Virtual Display via Unidirectional Optical Channel
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Solution Overview
Problem
High-security systems, such as critical infrastructure, face challenges in preventing unauthorized access and modification due to the complexity and security risks associated with connecting commonly available devices, which can introduce security risks and require system downtime for maintenance.
Innovation Solution
A unidirectional communication channel using an optical transmitter and receiver allows for secure information transmission from a transmitting device to a receiving device, such as a smartphone, without the risk of remote attacks, using a wireless interface that reduces security risks and simplifies information retrieval.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If commonly available devices are connected to high-security systems for information access, then ease of operation is improved, but security risks increase
Solution Approach 1:
The communication interface is segmented into unidirectional channels: an optical transmitter in the secured device and an optical receiver in the external device. This segmentation allows information to flow only from the secured device to the external device, eliminating bidirectional communication risks while maintaining ease of access.
Solution Approach 2:
An optical communication interface serves as an intermediary between the high-security system and commonly available devices. The optical transmitter converts electrical signals to optical signals for transmission, and the optical receiver converts them back, providing a secure bridge that prevents direct electrical connection and associated security risks.
2Loss of information
If display elements are integrated into the transmitting device, then information display capability is improved, but device complexity and maintenance requirements increase
Solution Approach 1:
The display function is extracted from the transmitting device and relocated to the receiving device. The transmitting device only needs to emit optical signals, while the receiving device contains the display elements (such as an LCD screen). This extraction eliminates the need for complex integrated display systems in the transmitting device while maintaining full information display capability.
Solution Approach 2:
Instead of having the transmitting device directly display information, the information is transmitted optically and copied/reconstructed on the receiving device's display. This allows the display functionality to exist separately from the information source, reducing complexity in the transmitting device.
3Adaptability or versatility
If bidirectional communication protocols are used for device connectivity, then adaptability is improved, but security risks and implementation complexity increase
Solution Approach 1:
The communication protocol is made asymmetric by implementing only the transmit function in the secured device and the receive function in the external device. This asymmetric unidirectional communication eliminates the need for complex bidirectional protocol handshaking, error checking, and collision avoidance mechanisms while maintaining adaptability to various external devices.
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 enhances the security and reliability of high-security systems by allowing operators to use commonly available devices to access information without compromising the system's security, reducing maintenance disruptions, and minimizing the risk of unauthorized access.
Implementation Method 1
A unidirectional communication channel using an optical transmitter and receiver allows for secure information transmission
Implementation Method 2
A unidirectional communication channel using an optical transmitter and receiver allows for secure information transmission from a transmitting device to a receiving device
Data Source
AI summary
The present disclosure pertains to systems and methods for generating a virtual display using a unidirectional communication channel. In one embodiment, a system may comprise a transmitting device including a processing subsystem to generate a representation of an encoded signal comprising information to be displayed on a virtual display. A virtual display transmission subsystem may transmit the encoded signal. A receiving device may comprise a virtual display reception subsystem to receive the encoded signal. A processing subsystem may extract the information to be displayed on the virtual display from the encoded signal and generate a representation of the virtual display. A virtual display subsystem may display the representation of the virtual display. The virtual display transmission subsystem and the virtual display reception subsystem may create a unidirectional communication channel from the transmitting device to the receiving device.