Image Display System with Oxide Semiconductor Transistors
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Solution Overview
Problem
High-definition image display devices require increased power consumption due to the need for processing more data, leading to inefficiencies in energy usage.
Innovation Solution
An image display system comprising an imaging device with pixel blocks and a display device featuring transistors with oxide semiconductors, allowing for efficient data retention and reduced power consumption by switching between imaging modes based on object changes, thereby minimizing unnecessary data rewriting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If high-definition image processing is performed continuously, then image quality is improved, but power consumption increases
Solution Approach 1:
The imaging device dynamically switches between first mode (continuous high-definition imaging) and second mode (difference detection mode) based on whether object changes are detected. This dynamic operation mode adjustment allows the system to maintain high image quality when needed while reducing power consumption during static scenes, directly resolving the contradiction between image quality and power consumption.
Solution Approach 2:
The system changes operational parameters by switching between two distinct imaging modes: the first mode for full high-definition image acquisition and the second mode for change detection only. This parameter change approach enables the system to adapt power consumption levels according to the actual imaging requirements, resolving the contradiction between maintaining high image quality and reducing energy usage.
2Reliability
If image data is rewritten frequently, then image freshness is improved, but power consumption increases
Solution Approach 1:
The system employs periodic difference detection to determine whether image data rewriting is necessary. Instead of continuous rewriting, the imaging device periodically checks for object changes and only updates display data when changes are detected. This periodic action approach maintains image freshness reliability while significantly reducing the frequency of power-consuming rewrite operations.
Solution Approach 2:
The system uses feedback from difference detection results to control image data rewriting. The second mode detects whether objects have changed, and this feedback information determines whether the first mode should be activated for full image acquisition and rewriting. This feedback mechanism ensures image freshness is maintained only when necessary, reducing unnecessary power consumption from frequent rewrites.
3Use of energy by moving object
If difference detection mode is used, then power consumption is reduced, but image update responsiveness may be delayed
Solution Approach 1:
The system performs preliminary difference detection using the second mode to determine whether full image acquisition is necessary. This preliminary action allows the system to quickly identify static scenes and switch to low-power mode, while being prepared to immediately activate the first mode when changes are detected, thus maintaining responsiveness without continuous high-power operation.
Solution Approach 2:
The imaging device dynamically transitions between difference detection mode (second mode) and full imaging mode (first mode) based on detected object changes. This dynamic switching ensures that the system responds quickly to actual changes while spending most time in the lower-power detection mode, balancing power consumption with update responsiveness.
Data Source
AI summary
To provide an image display system in which an imaging device and a display device are combined. The image display system includes the imaging device including a plurality of pixel blocks and the display device including a plurality of display regions. Image data obtained in the first imaging mode is displayed on the display device as an image, and then, the imaging device switches to the second imaging mode to obtain data of whether an object is changed or not. If the object is changed, the imaging device switches to the first imaging mode, obtain image data newly, and then display the new image on the display device. If the object is not changed, display of the image stored in the display region is maintained and image rewriting is not performed.