reference value; generating a count value by counting a quantity of the sensing values that are greater than a threshold; determining the touch operation as a first hand gesture when the count value is greater than the first reference value but smaller than the second reference value; and determining the touch operation as a second hand gesture when the count value is greater than the second reference value.Type: ApplicationFiled: March 21, 2011Publication date: October 6, 2011Applicant: MSTAR SEMICONDUCTOR, INC.Inventors: Chao-Cheng Wen, Tsung-Fu Lin
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Publication number: 20110025628Abstract: A method for determining a displacement of a touch point is applied to a touch panel to reduce noise interfering with determination of the displacement. The method includes obtaining a displacement according to a movement of a touch point on the touch panel; checking whether the displacement is within a predetermined range; and determining that the movement is valid when the displacement is within the predetermined range.Type: ApplicationFiled: July 27, 2010Publication date: February 3, 2011Applicant: MSTAR SEMICONDUCTOR, INC.Inventors: Tsung-Fu Lin, Chao-Cheng Wen