Secure Data Transmission via Optical and Audio Signals
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Solution Overview
Problem
In situations where conventional communication methods like USB, SD, WiFi, or Bluetooth are unavailable or restricted, there is a need for securely obtaining data from a device without a traditional software connection.
Innovation Solution
The method involves encrypting data on a device, dividing it into portions, and broadcasting these portions as graphical animations or audio signals, allowing secure transmission and reception without a conventional connection, using techniques like AES encryption and Base64 encoding, with sequence numbers for reassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional communication connections (USB, SD, WiFi, Bluetooth) are used to transmit data, then data transfer is possible, but the connection may be prohibited for security reasons or the devices may lack the necessary communication capabilities
Solution Approach 1:
The patent replaces conventional software-based communication mechanisms (USB, SD, WiFi, Bluetooth) with an optical signaling system using visible light animations displayed on the source device screen. The target device captures these visual signals through its camera, enabling data transfer without requiring traditional communication interfaces or network connections, thus bypassing security restrictions while maintaining data transmission capability
Solution Approach 2:
The patent introduces an intermediary encoding system that converts data into visual light patterns displayed on the source device. This intermediary representation allows data to be transmitted through a medium (visual display) that does not trigger security protocols, while the target device decodes these patterns back into usable data, effectively mediating the transfer between restricted devices
2Reliability
If data is transmitted through visual light animations, then security restrictions are bypassed, but the data transmission speed is reduced compared to conventional methods
Solution Approach 1:
The patent divides the data transmission process into discrete visual frames or light patterns displayed sequentially on the source device screen. Each frame represents a segment of the overall data, and the target device captures these segments in sequence. This segmentation allows the system to maintain security compliance through visual transmission while optimizing the transmission rate by controlling the display refresh rate and frame duration
Data Source
AI summary
A first device transmits data as encrypted portions that are communicated to one or more second devices as one or more of: a graphical animation rendered to a screen on a display of the first device and audio played out a speaker of the first device.