Unidirectional Data Conduit for Secure Network Transfer

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Solution Overview

Problem

Existing network security mechanisms face challenges in providing secure, one-way data transfer across network boundaries, particularly in sensitive contexts like government or corporate networks, as they often rely on two-way data channels that pose security and data integrity risks.

Innovation Solution

A system and method employing unidirectional transmitters and receivers to establish a one-way conduit across network boundaries, ensuring that data can only be transmitted and not received, thereby preventing unintended data flow and maintaining high-security standards.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If two-way data channels are used for network communication, then communication flexibility and protocol compatibility are improved, but security risks and data integrity concerns worsen

Engineering Contradiction:
Improvecommunication flexibilityVSAvoiddata integrity
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The patent segments the communication channel into strictly unidirectional paths using separate physical conduits for forward and reverse communication. This segmentation eliminates the security risks of bidirectional channels while maintaining protocol compatibility through careful design of the unidirectional interfaces.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent introduces unidirectional converters as intermediary devices that translate bidirectional protocol requirements into unidirectional physical communication. These converters act as mediators that preserve data integrity by ensuring signals only flow in the intended direction while maintaining compatibility with existing communication protocols.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If unidirectional communication devices are used, then security and data integrity are improved, but device complexity and implementation difficulty worsen

Engineering Contradiction:
ImprovesecurityVSAvoidimplementation difficulty
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent uses optical copying techniques where electrical signals are converted to optical signals for unidirectional transmission. This copying approach simplifies the unidirectional conversion process by leveraging well-established optical isolation technologies while maintaining signal integrity and security.

Inventive Principle:
Principle #26Copying

Solution Approach 2:

The patent replaces complex electronic isolation mechanisms with optical transmission methods. By substituting electrical signal paths with optical paths, the system achieves inherent unidirectionality and isolation without requiring complex electronic control circuits or multiple switching mechanisms.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Speed

If optical fibers are used for unidirectional transmission, then transmission speed and bandwidth are improved, but cost and infrastructure requirements worsen

Engineering Contradiction:
Improvetransmission speedVSAvoidinfrastructure requirements
Core Design Contradiction:
SpeedVSEase of manufacture

Solution Approach 1:

The patent designs the unidirectional communication system to utilize existing optical fiber infrastructure for high-speed transmission while also being compatible with copper-based systems where optical infrastructure is unavailable. This multi-functionality approach allows the system to achieve high speeds where possible while maintaining broader deployability.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent enables dynamic selection of transmission parameters including optical vs. electrical signaling, single-mode vs. multi-mode fiber, and different wavelength configurations. This parameter flexibility allows optimization for speed when optical infrastructure exists while reducing infrastructure requirements by falling back to electrical transmission when appropriate.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS8250235B2Method and system for providing secure one-way transfer of data
Publication Date: 2012.08.21 VERIZON PATENT & LICENSING INC
  • US8250235B2 patent drawing
  • US8250235B2 patent drawing
  • US8250235B2 patent drawing

AI summary

A system including a transmitter, a receiver, and a conduit is provided. The transmitter is within a first network, and is in communication with at least one other device within the first network. The receiver is within a second network, and is in communication with at least one other device within the second network. The conduit is formed between the transmitter and the receiver, and is capable of carrying a signal transmitted from the transmitter to the receiver. To maintain the unidirectional nature of the conduit, either the transmitter is incapable of receiving any signal via the conduit or the receiver is incapable of transmitting any signal via the conduit.