Acoustic wave touch actuated switch with feedback
First Claim
1. A feedback mechanism for an acoustic wave switch having a touch sensitive surface comprising:
- a deformable dome overlying the touch sensitive surface of the acoustic wave switch, the dome in an unactuated position being spaced from the touch sensitive surface of the switch; and
an acoustic wave absorbing material disposed between the deformable dome and the touch sensitive surface such that in response to a force acting on the dome, the dome deforms and contacts the absorbing material and the absorbing material contacts the touch sensitive surface of the acoustic wave switch with sufficient pressure to actuate the acoustic wave switch.
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Accused Products
Abstract
An acoustic wave switch includes a substrate with an acoustic wave cavity formed therein such that the mass per unit area of the acoustic cavity is greater than the mass per unit area of the substrate adjacent the cavity. A transducer is mounted on the acoustic cavity for generating an acoustic wave that is substantially trapped in the cavity. A touch on the touch surface of the acoustic wave cavity absorbs acoustic wave energy and produces a detectable change in the impedance of the transducer. Various feedback mechanisms can be employed to provide a user with a tactile, audible and/or visual response indicating actuation of the switch by a touch.
39 Citations
8 Claims
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1. A feedback mechanism for an acoustic wave switch having a touch sensitive surface comprising:
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a deformable dome overlying the touch sensitive surface of the acoustic wave switch, the dome in an unactuated position being spaced from the touch sensitive surface of the switch; and an acoustic wave absorbing material disposed between the deformable dome and the touch sensitive surface such that in response to a force acting on the dome, the dome deforms and contacts the absorbing material and the absorbing material contacts the touch sensitive surface of the acoustic wave switch with sufficient pressure to actuate the acoustic wave switch. - View Dependent Claims (2, 3)
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4. A feedback mechanism for an acoustic wave switch having a touch sensitive surface comprising:
an actuator overlying the touch sensitive surface of the acoustic wave switch and an acoustic wave absorbing material mounted on the actuator, the acoustic wave absorbing material being spaced from the touch sensitive surface of the acoustic wave switch when the actuator is in an unactuated position and the acoustic wave absorbing material contacting the touch sensitive surface of the switch actuating the acoustic wave switch in response to a force acting on the actuator to move the acoustic wave absorbing material into actuating contact with the touch sensitive surface of the acoustic wave switch. - View Dependent Claims (5, 6, 7)
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8. A feedback mechanism for an acoustic wave switch having a touch sensitive surface comprising:
an actuator overlying the touch sensitive surface of the acoustic wave switch and an acoustic wave absorbing material mounted on the actuator, the acoustic wave absorbing material being spaced from the touch sensitive surface of the acoustic wave switch when the actuator is in an unactuated position and the acoustic wave absorbing material contacting the touch sensitive surface of the switch actuating the acoustic wave switch in response to a force acting on the actuator to move the acoustic wave absorbing material into actuating contact with the touch sensitive surface of the acoustic wave switch, wherein the actuator includes a rocker having a pivot with a magnet mounted on the rocker on a first side of the pivot to hold the actuator in an unactuated position and the magnet returns the actuator to the unactuated position when the force is removed.
Specification