Vehicle Key Control Using Audio Sequences Over Communication Networks
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Solution Overview
Problem
Existing methods for remotely locking or unlocking vehicles via radio communication require the user to be within a short distance and the vehicle to be connected to a packet-switched network, limiting remote control capabilities.
Innovation Solution
A method using a communication network capable of transferring audio data, where a sequence of sound sequences is transmitted between a remote unit and a vehicle to perform key-related functions, including authentication to prevent unauthorized access, allowing remote control without proximity or packet-switched network requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If radio communication is used for remote control, then the vehicle can be locked or unlocked remotely, but the user must be within a short distance range of the vehicle
Solution Approach 1:
The patent introduces a communication network as an intermediary medium between the remote control device and the vehicle. Instead of direct radio communication requiring proximity, the system uses a networked infrastructure (such as cellular networks or other communication networks) to relay control signals, thereby extending the operational distance beyond line-of-sight radio range while maintaining secure authenticated communication.
2Length of moving object
If packet-switched communication is used for remote control, then the vehicle can be controlled remotely over long distances, but the vehicle must be capable of communicating over a packet-switched network
Solution Approach 1:
The patent designs the communication system to be universally compatible with multiple types of communication networks. The vehicle's communication interface is configured to support various network protocols and types (packet-switched, circuit-switched, cellular, non-cellular, etc.), allowing the same remote control system to function across different network infrastructures without requiring vehicle-specific modifications for each network type.
3Reliability
If sound sequences are transmitted for authentication, then unauthorized access is prevented, but the communication system becomes more complex
Solution Approach 1:
The patent implements authentication through periodic challenge-response exchanges using sound sequences. The system employs time-based challenge sequences where the vehicle sends a challenge sound sequence, the remote control device processes it according to stored authentication data, and returns a response sequence. This periodic authenticated communication establishes security without requiring complex cryptographic hardware, using temporal sequencing of audio signals instead.
Data Source
AI summary
A method for remotely controlling a system of key related functions of a vehicle, the system is connectable with a remote unit over a communication network, is capable of transferring audio data. The method includes receiving at the vehicle over the communication network a sequence for the system wherein the sequence comprises a first sound sequence, and performing a key related function in the system in response to receiving the sequence.