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公开(公告)号：US12154732B2
公开(公告)日：2024-11-26
申请号：US17859072
申请日：2022-07-07
Applicant: PIXART IMAGING INC.
Inventor： Che-Chia Hsu , Yu-Han Chen , Chi-Chieh Liao
IPC: H01H13/7065 , G06F3/02 , H01H13/14 , H03K17/96
Abstract: A key unit and a keyboard using the same are provided. The key unit includes a circuit board, a supporting assembly, a keycap, and a floating conductive structure. The circuit board includes a capacitance sensing circuit embedded therein, and the capacitance sensing circuit includes a pair of sensor electrodes which are spaced apart from each other. The supporting assembly is disposed on the circuit board. The keycap is moveably disposed above and spaced apart from the circuit board. The supporting assembly disposed between the keycap and the circuit board allows the keycap to be moved between a non-depressed position and a depressed position with respect to the circuit board. The floating conductive structure is disposed on the supporting assembly, and an orthogonal projection of the floating conductive structure on the circuit board overlaps with the pair of sensor electrodes.
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公开(公告)号：US11437994B2
公开(公告)日：2022-09-06
申请号：US17134940
申请日：2020-12-28
Applicant: PIXART IMAGING INC.
Inventor： Che-Chia Hsu , Yu-Han Chen , Chi-Chieh Liao
Abstract: A touch sensor and a keyboard using the same are provided. The touch sensor includes a plurality of main sensor structures and a plurality of resilient structures. Any two adjacent ones of the main sensor structures have a gap therebetween. Each of the resilient structures is connected between two adjacent ones of the main sensor structures, and each of the resilient structures has a cross-sectional width that is less than a width of the gap.
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公开(公告)号：US11222197B2
公开(公告)日：2022-01-11
申请号：US16252769
申请日：2019-01-21
Applicant: PixArt Imaging Inc.
Inventor： Liang-Chi Chiu , Yu-Han Chen , Ming-Tsan Kao
Abstract: A user recognition and confirmation device includes an image sensing unit, a face recognition unit, a display unit and an expression recognition unit. The image sensing unit captures a first image frame and a second image frame. The face recognition unit is configured to recognize a user ID according to the first image frame. The display unit is configured to show ID information of the user ID. The expression recognition unit is configured to confirm a user expression according to the second image frame and output a confirm signal. There is further provided a user recognition and confirmation method and a central control system for vehicles.
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公开(公告)号：US10831321B2
公开(公告)日：2020-11-10
申请号：US15957726
申请日：2018-04-19
Applicant: PixArt Imaging Inc.
Inventor： Kok-Siang Tan , Yu-Han Chen , Meng-Lin Yu , Kei-Tee Tiew
IPC: G06F3/044
Abstract: There is provided a parallel sensing touch control device including a capacitive sensor array processed by differential unit. In one detection interval, the device is concurrently conducting more than one sensing electrode of the capacitive sensor array so as to reduce a scanning interval of the capacitive sensor array. The differential unit performs a differential operation on detected signals to cancel out common mode noise.
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公开(公告)号：US20200149988A1
公开(公告)日：2020-05-14
申请号：US16746967
申请日：2020-01-20
Applicant: PixArt Imaging Inc.
Inventor： Yu-Han Chen , Chih-Wei Huang , Chi-Chieh Liao , Wei-Chung Wang
Abstract: A pressure measuring method, applied to a pressure measuring apparatus, comprising: measuring a first pressure sensing value when the pressure measuring apparatus operates at a first scan frequency and receives a first pressure; and measuring a second pressure sensing value when the pressure measuring apparatus operates a second scan frequency and receives the first pressure. The first pressure sensing value and the second pressure sensing value are different, and a change between the first pressure sensing value and the second pressure sensing value is according to a change between the first scan frequency and the second scan frequency. The first scan frequency and the second scan frequency are different. The pressure measuring method can further comprise a calibrating mechanism to compensate the sensed pressure. By this way, the pressure sensing value can be calibrated, to solve the issue that the pressure sensing values are affected by scan frequencies.
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Patent Agency Ranking
公开(公告)号：US10437365B2
公开(公告)日：2019-10-08
申请号：US15730698
申请日：2017-10-11
Applicant: PixArt Imaging Inc.
Inventor： Chi-Chieh Liao , Che-Chia Hsu , Yu-Han Chen
Abstract: A driver integrated circuit (IC) includes: a built-in capacitor, a reading circuit, an analog-to-digital converter (ADC) and a coupling circuit, wherein the reading circuit receives a sensing signal from a touch panel and outputs an analog sensing data; the ADC is coupled to the reading circuit, and is used to receive and convert the analog sensing data to a digital sensing data; and the coupling circuit is coupled to the reading circuit, and is used to selectively couple the built-in capacitor to the touch panel when the driver IC operates in a touch sensing mode.
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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：US20190107907A1
公开(公告)日：2019-04-11
申请号：US15730698
申请日：2017-10-11
Applicant: PixArt Imaging Inc.
Inventor： Chi-Chieh Liao , Che-Chia Hsu , Yu-Han Chen
CPC classification number: G06F3/0412 , G06F3/0416 , G06F3/04166 , G06F3/044 , G06F3/0446 , H03M1/12
Abstract: A driver integrated circuit (IC) includes: a built-in capacitor, a reading circuit, an analog-to-digital converter (ADC) and a coupling circuit, wherein the reading circuit receives a sensing signal from a touch panel and outputs an analog sensing data; the ADC is coupled to the reading circuit, and is used to receive and convert the analog sensing data to a digital sensing data; and the coupling circuit is coupled to the reading circuit, and is used to selectively couple the built-in capacitor to the touch panel when the driver IC operates in a touch sensing mode.
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公开(公告)号：US10013071B2
公开(公告)日：2018-07-03
申请号：US15340847
申请日：2016-11-01
Applicant: PIXART IMAGING INC.
Inventor： Yu-Han Chen , Chi-Chieh Liao , Chia-Yi Lee
CPC classification number: G06F3/017 , G06F3/0416 , G06F3/044 , G06F3/04883 , G06F2203/04101
Abstract: Disclosed is a three-dimensional gesture sensing method. The three-dimensional gesture sensing method comprises the following steps. Step A: driving at least one first conductive line of conductive lines in the touch sensing device as a first working sensing line, and driving at least one second conductive line of the conductive lines in the touch sensing device as a second working sensing line, such that a sensing area is formed between the first working sensing line and the second working sensing line. Step B: detecting a conductor according to the sensing area. Step C: dynamically adjusting at least the area, the position or the amount of the sensing area according to the conductor to implement a three-dimensional gesture sensing.
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公开(公告)号：US20170292888A1
公开(公告)日：2017-10-12
申请号：US15482815
申请日：2017-04-09
Applicant: PixArt Imaging Inc.
Inventor： Yu-Han Chen , Chih-Wei Huang , Chi-Chieh Liao , Wei-Chung Wang
CPC classification number: G01L25/00 , G01L1/142 , G06F3/0418 , G06F3/044
Abstract: A pressure measuring method, applied to a pressure measuring apparatus, comprising: measuring a first pressure sensing value of the pressure measuring apparatus, which corresponds to a first pressure in a test mode; measuring a second pressure sensing value of the pressure measuring apparatus, which corresponds to a second pressure in the test mode; generating a first corresponding function according to the first pressure, the second pressure, the first pressure sensing value and the second pressure sensing value; sensing a third pressure sensing value via the pressure measuring apparatus in a normal mode; and generating a third pressure according to the third pressure sensing value via the first corresponding function; wherein the pressure measuring apparatus operates at a first scan frequency. By this way, the pressure sensing value can be calibrated, to solve the issue that the pressure sensing values are affected by scan frequencies.
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