Image Data Transfer Format Control for Load Optimization
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Solution Overview
Problem
Existing methods for transferring image data from image reading devices, such as scanners, face a tradeoff between high-quality image processing and reduced traffic, CPU, and I/O loads, as they either transfer uncompressed data for precision but with high loads, or compressed data that degrades image quality, without considering the specific image processing needs at the transfer destination.
Innovation Solution
A method and apparatus that determine the appropriate data format for image data transfer based on system configuration information of the image reading device and the intended processing on the external apparatus, allowing for dynamic selection between non-compression and compression transfer methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If non-compression transfer method is used, then image quality is improved, but traffic load and CPU load increase
Solution Approach 1:
The patent applies dynamics by making the compression setting adjustable and adaptable rather than fixed. The system dynamically selects between compression and non-compression transfer methods based on real-time conditions including interface type, image forming conditions, and destination device capabilities, resolving the contradiction between image quality and data amount through conditional adaptability
Solution Approach 2:
The patent changes the parameter of compression ratio from a fixed state to a variable state. By adjusting compression settings based on interface type (e.g., USB 2.0 vs. slower interfaces), image forming conditions, and destination device specifications, the system optimizes the balance between image quality preservation and data transmission efficiency
2Quantity of substance
If compression transfer method is used, then traffic load is reduced, but image processing precision deteriorates
Solution Approach 1:
The system dynamically adjusts compression settings based on the destination device type and intended image processing operations. When the destination is an image reading apparatus performing OCR or similar precision-sensitive operations, the system selects non-compression or lossless compression methods, whereas for general-purpose devices, compression is applied to reduce data amount
Solution Approach 2:
The compression ratio parameter is changed based on destination device capabilities and processing requirements. The system selects from multiple compression levels and methods (JPEG, lossless compression, or no compression) depending on the specific use case, resolving the contradiction between data reduction and processing precision
3Manufacturing precision
If non-compression transfer method is selected without exception, then image processing precision is maintained, but traffic load and I/O load increase
Solution Approach 1:
The patent implements dynamic selection between compression and non-compression methods based on destination device type and processing requirements. Rather than universally using non-compression transfer, the system adapts its approach: using compression for general-purpose devices and non-compression for devices requiring high-precision image processing, thereby optimizing both precision and transfer efficiency
Solution Approach 2:
The system changes the compression parameter based on destination device specifications and intended operations. For devices with sufficient processing capability and storage (e.g., modern PCs), compression is applied to improve transfer efficiency. For devices requiring precise image processing (e.g., scanners performing OCR), non-compression or lossless compression is used to maintain precision
Data Source
AI summary
The data format of image data when an image reading apparatus transfers, to an external apparatus, the image data obtained by reading an original by the image reading apparatus is decided based on system configuration information of the image reading apparatus and setting information corresponding to processing to be executed on the image data in the external apparatus. Control for transferring, from the image reading apparatus to the external apparatus, the image data of the decided data format is performed.