Display Refresh Rate Selection for Monitor Limit Compatibility
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Solution Overview
Problem
Existing information processing apparatuses face challenges in developing programs that account for display monitors with limitations on refresh rate changes, leading to issues like stuttering and tearing, especially when the required display time periods exceed the monitor's limitations.
Innovation Solution
An information processing apparatus that selects either a fixed refresh rate or a variable refresh rate within the monitor's supported range using a prescribed limit range determination method, allowing it to control the display monitor effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a variable refresh rate is used to dynamically adjust display timing, then display smoothness is improved, but program development complexity increases due to monitor-specific limitations
Solution Approach 1:
The patent segments the refresh rate control into two independent components: the information processing apparatus generates video signals at variable refresh rates based on frame completion timing, while the display monitor independently manages its own refresh rate adjustments within manufacturer-defined limits. This segmentation allows each component to operate optimally without requiring the information processing apparatus to know specific monitor limitations, thereby improving display smoothness while simplifying program development.
2Reliability
If the display time period is extended to accommodate slow frame rendering, then frame completion reliability is improved, but display monitor compatibility decreases due to refresh rate change limitations
Solution Approach 1:
The patent implements dynamic refresh rate adjustment where the display monitor automatically adapts its refresh rate based on the actual frame completion timing from the information processing apparatus. The monitor dynamically changes refresh rates within manufacturer-defined limits to accommodate variable frame rendering times, ensuring frame completion reliability while maintaining compatibility across different display monitor models through standardized dynamic adjustment behavior.
3Ease of operation
If a fixed refresh rate is used to simplify control, then program development is simplified, but display smoothness deteriorates when frame rendering time varies
Solution Approach 1:
The patent enables the display monitor to autonomously manage refresh rate adjustments based on incoming video signal timing without requiring complex control logic in the information processing apparatus. The monitor self-adjusts its refresh rate within manufacturer-defined limits to match the variable frame completion timing, allowing simple program development while maintaining display smoothness through the monitor's own intelligent control mechanisms.
Data Source
AI summary
An information processing apparatus, which is connected to a display monitor and generates a video signal that is outputted to the display monitor and in which, in a case where a refresh rate for the display monitor is variable, one of a prescribed fixed refresh rate or a variable range that is for a variable refresh rate and is defined as a partial limited range from among a refresh range that the display monitor can support is selected by a prescribed limit range determination method, and the display monitor is controlled on the basis of the prescribed fixed refresh rate or the selected variable range pattern.