Biometric imaging with hover detection
AssigneeSynaptics Incorporated
InventorsMohamed Sheik-Nainar, Justin Mockler, Adam L. Schwartz, Erik Jonathon Thompson
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Abstract
A method and system for fingerprint imaging in an electronic device having a display, a touch sensor with a touch interface and an optical fingerprint sensor with a sensing region is described. The method and system include placing the electronic device in a hover detect mode, the hover detect mode scanning for a hovering finger; detecting the hovering finger; initiating illumination in the sensing region to image a fingerprint of the finger; capturing an image of the fingerprint in the sensing region; and disabling the illumination in the sensing region.
Claims33
A method of imaging a fingerprint of a finger in an electronic device including a display, a touch sensor having a touch interface, and an optical fingerprint sensor having a sensing region, the method comprising:
- placing the electronic device in a hover detect mode, the hover detect mode scanning for the finger hovering proximate to the touch interface;
- detecting the finger while the finger is hovering;
- initiating illumination in the sensing region;
- capturing an image of the fingerprint of the finger in the sensing region;
- and
- disabling the illumination in the sensing region.
An electronic device, comprising:
- a memory;
- and
- one or more processors in communication with the memory, wherein the one or more processors are configured to:
- operate the electronic device in a hover detect mode, the hover detect mode scanning for a finger hovering proximate to a touch interface;
- receive a signal when the finger hovering proximate to the touch interface is detected;
- initiate illumination in a sensing region of an optical sensor;
- receive image data corresponding to an image of a fingerprint of the finger from the sensing region;
- and
- disable the illumination in the sensing region.
An electronic device, comprising:
- a memory;
- and
- a touch controller in communication with the memory, configured to:
- operate in a hover detect mode, the hover detect mode scanning for a finger hovering proximate to a touch interface;
- detect the finger while the finger is hovering proximate to the touch interface;
- first signal that the finger has been detected to initiate illumination in a sensing region of an optical sensor;
- second signal to disable the illumination in the sensing region after capturing an image of a fingerprint of the finger.
Dependencies are inferred from the claim text.