System and method for detecting grip of a touch enabled device
First Claim
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1. A device comprising:
- a front face and a back face, the back face opposite the front face;
a display on the front face of the device;
a controller configured to control the display;
a grid based capacitive sensor integrated with the display, wherein the sensor is configured to sense touch input on the display; and
a circuit in communication with the sensor, the circuit configured to;
perform mutual capacitive detection based on scanning one axis of the grid based capacitive sensor;
detect a heatmap based on the mutual capacitive detection;
identify a thumb or palm on a pre-defined portion of the display based on the heatmap;
detect capacitance (CBD) between the user and the device based on the heatmap;
identify that a user is touching the back face of the device based on accumulated averages of the CBD being above a pre-defined threshold, wherein the accumulated averages are accumulated over a plurality of refresh cycles of the sensor including refresh cycles during which the thumb or palm is on the pre-defined portion of the display;
detect that the user is gripping the device based on identifying the thumb or palm on the pre-defined portion of the display and based on detecting when the user is touching the back face of the device; and
report the gripping detected to the controller.
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Abstract
A device includes a display, a controller configured to control the display, a sensor integrated with the display and a circuit a circuit in communication with the sensor. The sensor is configured to sense touch input and the circuit is configured to detect when a user is gripping the device only based on output from the sensor and a pre-defined model. Gripping is reported to the controller.
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Citations
14 Claims
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1. A device comprising:
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a front face and a back face, the back face opposite the front face; a display on the front face of the device; a controller configured to control the display; a grid based capacitive sensor integrated with the display, wherein the sensor is configured to sense touch input on the display; and a circuit in communication with the sensor, the circuit configured to; perform mutual capacitive detection based on scanning one axis of the grid based capacitive sensor; detect a heatmap based on the mutual capacitive detection; identify a thumb or palm on a pre-defined portion of the display based on the heatmap; detect capacitance (CBD) between the user and the device based on the heatmap; identify that a user is touching the back face of the device based on accumulated averages of the CBD being above a pre-defined threshold, wherein the accumulated averages are accumulated over a plurality of refresh cycles of the sensor including refresh cycles during which the thumb or palm is on the pre-defined portion of the display; detect that the user is gripping the device based on identifying the thumb or palm on the pre-defined portion of the display and based on detecting when the user is touching the back face of the device; and report the gripping detected to the controller. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method comprising:
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performing mutual capacitive detection based on scanning one axis of a grid based capacitive sensor integrated with a display of a device, wherein the display occupies at least a portion of a first surface of the device, wherein the first surface is opposite a second surface of the device, and wherein the sensor is configured to sense touch input on the display; detecting when the user is touching a pre-defined portion of the display with a thumb or palm based on a heatmap determined from the mutual capacitive detection; detecting capacitance (CBD) between the user and the device based on the heatmap; detecting when the user is touching the second surface of the device based on accumulated averages of the CBD being above a pre-defined threshold, wherein the accumulated averages are accumulated over a plurality of refresh cycles of the sensor including refresh cycles during which the thumb or palm is on the pre-defined portion of the display; detecting that the user is gripping the device based on identifying the thumb or palm on the pre-defined portion of the display and based on detecting when the user is touching the back face of the device; and reporting the gripping detected to a controller of the device. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
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Specification