Off-Platter Detection in Barcode Weighing Apparatus
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Solution Overview
Problem
Existing weigh platter and scale systems face inaccuracies in weight measurement due to produce or products extending off the platter, leading to incorrect pricing, as current technologies lack the ability to effectively detect and indicate off-platter conditions to point-of-sale systems.
Innovation Solution
A barcode reading and weighing apparatus equipped with an off-platter detection assembly and a communication interface that composes and sends a weight-conveying message to the POS system, utilizing predefined overhead bits to indicate off-platter conditions, causing the system to ignore potentially inaccurate weights.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the scale measures weight of items on the weigh platter, then weight measurement function is provided, but inaccurate weight measurement occurs when produce extends off the platter
Solution Approach 1:
The patent introduces an intermediary communication mechanism between the weighing apparatus and POS system. The off-platter detection assembly detects weigh conditions and communicates this information to the POS system through a communication interface, which then uses the information to determine whether to accept the weight measurement without the POS system directly observing the platter condition.
Solution Approach 2:
The system implements feedback by detecting off-platter conditions and communicating this information back to the POS system. The POS system receives the off-platter indication and uses it to adjust its weight acceptance decision, creating a closed-loop feedback mechanism that improves measurement reliability.
2Reliability
If off-platter conditions are explicitly indicated to the POS system, then pricing accuracy is improved, but system complexity increases
Solution Approach 1:
The communication interface serves multiple functions: it transmits weight measurements, transmits off-platter condition information, and enables bidirectional communication between the weighing apparatus and POS system. This multi-functionality reduces the need for separate dedicated components for each communication task.
Solution Approach 2:
The system changes the state of communication parameters by setting specific flags or codes in the data transmission protocol to indicate off-platter conditions. Instead of adding physical indicators or complex signaling mechanisms, the system uses parameter changes in the existing digital communication stream to convey condition information.
3Productivity
If the POS system accepts all weight measurements, then transaction speed is maintained, but incorrect pricing occurs due to off-platter weigh conditions
Solution Approach 1:
The off-platter detection assembly performs preliminary detection of weigh conditions before the weight measurement is finalized and transmitted to the POS system. This preliminary action allows the system to flag problematic measurements in advance, enabling the POS system to reject inaccurate weights without requiring manual verification, thus maintaining transaction speed while improving accuracy.
Data Source
AI summary
Example methods and apparatuses to indicate off-platter weigh conditions are disclosed herein. An example barcode reading and weighing apparatus includes a weigh platter; a scale; an off-platter detection assembly configured to detect an off-platter weigh condition; a processor in communication with the scale and the off-platter detection assembly; and a non-transitory machine-readable storage medium storing instructions that, when executed by the processor, cause the barcode reading and weighing apparatus to, responsive to detecting the off platter condition: compose a weight-conveying message, the weight-conveying message including (i) a weight-conveying field having the weight encoded therein and (ii) overhead information, the overhead information being operative, when the weight-conveying message is received by a POS system, to cause the POS system to not accept the weight for the transaction, the overhead information also not indicating the off-platter weigh condition to the POS system; and send the weight-conveying message to the POS system.