Camera-Based Navigation Display for Complex Junction Guidance
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Solution Overview
Problem
Existing navigation systems struggle to provide clear and concise navigation instructions, especially at complex junctions, often requiring users to switch between multiple screens and leading to confusion.
Innovation Solution
Generate a three-dimensional perspective view on a navigation device, with a camera positioned behind the current position, providing a fast forward preview of upcoming decision points and lane guidance, and adjusting the view to indicate necessary lane changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If traditional navigation systems display route information on multiple separate screens, then users can access detailed navigation instructions, but users experience confusion and difficulty in understanding complex junctions
Solution Approach 1:
The patent combines multiple navigation information displays into a single integrated three-dimensional perspective view. The camera-based system merges route guidance, junction information, and surrounding environment into one unified display, eliminating the need for users to switch between multiple screens and reducing confusion at complex junctions.
Solution Approach 2:
The patent transitions from traditional two-dimensional map displays to a three-dimensional perspective view using a camera. This dimensional change provides a more intuitive representation of the environment and route, allowing users to better understand spatial relationships and navigate complex junctions more effectively.
2Loss of information
If navigation systems provide detailed turn-by-turn instructions, then users receive comprehensive guidance, but the system complexity increases and requires multiple interfaces
Solution Approach 1:
The patent integrates multiple navigation guidance functions into a single camera-based three-dimensional view. Detailed turn-by-turn instructions, route options, and environmental context are all presented within one unified interface, reducing system complexity while maintaining comprehensive guidance.
Solution Approach 2:
The camera-based display system serves multiple functions simultaneously: it provides environmental visualization, route guidance, junction information, and turn-by-turn instructions all through a single interface, eliminating the need for separate specialized displays for each function.
3Reliability
If the camera view advances at normal speed, then the display remains synchronized with the user's actual position, but the user cannot preview upcoming decision points in advance
Solution Approach 1:
The patent implements a fast-forward mode that advances the camera view ahead of the user's current position to preview upcoming decision points and junctions in advance. This preliminary action allows users to prepare for upcoming maneuvers while maintaining the ability to synchronize with actual position through normal-speed playback when needed.
Solution Approach 2:
The patent makes the camera view dynamic by allowing it to advance at variable speeds - faster than the user's actual movement speed to enable preview of upcoming decisions, or synchronized with user position for accurate real-time guidance. This dynamic adjustment optimizes the display based on the user's immediate needs.
Data Source
AI summary
A device is disclosed for generating navigation instructions for display on a display device of a portable navigation device, comprising: means for accessing a repository storing digital map data pertaining to a navigable network along which the navigation device can travel; means for generating, for display on the display device, a three-dimensional perspective view of a model representative of the map data as though from a camera positioned at an elevation and pitch angle behind a current position of the portable navigation device, that is updated to follow the device as it travels along a planned route through the navigable network; and means for generating, in response to detecting that the current position of the navigation device is closer than a predetermined distance to a decision point in the planned route, a fast forward preview of the upcoming decision point by advancing the position of the camera for the three-dimensional perspective view along the planned route at a speed faster than the rate of travel of the current position of the device. Methods of operation of the device, and related computer software, are also disclosed.