US 12,347,395 B2Granted

Adaptive display backlight control system and method for controlling the backlight

AssigneeGetac Technology Corporation

InventorCheng-Liang Huang

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Abstract

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.

Claims17

Dependent claims

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.

3 more elements

A method for adaptively controlling a backlight of a display, performed in a microcontroller unit, comprising:

determining whether a person is in front of the display by a human presence sensor;
determining whether the person is paying attention to the display by a human attention sensor;
and
generating, by the microcontroller unit, a backlight-regulation instruction being outputted to a 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, so as to enable the backlight regulation module to regulate a driving voltage being outputted to a backlight module of the display according to the backlight-regulation instruction;
wherein the human attention sensor is implemented by an image sensor and an intelligence operator, and the intelligence operator defines an operating range in front of the display and determines whether the person is paying attention to the display according to images captured by the image sensor within the operating range.

2 more elements

A method for adaptively controlling a backlight of a display, performed in a microcontroller unit, comprising:

determining whether a person is in front of the display by a human presence sensor;
determining whether the person is paying attention to the display by a human attention sensor;
and
generating, by the microcontroller unit, a backlight-regulation instruction being outputted to a 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, so as to enable the backlight regulation module to regulate a driving voltage being outputted to a backlight module of the display according to the backlight-regulation instruction;
wherein the human attention sensor is implemented by an image sensor and an intelligence operator, and the intelligence operator performs an eyeball-tracking process according to images before the display captured by the image sensor and determines whether the person is paying attention to the display according to a result of the eyeball-tracking process.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/526,145Filed 1 Dec 2023 · us provisional application
Priority: 18 Jul 2023
Published: US 2025/0029568 A123 Jan 2025
Granted: 1 Jul 2025
Term ends: Not estimatedThe source records don’t support an estimate.

Classification34 codes

H04N 7/18
Television systems: closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
H04N 23/667
Control of cameras or camera modules: camera operation mode switching, e.g. between still and video, sport and normal or high- and low-resolution…
F41C 33/029
Holsters, i.e. cases for pistols having means for being carried or worn, e.g. at the belt or under the arm: combined with electronic devices, e.g. GPS
G06F 1/3231
Monitoring of events, devices or parameters that trigger a change in power modality: monitoring the presence, absence or movement of users