Compensated Refresh Rate Display Driving System
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Solution Overview
Problem
Conventional display devices face issues with frame drops and jitter due to refresh rate differences between display devices and host devices, as traditional hardware is limited in adjusting pixel clocks, resulting in error ranges that exceed the operational rate differences.
Innovation Solution
A system and method that compensates for pixel clock errors by modifying horizontal and vertical timing values to calculate a refreshed rate, allowing the display to be driven with a compensated refresh rate, which is calculated based on the actual pixel clock and error compensation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional hardware is used with fixed pixel clock adjustment capabilities, then device simplicity is maintained, but frame drops and jitter occur due to refresh rate mismatches between display and host devices
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the pixel clock frequency based on the detected refresh rate of the host device. The system calculates a compensated pixel clock value that accounts for the difference between the display's native refresh rate and the host device's operational refresh rate, thereby eliminating frame drops and jitter while maintaining manageable system complexity through software-based parameter adjustment
2Adaptability or versatility
If pixel clock error ranges of +/â0.5% are accepted, then hardware simplicity is maintained, but rate differences between display and host devices cannot be adequately accommodated
Solution Approach 1:
The patent implements feedback by detecting the actual refresh rate of the host device and using this information to calculate a compensated pixel clock. The system continuously monitors the refresh rate difference and adjusts the pixel clock accordingly, ensuring accurate synchronization between the display and host device regardless of the initial error range, thereby achieving high adaptability without requiring extremely precise hardware
3Reliability
If refresh rate compensation is implemented through timing value modification, then frame stability is improved, but calculation complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-calculating the compensated pixel clock value based on the detected refresh rate difference before the actual display operation begins. The system determines the appropriate timing values in advance and configures the display accordingly, which simplifies the real-time calculation requirements and improves visual data stability by ensuring proper synchronization from the start
Data Source
AI summary
A system, method, and computer program product are provided for driving a display utilizing a compensated refresh rate. In use, a pixel clock is received. The present technique compensates for an error associated with the pixel clock. Further, a refresh rate is calculated based on such compensation. To this end, a display may be driven utilizing the refresh rate.