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公开(公告)号：US20230194369A1
公开(公告)日：2023-06-22
申请号：US17557002
申请日：2021-12-20
Applicant: PixArt Imaging Inc.
Inventor： Ming-Hung Tsai , Chun-Yang Chen , Yen-Po Chen
Abstract: A force sensing method, applied to a force sensing system comprising a plurality of force sensors and a touch sensing surface, comprising: (a) determining a first location of a first object on the touch sensing surface; (b) defining a first force sensing region according to the first location; and (c) computing a first system sensing force which the first object causes to the touch sensing surface according to the first location, and according to at least one sensor sensing force of a first part of the force sensors corresponding to the first force sensing region. The present invention also discloses a force sensing system which uses the above-mentioned force sensing method, and an efficient force sensor calibration method. Noises can be reduced and power consumption can be decreased, since only sensor sensing forces of force sensors near the object are used for computing the system sensing force.
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公开(公告)号：US10430005B2
公开(公告)日：2019-10-01
申请号：US15893114
申请日：2018-02-09
Applicant: PixArt Imaging Inc.
Inventor： Sung-Han Wu , Yu-Han Chen , Ming-Hung Tsai , Meng-Lin Yu , Hsin-Chia Chen
Abstract: There is provided a capacitive touch device including a touch panel, a detection circuit and a processing unit. The touch panel includes a plurality of drive electrodes and a plurality of receiving electrodes configured to form a coupling electric field with an external touch panel, and the receiving electrodes are respectively configured to output a detection signal. The detection circuit is coupled to one of the receiving electrodes and configured to modulate the detection signal with two signals to generate two detection components. The processing unit is configured to obtain a phase value according to the two detection components to accordingly decode transmission data.
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公开(公告)号：US20220179450A1
公开(公告)日：2022-06-09
申请号：US17680243
申请日：2022-02-24
Applicant: PixArt Imaging Inc.
Inventor： Ming-Hung Tsai , Tse-Chung Su , Ren-Hau Gu , Tzung-Min Su
Abstract: An electronic device with a function of detecting a touch state, comprising: at least one first electrode, configured to generate a first capacitance reflecting a distance between the first electrode and an object; at least one second electrode, configured to generate a second capacitance reflecting a distance between the second electrode and the object, and wherein a first distance between the first electrode and the object is smaller than a second distance between the second electrode and the object when the electronic is in a wearing state; a capacitance calculating circuit, configured to calculate the first capacitance and the second capacitance; and a processing circuit, configured to determine if the electronic device is in the wearing state based on a capacitance difference between the first capacitance and the second capacitance. Via such structure, the touch state of the electronic device can be precisely acquired.
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公开(公告)号：US09952732B2
公开(公告)日：2018-04-24
申请号：US15176687
申请日：2016-06-08
Applicant: PixArt Imaging Inc.
Inventor： Sung-Han Wu , Yu-Han Chen , Ming-Hung Tsai , Meng-Lin Yu , Hsin-Chia Chen
CPC classification number: G06F3/044 , G06F3/0418
Abstract: There is provided a capacitive touch device including a touch panel, a detection circuit and a processing unit. The touch panel includes a plurality of drive electrodes and a plurality of receiving electrodes configured to form a coupling electric field with an external touch panel, and the receiving electrodes are respectively configured to output a detection signal. The detection circuit is coupled to one of the receiving electrodes and configured to modulate the detection signal with two signals to generate two detection components. The processing unit is configured to obtain a phase value according to the two detection components to accordingly decode transmission data.
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公开(公告)号：US11294428B2
公开(公告)日：2022-04-05
申请号：US17233523
申请日：2021-04-18
Applicant: PixArt Imaging Inc.
Inventor： Ming-Hung Tsai , Tse-Chung Su , Ren-Hau Gu , Tzung-Min Su
Abstract: An electronic device which can detect a touch state, comprising: a front surface for showing images; at least one first electrode, provided in a first region; at least one second electrode, provided in a second region, wherein a distance between the first region and the front surface is larger than a distance between the second region and the front surface; a capacitance calculating circuit, configured to calculate at least one first capacitance generated by the first electrode and coupled to the second electrode to calculate at least one second capacitance generated by the second electrode, wherein the capacitance calculating circuit further calculates a capacitance difference between the first capacitance and the second capacitance; and a processing circuit, configured to determine the touch state according to the capacitance difference. Via such structure, the touch state of the electronic device can be precisely acquired.
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Patent Agency Ranking
公开(公告)号：US20210240220A1
公开(公告)日：2021-08-05
申请号：US17233523
申请日：2021-04-18
Applicant: PixArt Imaging Inc.
Inventor： Ming-Hung Tsai , Tse-Chung Su , Ren-Hau Gu , Tzung-Min Su
Abstract: An electronic device which can detect a touch state, comprising: a front surface for showing images; at least one first electrode, provided in a first region; at least one second electrode, provided in a second region, wherein a distance between the first region and the front surface is larger than a distance between the second region and the front surface; a capacitance calculating circuit, configured to calculate at least one first capacitance generated by the first electrode and coupled to the second electrode to calculate at least one second capacitance generated by the second electrode, wherein the capacitance calculating circuit further calculates a capacitance difference between the first capacitance and the second capacitance; and a processing circuit, configured to determine the touch state according to the capacitance difference. Via such structure, the touch state of the electronic device can be precisely acquired.
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公开(公告)号：US10534476B2
公开(公告)日：2020-01-14
申请号：US15718023
申请日：2017-09-28
Applicant: PIXART IMAGING INC.
Inventor： Sung-Han Wu , Ming-Hung Tsai , Che-Chia Hsu
Abstract: A compensation method for an induced amount in a touch sensor and a touch panel thereof are provided. The compensation method uses a fake finger circuit to simulate the situations when a user touches the sensing nodes of the touch sensor with a finger, and obtains the gain coefficient of each of the sensing nodes, which are used to compensate for the induced capacitance generated by the sensing nodes as a result of being touched by an external object. In this way, the extra effects caused by the difference in basic capacitance can be eliminated by the gain coefficient.
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公开(公告)号：US11976990B2
公开(公告)日：2024-05-07
申请号：US17557002
申请日：2021-12-20
Applicant: PixArt Imaging Inc.
Inventor： Ming-Hung Tsai , Chun-Yang Chen , Yen-Po Chen
CPC classification number: G01L1/26 , G01L25/00 , G06F3/0414 , G06F3/0418
Abstract: A force sensing method, applied to a force sensing system comprising a plurality of force sensors and a touch sensing surface, comprising: (a) determining a first location of a first object on the touch sensing surface; (b) defining a first force sensing region according to the first location; and (c) computing a first system sensing force which the first object causes to the touch sensing surface according to the first location, and according to at least one sensor sensing force of a first part of the force sensors corresponding to the first force sensing region. The present invention also discloses a force sensing system which uses the above-mentioned force sensing method, and an efficient force sensor calibration method. Noises can be reduced and power consumption can be decreased, since only sensor sensing forces of force sensors near the object are used for computing the system sensing force.
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公开(公告)号：US11526195B2
公开(公告)日：2022-12-13
申请号：US17680243
申请日：2022-02-24
Applicant: PixArt Imaging Inc.
Inventor： Ming-Hung Tsai , Tse-Chung Su , Ren-Hau Gu , Tzung-Min Su
Abstract: An electronic device with a function of detecting a touch state, comprising: at least one first electrode, configured to generate a first capacitance reflecting a distance between the first electrode and an object; at least one second electrode, configured to generate a second capacitance reflecting a distance between the second electrode and the object, and wherein a first distance between the first electrode and the object is smaller than a second distance between the second electrode and the object when the electronic is in a wearing state; a capacitance calculating circuit, configured to calculate the first capacitance and the second capacitance; and a processing circuit, configured to determine if the electronic device is in the wearing state based on a capacitance difference between the first capacitance and the second capacitance. Via such structure, the touch state of the electronic device can be precisely acquired.
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公开(公告)号：US20240230435A1
公开(公告)日：2024-07-11
申请号：US18616202
申请日：2024-03-26
Applicant: PixArt Imaging Inc.
Inventor： Ming-Hung Tsai , Chun-Yang Chen , Yen-Po Chen
CPC classification number: G01L1/26 , G01L25/00 , G06F3/0414 , G06F3/0418
Abstract: A force sensing method, applied to a force sensing system comprising a plurality of force sensors and a touch sensing surface, comprising: (a) determining a first location of a first object on the touch sensing surface; (b) defining a first force sensing region according to the first location; and (c) computing a first system sensing force which the first object causes to the touch sensing surface according to the first location, and according to at least one sensor sensing force of a first part of the force sensors corresponding to the first force sensing region. The present invention also discloses a force sensing system which uses the above-mentioned force sensing method, and an efficient force sensor calibration method. Noises can be reduced and power consumption can be decreased, since only sensor sensing forces of force sensors near the object are used for computing the system sensing force.
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