Accessory Reader Working Distance Control for Checkout Scanning
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Solution Overview
Problem
Bi-optical workstations at checkout systems are underutilized due to their design, which prevents customers from easily accessing the scanner windows, limiting self-service options and causing concerns about re-scanning products already in the bagging area.
Innovation Solution
A customer-operated accessory reader with a restricted working distance range and motion tracking or cross-checking capabilities is integrated into the system to prevent capturing images of products in the bagging area, allowing customers to interact with transaction-related items while ensuring existing products are not re-scanned.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If an accessory reader with an accessory window facing the bagging area is used to enable customer operation and reading of transaction-related items, then customer participation and self-service capability are improved, but the risk of accidentally capturing and re-scanning targets on products already in the bagging area increases
Solution Approach 1:
The system dynamically adjusts the operational state of the accessory reader based on real-time detection of products in the bagging area. When products are detected in the bagging area, the system automatically prevents the accessory reader from capturing images, creating a dynamic control mechanism that adapts to changing conditions and eliminates the re-scanning risk while maintaining customer access.
Solution Approach 2:
The system implements a feedback mechanism where the state of the bagging area (presence/absence of products) is continuously monitored and used to control the accessory reader's imaging function. This feedback loop ensures that the accessory reader only operates when safe to do so, preventing accidental re-scanning of products already in the bagging area while maintaining ease of customer operation.
2Adaptability or versatility
If the accessory window faces the bagging area to allow customer access, then self-service capability is improved, but the likelihood of capturing images of products already scanned increases
Solution Approach 1:
The system performs preliminary detection of products in the bagging area before enabling the accessory reader to capture images. By checking the bagging area status in advance and preventing imaging when products are present, the system eliminates the reliability issue of accidental re-scanning while maintaining the versatility of customer self-service operation.
3Object-affected harmful factors
If motion tracking or cross-checking capabilities are added to prevent re-scanning, then re-scanning risk is reduced, but device complexity increases
Solution Approach 1:
The system uses the bi-optical workstation as an intermediary to detect products in the bagging area and control the accessory reader's operation. Rather than implementing complex motion tracking or cross-checking systems, the patent leverages the existing workstation's detection capabilities to mediate between the accessory reader and products, reducing system complexity while effectively preventing re-scanning.
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
Enables customer participation in the checkout process, reduces the risk of re-scanning products, and optimizes the use of bi-optical workstations by preventing accidental scanning of items in the bagging area, thus enhancing efficiency and utilization.
Implementation Method 1
Each imager has a one- or two-dimensional array of photocells or light sensors (also known as pixels), and an imaging lens assembly for capturing return light scattered and/or reflected from a target being imaged through a respective window
Implementation Method 2
Each imager has a one- or two-dimensional array of photocells or light sensors (also known as pixels)... for capturing return light scattered and/or reflected from a target
Data Source
AI summary
A checkout system includes a clerk-operated bi-optical workstation through which products having target data are passed to a bagging area, and a customer-operated accessory reader having an accessory window facing the bagging area and a data capture assembly for capturing additional target data of additional targets associated with transaction-related items, particularly over a restricted range of working distances that terminates short of the bagging area, and for preventing the accessory reader from capturing the target data of the products in the bagging area.