Pseudo-travel Locus Generator for Vehicle Privacy
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Solution Overview
Problem
Existing in-vehicle systems face privacy concerns as they transmit actual travel loci, potentially revealing personal information, and there is a need for a method to provide locus-based driving support without disclosing the subject vehicle's actual travel locus.
Innovation Solution
An in-vehicle apparatus generates and transmits a pseudo-travel locus based on the lead vehicle's travel locus and the subject vehicle's current position, allowing nearby vehicles to perform driving support controls without transmitting the subject vehicle's actual travel locus.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the actual travel locus of the subject vehicle is transmitted to nearby vehicles, then driving support control can be performed accurately, but personal privacy is compromised
Solution Approach 1:
The patent generates a pseudo-travel locus that copies the essential characteristics of the actual travel locus (such as recent path segments) while modifying identifying information. This allows nearby vehicles to perform driving support control based on realistic travel patterns without exposing the driver's complete privacy, as the pseudo-locus retains functional utility while removing sensitive personal identifiers
Solution Approach 2:
The pseudo-travel locus acts as an intermediary between the actual travel locus and the driving support control system. Instead of transmitting the real travel locus directly, the system transmits this intermediate pseudo-locus that preserves the necessary spatial and temporal characteristics for safety control while filtering out sensitive personal information about destinations and travel habits
2Reliability
If the actual travel locus is transmitted, then accurate driving support control is enabled, but the system complexity increases due to privacy protection requirements
Solution Approach 1:
The patent employs copying by generating a simplified representation (pseudo-travel locus) that replicates the essential functional characteristics of the actual travel locus needed for driving support control. This approach avoids the complexity of implementing comprehensive privacy protection systems while still protecting driver privacy, as the copied pseudo-locus contains only the necessary spatial-temporal data without requiring complex encryption or data anonymization infrastructure
3Loss of information
If the actual travel locus is transmitted, then complete travel information is available for analysis, but data security risks increase
Solution Approach 1:
The system creates a pseudo-travel locus that copies only the portions of travel information necessary for driving support control (such as recent path segments and temporal patterns) while excluding sensitive destination information and complete travel histories. This reduces data security risks by limiting the amount of transmissible data while maintaining the functional completeness needed for safety applications
Data Source
AI summary
An in-vehicle apparatus and method generates a pseudo-travel locus that is used to perform a driving support control. The in-vehicle apparatus has a pseudo-locus generator for generating the pseudo-travel locus of a subject vehicle and a communication controller for controlling a transmitter to transmit the pseudo-travel locus of the subject vehicle. The pseudo-travel locus is generated from a travel locus of a lead vehicle and a current position of the subject vehicle. Therefore, a portion of the travel locus of the subject vehicle is similar to an actual travel locus of the subject vehicle. Thus, when the pseudo-travel locus is transmitted as a travel locus of the subject vehicle, nearby vehicles may perform a driving support control based on the pseudo-travel locus of the subject vehicle. As a result, the actual travel locus of the subject vehicle is not disclosed.