Abstract: The present invention relates to a method for determining a gesture event in a touch sensitive device comprising at least one transducer, the method comprising the steps of: (a) sensing frames of a raw signal from the at least one transducer; (b) determining a value of a predetermined parameter for each frame of the raw signal; and (c) determining a rising edge and a falling edge in the raw signal based on the values of the predetermined parameter, thereby determining the gesture event.

Abstract: Methods for determining a touch-and-hold touch event on a touch sensitive interaction surface of a touch sensing device are provided and comprise the steps of: a) determining a touch location of the touch event based on vibrations, such as bending waves, propagating through the interaction surface and b) determining whether the touch event comprises a hold touch event based on a sensed airborne signal. A device configured to carry out such methods is also provided.

Abstract: Provided is a touch sensitive display, for integration into an electronic device configured to function in a predetermined temperature range, comprising a display panel and an acoustic isolating means. The acoustic isolating means is configured and arranged such that it presents a damping ratio of 5% or less with a variation of this damping ratio of 2 percentage points or less in the predetermined temperature range. Also provided is a touch sensitive display comprising a display panel and an acoustic isolating means. The acoustic isolating means comprises an elastic material in a first region on the front side of the display panel, with the front main side of the display panel being the displaying side, and an elastic material in a second region on the back side of the display panel and a compression controlling means for compressing the first and/or second region by a predetermined amount.

Abstract: The present invention relates to a method for determining an acoustic response attributed to a location of an impact, in particular a touch event, on a surface of an object including at least one transducer comprising the steps of: Injecting a predetermined acoustic bending wave by the transducer at the transducer position (5a, 5b), Sensing a bending wave parameter at a secondary location (11) on the surface different to the transducer position, determining the acoustic response based on the sensed bending wave parameter and properties of the predetermined acoustic bending wave effectively as if the injection took place at the at least one secondary location (11) on the surface different to the transducer position and the sensing took place at the transducer position based on reciprocity principles, and determining the acoustic response attributed to at least one location (9) on the surface different to the at least one secondary location (11) on the surface different to the transducer position based on at le

Abstract: The present invention relates to a method for determining a gesture event in a touch sensitive device comprising at least one transducer, the method comprising the steps of: (a) sensing frames of a raw signal from the at least one transducer; (b) determining a value of a predetermined parameter for each frame of the raw signal; and (c) determining a rising edge and a falling edge in the raw signal based on the values of the predetermined parameter, thereby determining the gesture event.

Abstract: The present invention relates to a method for determining an acoustic response attributed to a location of an impact, in particular a touch event, on a surface of an object including at least one transducer comprising the steps of: a) receiving an acoustic signal from at least one transducer, wherein the signal corresponds to a predetermined excitation (E) at at least one location on the surface; b) determining an acoustic response based on the acoustic signal received in step a); and c) determining the acoustic response attributed to at least one location on the surface different to the location of the predetermined excitation based on at least two different acoustic responses determined in step b).

Abstract: The invention relates to an electronic device with a touch sensitive surface comprising: a sensing means for capturing an acoustic signal, a touch location determining unit configured to determine the location of a touch event on the touch sensitive surface based on the acoustic signal. To improve the reliability of the touch localization process, the device further comprises a filtering unit configured to improve the signal-to-noise ratio of the acoustic signal based on one or more signals provided by one or more spurious acoustic signal generating devices of the electronic device and/or based on one or more parameters of the one or more spurious acoustic signal generating devices of the electronic device. The invention also relates to a corresponding method. The invention furthermore relates to a method for improving the confidentiality of a user input.

Abstract: The present invention relates to a method for determining an acoustic response attributed to a location of an impact, in particular a touch event, on a surface of an object including at least one transducer comprising the steps of: a) receiving an acoustic signal from at least one transducer, wherein the signal corresponds to a predetermined excitation (E) at at least one location on the surface; b) determining an acoustic response based on the acoustic signal received in step a); and c) determining the acoustic response attributed to at least one location on the surface different to the location of the predetermined excitation based on at least two different acoustic responses determined in step b).

Abstract: Provided is a touch sensitive display, for integration into an electronic device configured to function in a predetermined temperature range, comprising a display panel and an acoustic isolating means. The acoustic isolating means is configured and arranged such that it presents a damping ratio of 5% or less with a variation of this damping ratio of 2 percentage points or less in the predetermined temperature range. Also provided is a touch sensitive display comprising a display panel and an acoustic isolating means. The acoustic isolating means comprises an elastic material in a first region on the front side of the display panel, with the front main side of the display panel being the displaying side, and an elastic material in a second region on the back side of the display panel and a compression controlling means for compressing the first and/or second region by a predetermined amount.

Abstract: The present invention relates to a method for determining an acoustic response attributed to a location of an impact, in particular a touch event, on a surface of an object including at least one transducer comprising the steps of: Injecting a predetermined acoustic bending wave by the transducer at the transducer position (5a, 5b), Sensing a bending wave parameter at a secondary location (11) on the surface different to the transducer position, determining the acoustic response based on the sensed bending wave parameter and properties of the predetermined acoustic bending wave effectively as if the injection took place at the at least one secondary location (11) on the surface different to the transducer position and the sensing took place at the transducer position based on reciprocity principles, and determining the acoustic response attributed to at least one location (9) on the surface different to the at least one secondary location (11) on the surface different to the transducer position based on at le

Abstract: The invention relates to an electronic device with a touch sensitive surface comprising: a sensing means for capturing an acoustic signal, a touch location determining unit configured to determine the location of a touch event on the touch sensitive surface based on the acoustic signal. To improve the reliability of the touch localisation process, the device further comprises a filtering unit configured to improve the signal-to-noise ratio of the acoustic signal based on one or more signals provided by one or more spurious acoustic signal generating devices of the electronic device and/or based on one or more parameters of the one or more spurious acoustic signal generating devices of the electronic device. The invention also relates to a corresponding method. The invention furthermore relates to a method for improving the confidentiality of a user input.

Abstract: A method for determining the locations of at least two impacts F1 and F2 on a surface using one or more sensors Si, i=1 to n, with n being the number of sensors, and the impacts F1 and F2 generating a signal being sensed by the one or more sensors, wherein each sensor provides a sensed signal si(t), i=1 to n, with n being the number of sensors. To be able to determine simultaneous impacts of different amplitudes the method includes identifying the location x of one impact, and determining a modified sensed signal si?(t) for each sensor in which the contribution due to the identified impact is reduced and which is based on a comparison, in particular a correlation, of each of the sensed signals si(t) and a predetermined reference signal rij(t) corresponding to a reference impact Rj at location j. The method can also be based on couples of sensed signals.

Abstract: A method for determining the locations of at least two impacts F1 and F2 on a surface using one or more sensors Si, i=1 to n, with n being the number of sensors, and the impacts F1 and F2 generating a signal being sensed by the one or more sensors, wherein each sensor provides a sensed signal si(t), i=1 to n, with n being the number of sensors. To be able to determine simultaneous impacts of different amplitudes the method includes identifying the location x of one impact, and determining a modified sensed signal si?(t) for each sensor in which the contribution due to the identified impact is reduced and which is based on a comparison, in particular a correlation, of each of the sensed signals si(t) and a predetermined reference signal rij(t) corresponding to a reference impact Rj at location j. The method can also be based on couples of sensed signals.