Image Forming Apparatus Link Interruption Handling
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Solution Overview
Problem
Existing image forming systems face significant delays and inefficiencies when communication is interrupted during data transfer between a terminal device and an image forming apparatus, particularly in wireless links, leading to the need for restarting data transmission from the beginning.
Innovation Solution
The implementation of link state detecting means and data suspending means in both the image forming apparatus and terminal device, which allow for the suspension of data transfer at the point of interruption, enabling resumption from the middle when communication is restored, and include features like time measurement and data discard mechanisms to manage memory usage and ensure complete data reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If communication is interrupted during data transfer, then data transmission must be restarted from the beginning, but this causes significant time loss and reduces productivity
Solution Approach 1:
The system performs preliminary actions by detecting communication interruption and suspending the data reception state before complete data loss occurs. The image forming apparatus records the unfinished reception state (position up to the interruption point) so that when communication is restored, data transfer can resume from the suspended point rather than restarting from the beginning, thus preventing time loss.
2Reliability
If data transmission is restarted from the beginning after interruption, then complete data reception is ensured, but this increases the duration of the operation and reduces efficiency
Solution Approach 1:
The system performs preliminary suspension of the data reception state at the interruption point, preserving the progress made so far. When communication is restored, the apparatus resumes reception from the suspended point, ensuring data completeness while significantly reducing the total duration compared to restarting from the beginning.
3Reliability
If the image forming apparatus waits for good link status to recover, then communication can be restarted, but this requires much time and trouble
Solution Approach 1:
The system implements self-service by automatically detecting communication interruption, suspending the data reception state, and resuming from the suspended point when communication is restored, without requiring user intervention. This eliminates the need for users to manually restart communication or worry about data loss, significantly improving ease of operation.
Data Source
AI summary
A multifunction peripheral (100) is connected to a terminal device (200) via a communication link, receives image data transmitted from the terminal device (200) and forms an image based on the image data. Further, the multifunction peripheral (100) detects the state of connection of the communication link and thereby detects whether or not communication with the terminal device (200) is interrupted. If interruption of communication is detected while image data transmitted from the terminal device is being received, the multifunction peripheral suspends the unfinished state of reception of image data.