METHOD AND APPARATUS FOR DIFFERENTIATING TOUCH SCREEN USERS BASED ON TOUCH EVENT ANALYSIS
First Claim
1. An apparatus for differentiating touch screen users based on characterization of features derived from the touch event acoustics and mechanical impact;
- the apparatus comprising;
a touch sensitive surface for detecting a touch event from at least one user;
at least one sensor generating a vibro-acoustic waveform signal from such touch event;
a converter for converting the waveform signal into at least a domain signal;
a feature extractor for extracting distinguishing features from said domain signal; and
a classification unit which uses the distinguishing features of said extractor to associate the features of the domain signal with a particular user.
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Abstract
Some embodiments of the present invention include a method of differentiating touch screen users based on characterization of features derived from the touch event acoustics and mechanical impact and includes detecting a touch event on a touch sensitive surface, generating a vibro-acoustic waveform signal using at least one sensor detecting such touch event, converting the waveform signal into at least a domain signal, extracting distinguishing features from said domain signal, and classifying said features to associate the features of the domain signal with a particular user.
27 Citations
21 Claims
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1. An apparatus for differentiating touch screen users based on characterization of features derived from the touch event acoustics and mechanical impact;
- the apparatus comprising;
a touch sensitive surface for detecting a touch event from at least one user; at least one sensor generating a vibro-acoustic waveform signal from such touch event; a converter for converting the waveform signal into at least a domain signal; a feature extractor for extracting distinguishing features from said domain signal; and a classification unit which uses the distinguishing features of said extractor to associate the features of the domain signal with a particular user. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
- the apparatus comprising;
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11. A computer-implemented method for differentiating touch screen users based on characterization of features derived from the touch event acoustics and mechanical impact;
- the method comprising the following steps;
detecting a touch event on a touch sensitive surface; generating a vibro-acoustic waveform signal using at least one sensor detecting such touch event; converting the waveform signal into at least a domain signal; extracting distinguishing features from said domain signal; and classifying said features to associate the features of the domain signal with a particular user. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
- the method comprising the following steps;
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21. A computer readable medium containing instructions for using detected touch screen events to associate particular users with such events, wherein execution of the program instructions by a processor causes the processor to carry out the steps of:
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generating a vibro-acoustic waveform signal using at least one sensor detecting such touch event; converting the waveform signal into at least a domain signal; extracting distinguishing features from said converted waveform signal; and classifying said features to associate the features of the domain signal with a particular user.
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Specification