Camera Credential Transfer via Audio Signal Decoding
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Solution Overview
Problem
Existing camera systems face challenges in efficiently detecting and connecting with devices operating in different wireless communication modes, particularly due to limitations in power efficiency and the need for manual credential entry.
Innovation Solution
A camera management system that enables cameras to switch between access point, ad hoc, and station modes to detect and connect with devices, while also allowing for the transfer of network credentials between devices to facilitate communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a camera operates in access point mode to enable wireless communication with other devices, then communication capability is improved, but power consumption increases
Solution Approach 1:
The camera dynamically switches between access point mode and station mode based on operational requirements. The system monitors connection status and automatically transitions modes to maintain communication capability while minimizing power consumption during capture operations.
Solution Approach 2:
A wireless communication management system acts as an intermediary between the camera and external devices. This system handles credential verification, mode switching decisions, and connection management, allowing the camera to operate in low-power station mode while maintaining communication capabilities through the intermediary.
2Use of energy by moving object
If a camera operates in station mode to save power, then power efficiency is improved, but the ability to initiate connections with other devices is limited
Solution Approach 1:
The camera performs preliminary actions by pre-establishing credential storage and pre-configuring communication parameters while in station mode. When connection opportunities arise, the camera can quickly authenticate and connect without needing to switch to access point mode, thus maintaining power efficiency while enabling connection capability.
3Reliability
If manual credential entry is required for device connections, then security is improved, but ease of operation deteriorates
Solution Approach 1:
The camera implements self-service credential management by automatically generating, storing, and exchanging cryptographic credentials with connected devices. The system performs mutual authentication and credential verification without user intervention, maintaining security while eliminating manual setup requirements.
Solution Approach 2:
Credentials are preliminarily established through automated provisioning processes during initial device pairing. The system pre-configures security credentials and establishes trust relationships before actual photo capture operations, ensuring both security and ease of operation during subsequent use.
Data Source
AI summary
An audio signal is received at a device from a smart device. The audio signal encodes network credentials for a wireless access point. The device decodes the audio signal to obtain the network credentials. The device is configured to operate in a station mode. A wireless connection between the device and the wireless access point is established using the network credentials. A command is received from the smart device via the wireless connection. A property of the device is adjusted based on the command.