Image Accessing Unit Data Transfer via Sampled Structure
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Solution Overview
Problem
Conventional image accessing units transfer large quantities of image data slowly due to limited transmission speed and bandwidth, resulting in sluggish image display performance on computers.
Innovation Solution
The method involves converting image data into sampled structure data with reduced data amount and utilizing a dual USB transfer pipe interface to rapidly transfer the data, allowing for increased data speed and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If complete 4:2:2 image data is transferred using conventional USB transmission, then data integrity is maintained, but transmission speed is slow and transfer time is long
Solution Approach 1:
The patent extracts only the essential luma components (Y) from the complete 4:2:2 image data for transmission, replacing chroma components (U, V) with blank entries. This selective extraction reduces the data volume by approximately 33% while preserving the most visually critical information, thereby accelerating transmission speed and reducing transfer time without significantly compromising perceived image quality.
Solution Approach 2:
The patent applies partial action by transmitting only a subset of the complete image data (specifically the luma components which carry the most visual information). This partial transmission approach achieves acceptable image quality with reduced data volume, effectively solving the contradiction between complete data transfer and fast transmission.
2Productivity
If large quantities of image data are transferred through single USB pipe, then complete image information is transmitted, but transmission efficiency is low
Solution Approach 1:
The patent extracts and transmits only the essential luma components while replacing chroma components with blank entries. This extraction strategy reduces the data amount by approximately one-third, directly improving transmission efficiency while maintaining acceptable image quality for real-time preview applications.
Solution Approach 2:
The patent changes the data structure parameters by converting complete 4:2:2 image data into a sampled structure with blank entries. This parameter transformation reduces the data volume and optimizes it for faster USB transmission, resolving the contradiction between data quantity and transmission efficiency.
3Speed
If sampled structure data with blank entries is transmitted, then transmission speed is enhanced, but data completeness is reduced
Solution Approach 1:
The patent strategically extracts only the most visually critical luma components for transmission, accepting the loss of chroma information. This selective extraction achieves faster transfer speeds while maintaining acceptable perceived image quality, as human vision is more sensitive to luma variations than chroma variations.
Solution Approach 2:
The patent uses a simplified data representation with blank entries that is sufficient for real-time preview purposes. This disposable approach to data completeness accepts that full image quality is not needed for preview, enabling faster transmission with reduced data requirements.
Data Source
AI summary
A method for transferring image data by using an interface with at least two transfer pipes to transfer from an image accessing unit to a computer is disclosed. The method includes: obtaining image data in response to a control command from the computer; converting the image data to sampled structure data and transferring the sampled structure data to the computer through at least one of the data transfer pipes; and providing information to the computer to recover the received sampled structure data.