Image sensing with a display
First Claim
1. An imaging system comprising:
- a cover glass having a display surface;
a pixelated photoemitting element array, one or more selected photoemitting elements of the pixelated photoemitting element array being configured to emit a light signal through the cover glass to the display surface; and
a pixelated photodetecting element array positioned relative to the pixelated photoemitting element array and the cover glass to receive a reflected light signal at individual photodetecting elements of the pixelated photodetecting element array, the reflected light signal including a portion of the emitted light signal reflected by total internal reflection from a refractive boundary at the display surface of the cover glass; and
wherein the reflected light signal includes a non-feature portion of the emitted light signal resulting from total internal reflection from the refractive boundary at the display surface of the covered glass.
2 Assignments
0 Petitions
Accused Products
Abstract
An electronic device includes a cover glass having a display surface, a pixelated photoemitting element array, and a pixelated photodetecting element array. The pixelated photoemitting element array emits a light signal through the cover glass to the display surface. The pixelated photodetecting element array is positioned relative to the pixelated photoemitting element array and the cover glass to receive a reflected light signal. The reflected light signal includes a portion of the emitted light signal reflected by total internal reflection from a refractive boundary at the display surface. Operation of each pixel is switched between the one or more photodetecting elements and the one or more photoemitting elements by the pixel selector signal component received from the pixel selector signal bus. A sensing trigger is configured to trigger the imaging scan by the pixelated photoemitting element array and the pixelated photodetecting element array, responsive to detection of an initiating action.
78 Citations
22 Claims
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1. An imaging system comprising:
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a cover glass having a display surface; a pixelated photoemitting element array, one or more selected photoemitting elements of the pixelated photoemitting element array being configured to emit a light signal through the cover glass to the display surface; and a pixelated photodetecting element array positioned relative to the pixelated photoemitting element array and the cover glass to receive a reflected light signal at individual photodetecting elements of the pixelated photodetecting element array, the reflected light signal including a portion of the emitted light signal reflected by total internal reflection from a refractive boundary at the display surface of the cover glass; and wherein the reflected light signal includes a non-feature portion of the emitted light signal resulting from total internal reflection from the refractive boundary at the display surface of the covered glass. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method comprising:
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emitting a light signal through a cover glass of a display to a display surface of the display, the light signal being emitted from one or more selected photoemitting elements of a pixelated photoemitting element array of the display; and capturing a reflected light signal at individual photodetecting elements of a pixelated photodetecting element array positioned relative to the pixelated photoemitting element array and the cover glass to receive the reflected light signal, the reflected light signal including a portion of the emitted light signal reflected by total internal reflection from a refractive boundary at the display surface of the cover glass; and wherein the reflected light signal includes a non-feature portion of the emitted light signal resulting from total internal reflection from the refractive boundary at the display surface of the covered glass. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. An electronic device comprising:
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a cover glass having a display surface; a pixelated photoemitting element array, one or more selected photoemitting elements of the pixelated photoemitting element array being configured to emit a light signal through the cover glass to the display surface; a pixelated photodetecting element array positioned relative to the pixelated photoemitting element array and the cover glass to receive a reflected light signal at individual photodetecting elements of the pixelated photodetecting element array, the reflected light signal including a portion of the emitted light signal reflected by total internal reflection from a refractive boundary at the display surface of the cover glass; and image processing circuitry electrically coupled to the pixelated photoemitting element array and the pixelated photodetecting element array and configured to stitch the reflected light signal received by each photodetecting element of the pixelated photodetecting element array into a composite image of an object in contact with the display surface of the display; and
wherein the reflected light signal includes a non-feature portion of the emitted light signal resulting from total internal reflection from the refractive boundary at the display surface of the covered glass. - View Dependent Claims (20, 21, 22)
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Specification