Jul 1, 2025

US12347395 - Adaptive display backlight control system and method for controlling the backlight

An adaptive display backlight control system and a method for controlling the backlight are provided. The system includes a microcontroller unit, a human presence sensor, a human attention sensor and a backlight regulation module. The microcontroller unit determines a driving signal applied to a backlight module of a display according to a signal relating to if a person is present in front of the display as provided by the human-presence sensor, and a signal relating to if the person pays attention to the display as provided by the human attention sensor. Further, the microcontroller unit can obtain information of ambient light around the display from an ambient light sensor, and then relies on the information of ambient light to regulate the driving signal applied to the backlight module.

Assignee: Getac Technology Corporation
Inventors: Cheng-Liang Huang
Filing date: 2023-12-01

This patent describes an adaptive display backlight control system that utilizes a microcontroller unit, human presence and attention sensors, and a backlight regulation module to adjust the display’s backlight based on user interaction and ambient light conditions. The system aims to enhance user experience by optimizing visibility and energy efficiency depending on whether a person is present and paying attention to the display.

Claim 1

An adaptive display backlight control system, comprising: a microcontroller unit; a human presence sensor, electrically connected with the microcontroller unit, used to sense whether a person is in front of a display; a human attention sensor, electrically connected with the microcontroller unit, being implemented by an image sensor and an intelligence operator that defines an operating range in front of the display and determines whether the person in front of the display is paying attention to the display according to images captured by the image sensor within the operating range; and a backlight regulation module, electrically connected with the microcontroller unit, used to regulate a driving voltage of a backlight module of the display according to a backlight-regulation instruction generated by the microcontroller unit; wherein the microcontroller unit generates the backlight-regulation instruction being outputted to the backlight regulation module according to a signal generated by the human presence sensor relating to whether the person is present in front of the display and a signal generated by the human attention sensor relating to whether the person is paying attention to the display. a microcontroller unit; a human presence sensor, electrically connected with the microcontroller unit, used to sense whether a person is in front of a display; a human attention sensor, electrically connected with the microcontroller unit, being implemented by an image sensor and an intelligence operator that defines an operating range in front of the display and determines whether the person in front of the display is paying attention to the display according to images captured by the image sensor within the operating range; and a backlight regulation module, electrically connected with the microcontroller unit, used to regulate a driving voltage of a backlight module of the display according to a backlight-regulation instruction generated by the microcontroller unit; wherein the microcontroller unit generates the backlight-regulation instruction being outputted to the backlight regulation module according to a signal generated by the human presence sensor relating to whether the person is present in front of the display and a signal generated by the human attention sensor relating to whether the person is paying attention to the display.

Google Patents

https://patents.google.com/patent/US12347395

USPTO PDF

https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/12347395