Dynamic Data Compression for Transmission Capacity Limits
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Solution Overview
Problem
Conventional data transmission methods set a single standard capacity, leading to transmission overload and errors, with existing solutions either degrading image data or requiring inefficient recompression processes, failing to meet user demands for high-resolution image data while managing capacity limitations effectively.
Innovation Solution
An apparatus that dynamically adjusts data compression rates page by page, starting with minimal image degradation, using field separation and recompression to ensure data volume fits within transmission capacity limits, allowing for efficient transmission of high-quality image data without errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single standard capacity setting is used for data transmission, then the transmission process is simple, but transmission overload and errors occur when the data volume exceeds the capacity limit
Solution Approach 1:
The patent implements dynamic capacity adjustment by allowing the transmission capacity to be flexibly changed based on the actual data volume. The system automatically selects appropriate capacity settings from multiple predefined levels (e.g., 1MB, 2MB, 5MB, 10MB) to match the document size, transforming the static single-capacity system into a dynamic multi-capacity system that adapts to different transmission scenarios.
2Reliability
If the total capacity is limited for transmission, then transmission errors are prevented, but image data is degraded to lower resolution and text data are read in with high resolution contrary to user intention
Solution Approach 1:
The patent segments the document into multiple pages and applies different compression rates to different pages based on their content characteristics. By analyzing each page individually and assigning appropriate compression levels, the system preserves high resolution for text-heavy pages while applying higher compression to image-heavy pages, thereby maintaining overall image quality while ensuring transmission within capacity limits.
3Quantity of substance
If the overall compression rate is increased to reduce total data volume, then transmission capacity limitations are met, but the overall image of the data is deteriorated and all pages require recompression
Solution Approach 1:
The patent applies local quality by assigning different compression rates to different pages based on their specific content characteristics. Each page is evaluated individually and given a compression rate appropriate to its content type (text-heavy, image-heavy, or mixed), rather than applying a uniform compression rate to the entire document. This localized approach maintains high quality where needed while achieving overall size reduction.
4Reliability
If all pages are subjected to recompression process to meet capacity limits, then transmission errors are prevented, but the efficiency of the process is deteriorated
Solution Approach 1:
The patent implements partial action by applying compression only to the extent necessary to meet transmission capacity requirements. The system calculates the required compression level based on the target capacity and applies it selectively, rather than uniformly compressing all pages beyond what is needed. This partial compression approach maintains processing efficiency while ensuring reliable transmission.
Data Source
AI summary
An apparatus for transmitting read data comprises a document reader 101, a data compression unit 102, a data transmission means and a CPU 104. The document reader 101 reads in a document having been subjected to predetermined data processing. The data compression unit 102 performs compression of the read data with a designated file format. The CPU 104 checks the limitation on transmission capacity set in advance for each data transmission means. When the volume of data compressed for transmission falls within the limited range of transmission capacity set for the data transmission means, the read data is transmitted to a destination designated by the user via the data transmission means designated by the user.