Input device haptics and pressure sensing
First Claim
1. An input device comprising:
- an outer surface configured to receive an application of a pressure by an object;
one or more pressure sensing and haptic feedback mechanisms comprising a piezo, the piezo configured to;
sense an amount of the pressure applied to the outer surface by the object;
generate a pressure signal corresponding to the amount of the pressure; and
produce a haptic effect at the outer surface when energized; and
a pressure sensing and haptic feedback module configured to;
store a voltage value from the piezo, the voltage value based on deflection of the piezo from the pressure by the object on the outer surface;
discharge, after storing the voltage value, a capacitance of the piezo based on pressure on the piezo occurring for a defined amount of time; and
apply, in association with discharging the capacitance of the piezo, the voltage value as a pressure reading for the piezo.
1 Assignment
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Accused Products
Abstract
Input device haptics and pressure sensing techniques are described. An input device includes an outer surface, a pressure sensor and haptic feedback mechanism, and a pressure sensing and haptic feedback module. The outer surface is configured to receive an application of pressure by an object. The pressure sensor and haptic feedback mechanism has one or more piezos configured to detect and quantify an amount of the application of the pressure to the outer surface by the object, the one or more piezos configured to output a signal indicating the quantified amount of the pressure. The pressure sensing and haptic feedback module is configured to receive the signal from the one or more piezos indicating the quantified amount of the pressure and control the haptic feedback of the pressure sensor and haptic feedback mechanism.
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Citations
20 Claims
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1. An input device comprising:
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an outer surface configured to receive an application of a pressure by an object; one or more pressure sensing and haptic feedback mechanisms comprising a piezo, the piezo configured to; sense an amount of the pressure applied to the outer surface by the object; generate a pressure signal corresponding to the amount of the pressure; and produce a haptic effect at the outer surface when energized; and a pressure sensing and haptic feedback module configured to; store a voltage value from the piezo, the voltage value based on deflection of the piezo from the pressure by the object on the outer surface; discharge, after storing the voltage value, a capacitance of the piezo based on pressure on the piezo occurring for a defined amount of time; and apply, in association with discharging the capacitance of the piezo, the voltage value as a pressure reading for the piezo. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A trackpad system comprising:
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an outer surface configured to receive an application of a pressure by an object and detect movement of the object in relation to the outer surface, the detected movement usable to provide input to a computing device; one or more pressure sensing and haptic feedback mechanisms comprising a piezo, the piezo configured to; sense an amount of the pressure applied to the outer surface by the object; generate a pressure signal corresponding to the amount of the pressure; and produce a haptic effect at the outer surface when energized; and a pressure sensing and haptic feedback module configured to; store a voltage value from the piezo, the voltage value based on deflection of the piezo from the pressure by the object on the outer surface; discharge, after storing the voltage value, a capacitance of the piezo based on pressure on the piezo occurring for a defined amount of time; and apply, in association with discharging the capacitance of the piezo, the voltage value as a pressure reading for the piezo. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A method comprising:
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controlling one or more piezos to; sense an amount of a pressure applied by an object to an outer surface of an input device in which the one or more piezos are disposed; generate a pressure signal corresponding to the amount of the pressure; produce a haptic effect at the outer surface responsive to the one or more piezos being energized; and controlling a pressure sensing and haptic feedback module to; store a voltage value from the piezo, the voltage value based on deflection of the piezo from the pressure by the object on the outer surface; discharge, after storing the voltage value, a capacitance of the piezo based on pressure on the piezo occurring for a defined amount of time; and apply, in association with discharging the capacitance of the piezo, the voltage value as a pressure reading for the piezo. - View Dependent Claims (17, 18, 19, 20)
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Specification