Display Device Image Processing Circuit Power Switching
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Solution Overview
Problem
Conventional display devices consume excessive power during image processing operations, especially when luminance enhancement is not intended by the user, leading to unnecessary energy usage.
Innovation Solution
A display device with an image processing unit that includes a first processing circuit to limit colors to 16 or fewer and a second processing circuit for luminance enhancement, along with a switching unit to selectively use either circuit for power-saving image processing, allowing the first circuit to perform processing when power savings are needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the second processing circuit performs image processing to improve luminance, then display quality is improved, but power consumption increases
Solution Approach 1:
The system dynamically switches between two processing circuits based on operational needs. The switching unit selects the first processing circuit for power-saving operation and the second processing circuit for luminance enhancement, making the system adaptable to different power quality requirements rather than being fixed in one mode
Solution Approach 2:
The system changes the processing mode parameter by switching between two distinct processing circuits. The first circuit uses simple color replacement with limited colors (≤16) for low power consumption, while the second circuit performs arithmetic processing for luminance improvement, allowing parameter-based optimization of power vs. quality
2Use of energy by moving object
If the first processing circuit is used to save power, then power consumption is reduced, but image quality deteriorates
Solution Approach 1:
The switching unit enables dynamic adaptation between power-saving mode (first circuit) and quality mode (second circuit), allowing the system to optimize for power consumption when luminance requirements are minimal while maintaining the capability to switch to high-quality processing when needed
Solution Approach 2:
The first processing circuit uses a simplified, less resource-intensive approach (color replacement with ≤16 colors) that consumes less power, accepting reduced image quality as a temporary trade-off that can be resolved by switching to the second circuit when quality is prioritized
3Illumination intensity
If luminance enhancement processing is always performed, then display quality is maintained, but unnecessary power is consumed when users do not expect luminance improvement
Solution Approach 1:
The switching unit introduces dynamic control that adapts processing intensity to user expectations and environmental conditions. Instead of always performing luminance enhancement, the system can switch to the first processing circuit when users do not expect luminance improvement, eliminating unnecessary power consumption while maintaining quality when needed
Solution Approach 2:
The system changes the processing parameter from fixed luminance enhancement to variable processing mode selection. By switching between the first circuit (simple color replacement) and the second circuit (arithmetic processing for luminance improvement), the system adjusts the degree of processing based on whether luminance enhancement is actually needed, reducing energy loss
Data Source
AI summary
A display device includes an image processing unit that performs image processing on image data input from the outside, and performs display output corresponding to the image data on which image processing is performed by the image processing unit. The image processing unit includes a first processing circuit that simply replaces colors of an image to limit the number of colors used for the image to a predetermined number equal to or smaller than 16, a second processing circuit that performs image processing including arithmetic processing for improving luminance of a plurality of pixels constituting the image displayed on the display device corresponding to the image data; and a switching unit that causes the second processing circuit to perform image processing, and causes the first processing circuit to perform image processing when performing the image processing while saving more power than the second processing circuit.