Display devices and methods for detecting user-intended touch input
First Claim
1. A display device comprising:
- a touch-sensitive display;
an impact sensor attached to the touch-sensitive display and configured to generate a signal representative of impacts to the touch-sensitive display; and
a computing unit configured to;
receive the signal;
detect a peak value of the signal;
determine whether a rising edge of the peak detected signal and the magnitude of the peak detected signal meet predetermined criteria; and
indicate detection of user-intended touch in response to determining that the predetermined criteria are met,wherein the computing unit comprises;
a voltage divider configured to receive the peak detected signal and generate a first output that is a fraction of the peak detected signal;
a low pass filter configured to receive the peak detected signal and to apply low-pass filtering to the peak detected signal to generate a second output; and
a comparator configured to receive the first and second outputs as inputs and to generate a trigger pulse in response to the first output being greater than the second output to indicate detection of user-intended touch.
1 Assignment
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Accused Products
Abstract
Display devices and methods for detecting user-intended touch input are provided. An example display device includes a touch-sensitive display. Further, the display device includes an impact sensor attached to the touch-sensitive display and configured to generate a signal representative of an impact of the touch-sensitive display. The display device also includes a computing device configured to receive the signal. The computing device is also configured to detect a peak of the signal. Further, the computing device is configured to determine whether a rising edge of a magnitude of the peak detected signal meet predetermined criteria. The computing device is also configured to indicate detection of user-intended touch in response to determining that the predetermined criteria are met.
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Citations
22 Claims
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1. A display device comprising:
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a touch-sensitive display; an impact sensor attached to the touch-sensitive display and configured to generate a signal representative of impacts to the touch-sensitive display; and a computing unit configured to; receive the signal; detect a peak value of the signal; determine whether a rising edge of the peak detected signal and the magnitude of the peak detected signal meet predetermined criteria; and indicate detection of user-intended touch in response to determining that the predetermined criteria are met, wherein the computing unit comprises; a voltage divider configured to receive the peak detected signal and generate a first output that is a fraction of the peak detected signal; a low pass filter configured to receive the peak detected signal and to apply low-pass filtering to the peak detected signal to generate a second output; and a comparator configured to receive the first and second outputs as inputs and to generate a trigger pulse in response to the first output being greater than the second output to indicate detection of user-intended touch. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method comprising:
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generating a signal representative of an impact to a touch-sensitive display; detecting a peak value of the signal; determining whether a rising edge of the peak detected signal and the magnitude of the peak detected signal meet predetermined criteria, wherein determining whether the rising edge comprising; using a voltage divider to receive the peak detected signal and to generate a first output that is a fraction of the peak detected signal; and using a low pass filter to receive the peak detected signal and to apply low-pass filtering to the peak detected signal to generate a second output; generating an indication in response to the first output being greater than the second output to indicate determination that the predetermined criteria are met; and in response to determining that the predetermined criteria are met, indicating detection of user-intended touch. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification