Image Reading Apparatus Transfer Speed Control
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Solution Overview
Problem
Image reading apparatuses face timeouts during data transfer due to paused reading operations, leading to communication disruptions and the need for unrelated communication load and device reform on the receiving side.
Innovation Solution
An image reading apparatus with a control section that detects paused reading states and adjusts transfer speeds to prevent timeouts by lowering the transfer rate when reading is paused, allowing continuous data transfer without disrupting communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the image reading apparatus sequentially transmits image data to the server, then memory capacity is used effectively, but timeout occurs when reading is paused due to paper jam or other errors
Solution Approach 1:
The patent applies dynamics by making the transfer speed variable rather than fixed. The control section dynamically adjusts the image data transfer speed based on the real-time reading state. When reading is normal, transfer proceeds at standard speed; when pausing is detected (via pause flag), transfer speed is reduced to match the slowed reading rate, preventing timeout while maintaining effective memory utilization.
2Reliability
If command is sent at predetermined time intervals to prevent timeout, then communication reliability is improved, but communication load increases and receiving side needs reform
Solution Approach 1:
The patent applies self-service by making the sending side autonomous in detecting and responding to reading pauses. The control section continuously monitors the reading state through pause flags and automatically adjusts transfer speed accordingly. This eliminates the need for external timeout prevention commands, reducing communication load and avoiding the need to reform the receiving side device.
Solution Approach 2:
The patent implements feedback by using pause flags that provide real-time information about the reading state to the control section. This feedback mechanism allows the system to automatically adjust transfer speed based on actual reading conditions, preventing timeout without requiring additional communication protocols or reforms to the receiving side.
3Reliability
If transfer speed is reduced when reading is paused, then timeout is prevented, but transfer time increases
Solution Approach 1:
The patent applies dynamics by implementing variable transfer speed that adapts to reading conditions. Transfer speed is high during normal reading operations, minimizing transfer time. When pausing is detected, speed is reduced only for the duration of the pause, preventing timeout. This dynamic adjustment optimizes the balance between transfer speed and timeout prevention.
Solution Approach 2:
The patent changes the transfer speed parameter based on reading state. During normal operation, transfer proceeds at maximum speed. When pause flags indicate reading interruption, the transfer speed parameter is adjusted downward. This parameter change prevents timeout during pauses while minimizing impact on overall transfer time, as the reduced speed is applied only temporarily during pause periods.
Data Source
AI summary
Disclosed is an image reading apparatus including: an image reading section to read an image; a storage section to store the image; and a control section to detect whether or not the image reading section is in a state of pausing reading of the image, to determine transfer speed of the image to an external device based on a detected result, and to transfer the image to an external device at a determined transfer speed.