Touch sensitive device
First Claim
1. A method of making a touch-sensitive data entry screen to provide haptic response to a user, the user'"'"'s touch on the screen providing bending waves via at least one electromechanical exciter coupled to the touch-sensitive data entry screen, the method comprisingmounting the touch sensitive data entry screen on a resilient suspension to form a mechanical and electromechanical coupled system;
- analyzing each of the touch-sensitive data entry screen, the resilient suspension and the at least one electromechanical exciter including the bending wave excitation to determine values of parameters of the mechanical and electromechanical coupled system to produce the haptic response; and
selecting a resonant frequency of the at least one electromechanical exciter to substantially coincide with a resonant frequency of the resiliently mounted touch-sensitive data entry screen to provide a required displacement and acceleration of the touch-sensitive data entry screen at a low frequency.
6 Assignments
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Accused Products
Abstract
A method of making a touch-sensitive data entry screen of the kind arranged to provide haptic response to a user via at least one electromechanical exciter coupled to the screen, comprising analyzing the mechanical and electromechanical coupled system represented by the data entry screen and the at least one exciter, and selecting values of parameters of the coupled system to provide a required displacement and acceleration of the screen at low frequency in response to human touch.
26 Citations
24 Claims
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1. A method of making a touch-sensitive data entry screen to provide haptic response to a user, the user'"'"'s touch on the screen providing bending waves via at least one electromechanical exciter coupled to the touch-sensitive data entry screen, the method comprising
mounting the touch sensitive data entry screen on a resilient suspension to form a mechanical and electromechanical coupled system; -
analyzing each of the touch-sensitive data entry screen, the resilient suspension and the at least one electromechanical exciter including the bending wave excitation to determine values of parameters of the mechanical and electromechanical coupled system to produce the haptic response; and selecting a resonant frequency of the at least one electromechanical exciter to substantially coincide with a resonant frequency of the resiliently mounted touch-sensitive data entry screen to provide a required displacement and acceleration of the touch-sensitive data entry screen at a low frequency. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A touch screen apparatus for providing haptic responses to a user, said screen comprising:
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a panel selected to have a predetermined mass and a target resonant frequency and acceleration, the target resonance and acceleration selected to have a low frequency; at least one electromechanical exciter coupled to the panel for producing bending waves excited by the user'"'"'s touch, the least one electromechanical exciter being selected to match the target resonant frequency; a resilient suspension selected to provide the targeted panel acceleration and resonance, when coupled to the panel forms a mechanical and electromechanical coupled system. - View Dependent Claims (19, 20, 21, 22)
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23. A method of selecting parameters which are used to make a touch-sensitive data entry screen of the kind arranged to provide haptic response to a user via at least one electromechanical exciter coupled to the touch-sensitive data entry screen, and in which bending waves are excited in the touch-sensitive data entry screen in response to human touch, the touch-sensitive data entry screen being resiliently mounted on a suspension to form a mechanical and electromechanical coupled system, the method comprising:
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analysing the mechanical and electromechanical coupled system represented by the touch-sensitive data entry screen, the suspension and the at least one exciter including the bending wave excitation in the resiliently mounted touch-sensitive data entry screen, selecting values of parameters of the coupled system to provide a required displacement and acceleration of the touch-sensitive data entry screen at low frequency and such that a resonant frequency of the at least one electromechanical exciter substantially coincides with a resonant frequency of the resiliently mounted touch-sensitive data entry screen.
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24. A method for selecting values of parameters for making a touch-sensitive data entry screen providing haptic response to a user, the screen including at least one electromechanical exciter coupled to the screen and bending waves excited by the user'"'"'s touch, said method comprising the steps of:
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setting a predetermined resonant frequency together with a predetermined panel acceleration having the same frequency, the resonant frequency being excited in the panel to produce a haptic sensation, the resonant frequency being a low frequency; determining a mass of the panel having the touch-sensitive data entry screen; selecting a exciter to excite resonance in the panel, an internal exciter resonance may be matched to the desired resonant frequency; selecting panel suspension parameters to provide the predetermined panel acceleration at the desired resonant frequency; resiliently mounting the touch screen data entry screen on the selected suspension to form a mechanical and electromechanical coupled system; and providing the required displacement and acceleration of the data entry screen at the low frequency such that a resonant frequency of the at least one electromechanical exciter substantially coincides with a resonant frequency of the resiliently mounted touch-sensitive data entry screen.
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Specification