US 12,755,686 B2 · Dynamic display brightness control using facial detection via always-on camera to reduce smartphone power consumption

Abstract

Dynamically controlling the display brightness of a smartphone to reduce power consumption using facial detection via an always-on camera. The smartphone is equipped with a dedicated low-power always-on (AON) camera system that performs facial detection to determine whether the user is actively looking at the screen. When the user is not looking at the screen, the display brightness is automatically lowered to a preset level or by a percentage to reduce display power consumption. When the user's face is subsequently detected, the brightness is increased based on ambient light sensor readings. The AON camera system enables power optimization while also supporting instant face unlock, hands-free convenience features, and enhanced security. By dynamically adjusting the display brightness based on user engagement, battery life is significantly extended without compromising the user experience.

Claims18

Dependent claims

A method for dynamic control of display screen brightness of a smartphone, the method comprising:

detecting an idle mode trigger condition;
detecting, using an always-on (AON) camera system configured to perform facial detection of a user, if the user's face is looking at the display screen based on the idle mode trigger condition;
in response to detecting that the user's face is not looking at the display screen, automatically lowering the brightness of the display screen to a preset dimmer level that is based on a battery level of the smartphone;
and
in response to subsequently detecting that the user's face is looking at the display screen, automatically increasing the brightness of the display screen based on ambient light sensor readings, wherein automatically lowering the brightness to the preset dimmer level or automatically increasing the brightness based on the ambient light sensor reading are each based on a type of power supply providing energy to the smartphone and whether the user's face is looking at the display screen.

2 more elements

An apparatus, comprising:

a processing system that includes processor circuitry and memory circuitry that stores code, the processing system configured to cause the apparatus to:
detect an idle mode trigger condition;
detect, using an always-on (AON) camera system configured to perform facial detection of a user, if the user's face is looking at a display screen based on the idle mode trigger condition;
in response to detecting that the user's face is not looking at the display screen, automatically lower the brightness of the display screen to a preset dimmer level that is based on a battery level of a smartphone;
and
in response to subsequently detecting that the user's face is looking at the display screen, automatically increase the brightness of the display screen based on ambient light sensor readings, wherein automatically lowering the brightness to the preset dimmer level or automatically increasing the brightness based on the ambient light sensor reading are each based on a type of power supply providing energy to the smartphone and whether the user's face is looking at the display screen.

3 more elements

A multimedia device, comprising:

a display;
and
a processing system that includes processor circuitry and memory circuitry that stores code, the processing system configured to cause the multimedia device to:
detect an idle mode trigger condition;
detect, using an always-on (AON) camera system configured to perform facial detection of a user, if the user's face is looking at the display screen based on the idle mode trigger condition;
in response to detecting that the user's face is not looking at the display, automatically lower the brightness of the display to a preset dimmer level that is based on a battery level of a smartphone;
and
in response to subsequently detecting that the user's face is looking at the display, automatically increase the brightness of the display based on ambient light sensor readings, wherein automatically lowering the brightness to the preset dimmer level or automatically increasing the brightness based on the ambient light sensor reading are each based on a type of power supply providing energy to the smartphone and whether the user's face is looking at the display screen.

5 more elements

Dependencies are inferred from the claim text.

Dynamic display brightness control using facial detection via always-on camera to reduce smartphone power consumption

Life of this patent

Dynamic display brightness control using facial detection via always-on camera to reduce smartphone power consumption

Life of this patent

Abstract

Claims18