Power-Saving Image Scanner Auto-Resume Mechanism
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Solution Overview
Problem
Information processing apparatuses that shift to a power-saving state during image reading operations face challenges in automatically resuming reading processes without user intervention, leading to cumbersome error handling and incomplete multi-page file generation.
Innovation Solution
The implementation of a power-saving standby mode in information processing apparatuses that communicates with image reading devices to discard and re-read image data when returning from a power-saving state, ensuring seamless continuation of reading processes without error termination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by stationary object
If the information processing apparatus shifts to a power-saving state during image reading operation, then energy consumption is reduced, but the reading operation cannot be automatically resumed after returning from power-saving state
Solution Approach 1:
The system performs preliminary actions by storing the reading state information (number of read originals, reading position) before entering power-saving state. When returning from power-saving state, the application detects the interrupted reading operation and automatically resumes it by retrieving the stored state information, thus enabling automatic resumption without user intervention.
2Reliability
If the application generates a multi-page file by reading a plurality of originals, then complete image data is obtained, but user intervention is required to combine pages when error occurs
Solution Approach 1:
The system implements self-service by enabling the application to automatically detect reading errors, retrieve previously stored reading state information, and resume the reading operation from the interrupted point. The application independently handles the combination of multiple pages into a complete multi-page file without requiring user intervention for error recovery or page assembly.
3Productivity
If the information processing apparatus returns from power-saving state and continues reading operation, then reading efficiency is improved, but image data consistency may be compromised
Solution Approach 1:
The system implements feedback by detecting whether a reading operation was interrupted due to power-saving state transition, then retrieving the stored reading state information to determine the correct resumption point. This feedback mechanism ensures that the reading operation continues from the exact interrupted position, maintaining image data consistency while improving reading efficiency.
Data Source
AI summary
An information processing apparatus having a power-saving standby power mode, according to an embodiment of the present invention, first communicates with an image reading device configured to read an image from an original and receives image data obtained in the reading of the image. In a case where a reading operation does not normally terminate because the information processing apparatus changes to a power-saving state during the reading operation and it is confirmed that the image processing apparatus has returned from the power-saving state, the information processing apparatus instructs the image reading device to discard the received image data of an image that was being read from an original when the information processing apparatus shifted to the power-saving state, and re-read the image that was being read from the original.