Payment Terminal Display Backlight Control During Printing
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Solution Overview
Problem
In card payment terminal devices with touch panels, important software keys such as the sales registration key and confirmation completion key are prone to wrongful operation due to the lack of a clear two-step confirmation process, leading to potential errors during transactions.
Innovation Solution
The card payment terminal device incorporates a controller that manages the illuminator to attenuate or turn off the display during printing, and employs specific input operation requirements, such as drag-and-drop actions on important keys, to ensure operators clearly confirm critical inputs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a touch panel with software keys is used for payment processing, then the device becomes more compact and easier to operate, but the risk of wrongful operation increases due to lack of clear confirmation
Solution Approach 1:
The system provides visual feedback by changing the appearance of important keys (displaying them in a distinct color or style) to give clear feedback to the operator about which keys require special attention. This feedback mechanism helps operators distinguish critical operations from routine operations, reducing wrongful operations while maintaining ease of use.
Solution Approach 2:
The patent applies color changes to important keys on the touch panel display. Keys that require special confirmation (such as sales registration or confirmation completion) are displayed in a distinct color (e.g., red or orange) to visually alert the operator. This color-coding system maintains the simplicity of touch panel operation while significantly reducing the risk of accidental or wrongful operations.
2Ease of operation
If important keys are displayed prominently on the touch panel, then operation becomes easier, but wrongful operation becomes more likely
Solution Approach 1:
The system provides dual feedback: visual feedback through color-coding important keys to make them easily identifiable, and operational feedback by requiring a two-step confirmation process. This combination maintains ease of operation while preventing wrongful operations through clear indication and verification.
Solution Approach 2:
The system takes preliminary anti-action by requiring operators to consciously confirm operations on important keys through a two-step process. Before executing critical operations, the system prompts for additional confirmation, preventing accidental or wrongful operations while keeping the interface simple and easy to use.
3Loss of information
If the illuminator remains on during printing, then the display remains visible for operator confirmation, but power consumption increases
Solution Approach 1:
The system performs preliminary action by displaying all necessary transaction information on the screen before initiating the printing process. This allows the illuminator to be turned off during printing without causing information loss, as the operator has already seen and can review the information previously displayed. The printer buffer stores the information for later retrieval if needed.
Solution Approach 2:
The system rushes through the printing process quickly by turning off the illuminator during the brief printing interval. Since printing is a fast operation, this temporary darkness does not significantly impact operator workflow, while achieving substantial power savings during this interval.
Data Source
AI summary
A payment terminal device attenuates or turns on a backlight illuminating a display of a touch panel displaying a screen relating to payment processing when information relating to the payment processing is printed in a print module. In addition, the payment terminal device turns off the attenuated or turned off backlight, after the printing of the information relating to the payment processing is finished by the print module. When the printer is operated, by pausing or suspending a part of a function or a process, a total amount of current flowing into a power supply stored inside a housing is reduced and power consumption is reduced.