Patents by Inventor Jui-Min Liu
Jui-Min Liu 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: 20240402852Abstract: A position detection circuit for detecting, by using a touch sensor, a position indicated by a passive pointer to a touch surface disposed on the touch sensor. The position detection circuit includes a detection circuit that detects a touch of the passive pointer to the touch surface, a calculation circuit that calculates a total value of capacitance values in a calculation region surrounding at least part of a touch region indicating a region of the touch, and an output circuit that outputs an indicated position that is indicated by the touch, based on the total value of the capacitance values. The output circuit outputs the indicated position when the total value is equal to or less than a threshold value, and does not output the indicated position or invalidates the indicated position and outputs the indicated position that has been invalidated, when the total value exceeds the threshold value.Type: ApplicationFiled: August 15, 2024Publication date: December 5, 2024Inventors: Masafumi UTSUGI, Jui Min LIU
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Patent number: 12093487Abstract: A position detection circuit for detecting, by using a touch sensor, a position indicated by a passive pointer to a touch surface disposed on the touch sensor. The position detection circuit includes a detection circuit that detects a touch of the passive pointer to the touch surface, a calculation circuit that calculates a total value of capacitance values in a calculation region surrounding at least part of a touch region indicating a region of the touch, and an output circuit that outputs an indicated position that is indicated by the touch, based on the total value of the capacitance values. The output circuit outputs the indicated position when the total value is equal to or less than a threshold value, and does not output the indicated position or invalidates the indicated position and outputs the indicated position that has been invalidated, when the total value exceeds the threshold value.Type: GrantFiled: March 7, 2023Date of Patent: September 17, 2024Assignee: Wacom Co., Ltd.Inventors: Masafumi Utsugi, Jui Min Liu
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Publication number: 20240302920Abstract: A touch detecting method includes determining a kind of a detected indicator based on a first area on a touch surface, obtaining a plurality of second capacitances formed by emphasizing a peak in comparison with a plurality of first capacitances by processing the plurality of first capacitances by a first filter in a case where the determining determines that the detected indicator is a stylus, deriving coordinates indicating a position of the stylus on the touch surface based on a second area on the touch surface, and deriving coordinates indicating a position of a finger on the touch surface based on a third area on the touch surface.Type: ApplicationFiled: May 3, 2024Publication date: September 12, 2024Inventors: Jui Min LIU, Shigeyuki SANO, Yuhi HATANO
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Patent number: 12019826Abstract: A touch detecting method includes determining a kind of a detected indicator based on a first area on a touch surface, obtaining a plurality of second capacitances formed by emphasizing a peak in comparison with a plurality of first capacitances by processing the plurality of first capacitances by a first filter in a case where the determining determines that the detected indicator is a stylus, deriving coordinates indicating a position of the stylus on the touch surface based on a second area on the touch surface, and deriving coordinates indicating a position of a finger on the touch surface based on a third area on the touch surface.Type: GrantFiled: March 14, 2022Date of Patent: June 25, 2024Assignee: Wacom Co., Ltd.Inventors: Jui Min Liu, Shigeyuki Sano, Yuhi Hatano
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Publication number: 20230333693Abstract: A position detection circuit for detecting, by using a touch sensor, a position indicated by a passive pointer to a touch surface disposed on the touch sensor. The position detection circuit includes a detection circuit that detects a touch of the passive pointer to the touch surface, a calculation circuit that calculates a total value of capacitance values in a calculation region surrounding at least part of a touch region indicating a region of the touch, and an output circuit that outputs an indicated position that is indicated by the touch, based on the total value of the capacitance values. The output circuit outputs the indicated position when the total value is equal to or less than a threshold value, and does not output the indicated position or invalidates the indicated position and outputs the indicated position that has been invalidated, when the total value exceeds the threshold value.Type: ApplicationFiled: March 7, 2023Publication date: October 19, 2023Inventors: Masafumi UTSUGI, Jui Min LIU
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Patent number: 11644912Abstract: An interface device includes an on-panel pad and a sensor controller. The interface device is used to perform an input to an electronic device in response to an operation by a user on a capacitive touch panel display of the electronic device. The on-panel pad causes sensor electrodes included in the touch panel display to generate a two-dimensional pattern of capacitance while the on-panel pad is on the touch panel display. When the two-dimensional pattern generated while the on-panel pad is on the touch panel display has been detected, the sensor controller generates or outputs data including operation information in response to a change in capacitance in a region that is associated with the two-dimensional pattern and that receives an operation of the on-panel pad, the operation information indicating an operation state of the on-panel pad.Type: GrantFiled: February 3, 2021Date of Patent: May 9, 2023Assignee: Wacom Co. Ltd.Inventors: Thilo Naoki Hornung, Jui Min Liu, Yoshio Nomura, Kazuhiro Miyoshi, Shigeyuki Sano
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Patent number: 11415457Abstract: The present invention provides a vibration sensor, which comprises a circuit board having an accommodating space. A sensing assembly is disposed in the accommodating space. A recess for magnet sliding is disposed in the sensing assembly. Dispose a magnet in the recess and then dispose a coil layer on an arbitrary side or both sides of the sensing assembly. Furthermore, a lubricating layer is coated on the recess. Alternatively, the recess can be a vacuum structure or a hollow cross-sectional structure for reducing the friction between the recess and the magnet. Alternatively, the coil layer can be coated with a protective layer or multiple layers can be stacked. Without increasing the area of the sensor, the sensing on the variation of magnetic flux can be improved. Accordingly, the vibration sensor according to the present invention can achieve wideband detection of vibrations.Type: GrantFiled: October 25, 2018Date of Patent: August 16, 2022Assignee: National Applied Research LaboratoriesInventors: Yu-Sheng Lai, Jui-Min Liu, Hsu-Chun Cheng, Mei-I Li, Chun-Chi Chen, Cheng-San Wu, Jia-Min Shieh
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Publication number: 20220197503Abstract: A touch detecting method includes determining a kind of a detected indicator based on a first area on a touch surface, obtaining a plurality of second capacitances formed by emphasizing a peak in comparison with a plurality of first capacitances by processing the plurality of first capacitances by a first filter in a case where the determining determines that the detected indicator is a stylus, deriving coordinates indicating a position of the stylus on the touch surface based on a second area on the touch surface, and deriving coordinates indicating a position of a finger on the touch surface based on a third area on the touch surface.Type: ApplicationFiled: March 14, 2022Publication date: June 23, 2022Inventors: Jui Min LIU, Shigeyuki SANO, Yuhi HATANO
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Patent number: 11287927Abstract: A coordinate detection method includes detecting coordinates corresponding to a position of a pen tip electrode of a pen by detecting distribution of signal levels in a plane of a touch surface through use of a plurality of linear electrodes disposed in the plane of the touch surface; detecting tilt data indicating a tilt of the pen; and acquiring a correction amount corresponding to a combination of the coordinates and the tilt data by referencing a correction table defining a correspondence between correction amounts and combinations of coordinates and tilt data.Type: GrantFiled: February 11, 2021Date of Patent: March 29, 2022Assignee: Wacom Co., Ltd.Inventors: Chin-Chuan Chou, Chengliang Hsieh, Shigeyuki Sano, Jui Min Liu
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Publication number: 20210165522Abstract: A coordinate detection method includes detecting coordinates corresponding to a position of a pen tip electrode of a pen by detecting distribution of signal levels in a plane of a touch surface through use of a plurality of linear electrodes disposed in the plane of the touch surface; detecting tilt data indicating a tilt of the pen; and acquiring a correction amount corresponding to a combination of the coordinates and the tilt data by referencing a correction table defining a correspondence between correction amounts and combinations of coordinates and tilt data.Type: ApplicationFiled: February 11, 2021Publication date: June 3, 2021Inventors: Chin-Chuan Chou, Chengliang Hsieh, Shigeyuki Sano, Jui Min Liu
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Publication number: 20210157419Abstract: An interface device includes an on-panel pad and a sensor controller. The interface device is used to perform an input to an electronic device in response to an operation by a user on a capacitive touch panel display of the electronic device. The on-panel pad causes sensor electrodes included in the touch panel display to generate a two-dimensional pattern of capacitance while the on-panel pad is on the touch panel display. When the two-dimensional pattern generated while the on-panel pad is on the touch panel display has been detected, the sensor controller generates or outputs data including operation information in response to a change in capacitance in a region that is associated with the two-dimensional pattern and that receives an operation of the on-panel pad, the operation information indicating an operation state of the on-panel pad.Type: ApplicationFiled: February 3, 2021Publication date: May 27, 2021Inventors: Thilo Naoki Hornung, Jui Min Liu, Yoshio Nomura, Kazuhiro Miyoshi, Shigeyuki Sano
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Publication number: 20190360859Abstract: The present invention provides a vibration sensor, which comprises a circuit board having an accommodating space. A sensing assembly is disposed in the accommodating space. A recess for magnet sliding is disposed in the sensing assembly. Dispose a magnet in the recess and then dispose a coil layer on an arbitrary side or both sides of the sensing assembly. Furthermore, a lubricating layer is coated on the recess. Alternatively, the recess can be a vacuum structure or a hollow cross-sectional structure for reducing the friction between the recess and the magnet. Alternatively, the coil layer can be coated with a protective layer or multiple layers can be stacked. Without increasing the area of the sensor, the sensing on the variation of magnetic flux can be improved. Accordingly, the vibration sensor according to the present invention can achieve wideband detection of vibrations.Type: ApplicationFiled: October 25, 2018Publication date: November 28, 2019Inventors: YU-SHENG LAI, JUI-MIN LIU, HSU-CHUN CHENG, MEI-I LI, CHUN-CHI CHEN, CHENG-SAN WU, JIA-MIN SHIEH
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Patent number: 9766728Abstract: An exemplary method for determining a position of a touch event on a touch panel includes at least the following steps: scanning the touch panel by utilizing a first touch event detection threshold, and accordingly obtaining touch signal information corresponding to the touch event on the touch panel; determining if the touch panel is in a specific touch mode according to the touch signal information; and when it is determined that the touch panel is in the specific touch mode, setting a second touch event detection threshold that is different from the first touch event detection threshold, and scanning the touch panel by utilizing the second touch event detection threshold to obtain the position of the touch event.Type: GrantFiled: February 19, 2013Date of Patent: September 19, 2017Assignee: HIMAX TECHNOLOGIES LIMITEDInventors: Chin-Lin Lee, Shen-Feng Tai, Jui-Min Liu, Cheng-Feng Hsieh
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Patent number: 9582109Abstract: A method for detecting noise of a touch panel and performing signal control is provided, where the method may determine how many cycles of frame data are influenced by noise, may determine whether the frame data is influenced by noise by determining whether a number of cycles influenced by noise is greater than a first threshold value or not, and may determine whether a number of continuous frame data determined to be influenced by noise is greater than a second threshold value to generate a determination result. Finally, the method may determine whether to adjust a frequency of the transmitting signals according to the determination result.Type: GrantFiled: September 30, 2013Date of Patent: February 28, 2017Assignee: HIMAX TECHNOLOGIES LIMITEDInventors: Li-Lin Liu, Chung-Wen Chang, Shen-Feng Tai, Jui-Min Liu
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Patent number: 9244579Abstract: A touch display apparatus and a touch mode switching method thereof are provided. A touch mode of a touch panel is switched according to a touch track and a touch area of an input tool.Type: GrantFiled: December 18, 2013Date of Patent: January 26, 2016Assignee: HIMAX TECHNOLOGIES LIMITEDInventors: Li-Lin Liu, Shen-Feng Tai, Chung-Wen Chang, Jui-Min Liu
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Patent number: 9075465Abstract: An exemplary method of identifying a touch event on a touch panel is provided. The touch panel includes a plurality of sensing blocks. The sensing blocks have a plurality of corresponding sensing values generated in response to the touch event. The exemplary method includes the following steps: selecting a processing region on the touch panel, wherein the processing region comprises at least a portion of sensing blocks each having a sensing value greater than a threshold; deriving a first value and a second value from sensing values of sensing blocks included in the processing region; calculating a ratio of the first value to the second value; and identifying the touch event according to at least the ratio.Type: GrantFiled: February 19, 2013Date of Patent: July 7, 2015Assignee: HIMAX TECHNOLOGIES LIMITEDInventors: Chin-Lin Lee, Shen-Feng Tai, Jui-Min Liu, Chun-Yen Liu
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Publication number: 20150169102Abstract: A touch display apparatus and a touch mode switching method thereof are provided. A touch mode of a touch panel is switched according to a touch track and a touch area of an input tool.Type: ApplicationFiled: December 18, 2013Publication date: June 18, 2015Applicant: HIMAX TECHNOLOGIES LIMITEDInventors: Li-Lin Liu, Shen-Feng Tai, Chung-Wen Chang, Jui-Min Liu
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Publication number: 20150091814Abstract: A method for detecting noise of a touch panel and performing signal control is provided, where the method may determine how many cycles of frame data are influenced by noise, may determine whether the frame data is influenced by noise by determining whether a number of cycles influenced by noise is greater than a first threshold value or not, and may determine whether a number of continuous frame data determined to be influenced by noise is greater than a second threshold value to generate a determination result. Finally, the method may determine whether to adjust a frequency of the transmitting signals according to the determination result.Type: ApplicationFiled: September 30, 2013Publication date: April 2, 2015Applicant: HIMAX TECHNOLOGIES LIMITEDInventors: Li-Lin Liu, Chung-Wen Chang, Shen-Feng Tai, Jui-Min Liu
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Publication number: 20150062058Abstract: A touch panel capable of detecting a stylus is disclosed. At least one self scan cycle and at least one mutual scan cycle are performed in each scan frame, and touch identification of the stylus is affirmed when both touch identifications via the self scan cycle and the mutual scan cycle are detected.Type: ApplicationFiled: September 3, 2013Publication date: March 5, 2015Applicant: Himax Technologies LimitedInventors: Chung-Wen Chang, Shen-Feng Tai, Jui-Min Liu, Chun-Kai Chuang
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Publication number: 20150042596Abstract: A touch panel capable of performing proximity function is disclosed. A voltage is applied to column electrode or row electrode during a self scan cycle, and a capacitive object close to a surface of the touch panel is measured on the same column electrode or row electrode. A voltage is applied to one axis during a mutual scan cycle, and a capacitive object close to the surface of the touch panel is measured on the other axis.Type: ApplicationFiled: August 8, 2013Publication date: February 12, 2015Applicant: HIMAX TECHNOLOGIES LIMITEDInventors: Chung-Wen Chang, Shen-Feng Tai, Jui-Min Liu, Li-Lin Liu