Dynamic Image Data Evaluation Cycle for Power Reduction
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Solution Overview
Problem
Existing image supplying apparatuses face a high data evaluation burden when comparing image data for differences, leading to inefficient data transmission and power consumption, especially when there are no differences between data sets.
Innovation Solution
An image supplying apparatus that evaluates comparison result data at different intervals based on the presence or absence of differences between image data sets, reducing the frequency of evaluations and transmissions by delaying evaluations when no differences are found, thereby conserving power and reducing data transmission burdens.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the evaluation section evaluates comparison result data frequently to ensure real-time detection of image data differences, then the reliability of image data transmission is improved, but the evaluation burden and power consumption increase
Solution Approach 1:
The evaluation section dynamically adjusts the evaluation cycle based on the current state of image data comparison. When image data is determined to be unchanged, the evaluation cycle is extended; when changes are detected, the evaluation returns to a shorter cycle. This dynamic adjustment resolves the contradiction by maintaining real-time detection capability while reducing power consumption during periods of no change.
Solution Approach 2:
The system implements periodic evaluation of comparison result data with variable periods. The evaluation is performed at predetermined cycles, but these cycles are adaptively adjusted based on whether image data has changed. This periodic action with variable timing allows the system to maintain reliability while reducing the frequency of evaluations when unnecessary, thereby lowering power consumption.
2Productivity
If the evaluation section evaluates comparison result data at every predetermined cycle to ensure complete data transmission, then the productivity of image data supply is improved, but the evaluation burden increases
Solution Approach 1:
The evaluation section performs partial evaluation by selectively assessing comparison result data based on the need for image data transmission. When the display apparatus does not require image data (determined through evaluation), the system skips full evaluation and transmission processes. This partial action maintains productivity by performing evaluations only when necessary, while reducing the overall evaluation burden.
Solution Approach 2:
The system uses the evaluation of comparison result data to self-regulate its own operation. By determining whether image data has changed and whether transmission is needed, the system automatically adjusts its evaluation frequency and data supply behavior. This self-service mechanism resolves the contradiction by making the system productive only when necessary, thereby reducing unnecessary evaluation burden.
3Reliability
If the transmission section transmits image data frequently to ensure continuous display updates, then the reliability of image display is improved, but the data transmission burden and power consumption increase
Solution Approach 1:
The system extracts and transmits only the necessary image data based on comparison results. By evaluating whether image data has actually changed before transmission, the system removes unnecessary transmission operations. This extraction approach maintains reliable display updates by transmitting data only when changes occur, while significantly reducing energy loss associated with redundant data transmission.
Solution Approach 2:
The system discards (skips) image data transmission when comparison evaluation determines that no changes have occurred. By recovering (returning to normal operation) only when necessary changes are detected, the system maintains display reliability while avoiding the energy loss of transmitting unchanged data. This discarding and recovering mechanism optimizes the balance between reliable updates and energy conservation.
Data Source
AI summary
An terminal apparatus includes a terminal communication section that transmits image data to a projector, an image data generating section that generates comparison result image data representing a result of comparison between a post-update image data and a pre-update image data, and an evaluation section that evaluates whether or not the comparison result image data generated by the image data generating section represents that there is no difference between the pre-update image data and the post-update image data. The evaluation section evaluates the comparison result image data whenever a frame cycle elapses in a case where the comparison result image data represents that there is difference and evaluates the comparison result image data after a period longer than the frame cycle elapses in a case where the comparison result image data represents that there is no difference between the pre-update image data and the post-update image data.