Payment Terminal Dual Display Code Alignment
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Solution Overview
Problem
Existing payment terminals struggle to guide customers in aligning barcodes or codes on mobile devices with the camera's focal length and imaging range, making it difficult to perform accurate code payments.
Innovation Solution
A payment terminal equipped with a first and second display unit, an imaging unit, and a control unit that captures images of codes on media and displays preview images on both display units to assist users in aligning the code correctly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single display screen is used to guide code alignment, then the device structure remains simple, but it is difficult for users to accurately align the code with the camera's focal length and imaging range
Solution Approach 1:
The display function is segmented into two separate display units. The first display unit shows the captured code image and alignment guidance, while the second display unit shows the same information. This segmentation allows users to view alignment information from different positions and angles, improving alignment precision without making the device overly complex through multiple cameras or sensors
Solution Approach 2:
The solution adds a spatial dimension to the display system by placing two display units at different positions (front and rear sides of the terminal). This dimensional change enables users to align the code by viewing it from multiple perspectives, effectively solving the alignment precision problem through spatial arrangement rather than increasing device complexity
2Ease of operation
If the camera is positioned to capture codes from a fixed position, then the device structure remains simple, but customers have difficulty maintaining the code within the camera's imaging range and focal length
Solution Approach 1:
The system provides real-time feedback by displaying the captured code image on both display units. Users can see whether the code is properly aligned and within the imaging range through the visual feedback on the displays, allowing them to adjust the code position accordingly. This feedback mechanism improves ease of operation while maintaining capture precision
Solution Approach 2:
The system enables users to self-adjust the code positioning by providing them with visual information about the current capture state. Users can independently determine whether the code is correctly positioned and make adjustments without requiring additional guidance systems or complex automation, improving ease of operation while maintaining precision
Data Source
AI summary
A payment terminal capable of performing payment using a code includes a first display unit; a second display unit; an imaging unit arranged near the first display unit and configured to capture an image of the code displayed on a medium; and a control unit configured to control the first display unit, the second display unit, and the imaging unit. The control unit acquires a captured image captured by the imaging unit, and causes a first preview image based on the captured image to be displayed on the first display unit while simultaneously causing a second preview image based on the captured image to be displayed on the second display unit.