RFID Intercommunication Device Data Synchronization
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Solution Overview
Problem
The existing RFID systems face challenges in efficiently exchanging data between the communication device and the host device, particularly due to irregular time intervals of RF tag arrival and busy periods of the PLC function unit, leading to potential data loss and complex setup procedures.
Innovation Solution
A communication device with a controller that updates data to be exchanged with the host device by including read data from the RF tag at regular or irregular intervals, using a second data value to notify the host device of the first data's availability, allowing for easier synchronization and reducing the risk of data loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If voice mail notification is provided to mobile phones, then users can be notified of missed calls, but users incur mobile phone communication costs and receive unsolicited messages when absent from the premises
Solution Approach 1:
A notification device is introduced as an intermediary component between the telephone exchange and the user's mobile phone. This device receives notification signals from the exchange and displays them locally without requiring the user to access their mobile phone, thereby eliminating mobile communication costs while maintaining reliable notification delivery.
Solution Approach 2:
The notification function is extracted from the mobile phone communication system and transferred to a dedicated notification device at the premises. This separation allows the notification system to operate independently using local power and display resources, removing the dependency on mobile phone networks and associated costs.
2Reliability
If voice mail notification is provided to mobile phones, then users can be notified of missed calls, but users receive unsolicited messages when not present at the premises
Solution Approach 1:
The notification device serves as an intermediary that provides localized notification display without requiring mobile phone involvement. This eliminates the harmful effect of unsolicited messages being sent to absent users' mobile phones, as the notification system operates entirely within the premises infrastructure.
Solution Approach 2:
The notification device provides self-contained notification capability at the premises, serving the notification function locally without relying on external mobile phone networks. This self-service approach prevents unsolicited messages from reaching users outside the premises while maintaining reliable notification delivery for present users.
3Adaptability or versatility
If IP-based telephony is used, then communication flexibility is improved, but network security against viruses and hacking attacks deteriorates
Solution Approach 1:
The notification device acts as a secure intermediary component that operates within the IP network infrastructure while providing isolated notification functionality. This mediator approach allows the system to benefit from IP-based communication flexibility while maintaining security by limiting network exposure to specific, controlled notification functions rather than full telephony capabilities.
Data Source
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AI summary
A communication device includes a communicator that communicates with an RF tag in a non-contact manner, a communication unit that exchanges data with a host device, and a controller that controls the communicator and the communication unit. Every time the communicator sequentially reads data from the RF tag that passes a communication-feasible region near the communicator at regular time intervals or irregular time intervals, the controller updates first data to be exchanged with the host device by the communication unit so as to include the read data. Also, the controller updates second data to be exchanged with the host device by the communication unit to a value different from a previous value in association with timing with which the first data is updated.