LOCATING MULTIPLE OBJECTS ON A CAPACITIVE TOUCH PAD
First Claim
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1. A method for determining locations of a plurality of objects contemporaneously interacting with a capacitive touch pad having a sensing region, the method comprising:
- generating a first capacitive profile associated with a first object and a second object contemporaneously in said sensing region; and
determining locations of said first and second objects with respect to said sensing region utilizing said first capacitive profile.
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Abstract
A system and method for locating multiple objects on a capacitive touch pad is described. The method for determining locations of a plurality of objects contemporaneously interacting with a capacitive touch pad having a sensing region includes generating a first capacitive profile associated with a first object and a second object contemporaneously in the sensing region and determining locations of the first and second objects with respect to the sensing region utilizing the first capacitive profile.
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Citations
25 Claims
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1. A method for determining locations of a plurality of objects contemporaneously interacting with a capacitive touch pad having a sensing region, the method comprising:
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generating a first capacitive profile associated with a first object and a second object contemporaneously in said sensing region; and determining locations of said first and second objects with respect to said sensing region utilizing said first capacitive profile. - View Dependent Claims (2, 3, 4, 5)
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6. A computer-readable medium have computer-readable code stored thereon for causing a processor to perform a method for determining locations of a plurality of objects contemporaneously interacting with a capacitive touch pad having a sensing region, the method comprising:
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generating a first capacitive profile associated with a first object and a second object contemporaneously in said sensing region with respect to a first axis of said sensing region, said first capacitive profile comprising capacitance values associated with said first axis; determining locations of said first and second objects with respect to said first axis of said sensing region utilizing said first capacitive profile; generating a second capacitive profile associated with said first object and said second object contemporaneously in said sensing region with respect to a second axis of said sensing region, said second capacitive profile comprising capacitance values associated with said second axis; and determining locations of said first and second objects with respect to said second axis of said sensing region utilizing said second capacitive profile. - View Dependent Claims (7, 8, 9, 10)
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11. A method for determining locations of a plurality of objects interacting with a capacitive touch pad that generates capacitance profiles comprising:
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generating a first capacitance profile associated with a first object proximate said touch pad; determining a position of said first object with respect to said touch pad based on said first capacitance profile; generating a second capacitance profile associated with said first object and a second object simultaneously proximate said touch pad; determining an adjusted capacitance profile based on said first and second capacitance profiles; and determining a position of said second conductive object with respect to said touch pad based on said adjusted capacitance profile. - View Dependent Claims (12, 13, 14, 15)
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16. A capacitance sensing touch pad for determining locations of a plurality of objects comprising:
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a capacitance profile generator coupled with said touch pad for generating a first capacitance profile associated with a first object proximate said touch pad; a position determiner coupled with said profile generator for determining a position of said first object with respect to said touch pad based on said first capacitance profile; said capacitance profile generator for generating a second capacitance profile associated with said first object and a second object simultaneously proximate said touch pad; a profile adjuster coupled with said profile generator for determining an adjusted capacitance profile based on said first and second capacitance profiles; and said position determiner for determining a position of said second conductive object with respect to said touch pad based on said adjusted capacitance profile. - View Dependent Claims (17, 18, 19, 20)
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21. A module for identifying a plurality of objects interacting with a capacitive touch pad comprising:
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a first input for accessing a signal corresponding to a first object proximate said capacitive touch pad; a profile generator for generating a first capacitive profile associated with said first object; a second input for accessing a signal indicating a second object proximate said capacitive touch pad, wherein said profile generator is also for generating a second capacitive profile associated with said second object; and a location determiner for determining locations of said first and second objects with respect to said capacitive touch pad utilizing said first and second capacitive profiles. - View Dependent Claims (22, 23, 24, 25)
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Specification