Display Brightness Control via Touch Trace for Power Saving
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Solution Overview
Problem
Existing portable electronic devices face challenges in extending usage and standby time due to high power consumption, particularly from display usage, and current methods for controlling display power are either cumbersome or inconvenient, such as relying on mechanical buttons or timing modules.
Innovation Solution
A power saving method that allows users to directly select areas on a touch panel to adjust display brightness by defining start and end points, generating trigger signals based on touch traces, and adjusting the brightness of those areas, thereby simplifying mechanical design and operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a mechanical switching button is used to control display on/off, then the display power can be controlled, but the device complexity and manufacturing cost increase
Solution Approach 1:
The patent replaces the mechanical switching button with a touch-based control system. Users interact with the display by touching specific areas (e.g., status bar region) to trigger power saving mode, eliminating the need for physical buttons and reducing mechanical complexity while maintaining display power control functionality
Solution Approach 2:
The display itself serves as both the information display medium and the control interface. By touching the display area to activate power saving mode, the system uses its own component (the display) for dual purposes, eliminating the need for separate mechanical control elements
2Extent of automation
If a timing module with predetermined time period is used, then automatic power saving can be achieved, but the user cannot freely control the on/off condition of the display
Solution Approach 1:
The system transitions from static predetermined timing to dynamic user-controlled timing. Users can manually activate power saving mode by touching the display, and the system adapts to user needs rather than following a fixed schedule, providing both automation capability and user flexibility
Solution Approach 2:
The patent implements periodic power saving activation based on user interaction patterns. When users touch the display to activate power saving mode, the system periodically maintains this state until another user interaction occurs, combining automated state maintenance with user-initiated control
3Loss of information
If the entire display is kept bright, then all information is visible, but power consumption increases
Solution Approach 1:
The patent applies different brightness qualities to different regions of the display. When power saving mode is activated, only the touched area or specific regions (such as the status bar area) maintain visibility while other areas darken, allowing selective information preservation with reduced power consumption
Solution Approach 2:
The display is segmented into different functional regions with different brightness requirements. The system can darken non-essential areas while maintaining brightness in critical information areas, dividing the display into zones with different power consumption characteristics
Data Source
AI summary
A power saving method is provided. The power saving method is applicable to an electronic device including a display unit. The method comprises the steps of determining a start point on the display unit, determining whether the start point is located in a bright area of the display unit, receiving a signal corresponding to an end point on the display unit, generating a trigger signal according to the start point and the end point, and darkening the brightness of an area between the start point and the end point on the display unit according to the trigger signal.