IP Camera Power Switch Mechanism for Hijacking Prevention
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Solution Overview
Problem
Conventional IP cameras in computer devices are vulnerable to hijacking due to users often forgetting to turn them off, leading to potential misuse and unauthorized control by hackers.
Innovation Solution
A computer device with an embedded controller and switch circuit that allows manual control over the power supply to the IP camera, enabling users to switch the power on or off and display the power status, thereby reducing vulnerability to hijacking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the IP camera is supplied with power continuously through the USB transmission interface, then the camera remains operational and ready for use, but the camera becomes vulnerable to hijacking and misuse when the computer is off or locked
Solution Approach 1:
The power supply control is segmented from the main computer power system. An independent embedded controller manages the IP camera's power status separately, allowing the camera to be turned on/off independently of the computer's power state. This segmentation enables the camera to remain available when needed while being securely powered down when the computer is off, locked, or in sleep mode, thereby resolving the contradiction between camera availability and security.
Solution Approach 2:
An embedded controller acts as an intermediary between the computer's power system and the IP camera. This intermediary device receives power status signals from the computer and translates them into appropriate camera power control actions. The embedded controller mediates the power supply relationship, ensuring the camera is powered on only when the computer is in an appropriate state (on, awake, unlocked) and powered off when the computer is off, locked, or sleeping, thus securing the camera while maintaining ease of operation.
2Duration of action of moving object
If the IP camera remains on after computer shutdown, then the camera stays operational for quick restart, but the camera becomes susceptible to Trojan horse programs and unauthorized control
Solution Approach 1:
The embedded controller performs preliminary action by automatically powering off the IP camera before the computer shuts down. It monitors the computer's power state in advance and preemptively terminates the camera's power supply when the computer enters sleep mode, shuts down, or is locked. This preliminary action prevents the camera from remaining operational in vulnerable states, eliminating the risk of Trojan horse programs and unauthorized control while still allowing quick camera restart by simply powering the computer back on.
3Ease of operation
If manual power switching control is added to the computer device, then user control over camera power status is improved, but the device complexity increases
Solution Approach 1:
The embedded controller provides self-service functionality by automatically managing the IP camera's power status based on the computer's power state. It autonomously powers on the camera when the computer starts or wakes from sleep mode, and automatically powers it off when the computer shuts down, locks, or enters sleep mode. This self-service mechanism eliminates the need for manual user intervention while maintaining simple operation, and it reduces the visible complexity by hiding the power management logic within the embedded controller rather than exposing it through complex user interfaces.
Data Source
AI summary
A computer device having a power switch mechanism for an Internet protocol (IP) camera includes: a switch component for enabling manual switching of a power supply status of an IP camera; an embedded controller electrically coupled to the switch component for outputting a control signal indicating conduction or non-conduction of power in accordance with a status of the switch component; and a switch circuit coupled to the embedded controller and operable to open or close a route for supply of power to the IP camera in accordance with the control signal from the embedded controller. Since the embedded controller has a closed system characteristic and controls the switch circuit for making or breaking a route for supply of power to the IP camera, user control over the power supply status of the IP camera can be assured, and vulnerability of the IP camera to external threats can be reduced.