Screen-off Display Method Compressing Image Data
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Solution Overview
Problem
Existing screen-off display methods in display devices consume high energy due to the need for real-time updates of image data, especially when displaying multiple images, which affects user experience and device efficiency.
Innovation Solution
A screen-off display method that compresses image data and stores it in memory at a preset compression ratio, allowing for efficient storage and display of multiple images without real-time updates, thereby reducing energy consumption and optimizing user experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If real-time updates of image data are performed for screen-off display, then display freshness is maintained, but energy consumption increases
Solution Approach 1:
The patent applies preliminary action by pre-compressing and storing multiple images in memory before screen-off state. The processor compresses images at different compression ratios and stores them in advance, allowing the display to show pre-compressed images without real-time updates, thus maintaining display freshness while reducing energy consumption during screen-off state
Solution Approach 2:
The patent applies parameter changes by dynamically adjusting the compression ratio of stored images based on display requirements. Different images are compressed at different ratios (e.g., first image at higher compression ratio, second image at lower compression ratio), allowing the system to balance between storage efficiency and display quality, thereby reducing energy consumption while maintaining acceptable display freshness
2Adaptability or versatility
If multiple images are stored in memory for screen-off display, then display content richness is improved, but memory usage increases
Solution Approach 1:
The patent applies parameter changes by storing multiple images at different compression ratios in the same memory space. Instead of storing only full-resolution images, the system stores compressed versions with varying compression ratios, allowing multiple images to coexist in limited memory while providing rich display content options
Solution Approach 2:
The patent applies segmentation by dividing the memory storage into multiple image slots, each capable of storing compressed images. The memory is segmented to accommodate multiple images with different compression characteristics, allowing the system to manage limited memory resources efficiently while providing diverse display content
3Manufacturing precision
If processor remains active for image updates, then image quality is maintained, but device efficiency decreases
Solution Approach 1:
The patent applies preliminary action by having the processor perform image compression and storage operations before the screen-off state is entered. Once images are pre-compressed and stored in memory, the processor can enter a low-power or sleeping state during screen-off display, eliminating the need for continuous processor activity while maintaining image quality through the use of pre-compressed images
Solution Approach 2:
The patent applies copying by creating compressed copies of images and storing them in memory. Instead of maintaining original high-quality images in the processor's active memory, the system creates and stores compressed copies, allowing the processor to remain inactive while still providing acceptable image quality for screen-off display
Data Source
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AI summary
A screen-off display method includes: in response to a screen-off trigger operation, compressing image data of at least two images to be displayed and storing the compressed image data in the memory; and controlling the display screen to display images according to the image data in the memory.