Display Apparatus Dynamic Scan Rate Data Rate Control
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Solution Overview
Problem
Gaming display apparatuses consume high power even when a low scan rate is input, as they are typically controlled with specifications set based on the maximum scan rate.
Innovation Solution
A display apparatus that adjusts the data rate of a digital image signal transmitted between driving elements according to the input scan rate, by controlling the scaler or timing controller to match the driving scan rate of the liquid crystal panel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the display apparatus is controlled with specifications set based on the maximum scan rate, then the display apparatus can handle high scan rate content, but the power consumption increases even when low scan rate content is input
Solution Approach 1:
The patent applies dynamics by making the data rate of digital image signals transmitted between driving elements variable rather than fixed. The system dynamically adjusts the data rate based on the actual scan rate of the input content, allowing the display apparatus to adapt its operational parameters to match the incoming signal characteristics, thereby reducing power consumption when low scan rate content is displayed while maintaining compatibility with high scan rate content
Solution Approach 2:
The patent implements parameter changes by modifying the data rate parameter of digital image signals according to the scan rate parameter of the input content. The controller adjusts the data rate to correspond to the actual scan rate being used, changing the operational parameters of the driving elements (scaler, timing controller, source driver) to match the content requirements, which resolves the contradiction between maintaining high scan rate capability and reducing power consumption at lower scan rates
2Use of energy by moving object
If the data rate of digital image signals is adjusted according to the driving scan rate, then the power consumption is minimized, but the system complexity increases due to additional control mechanisms
Solution Approach 1:
The patent applies feedback by implementing a control mechanism that monitors the scan rate of input content and uses this information to adjust the data rate of digital image signals transmitted to driving elements. The controller receives feedback about the actual scan rate being used and dynamically modifies the operational parameters accordingly, enabling power optimization through adaptive control without requiring complex manual configuration or multiple fixed-mode systems
3Use of energy by moving object
If the clock speed of integrated chip elements is optimized based on the driving scan rate, then power usage is reduced, but the manufacturing precision requirements increase
Solution Approach 1:
The patent implements parameter changes by adjusting the clock speed parameter of integrated chip elements (scaler, timing controller, source driver) based on the driving scan rate parameter. By changing the clock speed to match the actual content requirements rather than maintaining a fixed maximum clock speed, the system reduces power consumption while the precision requirements are managed through standard digital clocking mechanisms and control logic
Data Source
AI summary
Provided is a display apparatus including: a liquid crystal panel; a source driver configured to output a grayscale voltage to the liquid crystal panel; a timing controller configured to transmit a source control signal to the source driver; a scaler configured to transmit image data corresponding to content received from an external source to the timing controller; and a controller configured to adjust a driving scan rate of the liquid crystal panel to correspond to a set scan rate of the content, and control at least one of the scaler or the timing controller to adjust a data rate of an output signal based on the driving scan rate.