Reading Device Communication Failure Handling
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Solution Overview
Problem
In retail settings, communication failures between commodity registration devices and reading devices can lead to omitted commodity registrations, as the reading device outputs a confirmation sound before receiving a response, causing a time lag and deteriorating operability.
Innovation Solution
The reading device includes a communication interface to transmit commodity information and initialize communication if failed, signaling a communication failure to prevent omitted registrations by ensuring timely notification of potential errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the reading device outputs the reading sound before receiving a reception response, then the operability is improved, but the reliability deteriorates due to communication failures
Solution Approach 1:
The reading device outputs the reading sound immediately after reading commodity information, without waiting for the reception response. This preliminary action maintains smooth operability while the communication continues in the background, resolving the contradiction between immediate feedback and reliable confirmation.
2Reliability
If the reading device outputs the reading sound only after receiving a reception response, then the reliability is improved, but the operability deteriorates due to time lag
Solution Approach 1:
The reading sound is output as a preliminary action before the reception response is received, eliminating the time lag that would otherwise occur. The system maintains reliability by continuing communication in the background while providing immediate acoustic feedback to the operator.
3Reliability
If the reading device transmits commodity information continuously, then the reliability is improved, but the device complexity increases
Solution Approach 1:
The reading device transmits commodity information and receives reception responses as feedback to confirm successful communication. This feedback mechanism ensures reliability by verifying data transmission while maintaining relatively simple device architecture through standard communication protocols.
Data Source
AI summary
According to one embodiment, a reading device includes a communication interface for communication with a commodity registration device. A commodity reader of the reading device reads commodity information from a commodity and the commodity information can be used for identifying the commodity. An output device signals that the commodity reader has read commodity information. A controller causes the communication interface to transmit the commodity information read by commodity reader, initialize the communication interface when it is determined that transmission of the commodity information has failed, and signal a communication failure when transmission of the commodity information has failed.