Image Reading Device USB Negotiation Power Mode Display
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Solution Overview
Problem
Existing image reading devices do not effectively provide users with useful information about the power mode when connected to a USB device, limiting user convenience.
Innovation Solution
An image reading device with a control section that determines and displays the power mode based on USB negotiation, including a USB coupling section, a reading section, and a display section to inform the user of the selected mode, allowing automatic mode selection and user awareness of power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the image reading device automatically selects power mode based on USB negotiation, then power consumption is optimized and operation efficiency is improved, but the user cannot see what mode is selected which reduces user awareness and convenience
Solution Approach 1:
The patent applies feedback by displaying the selected power mode information to the user through a display unit. The control unit notifies the user of the decided-on power mode (e.g., power saving mode or standard mode) so that the user can understand what mode the device is operating in, while the device continues to automatically select modes based on USB negotiation for optimal efficiency.
2Ease of operation
If the device provides detailed power mode information to the user, then user convenience is improved, but the device complexity increases due to additional display and control mechanisms
Solution Approach 1:
The patent applies multi-functionality by using the existing display unit (already present in the image reading device for other purposes) to also display power mode information. This avoids adding separate dedicated display components and keeps the device structure simple while still providing user convenience through information feedback.
Data Source
AI summary
The image reading device includes a reading section configured to read an image from a document, a control section configured to perform control related to the reading of the image from the document, a display section configured to display information, and a USB coupling section configured to couple with a USB cable. The control section control to switch to any one of a plurality of mode types. When a power source is turned on, a control section determines one of a plurality of mode types based on USB negotiation, and then makes a liquid crystal display section display information that enables identifying the decided-on mode.