Display Brightness Adjustment via Face Image Analysis
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Solution Overview
Problem
Existing display systems in electronic devices, such as mobile phones and tablets, fail to accurately adjust backlight intensity based on the ambient brightness perceived by the user's eyes, leading to unsuitable viewing conditions, especially in environments where intense light, like sunlight, is present but not detected by the device's light sensor.
Innovation Solution
Incorporating a processing circuit and a timing controller circuit that analyzes images of the user's face to obtain light perception adjustment information, allowing for dynamic adjustment of frame data or display characteristics, such as backlight intensity, to match the user's perceived light conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the light sensor detects ambient brightness to adjust backlight intensity, then the display can adapt to general lighting conditions, but it fails to accurately reflect the user's actual perceived brightness when intense light is present but not detected by the sensor
Solution Approach 1:
The patent introduces a camera as an intermediary device to capture images of the user's face, which then serves as the basis for determining perceived brightness. The processing circuit analyzes the captured images to infer the lighting conditions the user is experiencing, effectively using the camera as a mediator between the physical light environment and the display adjustment system.
Solution Approach 2:
The patent replaces the traditional light sensor-based detection mechanism with an image processing-based approach. Instead of relying on a light sensor to directly measure ambient brightness, the system uses a camera to capture visual information and a processing circuit to analyze the user's face image, substituting optical-mechanical detection with computational image analysis.
2Use of energy by moving object
If the backlight intensity is dimmed based on low ambient brightness detected by the light sensor, then energy consumption is reduced, but the user experiences difficulty viewing displayed contents when the user's eyes are in a bright environment
Solution Approach 1:
The patent implements a feedback mechanism where the processing circuit continuously analyzes images of the user's face to determine perceived brightness, and this information feeds back to the timing controller circuit to adjust the backlight intensity accordingly. This closed-loop feedback ensures the display adapts to the user's actual viewing conditions rather than following a simple light sensor reading.
Solution Approach 2:
The patent dynamically changes the backlight intensity parameter based on the analysis of the user's face image. The timing controller circuit adjusts display parameters including backlight intensity in response to the determined perceived brightness, allowing the system to optimize both energy consumption and viewing comfort by adapting to real-time conditions.
Data Source
AI summary
A display system, an electronic apparatus and a display adjustment method thereof are provided. The electronic apparatus comprises a display panel, a timing controller circuit and a processing circuit. The display adjustment method of the electronic apparatus comprising: processing, by the timing controller circuit, frame data to be displayed by the display panel; analyzing, by the processing circuit, an image including a face of a person, and comparing an average luminance value of the face area with a threshold to obtain adjustment information with respect to the light perceived by the face; and correspondingly adjusting, by the timing controller circuit, the frame data or at least one display characteristics associated with the frame data according to the adjustment information. Furthermore, the display system comprises the processing circuit for one electronic apparatus, and the display panel and the timing controller for another electronic apparatus.