METHOD AND APPARATUS FOR DETECTING HOLD CONDITION ON AN ACOUSTIC TOUCH SURFACE
First Claim
Patent Images
1. A bending wave touch system, comprising:
- at least one sensor coupled to a substrate and responsive to vibrations in the substrate, the at least one sensor outputting signals; and
a controller configured to receive the signals from the at least one sensor, the controller further configured to identify touch coordinates based on high frequency components of the signals when a touch on the substrate comprises at least one of a tap, a drag and a lift-off, the controller further configured to identify a status of a hold condition of the touch based on at least two different time averages of low frequency components of the signals.
13 Assignments
0 Petitions
Accused Products
Abstract
A bending wave touch system includes at least one sensor and a touchscreen controller. The at least one sensor is coupled to a substrate and is responsive to vibrations in the substrate. The at least one sensor outputs signals. The controller receives the signals from the at least one sensor and identifies touch coordinates based on high frequency components of the signals when a touch on the substrate includes at least one of a tap, a drag and a lift-off. The controller identifies a status of a hold condition of the touch based on at least two different time averages of low frequency components of the signals.
-
Citations
21 Claims
-
1. A bending wave touch system, comprising:
-
at least one sensor coupled to a substrate and responsive to vibrations in the substrate, the at least one sensor outputting signals; and a controller configured to receive the signals from the at least one sensor, the controller further configured to identify touch coordinates based on high frequency components of the signals when a touch on the substrate comprises at least one of a tap, a drag and a lift-off, the controller further configured to identify a status of a hold condition of the touch based on at least two different time averages of low frequency components of the signals. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A method for identifying a hold condition on a bending wave touch panel, comprising:
-
detecting signals with at least one sensor bonded with a substrate, the signals indicative of vibrations on the substrate of a bending wave touch panel; identifying at least one of a tap and a drag based on the signals; calculating two different time averages based on low frequency components of the signals; and identifying a hold condition following the at least one of the tap and the drag based on amplitude levels of the two different time averages. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
-
-
17. A method for determining touch coordinates on a bending wave touch surface, comprising:
-
detecting signals with at least two sensors bonded with the bending wave touch surface, the signals indicative of vibrations on the bending wave touch surface; low pass filtering the signals to pass low frequency components below 100 Hz; and determining the touch coordinates of a single touch on the touch surface based on ratios of the low frequency components. - View Dependent Claims (18, 19, 20, 21)
-
Specification