Printer Power Management for IC Card Reading
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Solution Overview
Problem
Contemporary printers in low-power consumption mode cannot read information from IC cards due to lack of electricity supply to the reader, requiring users to activate the printer, which is inconvenient.
Innovation Solution
An electronic apparatus that operates in both normal and power-saving modes, with a control section that allows the reader to remain operational in a first power-saving mode when connected, and transitions to a deeper power-saving mode when disconnected, enabling reading from IC cards or external storage with reduced power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the printer enters a low-power consumption mode to reduce electricity usage, then power consumption is reduced, but the reader cannot read information from IC cards
Solution Approach 1:
The power management system is segmented into multiple power-saving modes (first power-saving mode and second power-saving mode) with different levels of functionality. The reader is selectively powered in the first power-saving mode while being completely powered down in the second power-saving mode, allowing the system to balance between power consumption and reader functionality based on actual needs.
Solution Approach 2:
The system dynamically transitions between different power-saving modes based on whether an IC card is detected. When an IC card is inserted, the system switches to the first power-saving mode to maintain reader functionality. When no IC card is present, the system switches to the second power-saving mode to maximize power savings. This dynamic adaptation resolves the contradiction between power consumption and reader functionality.
2Ease of operation
If the reader is powered on to enable IC card reading, then reader functionality is maintained, but power consumption increases
Solution Approach 1:
The system changes the power supply parameter to the reader based on operational requirements. In the first power-saving mode, the reader receives reduced power compared to normal operation, enabling basic IC card reading functionality while consuming less electricity. In the second power-saving mode, power to the reader is completely cut off to minimize consumption. This parameter adjustment resolves the contradiction between maintaining reader functionality and reducing power consumption.
3Adaptability or versatility
If the printer remains in normal mode to maintain full functionality, then all operations are available, but power consumption is higher
Solution Approach 1:
The system periodically checks for IC card insertion and dynamically switches between normal mode, first power-saving mode, and second power-saving mode. This periodic monitoring and mode switching allows the system to maintain full functionality when needed while transitioning to power-saving modes during periods of inactivity or when IC card operations are not required, resolving the contradiction between maintaining full functionality and reducing power consumption.
Data Source
AI summary
An electronic apparatus operates in a normal mode and a power-saving mode. A smaller amount of electricity is consumed in the power-saving mode than in the normal mode. The electronic apparatus includes a control section and a connection interface to which a reader that reads information from an external storage medium is connectable. When the electronic apparatus transits from the normal mode to the power-saving mode, if the reader is connected to the connection interface, the control section transits to a first power-saving mode in which both the connection interface and the reader are operable, or if the reader is not connected to the connection interface, the control section transits to a second power-saving mode in which a lower amount of electricity is consumed than in the first power-saving mode.