In-Vehicle Audio Stream Handover Based on Playback Category
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Solution Overview
Problem
Current audio stream processing methods in vehicles lack flexibility, as they automatically switch the play device based on connection status without considering the type of audio stream, leading to inflexible entertainment options and potential privacy issues when a user moves from inside to outside a vehicle.
Innovation Solution
An audio stream processing method that determines whether to switch the play device back to a terminal device based on the category of the audio stream being played, using audio signals to detect the user's location and allowing for flexible switching between categories, ensuring entertainment continuity and privacy preservation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If audio data is transmitted without encryption or authentication, then transmission speed is fast, but security is compromised and unauthorized access occurs
Solution Approach 1:
The patent applies preliminary action by performing encryption and authentication operations on audio data before transmission. The audio data is encrypted using AES algorithms and authenticated using HMAC-SHA256 before being sent over the network, ensuring security is established in advance rather than adding complexity during real-time transmission.
Solution Approach 2:
The patent introduces an intermediary mechanism by using a security module that handles encryption, decryption, and authentication operations separately from the main audio processing chain. This intermediary security layer manages cryptographic keys and certificates, isolating complex security operations from the core audio transmission pathway.
2Reliability
If audio data is encrypted and authenticated before transmission, then security is improved, but processing time increases
Solution Approach 1:
Encryption and authentication are performed in advance before the audio data enters the transmission pipeline. The audio file is encrypted using AES-256 and authenticated with HMAC-SHA256 during the file preparation phase, so that during playback and transmission, the data is already secured, minimizing real-time processing delays.
Solution Approach 2:
The patent uses efficient cryptographic parameters and algorithms optimized for audio data characteristics. By selecting appropriate key lengths, block sizes, and authentication tags tailored to audio streaming requirements, the processing overhead is minimized while maintaining strong security.
3Reliability
If address information is not validated, then processing is simple, but network security is compromised and attacks can occur
Solution Approach 1:
The patent performs preliminary validation of address information before audio data transmission. The client device validates the server's digital certificate and the server validates the client's address and credentials before establishing the audio stream, preventing unauthorized access and network attacks in advance.
Solution Approach 2:
The patent implements feedback mechanisms where address validation results are checked and verified during the connection establishment phase. The system provides feedback loops that verify certificate authenticity, address format correctness, and authorization status, ensuring only valid addresses proceed to audio transmission.
Data Source
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AI summary
An audio stream processing method, an address processing method, and a related device are provided. The method may be applied to the field of intelligent vehicles. The method is applied to a data processing system. The data processing system includes a first terminal device and a vehicle. The method includes: The first terminal device establishes a connection to the vehicle, and switches a play device of audio streams in a first category and a second category from the first terminal device to the vehicle; and in a process in which the first terminal device and the vehicle are in a connected state, when detecting that the first terminal device is moved from the inside of the vehicle to the outside of the vehicle, obtains a target category corresponding to the target audio stream being played by the vehicle. The target audio stream is generated by the first terminal device and sent to the vehicle. The vehicle continues to play the target audio stream if the target category is the first category. It can be determined, based on a specific type of an audio stream being played by the vehicle, whether to switch a play device of the audio stream back to the first terminal device, thereby improving flexibility of an audio stream play process.