Navigation System Access Protection Scheme

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Solution Overview

Problem

Navigation systems lack secure access control mechanisms to protect navigation data, allowing unauthorized access and distribution of sensitive map data.

Innovation Solution

A navigation system employs an access protection scheme using a combination of an access protection key and access code to securely store and decrypt navigation data, restricting access through alphanumeric sequences or cryptographic methods, ensuring only authorized users can access the data.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If navigation data is stored in a writable memory without access control, then ease of operation is improved, but security is worsened allowing unauthorized access and distribution

Engineering Contradiction:

Improveaccess to navigation dataVSAvoidunauthorized access and distribution

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

An access control module is introduced as an intermediary between the navigation data stored in memory and any access requests. This module verifies authorization credentials before permitting data access, thereby maintaining ease of operation for authorized users while blocking unauthorized access and distribution attempts.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Object-affected harmful factors

If access protection mechanisms are implemented, then security is improved, but device complexity is worsened

Engineering Contradiction:

Improveunauthorized access preventionVSAvoidaccess control system structure

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The access control system is segmented into distinct functional modules: an access control module for verification, a memory module for data storage, and a navigation unit for data processing. This segmentation allows each module to perform its specific function efficiently, improving security while managing complexity through modular design.

Inventive Principle:

Principle #1Segmentation

3Productivity

If navigation data is transferred from disk to memory, then productivity is improved, but security is worsened due to loss of disk-based access control

Engineering Contradiction:

Improvenavigation data access speedVSAvoidunauthorized data distribution

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

Access control verification is performed in advance before navigation data is transferred from memory to the navigation unit. The access control module checks authorization credentials beforehand, ensuring that only authorized users can access and utilize the data, thereby maintaining security while enabling fast memory-based operations.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS9970773B2Navigation system for accessing navigation data stored in an access-protected manner

Publication Date: 2018.05.15 HARMAN BECKER AUTOMOTIVE SYST GMBH

AI summary

A navigation system stores navigation data in an access-protected manner. The navigation system includes navigation units that utilize the navigation data retained in a memory. The system includes a module for authenticating the access code. The system may include a module for generating an access protection code for storing the navigation data in memory. The access code and the access protection code may be used in a complementary scheme to secure the navigation data set.