Identifying a contact type
AssigneeSentons Inc.
InventorsSamuel W. Sheng, Shih-Ming Shih, Shirish A. Altekar, Lapoe E. Lynn, Yenyu Hsieh
Life of this patent
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Abstract
A signal to be used to propagate a propagating signal through a propagating medium with a touch input surface is sent. The propagating signal has been allowed to propagate through the propagating medium to a plurality of receivers coupled to the propagating medium. A received signal affected by a contact contacting the touch input surface is received. At least a portion of the received signal is compared with one or more reference signal signatures.
Claims20
A system for detecting a touch input force, comprising:
- a receiver configured to receive a disturbed version of a propagating signal, and the disturbed version of the propagating signal includes the propagating signal that propagated from an originating location on a propagating medium with a surface to a touch input location on the surface where the propagating signal was disturbed by a touch input with an amount of force on the surface;
- and
- a processor configured to process the received disturbed version of the propagating signal to determine a magnitude identifier associated with the amount of force, wherein processing the received disturbed version of the propagating signal includes normalizing the received disturbed version of the propagating signal originating on the propagating medium from the originating location different from the touch input location, and normalizing the received disturbed version of the propagating signal includes scaling an initial amplitude of the received disturbed version of the propagating signal using a value determined using a distance value associated with the touch input location of the disturbance by the touch input on the surface that is different from the originating location of the propagating signal.
A system for detecting a contact on a touch input surface, comprising:
- a transmitter configured to propagate a propagating signal through a propagating medium with the touch input surface to a plurality of receivers coupled to the propagating medium;
- and
- a processor configured to:
- receive a signal affected by the contact contacting the propagating medium, wherein the received signal includes a signal portion that corresponds to the propagating signal that has been disturbed by the contact;
- compare with one or more reference signal signatures of one or more contact types at least a portion of a version of the signal portion of the received signal that corresponds to the propagating signal that has been disturbed by the contact;
- and
- based at least in part on the comparison, determine that one of the one or more contact types corresponds to the contact contacting the propagating medium.
A method for detecting a contact on a touch input surface, comprising:
- propagating a propagating signal through a propagating medium with the touch input surface to a plurality of receivers coupled to the propagating medium;
- receiving a signal affected by the contact contacting the propagating medium, wherein the received signal includes a signal portion that corresponds to the propagating signal that has been disturbed by the contact;
- comparing with one or more reference signal signatures of one or more contact types at least a portion of a version of the signal portion of the received signal that corresponds to the propagating signal that has been disturbed by the contact;
- and
- based at least in part on the comparison, selecting one of the one or more contact types as corresponding to the contact contacting the propagating medium.
Dependencies are inferred from the claim text.