Display Lighting Control for Power Reduction in Terminal Devices
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Terminal apparatuses with transmission-type liquid crystal panels consume substantial power when in a dim-lighting state for extended periods, especially due to frequent lighting and dimming events caused by interrupt events like incoming calls and news notifications, leading to unnecessary power consumption.
Innovation Solution
A terminal apparatus with an event detection unit, lighting detection unit, and lighting control unit that manages the display unit's brightness by switching between lighting, dim-lighting, and unlighted states based on detected events and display states, allowing for controlled power savings by adjusting lighting times and states accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the display unit remains in dim-lighting state for extended periods to allow user viewing, then user convenience is improved, but power consumption increases substantially
Solution Approach 1:
The patent applies dynamics by making the lighting state adjustable and adaptable rather than fixed. The control unit dynamically switches between dim-lighting and unlighted states based on detected user input events, allowing the system to adapt its power consumption characteristics to actual usage conditions while maintaining user convenience when needed.
Solution Approach 2:
The patent implements periodic action by using interrupt events to trigger transitions between lighting states. Instead of continuous dim-lighting, the system periodically switches to unlighted state after detecting user input, creating a rhythm of active and inactive periods that reduces overall power consumption while still providing visibility when users interact with the device.
2Speed
If lighting and dimming operations are performed frequently in response to interrupt events, then responsiveness to user events is improved, but power consumption increases due to repeated state changes
Solution Approach 1:
The patent applies dynamics by implementing adaptive lighting control that responds to user behavior patterns. The control unit learns from interrupt events and dynamically adjusts lighting duration and intensity, providing responsive behavior when users interact with the device while reducing unnecessary lighting operations during periods of no interaction, thereby balancing responsiveness with power conservation.
Data Source
AI summary
A terminal apparatus and a computer-readable storage medium capable of achieving reduction of power consumption by appropriately controlling lighting of a display unit are provided.A CPU lights or extinguishes a display unit after the end of an interrupt event in accordance with a lighting state (lighting, dim-lighting, being unlighted) of the display unit when the occurrence of the interrupt event is detected. It is therefore possible for the CPU to perform appropriate display control according to the lighting state when an interrupt event occurs.