VERIFYING INPUT TO A TOUCH-SENSITIVE DISPLAY SCREEN ACCORDING TO TIMING OF MULTIPLE SIGNALS
First Claim
1. A method, comprising:
- detecting an impulse to a display screen using an impulse sensor coupled to the display screen;
detecting a touch to a touch-sensitive area of the display screen;
holding a sensor status for a predefined waiting period following the first of the detected impulse and the detected touch;
initiating a time window at the end of the predefined waiting period;
checking for the other of the impulse and the touch to occur during the time window; and
confirming an intended touch input in response to the other of the impulse and the touch having occurred during the time window.
1 Assignment
0 Petitions
Accused Products
Abstract
A system and method are disclosed for detecting and interpreting touch input to a touch-sensitive display screen, while identifying and excluding activity not intended as touch input. A positional sensor is used to obtain positional information of a touch to the display screen using a finger or stylus. Intended touch input is verified by sensing vibration, displacement, or other movement caused by an impulse to the display screen to verify that the activity is intended as touch input. Intended touch input is further verified by timing signals from the positional sensor and the impulse sensor to determine that these two signals likely resulted from intended touch input, and not from separate or unrelated activity not intended as touch input.
12 Citations
18 Claims
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1. A method, comprising:
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detecting an impulse to a display screen using an impulse sensor coupled to the display screen; detecting a touch to a touch-sensitive area of the display screen; holding a sensor status for a predefined waiting period following the first of the detected impulse and the detected touch; initiating a time window at the end of the predefined waiting period; checking for the other of the impulse and the touch to occur during the time window; and confirming an intended touch input in response to the other of the impulse and the touch having occurred during the time window. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A touch-sensitive input/output device, comprising:
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a display screen; an impulse sensor coupled to the display screen, the impulse sensor configured for detecting an impulse to the display screen and generating an impulse signal in response; a positional sensor configured for detecting a position of touch to the display screen and generating a positional signal in response; and a primary controller including control logic for holding a sensor status for a predefined waiting period following the first of the detected impulse and the detected touch, initiating a time window at the end of the predefined waiting period, checking for the other of the impulse and the touch to occur during the time window, and confirming an intended touch input in response to the other of the impulse and the touch having occurred during the time window. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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Specification