Adaptive Video Output Clocking for Stable, Low-Power Displays
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Solution Overview
Problem
Conventional display devices use a fixed video output clock frequency, leading to increased data throughput, core power ripple, heat generation, unstable operation, and high power consumption, which reduces the lifespan of the device.
Innovation Solution
The display device automatically adjusts the video output clock frequency based on input signals, detecting changes in resolution and tuning the frequency to optimize performance, using a processor to calculate and apply an optimal clock frequency for each input.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed video output clock frequency is used, then the display device can process content from various content providers, but the data throughput increases, core power ripple becomes large, chip temperature increases, and power consumption increases
Solution Approach 1:
The patent applies dynamics by transitioning from a fixed video output clock frequency to a dynamic, adaptive frequency setting mechanism. The processor automatically adjusts the video output clock frequency based on the resolution of the input signal, allowing the system to adapt its power consumption and performance characteristics to match the actual content requirements rather than operating at a constant high frequency for all scenarios
Solution Approach 2:
The patent implements parameter changes by modifying the video output clock frequency parameter according to the resolution parameter of the input signal. The system establishes a relationship between resolution levels and corresponding optimal clock frequencies, changing the frequency parameter dynamically to match the content being displayed, thereby reducing power consumption while maintaining compatibility with various content providers
2Reliability
If a fixed video output clock frequency is used, then the display device can maintain stable operation, but the chip temperature increases due to heat generation and the lifespan of the board decreases
Solution Approach 1:
The system dynamically adjusts the video output clock frequency based on actual display requirements, reducing the operating frequency when lower resolutions are detected. This dynamic adaptation maintains stable operation by ensuring the frequency is appropriate for the content while reducing heat generation and extending component lifespan through lower thermal stress
3Adaptability or versatility
If a fixed video output clock frequency is used, then the display device can process various resolutions, but the data throughput increases and the set becomes unstable
Solution Approach 1:
The patent changes the video output clock frequency parameter according to the resolution parameter of the input signal. By establishing a mapping between resolution levels and optimal frequency values, the system maintains stable operation at each resolution while preserving the ability to process various resolutions through this adaptive parameter adjustment mechanism
Data Source
AI summary
Disclosed are a display device and a method for operating the same. The display device includes a memory, a display, and a processor configured to set a first video output clock frequency for an input signal and output a video based on the set first video output clock frequency, wherein the processor is configured to set at least one second video output clock frequency, calculate an optimal video output clock frequency based on device performance information according to each set video output clock frequency and set the calculated optimal video output clock frequency as a video output clock frequency for the input signal.