RFID Power Signal Encoding for Dynamic Tagged Object Interaction
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Solution Overview
Problem
Existing RFID technologies in playsets are limited by static information programmed into passive RFID tags, restricting interactive capabilities.
Innovation Solution
Incorporating additional circuitry and modulation techniques in RFID platforms and objects with passive RFID tags to enable dynamic data exchange and responsive actions, such as audio and visual outputs, through RF power signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If passive RFID tags are used in playsets, then objects can be identified and preprogrammed interactions can occur, but the interaction is limited by static information programmed into the tags
Solution Approach 1:
The patent applies dynamics by transitioning from static preprogrammed interactions to dynamic responsive interactions. The RFID tag system now receives real-time commands from a reader and responds accordingly, enabling adaptive interactions based on current context rather than fixed preprogrammed sequences. This allows the system to dynamically adjust behavior based on user input and environmental conditions.
Solution Approach 2:
The patent implements feedback mechanisms where the RFID reader receives responses from the RFID tag and uses this information to adjust subsequent interactions. The system monitors the state of objects and modifies its behavior accordingly, creating a closed-loop communication system that enables more versatile and adaptive interactions compared to one-way preprogrammed commands.
2Adaptability or versatility
If additional circuitry and modulation techniques are incorporated to enable dynamic data exchange, then interactive play is enhanced, but device complexity increases
Solution Approach 1:
The patent applies universality by designing the RFID tag system to perform multiple functions: identification, power reception, command reception, and response transmission all occur through the same RFID communication interface. This multi-functional approach reduces the need for separate dedicated circuits for each function, thereby managing complexity while enabling dynamic data exchange capabilities.
Solution Approach 2:
The patent utilizes parameter changes by modulating the RF signals to encode different types of data and commands. By varying parameters such as frequency, amplitude, or signal pattern, the system can transmit multiple types of information through the same physical interface, reducing the need for separate hardware channels and managing device complexity.
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
Enhances interactive play by allowing dynamic responses and conversations between RFID platforms and objects, providing more engaging and imaginative play experiences.
Implementation Method 1
An RFID reader transmits some power to a receiver, i.e., a passive RFID tag. The passive RFID tag harvests energy from the transmitted signal
Data Source
AI summary
A method conducted using a system having a first object with a first data processor, an RFID tag reader, and a first output device electrically coupled to the first data processor, and a second object with a second data processor, an RFID tag, and a second output device electrically coupled to the second data processor includes: transmitting, by the RFID tag reader to the RFID tag, a power signal with embedded input data; receiving, by the RFID tag, the power signal with the embedded input data. The embedded input data is extracted from the power signal and provided to the second data processor, and causes the second data processor to initiate an action. Responsive to receiving the power signal with the embedded input data, transmitting, by the RFID tag, response data to the RFID tag reader, wherein the first data processor processes the response data.