Haptic interface for touch screen embodiments
First Claim
1. A method of outputting a periodic haptic effect on a touch screen comprising:
- processing an sensor signal from a sensor coupled to a touch screen;
outputting an activating signal to an actuator coupled to the touch screen to output at least a portion of a periodic haptic effect having a waveform characteristic, wherein the activating signal includes an envelope configured to shape the waveform characteristic with a predetermined magnitude of the haptic effect over time.
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Abstract
A haptic feedback touch control used to provide input to a computer. A touch input device includes a planar touch surface that provides position information to a computer based on a location of user contact. The computer can position a cursor in a displayed graphical environment based at least in part on the position information, or perform a different function. At least one actuator is also coupled to the touch input device and outputs a force to provide a haptic sensation to the user. The actuator can move the touchpad laterally, or a separate surface member can be actuated. A flat E-core actuator, piezoelectric actuator, or other types of actuators can be used to provide forces. The touch input device can include multiple different regions to control different computer functions.
257 Citations
5 Claims
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1. A method of outputting a periodic haptic effect on a touch screen comprising:
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processing an sensor signal from a sensor coupled to a touch screen;
outputting an activating signal to an actuator coupled to the touch screen to output at least a portion of a periodic haptic effect having a waveform characteristic, wherein the activating signal includes an envelope configured to shape the waveform characteristic with a predetermined magnitude of the haptic effect over time.
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2. A method of enhancing a haptic effect felt by a user comprising:
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sensing movement of a user'"'"'s finger in contact with a touch screen of an electronic device, wherein the sensed movement is from a first position to a second position in a first direction; and
outputting a haptic effect to the touch screen wherein the haptic effect is a directional force in a second direction opposite to the first direction.
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3. An actuator assembly for use with a touch screen in an electronic device, the actuator assembly comprising:
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a diaphragm coupled to the touch screen; and
an actuator coupled to the diaphragm, the actuator including a circular body having an upper surface and a lower surface, wherein the upper surface is proximal to the touch screen and having a mass positioned at the center of the upper surface; and
means for powering the actuator, wherein the actuator moves in a direction perpendicular to the touch screen to output a haptic effect to be felt by a user in contact with the housing.
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4. An communication device comprising:
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a housing;
a touch input device coupled to the housing and configured to receive a user'"'"'s input to manipulate a graphical object;
a displacement member positioned above the touch input device, the displacement member having a clear surface to allow the graphical object to be displayed therethrough;
an actuator directly coupled to the displacement member, the actuator configured to output a force to translate the displacement member in a desired direction, wherein the translation of the displacement member provides a haptic effect felt by the user in contact with the displacement member.
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5. A portable communication device comprising:
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a housing;
a touch screen coupled to the housing, the touch screen configured to output a graphical object therethrough to be displayed to a user;
a stylus configured to manipulate the graphical object;
a sensor configured to sense the stylus manipulating the graphical object and output a sensor signal associated with the manipulation;
a processor coupled to the sensor and configured to selectively output an activating signal in response to the sensor signal; and
an actuator configured to output a haptic effect to the stylus upon receiving the activating signal.
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Specification