Contact sensitive device
First Claim
1. A method of determining information relating to a contact on a contact sensitive device comprising the steps of:
- providing a member capable of supporting bending wave vibration, contacting the member at a discrete location to produce a change in bending wave vibration in the member, measuring the changed bending wave vibration in the member to determine a measured bending wave signal, and processing the measured bending wave signal to calculate information relating to the contact.
5 Assignments
0 Petitions
Accused Products
Abstract
Method and apparatus using bending wave vibration to calculate information relating to a contact on a contact sensitive device. The contact sensitive device has a member capable of supporting bending waves, and a device attached to the member measures bending wave propagation in the member to determine a measured bending wave signal. The measured bending wave signal is processed to calculate information relating to the contact. The contact sensitive device may comprise a transparent touch sensitive plate mounted in front of a display device. A stylus (e.g., pen) may be used for writing text or other matter on the touch-sensitive plate. The plate may also be an acoustic device. Three transducers are mounted on the plate. At least two of the transducers are sensing transducers and are thus sensitive to and monitor bending wave vibration in the plate.
104 Citations
97 Claims
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1. A method of determining information relating to a contact on a contact sensitive device comprising the steps of:
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providing a member capable of supporting bending wave vibration, contacting the member at a discrete location to produce a change in bending wave vibration in the member, measuring the changed bending wave vibration in the member to determine a measured bending wave signal, and processing the measured bending wave signal to calculate information relating to the contact. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A method of determining information relating to a contact on a contact sensitive device comprising the steps of:
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providing a member capable of supporting bending wave vibration, generating bending wave vibration in the member to probe for information relating to a contact, contacting the member at a discrete location to produce a change in the generated bending wave vibration in the member, measuring the changed bending wave vibration in the member to determine a measured bending wave signal, and processing the measured bending wave signal to calculate information relating to the contact. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51)
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52. A method of determining information relating to a contact on a contact sensitive device comprising the steps of:
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providing a panel-form member capable of supporting bending wave vibration, generating bending wave vibration in the member from one location on the member to probe for information relating to a contact, contacting the member at a discrete location to produce a change in the generated bending wave vibration in the member, measuring the changed bending wave vibration in the member at two locations on the member to determine a measured bending wave signal, and processing the measured bending wave signal to calculate information relating to the contact. - View Dependent Claims (53, 54, 55, 56, 57, 58, 59, 60, 61)
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62. A contact sensitive device comprising:
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a member capable of supporting bending wave vibration, at least one sensor coupled to the member for measuring bending wave vibration in the member, and a processor operatively coupled to the at least one sensor for processing information relating to a contact made on a surface on the member from the change in bending wave vibration in the member produced by the contact and measured by the at least one sensor. - View Dependent Claims (63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92)
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93. A contact sensitive device incorporating a loudspeaker, the device comprising:
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a member capable of supporting bending wave vibration and forming an acoustic radiator when excited, an exciter coupled to the member for exciting bending wave vibration in the member to probe for information relating to a contact made on a surface of the member, and to cause the member to produce an acoustic output, at least one sensor coupled to the member for measuring bending wave vibration in the member, and a processor operatively coupled to the at least one sensor for processing information relating to the contact from the change in bending wave vibration in the member produced by the contact and measured by the at least one sensor. - View Dependent Claims (94, 95, 96, 97)
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Specification