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公开(公告)号：US10466844B1
公开(公告)日：2019-11-05
申请号：US16396597
申请日：2019-04-26
发明人： Hao-Yen Tang , Mo Maghsoudnia , Man-Chia Chen
摘要： Touch events can be detected using an ultrasound input device coupled to a surface, such as a surface of a piece of furniture or electronic device. The ultrasound input device can generate ultrasonic waves in the surface, the reflections of which can be measured by the ultrasound input device. When a touch is made to the surface (e.g., opposite the ultrasound input device), the physical contact can absorb some of the energy of the outgoing ultrasonic waves (e.g., the originally transmitted wave and any subsequent outgoing reflections). Energy measurements associated with the measured reflections can thus be used to identify touch events. Various techniques can be used to make the energy measurements and reduce identification of false touch events.
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公开(公告)号：US11725993B2
公开(公告)日：2023-08-15
申请号：US17119365
申请日：2020-12-11
发明人： Hao-Yen Tang , Sina Akhbari , Man-Chia Chen , Zhongxuan Tu , Michael Chen
CPC分类号： G01L1/16 , G01H11/08 , H10N30/10513 , H10N30/302 , H10N30/50 , H10N30/875
摘要： A force-measuring and touch-sensing integrated circuit device includes a semiconductor substrate, a thin-film piezoelectric stack overlying the semiconductor substrate, piezoelectric micromechanical force-measuring elements (PMFEs), and piezoelectric micromechanical ultrasonic transducers (PMUTs). The thin-film piezoelectric stack includes a piezoelectric layer. The PMFEs and PMUTs are located at respective lateral positions along the thin-film piezoelectric stack, such that each of the PMFEs and PMUTs includes a respective portion of the thin-film piezoelectric stack. Each PMUT has a cavity, the respective portion of the thin-film piezoelectric stack, and first and second PMUT electrodes. Each PMFE has the respective portion of the thin-film piezoelectric stack, and first and second PMFE electrodes. Each PMFE is configured to output voltage signals between the PMFE electrodes in accordance with a time-varying strain at the respective portion of the piezoelectric layer resulting from a low-frequency mechanical deformation.
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公开(公告)号：US10585534B2
公开(公告)日：2020-03-10
申请号：US16417184
申请日：2019-05-20
发明人： Hao-Yen Tang , Sina Akhbari , Mo Maghsoudnia , Man-Chia Chen
摘要： An ultrasound input device can be coupled to a material layer having an external surface located opposite the material layer from the ultrasound input device. The ultrasound input device can transmit an emitted signal through the material layer towards the external surface and receive a set of reflected ultrasound signals associated with the emitted signal. The set of reflected ultrasound signals comprises at least one reflected ultrasound signal, and the set of reflected ultrasound signals can be associated with a touch event between an object and the external surface. A system can comprise one or more data processors configured for performing operations including determining an energy signal associated with the set of reflected ultrasound signals, extracting feature information associated with the energy signal, determining an inference associated with the object based on the extracted feature information, and generating an output signal associated with the determined inference.
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公开(公告)号：US20230033775A1
公开(公告)日：2023-02-02
申请号：US17965082
申请日：2022-10-13
发明人： Sina Akhbari , Hao-Yen Tang , Mo Maghsoudnia , Man-Chia Chen
摘要： A method includes receiving energy data associated with an ultrasound input device coupled to a material layer. The energy data comprises a current energy value and past energy values associated with reflected ultrasound signals received at the ultrasound input device in response to the ultrasound input device transmitting emitted signals through the material layer towards an external surface of the material layer. The method can then include comparing the energy data with threshold data to generate a current trigger value for trigger data. The trigger data is indicative of an occurrence of a touch event when the current energy value exceeds a current threshold value of the threshold data. Then the method can include updating the threshold data based on the energy data, the trigger data, and the threshold data. Updating the threshold data comprises generating a subsequent threshold value.
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公开(公告)号：US10775938B2
公开(公告)日：2020-09-15
申请号：US16570995
申请日：2019-09-13
发明人： Hao-Yen Tang , Mo Maghsoudnia , Man-Chia Chen
摘要： Touch events can be detected using an ultrasound input device coupled to a surface, such as a surface of a piece of furniture or electronic device. The ultrasound input device can generate ultrasonic waves in the surface, the reflections of which can be measured by the ultrasound input device. When a touch is made to the surface (e.g., opposite the ultrasound input device), the physical contact can absorb some of the energy of the outgoing ultrasonic waves (e.g., the originally transmitted wave and any subsequent outgoing reflections). Energy measurements associated with the measured reflections can thus be used to identify touch events. Various techniques can be used to make the energy measurements and reduce identification of false touch events.
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公开(公告)号：US20190354237A1
公开(公告)日：2019-11-21
申请号：US16396597
申请日：2019-04-26
发明人： Hao-Yen Tang , Mo Maghsoudnia , Man-Chia Chen
摘要： Touch events can be detected using an ultrasound input device coupled to a surface, such as a surface of a piece of furniture or electronic device. The ultrasound input device can generate ultrasonic waves in the surface, the reflections of which can be measured by the ultrasound input device. When a touch is made to the surface (e.g., opposite the ultrasound input device), the physical contact can absorb some of the energy of the outgoing ultrasonic waves (e.g., the originally transmitted wave and any subsequent outgoing reflections). Energy measurements associated with the measured reflections can thus be used to identify touch events. Various techniques can be used to make the energy measurements and reduce identification of false touch events.
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公开(公告)号：US20190354209A1
公开(公告)日：2019-11-21
申请号：US16417184
申请日：2019-05-20
发明人： Hao-Yen Tang , Sina Akhbari , Mo Maghsoudnia , Man-Chia Chen
摘要： An ultrasound input device can be coupled to a material layer having an external surface located opposite the material layer from the ultrasound input device. The ultrasound input device can transmit an emitted signal through the material layer towards the external surface and receive a set of reflected ultrasound signals associated with the emitted signal. The set of reflected ultrasound signals comprises at least one reflected ultrasound signal, and the set of reflected ultrasound signals can be associated with a touch event between an object and the external surface. A system can comprise one or more data processors configured for performing operations including determining an energy signal associated with the set of reflected ultrasound signals, extracting feature information associated with the energy signal, determining an inference associated with the object based on the extracted feature information, and generating an output signal associated with the determined inference.
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公开(公告)号：US11500494B2
公开(公告)日：2022-11-15
申请号：US17165878
申请日：2021-02-02
发明人： Sina Akhbari , Hao-Yen Tang , Mo Maghsoudnia , Man-Chia Chen
摘要： A method includes receiving energy data associated with an ultrasound input device coupled to a material layer. The energy data comprises a current energy value and past energy values associated with reflected ultrasound signals received at the ultrasound input device in response to the ultrasound input device transmitting emitted signals through the material layer towards an external surface of the material layer. The method can then include comparing the energy data with threshold data to generate a current trigger value for trigger data. The trigger data is indicative of an occurrence of a touch event when the current energy value exceeds a current threshold value of the threshold data. Then the method can include updating the threshold data based on the energy data, the trigger data, and the threshold data. Updating the threshold data comprises generating a subsequent threshold value.
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公开(公告)号：US20210278926A1
公开(公告)日：2021-09-09
申请号：US17165878
申请日：2021-02-02
发明人： Sina Akhbari , Hao-Yen Tang , Mo Maghsoudnia , Man-Chia Chen
摘要： A method includes receiving energy data associated with an ultrasound input device coupled to a material layer. The energy data comprises a current energy value and past energy values associated with reflected ultrasound signals received at the ultrasound input device in response to the ultrasound input device transmitting emitted signals through the material layer towards an external surface of the material layer. The method can then include comparing the energy data with threshold data to generate a current trigger value for trigger data. The trigger data is indicative of an occurrence of a touch event when the current energy value exceeds a current threshold value of the threshold data. Then the method can include updating the threshold data based on the energy data, the trigger data, and the threshold data. Updating the threshold data comprises generating a subsequent threshold value.
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公开(公告)号：US20200012385A1
公开(公告)日：2020-01-09
申请号：US16570995
申请日：2019-09-13
发明人： Hao-Yen Tang , Mo Maghsoudnia , Man-Chia Chen
摘要： Touch events can be detected using an ultrasound input device coupled to a surface, such as a surface of a piece of furniture or electronic device. The ultrasound input device can generate ultrasonic waves in the surface, the reflections of which can be measured by the ultrasound input device. When a touch is made to the surface (e.g., opposite the ultrasound input device), the physical contact can absorb some of the energy of the outgoing ultrasonic waves (e.g., the originally transmitted wave and any subsequent outgoing reflections). Energy measurements associated with the measured reflections can thus be used to identify touch events. Various techniques can be used to make the energy measurements and reduce identification of false touch events.
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