Passive RFID Tag Large Data Transfer via Burst Command Protocol
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Solution Overview
Problem
Conventional passive RFID systems are limited in transmitting and processing large data such as audio, video, and files due to power constraints, typically allowing only short-range communication and small data size transfers.
Innovation Solution
An RFID reading apparatus and passive RFID tag system that expands the command-response structure for passive RFID communication protocols to enable large data transfer by using transmission packets with a BURST command for data transfer and BURST ACK command for confirmation, allowing for the transmission of data without storing it in the RFID tag's memory, thus reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If conventional passive RFID communication protocol is used, then power consumption is low and communication is simple, but data transfer size is limited and communication range is short
Solution Approach 1:
The patent segments large data transfer into multiple smaller packets using BURST commands. Each BURST command transfers a portion of the total data, allowing the system to handle large data volumes by dividing them into manageable chunks that can be transmitted sequentially with intermediate power states, thus resolving the contradiction between large data transfer and power consumption.
Solution Approach 2:
The patent implements periodic action through BURST ACK commands that periodically request acknowledgment and status checks during data transfer. This allows the system to pause and resume operations, manage power consumption by entering low-power states between bursts, and ensure data integrity while transferring large volumes of information.
2Quantity of substance
If conventional passive RFID system stores data in tag memory, then data can be retained, but power consumption increases and data capacity is limited
Solution Approach 1:
The patent extracts the data storage function from the passive RFID tag itself and relocates it to an external data processing device. The tag only needs to handle temporary data reception and forwarding, while the external device provides the bulk storage capacity. This eliminates the need for large onboard memory in the tag, reducing device complexity while dramatically increasing available data capacity.
Solution Approach 2:
The patent introduces an external data processing device as an intermediary between the RFID tag and the final data destination. This intermediary handles the heavy lifting of data storage and processing, allowing the passive tag to remain simple while enabling large data transfers through the coordinated BURST command protocol.
3Reliability
If data is transferred through multiple packets, then data integrity can be verified, but communication time increases
Solution Approach 1:
The patent implements feedback mechanisms through BURST ACK commands that provide real-time acknowledgment of data reception status. The receiving device sends feedback packets confirming successful reception or reporting errors, allowing the transmitting device to adjust and retransmit only when necessary. This efficient feedback loop ensures data integrity while minimizing redundant transmissions and overall communication time.
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
Enables the transfer of large data files like audio and video directly to a data processing device, expanding the functionality of objects equipped with passive RFID tags, such as displaying temperature information wirelessly, while minimizing power consumption and increasing communication range.
Implementation Method 1
a communication unit which converts the generated transmission packet into an RF signal and transfers the converted RF signal to the passive RFID tag
Implementation Method 2
The RFID tag uses an antenna and a rectifier to rectify a carrier frequency through the antenna to a direct current voltage
Data Source
AI summary
Provided are a radio frequency identification (RFID) system including an RFID reading apparatus and a passive RFID tag and a method of transferring and/or processing data using the same. An RFID reading apparatus includes a data input unit which receives data to be transferred to a passive RFID tag, a control unit which generates a transmission packet containing the data and a command directing data transfer, and a communication unit which converts the generated transmission packet into an RF signal and transfers the converted RF signal to the passive RFID tag.