Contact sensitive device
First Claim
1. A method of determining information relating to a contact on a passive contact sensitive device comprising the steps of:
- providing a member capable of supporting bending wave vibration,contacting the member at a discrete location to generate bending wave vibration in the member,measuring the bending wave vibration in the member to determine a measured bending wave signal, andprocessing the measured bending wave signal to calculate information relating to the contact including applying a correction to convert the measured bending wave signal to a propagation signal from a non-dispersive wave source.
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.
-
Citations
80 Claims
-
1. A method of determining information relating to a contact on a passive contact sensitive device comprising the steps of:
-
providing a member capable of supporting bending wave vibration, contacting the member at a discrete location to generate bending wave vibration in the member, measuring the 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 including applying a correction to convert the measured bending wave signal to a propagation signal from a non-dispersive wave source. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
-
-
20. A method of determining information relating to a contact on a contact sensitive device comprising:
-
contacting a member capable of supporting bending waves 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, wherein processing the measured bending wave signal comprises applying a correction to convert the measured bending wave signal to a propagation signal from a non-dispersive wave source. - View Dependent Claims (21, 22, 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. A passive contact sensitive device comprising:
-
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 generation of bending wave vibration in the member created by the contact and measured by the at least one sensor and for applying a correction to convert the measured bending wave signal to a propagation signal from a non-dispersive wave source. - View Dependent Claims (52, 53, 54, 55, 56, 57, 58, 59, 60, 61)
-
-
62. A contact sensitive device comprising:
-
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 a change in bending wave vibration in the member caused by the contact and measured by the at least one sensor and for applying a correction to convert the measured bending wave signal to a propagation signal from a non-dispersive wave source. - View Dependent Claims (63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78)
-
-
79. A method of determining information relating to a contact on a passive contact sensitive device comprising the steps of:
-
providing a member capable of supporting bending wave vibration, contacting the member to generate bending wave vibration in the member by frictional movement of the contact, measuring the 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 (80)
-
Specification