Image Reading Apparatus Dynamic Compression Rate Control
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Solution Overview
Problem
Image reading apparatuses face issues when transferring image files to external terminals via networks, as the reading rate can be slower than the transfer rate, leading to temporary interruptions and reduced image quality due to the need to lower image resolution.
Innovation Solution
An image reading apparatus and method that includes a controller to determine a compression rate for image files based on the network transfer rate and reading section rate, generating a single first image file and transferring it, and adjusting the compression rate for subsequent files to maintain optimal processing and image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the reading resolution is lowered to increase the reading rate, then the reading rate is improved, but the image quality deteriorates
Solution Approach 1:
The patent applies dynamics by making the compression rate adjustable and variable based on real-time network transfer rate conditions. The compression rate determination unit dynamically changes the compression rate from an initial value to a adjusted value based on whether the network transfer rate is higher or lower than the reading rate, allowing the system to adapt to changing network conditions while maintaining optimal balance between reading rate and image quality
Solution Approach 2:
The patent changes the compression rate parameter based on network transfer rate measurements. When the network transfer rate is lower than the reading rate, the compression rate is increased to reduce file size and match the transfer capability. When the network transfer rate is higher, the compression rate is decreased to improve image quality. This parameter adjustment resolves the contradiction by adapting the compression level to actual network conditions
2Loss of time
If the reading resolution is lowered to reduce reading time, then the reading time is reduced, but the image quality of the transferred image file deteriorates
Solution Approach 1:
The patent changes the compression rate parameter based on network transfer rate measurements. When the network transfer rate is lower than the reading rate, the compression rate is increased to reduce file size and match the transfer capability. When the network transfer rate is higher, the compression rate is decreased to improve image quality. This parameter adjustment resolves the contradiction by adapting the compression level to actual network conditions
3Productivity
If the compression rate is increased to match the transfer rate, then the transfer efficiency is improved, but the image quality deteriorates
Solution Approach 1:
The patent implements feedback by measuring the network transfer rate and using this information to adjust the compression rate. The compression rate determination unit continuously monitors whether the network transfer rate is higher or lower than the reading rate and adjusts the compression rate accordingly. This feedback mechanism ensures that the compression rate is optimized for both transfer efficiency and image quality based on actual network conditions
Solution Approach 2:
The patent applies dynamics by making the compression rate adjustable and variable based on real-time network transfer rate conditions. The compression rate determination unit dynamically changes the compression rate from an initial value to an adjusted value based on whether the network transfer rate is higher or lower than the reading rate, allowing the system to adapt to changing network conditions while maintaining optimal balance between transfer efficiency and image quality
Data Source
AI summary
An image reading apparatus is configured to be connected to an external terminal via a network. The image reading apparatus includes a transmitter, a reading section, and a controller. The controller executes an image generation process of generating a single first image file from image data of a document read by the reading section and causes the transmitter to transfer the first image file to the external terminal connected via the network. The controller executes a compression rate determination process of determining a compression rate of a second image file in the image generation process based on a transfer rate of the network when the first image file is transferred to the external terminal and a reading rate of the reading section.