USB Data Link Control for Power-Only Transmission
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Solution Overview
Problem
Existing data transmission systems, particularly through USB ports, are vulnerable to security breaches due to unscrupulous access and identification of hardware information, posing a risk of data leakage.
Innovation Solution
A data control system that manages USB links by disabling signal transmission from transmitters to communication devices, using software to block feedback and non-control signals, ensuring only power is transmitted, and employing a blocking list to prevent hardware identification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If USB devices are connected through hot-plug ports to enable data transmission, then operational convenience is improved, but data security deteriorates due to vulnerable control signals
Solution Approach 1:
The patent extracts and removes the vulnerable control signal transmission function from the USB connection. By disabling the data link between USB devices and the computer, it eliminates the security vulnerability while preserving the power supply function, thus resolving the contradiction between operational convenience and data security.
Solution Approach 2:
The patent applies preliminary anti-action by proactively disabling the data link before any potential security breach can occur. The system preemptively blocks control signals and hardware information transmission, preventing hackers from exploiting USB ports to access sensitive data.
2Adaptability or versatility
If control signals are transmitted to identify USB devices, then device identification capability is improved, but data security deteriorates due to potential attacks on the data link
Solution Approach 1:
The patent removes the control signal transmission function from the USB connection, extracting only the essential power supply capability. This eliminates the security vulnerability associated with device identification signals while maintaining the core functionality of powering USB devices.
Solution Approach 2:
The patent introduces a mediating mechanism that allows power transmission while blocking control signals. This intermediary approach enables the system to maintain power supply functionality to USB devices while preventing unauthorized access to hardware information and control capabilities.
3Adaptability or versatility
If full bidirectional communication is enabled between transmitter and communication device, then communication functionality is improved, but security risk increases due to potential signal interception
Solution Approach 1:
The patent extracts and removes the bidirectional communication capability, retaining only the unidirectional power transmission function. By eliminating the data link that enables control signal transmission, it prevents hackers from intercepting or injecting signals while maintaining essential power supply functionality.
Data Source
AI summary
After a data link between a communication device and a transmitter is established, the transmitter is controlled for determining whether the data link between the transmitter and the communication device is to be disabled when the transmitter is prepared to transmit a first signal to the communication device, or the receiver is prepared to transmit a second signal to the communication device through the transmitter. When the data link is disabled, no signal transmitted from the transmitter is received by the communication device. The first signal and the second signal include feedback control signal information or non-control signal information.