Image Processing System Data Slicer Bandwidth Reduction
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Solution Overview
Problem
Current image display technologies face bandwidth limitations and inefficiencies in memory access, particularly in stereo image systems, leading to insufficient brightness and potential failure of persistence of vision due to short vertical blanking intervals (VBIs) and high bandwidth requirements.
Innovation Solution
An image processing system with a data slicer that divides image data into two portions (MSBs and LSBs) for storage and processing, allowing for reduced bandwidth usage by storing and reading only the most significant bits (MSBs) of adjacent images for overdrive signal generation, while using the least significant bits (LSBs) of current images for display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If image data is read from memory at high frequency to extend VBI, then display frequency is improved, but bandwidth requirements increase
Solution Approach 1:
The patent segments image data into two portions: first portion (MSBs) and second portion (LSBs). The data slicer divides the image data stream, and the memory stores these portions separately. This segmentation allows the system to read only the necessary first portions from memory at high frequency without requiring full image data bandwidth, thus extending VBI while reducing bandwidth requirements.
2Manufacturing precision
If full image data is stored and read from memory, then image quality is maintained, but memory capacity and power consumption increase
Solution Approach 1:
The patent extracts only the necessary first portion (MSBs) of image data from memory for overdrive signal generation, while the second portion (LSBs) is read from the image data stream. This extraction approach maintains image quality for the critical overdrive calculation while reducing the amount of data stored in memory and thus lowering memory capacity requirements and power consumption.
3Illumination intensity
If VBIs are extended to improve brightness, then persistence of vision is enhanced, but display refresh rate decreases
Solution Approach 1:
By segmenting image data into first and second portions and storing only the first portions in memory, the system can extend VBI duration to improve brightness and persistence of vision without significantly impacting the overall display refresh rate. The data slicer enables selective reading of first portions at optimized intervals, allowing VBI extension while maintaining acceptable refresh performance.
Data Source
AI summary
An image processing system includes a memory, a data slicer and an image processor. The data slicer divides each of current image data and adjacent image data into a first portion and a second portion to be stored into the memory. The image processor reads from the memory the first portion and the second portion of the current image data and the first portion of the adjacent image data for image processing.