Projector-Based Transaction Terminal Display
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Solution Overview
Problem
In transaction terminals, liquid crystal displays obstruct the operator's view and require inefficient focus switching between the display and other transaction components, hindering productivity in environments like retail stores.
Innovation Solution
A transaction terminal using a projector to display transaction screens on a surface instead of a liquid crystal display, accompanied by an input device for recording selections and a computer for generating and processing these screens, allowing for improved visibility and reduced obstruction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a liquid crystal display is used in an upright position, then the display is prominent and easily visible, but it obstructs the operator's view and requires inefficient focus switching
Solution Approach 1:
The display is repositioned from a vertical upright orientation to a horizontal projection on the top surface of the item identification unit. This dimensional change allows the display to be viewed from above without obstructing the operator's downward view of the transaction area, eliminating the need to switch focus between display and transaction components.
2Illumination intensity
If a liquid crystal display is positioned upright, then it provides clear visual output, but it reduces operator productivity by requiring focus changes
Solution Approach 1:
By projecting the display horizontally onto the top surface rather than displaying vertically, the operator can maintain continuous focus on the transaction area below while still viewing the display information from above, thereby improving productivity without sacrificing display clarity.
3Ease of operation
If a projector is used to project images on a surface, then operator view obstruction is eliminated, but the projection surface may not provide the same viewing angles as a traditional display
Solution Approach 1:
The horizontal projection surface on the top of the item identification unit provides a viewing angle that allows operators to view the display from above while maintaining focus on the transaction area. This dimensional repositioning creates a viewing geometry that accommodates both display visibility and operational clarity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enhances operator privacy and productivity by maintaining focus on the transaction area, improving visibility, and streamlining the transaction process through projector-based screen projection and input device integration.
Implementation Method 1
a projector for projecting images of transaction screens on a surface during a transaction
Data Source
AI summary
A transaction terminal which includes a projector instead of a liquid crystal display. The transaction terminal includes a projector for projecting images of transaction screens on a surface during a transaction, an input device for recording operator selections in the transaction screens during the transaction, and a computer for generating the images of the transaction screens, for displaying the screens via the projector, and for processing the operator selections during the transaction.