Electronic Label Using Light Blocking Device for Secure Optical Data Transmission
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Solution Overview
Problem
RFID systems face challenges with data readability at long distances and security due to omni-directional signal broadcasting, leading to unintended data reception and potential interception.
Innovation Solution
An electronic label system that uses a reflective component and a light blocking device, controlled by a processing device, to communicate data via light reflections, allowing secure and directional data transmission over longer distances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If RFID systems use omni-directional signal broadcasting for data transmission, then data communication coverage is improved, but security deteriorates due to unintended data reception and potential interception
Solution Approach 1:
The patent applies asymmetry by transitioning from omni-directional RF signal broadcasting to directional optical communication. The electronic label and reader use focused light beams transmitted along specific line-of-sight paths, creating asymmetric communication channels that are inherently more secure. This directional approach maintains communication coverage while eliminating the security vulnerabilities of omnidirectional broadcasting, as intercepted signals would require physical line-of-sight access rather than passive reception from any direction.
Solution Approach 2:
The patent replaces the electromagnetic RF field-based communication system with an optical communication system using visible or infrared light. This substitution fundamentally changes the transmission medium from radio waves that propagate omnidirectionally through space to light beams that can be focused and directed along specific paths, thereby maintaining coverage while improving security through controlled transmission paths.
2Length of stationary object
If RFID systems transmit data over long distances, then communication range is improved, but data readability and reliability deteriorate
Solution Approach 1:
The patent transitions communication from the electromagnetic RF spectrum to the optical spectrum, effectively using another dimension of the electromagnetic spectrum. Optical communication using visible or infrared light enables longer transmission distances with higher reliability because light beams can be focused into narrow paths that maintain signal intensity over distance, unlike RF signals that disperse omnidirectionally. The focused optical path preserves data readability while extending communication range.
Solution Approach 2:
The patent substitutes RF electromagnetic field transmission with optical beam transmission. This replacement enables long-distance communication with maintained reliability because optical beams can be collimated and directed along specific paths, reducing signal dispersion and interference. The optical system provides more reliable data transmission over extended ranges compared to the omnidirectional RF approach.
3Ease of operation
If RFID systems broadcast data omni-directionally, then ease of operation is improved, but loss of information increases due to unintended data reception
Solution Approach 1:
The patent implements asymmetry by creating directed, point-to-point optical communication channels between the reader and electronic label. This asymmetric approach maintains ease of operation because the system automatically establishes communication along the line-of-sight path without requiring manual configuration, while simultaneously preventing unintended data reception by limiting transmission to the specific directional path between authorized devices.
Solution Approach 2:
The patent replaces the omnidirectional RF broadcasting system with a targeted optical communication system. This substitution preserves ease of operation through automatic line-of-sight alignment while eliminating unintended data reception, as the focused light beam only reaches the intended reader device and not surrounding devices that might intercept RF signals.
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 secure and efficient data communication over longer distances, preventing unintended data reception and ensuring only intended devices receive data, while using light-based communication that is harder to intercept compared to RF signals.
Implementation Method 1
a reflective component to reflect light transmitted by a first light source
Implementation Method 2
a light blocking device to block light transmitted by a second light source
Data Source
Figure 1A~1B
Figure 2A
Figure 2B
AI summary
Systems and methods are disclosed for an electronic label system. An electronic label may include a reflective component configured to reflect light transmitted by a light source. The electronic label may also include a light blocking device configured. The light blocking device may prevent at least a portion of the light transmitted by the light source from reaching the reflective component when in a first configuration. The light blocking device may also allow the light transmitted by the light source to reach the reflective component when in a second configuration. The electronic label also includes a processing device configured to control operation of the light blocking device. The light blocking device further includes a power generation device configured to generate power for the light blocking device and the processing device.