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公开(公告)号：EP3916525A1
公开(公告)日：2021-12-01
申请号：EP21186570.4
申请日：2016-02-19
发明人： LONG, Benjamin John Oliver , CARTER, Thomas Andrew , SUBRAMANIAN, Sriram , BLENKINSOPP, Robert Charles , SEAH, Sue Ann , FRIER, William Thierry Alain
摘要： A system providing various improved perceptions techniques for haptic feedback above interactive surfaces that require no contact with either tools, attachments or the surface itself is described. A range of receptors in a perceiving member which is part of the human body is identified to create substantially uniformly perceivable feedback. A vibration frequency that is in the range of the receptors in the perceiving member is chosen and dynamically altered to create substantially uniformly perceivable feedback throughout the receiving member.
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公开(公告)号：EP3494456A1
公开(公告)日：2019-06-12
申请号：EP17748466.4
申请日：2017-08-02
IPC分类号： G06F3/01 , G06F3/0488 , G06F3/041
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公开(公告)号：EP4414556A3
公开(公告)日：2024-10-23
申请号：EP24183906.7
申请日：2019-05-02
IPC分类号： B06B1/06 , F04B43/04 , F04B45/047 , G10K9/22
摘要： An acoustic matching structure is used to increase the power radiated from a transducing element with a higher impedance into a surrounding acoustic medium with a lower acoustic impedance. The acoustic matching structure consists of a thin, substantially planar cavity bounded by a two end walls and a side wall. The end walls of the cavity are formed by a blocking plate wall and a transducing element wall separated by a short distance (less than one quarter of the wavelength of acoustic waves in the surrounding medium at the operating frequency). The end walls and side wall bound a cavity with diameter approximately equal to half of the wavelength of acoustic waves in the surrounding medium. In operation, a transducing element generates acoustic oscillations in the fluid in the cavity. The transducing element may be an actuator which generates motion of an end wall in a direction perpendicular to the plane of the cavity to excite acoustic oscillations in the fluid in the cavity, and the cavity geometry and resonant amplification increase the amplitude of the resulting pressure oscillation. The cavity side wall or end walls contain at least one aperture positioned away from the center of the cavity to allow pressure waves to propagate into the surrounding acoustic medium.
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公开(公告)号：EP4414556A2
公开(公告)日：2024-08-14
申请号：EP24183906.7
申请日：2019-05-02
IPC分类号： F04B45/047
CPC分类号： F04B43/046 , F04B45/047 , B06B1/067 , G10K11/02
摘要： An acoustic matching structure is used to increase the power radiated from a transducing element with a higher impedance into a surrounding acoustic medium with a lower acoustic impedance. The acoustic matching structure consists of a thin, substantially planar cavity bounded by a two end walls and a side wall. The end walls of the cavity are formed by a blocking plate wall and a transducing element wall separated by a short distance (less than one quarter of the wavelength of acoustic waves in the surrounding medium at the operating frequency). The end walls and side wall bound a cavity with diameter approximately equal to half of the wavelength of acoustic waves in the surrounding medium. In operation, a transducing element generates acoustic oscillations in the fluid in the cavity. The transducing element may be an actuator which generates motion of an end wall in a direction perpendicular to the plane of the cavity to excite acoustic oscillations in the fluid in the cavity, and the cavity geometry and resonant amplification increase the amplitude of the resulting pressure oscillation. The cavity side wall or end walls contain at least one aperture positioned away from the center of the cavity to allow pressure waves to propagate into the surrounding acoustic medium.
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