| CPC G06V 40/1318 (2022.01) [G09G 3/3208 (2013.01); G09G 2320/0633 (2013.01); G09G 2320/064 (2013.01)] | 10 Claims |
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1. A computer-implemented method comprising:
receiving user input at a display of an electronic device;
initiating biometric authentication at the electronic device;
responsive to initiating biometric authentication:
instructing a display-driver integrated circuit of the electronic device to implement a local high-brightness mode, the local high-brightness mode configured to cause a predetermined portion of the display to increase in luminance to a target luminance for at least a first interval and a second interval, a luminosity of the predetermined portion of the display being lower for the first interval than the second interval due to a response delay;
instructing, based on a location of the user input, the display-driver integrated circuit to cause a variable portion of the display to increase in luminance for the first interval, the increase in luminance from the variable portion sufficient to cause a total luminance from the predetermined portion and the variable portion to be approximately equal to or greater than the target luminance for the first interval;
directing an under-display fingerprint sensor to capture one or more images of the user input at the display of the electronic device during at least the first interval;
instructing, at the expiration of the first interval, the display-driver integrated circuit to cause the variable portion of the display to decrease in luminance and the predetermined portion of the display to illuminate at the target luminance;
analyzing the one or more images of the user input captured during the first interval; and
determining, based on the analysis of the one or more images, whether the user input is indicative of an authorized user.
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