Autonomous haptic stylus
First Claim
1. A stylus for use with a display screen which is touch-sensitive, the stylus comprising:
- a sensor positioned at an end of the stylus and configured to provide a plurality of sensor signals in response to the stylus contacting the display screen or being positioned within a threshold distance of the display screen,wherein the sensor comprises a force sensor responsive to changes in a physical surface texture of the display screen to provide one or more of the plurality of sensor signals responsive to the stylus being moved on the display screen,wherein the physical surface texture includes bumps arranged in a pattern on a surface of the display screen, andwherein the pattern is at least one of a random pattern, a pseudo random pattern, or a uniformly spaced pattern;
an actuator, within the stylus, configured to vibrate the stylus in response to a control signal;
a memory, within the stylus, containing operating instructions;
a processor, within the stylus and connected to the memory, to execute the operating instructions, and configured to;
determine a velocity of the stylus based on the one or more of the plurality of sensor signals responsive to the changes in the physical surface texture of the display screen; and
provide the control signal to the actuator based upon the velocity; and
a power supply, within the stylus, configured to provide operating power to at least the processor.
1 Assignment
0 Petitions
Accused Products
Abstract
An autonomous haptic stylus provides tactile feedback to a user writing or drawing on a smooth, uniform, touch-sensitive, glass display screen of a tablet, laptop computer, credit card point of sale device, or other device allowing a user to write or draw thereon. The stylus has an electrostatic detection sensor or a force/pressure sensor, which allows the stylus to detect certain characteristics of the display screen and to autonomously determine the position and/or velocity of the stylus on the display screen based on those characteristics. The position and/or velocity can be used to tailor the tactile feedback to the user. A display screen digitizer that provides driving signals for the row and column electrodes of a touch-sensitive display screen can be modified to transmit row and column information over the electrodes to allow a stylus to determine its position.
56 Citations
22 Claims
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1. A stylus for use with a display screen which is touch-sensitive, the stylus comprising:
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a sensor positioned at an end of the stylus and configured to provide a plurality of sensor signals in response to the stylus contacting the display screen or being positioned within a threshold distance of the display screen, wherein the sensor comprises a force sensor responsive to changes in a physical surface texture of the display screen to provide one or more of the plurality of sensor signals responsive to the stylus being moved on the display screen, wherein the physical surface texture includes bumps arranged in a pattern on a surface of the display screen, and wherein the pattern is at least one of a random pattern, a pseudo random pattern, or a uniformly spaced pattern; an actuator, within the stylus, configured to vibrate the stylus in response to a control signal; a memory, within the stylus, containing operating instructions; a processor, within the stylus and connected to the memory, to execute the operating instructions, and configured to; determine a velocity of the stylus based on the one or more of the plurality of sensor signals responsive to the changes in the physical surface texture of the display screen; and provide the control signal to the actuator based upon the velocity; and a power supply, within the stylus, configured to provide operating power to at least the processor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A memory having operating instructions stored thereupon that, when executed by a processor in a stylus, cause the processor to:
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receive a plurality of sensor signals from a sensor in the stylus, the sensor being at an end of the stylus which is adapted to be placed into contact with a display screen which is touch-sensitive or placed within a threshold distance of the display screen, wherein the sensor comprises a force sensor responsive to changes in a physical surface texture of the display screen to provide one or more of the plurality of sensor signals responsive to the stylus being moved on the display screen, wherein the physical surface texture includes bumps arranged in a pattern on a surface of the display screen, and wherein the pattern is at least one of a random pattern, a pseudo random pattern, or a uniformly spaced pattern; determine a velocity of the stylus based on the one or more of the plurality of sensor signals responsive to the changes in the physical surface texture of the display screen; and provide a control signal, based upon the velocity, to an actuator in the stylus to cause the actuator to vibrate the stylus. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification