Abstract: An ultrasound imaging device includes an ultrasound transducer module disposed within a housing and a flowable acoustic damping material disposed on at least one surface located within an interior of the housing. The flowable acoustic damping material may be a Teflon™-containing gel material, in contact with at least one internal surface of the imaging device to provide acoustic damping.

Abstract: An ultrasound imaging device includes an ultrasound transducer module disposed within a housing and a flowable acoustic damping material disposed on at least one surface located within an interior of the housing. The flowable acoustic damping material may be a Teflon-containing gel material, in contact with at least one internal surface of the imaging device to provide acoustic damping.

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 invention relates to a method for determining the location and duration of a sustained contact of a touch event performed by a user on a surface of an object comprising the steps of: a) determining the location of the touch event, in particular based on an acoustic signal generated by the impact of the touch on the surface, and b) determining the duration of the touch event based on a perturbation of a signal generated in or on the object by a transducer characterized in that step b) comprises analyzing the signal generated at or close to N natural frequencies of the object, with N being one or more. The analysis close to the natural frequencies allows the reliable determination of not only the location of a touch event but also whether the user continues to interact with the surface of the object which is due to the important damping of the generated signal in the presence of the touch. The invention also relates to a touch sensitive device configured to carry out the method.

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: 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 a method for determining the location and duration of a sustained contact of a touch event performed by a user on a surface of an object comprising the steps of: a) determining the location of the touch event, in particular based on an acoustic signal generated by the impact of the touch on the surface, and b) determining the duration of the touch event based on a perturbation of a signal generated in or on the object by a transducer characterized in that step b) comprises analyzing the signal generated at or close to N natural frequencies of the object, with N being one or more. The analysis close to the natural frequencies allows the reliable determination of not only the location of a touch event but also whether the user continues to interact with the surface of the object which is due to the important damping of the generated signal in the presence of the touch. The invention also relates to a touch sensitive device configured to carry out the method.

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.