Self-Service Checkout Apparatus Wireless Tag Reading Control
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Solution Overview
Problem
Self-service checkout systems often fail to read wireless tags attached to commodities due to positional issues, leading to unread items when customers do not follow the expected procedure of moving items from the initial scanning area to a secondary bagging area.
Innovation Solution
A checkout apparatus with a processor that determines whether all commodities have been moved from the initial area to the secondary area by reading wireless tags and using a scale to verify weight changes, preventing the initiation of checkout processing until all items are confirmed to be in the secondary area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a second antenna is installed in a bagging area to read wireless tags when commodities are moved there, then the number of unread commodities is reduced, but the system fails if customers do not follow the expected procedure of moving items to the designated area
Solution Approach 1:
The patent dynamically switches between two reading modes: batch reading when items are in the shopping basket and individual reading when items are in the bagging area. The system adapts its reading strategy based on the real-time location and state of commodities, rather than relying on a fixed procedure. This dynamic approach ensures reliable reading regardless of whether customers follow the expected workflow.
Solution Approach 2:
The patent changes the operational parameters of the wireless tag reading system based on commodity location. When commodities are detected in the bagging area (parameter change in location), the system switches from batch reading mode to individual reading mode, adjusting its behavior to match the current state and ensure all items are captured.
2Measurement precision
If the system requires all commodities to be moved to the second area before allowing checkout processing, then reading accuracy is improved, but checkout efficiency is reduced due to additional verification steps
Solution Approach 1:
The patent performs preliminary reading of wireless tags in the bagging area before the customer completes the checkout process. By proactively detecting and registering commodities in the second area in advance, the system ensures accurate tracking without requiring additional verification steps during checkout, thus maintaining processing speed while improving accuracy.
Solution Approach 2:
The patent implements a feedback mechanism where the system continuously monitors the presence of commodities in both areas and uses this information to control the checkout process. The checkout processing is enabled only when the system receives feedback confirming that all commodities have been properly tracked, ensuring accuracy while streamlining the verification process through automated feedback loops.
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
Ensures that all commodities are successfully read and registered, reducing the number of unread items and ensuring accurate sales registration and payment processing.
Implementation Method 1
a wireless tag reader configured to read tag information from a wireless tag in a first area and a second area
Implementation Method 2
the processor determines that the commodities have been moved from the first area to the second area when the scale detects a change in weight
Data Source
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AI summary
A checkout apparatus includes an input device through which an instruction to start checkout settlement processing is input, a wireless tag reader configured to read tag information from a wireless tag attached to a commodity in first and second areas, and a processor. The processor is configured to, when the wireless tag reader reads tag information from a wireless tag attached to a commodity in either the first area or the second area, register the tag information in a memory, and upon receipt of an input of the instruction, perform settlement processing using the registered tag information. The processor determines whether commodities to be purchased have been moved from the first area to the second area and controls the input device to not accept the input of the instruction until all commodities are determined to have been moved.