RFID Tag Initialization via Optical Display and Wireless Relay
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Solution Overview
Problem
Existing RFID systems require extensive and costly infrastructure for tracking passive RFID tags across large areas, and the initialization process is labor-intensive and limited to areas with deployed RFID networks, making it difficult to provide services outside these areas.
Innovation Solution
The use of an RFID repeater with an optical reader and wireless transmitter that receives a unique identifier and encryption key via an optical signal from a display, allowing the RFID tag data to be transmitted over existing wireless networks, enabling remote initialization and extending RFID tag tracking beyond the coverage of traditional RFID infrastructure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If RFID tags are tracked across large areas using traditional RFID infrastructure, then tracking coverage is improved, but infrastructure cost and complexity increase significantly
Solution Approach 1:
The patent introduces a wireless communication intermediary (such as a mobile device with display screen) that acts as a mediator between the RFID tag and the RFID reader. The intermediary receives optical signals containing RFID tag information and transmits this data wirelessly to the RFID reader, eliminating the need for direct RFID communication infrastructure across the entire tracking area. This resolves the contradiction by expanding tracking coverage without proportionally increasing RFID infrastructure complexity.
Solution Approach 2:
The patent replaces the traditional RFID electromagnetic field-based reading mechanism with an optical signal transmission mechanism using displays and optical sensors. Instead of relying on RFID readers to actively scan and read tags across large areas, the system uses passive optical displays that can be viewed by any device with an optical sensor, thereby expanding coverage without increasing RFID infrastructure.
2Reliability
If RFID tags are initialized manually at locations proximate to RFID readers, then initialization security is improved, but initialization time and labor requirements increase
Solution Approach 1:
The patent enables self-service initialization where the RFID tag information is automatically captured through optical scanning of display screens. Users can independently initialize tags by viewing displayed information with their device's optical sensor, eliminating the need for manual entry and reducing dependence on proximity to RFID readers. This maintains security through encrypted optical transmission while dramatically reducing initialization time and labor.
Solution Approach 2:
The system performs preliminary action by pre-displaying the RFID tag information (including encrypted data) on a display screen before the actual initialization process. This allows the receiving device to capture and store the information in advance, enabling fast initialization without requiring real-time interaction with RFID readers, thus reducing time loss while maintaining security protocols.
3Adaptability or versatility
If RFID infrastructure is deployed extensively to enable remote initialization, then service accessibility is improved, but deployment cost increases
Solution Approach 1:
The patent makes the display device serve multiple functions: it acts as both an information display terminal and an RFID tag initialization interface. The same display screen that shows information to users also transmits encrypted RFID tag data that can be captured by optical sensors. This multi-functionality eliminates the need for separate RFID initialization infrastructure, improving service accessibility while avoiding additional deployment costs.
Solution Approach 2:
The system creates an optical copy of the RFID tag information displayed on a screen, which can be captured and transmitted wirelessly. This optical copying mechanism allows RFID initialization to occur anywhere with display capability, extending service accessibility to remote locations without requiring physical RFID infrastructure deployment, thereby avoiding additional costs.
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
This solution minimizes the need for extensive RFID infrastructure, reduces labor and time required for initialization, and allows RFID tag services to be extended outside traditional network areas, enhancing efficiency and cost-effectiveness in tracking and monitoring applications.
Implementation Method 1
an RFID repeater with an optical reader and wireless transmitter that receives a unique identifier and encryption key via an optical signal from a display
Implementation Method 2
transmits a communication comprising radio frequency identification information associated with the radio frequency identification tag and the unique identifier via the radio frequency identification repeater to a wireless access point
Data Source
AI summary
A method and apparatus for initializing a radio frequency identification tag are disclosed. For example, the method receives an optical signal having a unique identifier and an encryption key from a display by a radio frequency identification repeater associated with the radio frequency identification tag, wherein the radio frequency identification repeater comprises an optical reader. The method then transmits a communication comprising radio frequency identification information associated with the radio frequency identification tag and the unique identifier via the radio frequency identification repeater to a wireless access point, wherein the communication is encrypted using the encryption key.