Video Display Signal Processing CPU Load Reduction
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Solution Overview
Problem
In video display systems processing high-resolution images, the central processing unit (CPU) experiences excessive load when monitoring multiple parallel video signals, leading to slow user response times due to the need for frequent monitoring of synchronization and other signal information.
Innovation Solution
A video display apparatus and method that includes an input unit for receiving divided video signals, a video signal processing unit for combining images, and a control unit that acquires and thins out signal information, prioritizing the processing of signal information for some signals over others to reduce the CPU's workload.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the CPU monitors all signal information for all divided video signals in parallel, then the system ensures complete signal verification and reliability, but the CPU load becomes excessive and response time increases
Solution Approach 1:
The patent segments the monitoring task by dividing video signals into multiple groups (first group and second group). The CPU monitors signal information for only one group at a time, alternating between groups in different cycles. This segmentation reduces the number of signals monitored simultaneously, lowering CPU load and improving response time while maintaining complete verification of all signals over time.
Solution Approach 2:
The patent implements periodic monitoring where the CPU alternates between monitoring different groups of divided video signals in different cycles. In each cycle, the CPU focuses on a specific group, creating a periodic pattern of monitoring that distributes the monitoring load over time. This periodic approach ensures all signals are verified periodically without overwhelming the CPU in any single cycle.
2Loss of information
If the CPU monitors multiple divided video signals simultaneously, then comprehensive signal information is acquired, but the processing complexity and CPU load increase significantly
Solution Approach 1:
The patent divides divided video signals into multiple groups and segments the monitoring process accordingly. The CPU processes signal information for one group at a time rather than all signals simultaneously. This segmentation reduces the complexity of concurrent processing while ensuring that signal information from all groups is eventually acquired and processed, just in a distributed manner across multiple monitoring cycles.
3Manufacturing precision
If the system processes all divided video signals with equal monitoring, then uniform processing quality is maintained, but the overall processing speed and efficiency decrease
Solution Approach 1:
The patent employs periodic action by alternating the CPU's monitoring focus between different groups of divided video signals in successive cycles. While the CPU processes one group at a time (maintaining uniform processing quality for the active group), the periodic switching enables parallel progress through different signal groups, thereby increasing overall processing throughput and efficiency without sacrificing processing uniformity within each group.
Data Source
AI summary
A video display apparatus includes: an inputter that receives an input of divided video signals representing divided images obtained by dividing an output image and acquires signal information for each of the divided video signals; a video signal processor that applies processing to the divided video signals and generates an output video signal representing an image obtained by combining the divided images; a controller that acquires the signal information from the inputter and supplies a control signal relating to the processing to the video signal processor; and a display that displays the image represented by the output video signal, and the number of kinds of signal information acquired by the controller with respect to some divided video signals among the divided video signals is greater than the number of kinds of signal information acquired by the controller with respect to the other divided video signals.