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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    Title :

    ULTRASONIC TOUCH AND FORCE INPUT DETECTION


    Contributors:

    Publication date :

    2019-11-21


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / H04M TELEPHONIC COMMUNICATION , Fernsprechverkehr / B25J Manipulatoren , MANIPULATORS / G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung



    Ultrasonic touch and force input detection

    TANG HAO-YEN / MAGHSOUDNIA MO / CHEN MAN-CHIA | European Patent Office | 2019

    Free access

    Ultrasonic touch and force input detection

    TANG HAO-YEN / MAGHSOUDNIA MO / CHEN MAN-CHIA | European Patent Office | 2020

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    ULTRASONIC TOUCH AND FORCE INPUT DETECTION

    TANG HAO-YEN / MAGHSOUDNIA MO / CHEN MAN-CHIA | European Patent Office | 2020

    Free access