Locked-Screen Navigation Wake-Up for Continuous Turn Guidance
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Solution Overview
Problem
Existing map-based navigation applications often rely on inefficient 2D maps due to the processing demands of 3D maps, leading to slow and inadequate navigation experiences.
Innovation Solution
A navigation application with features like multiple views (2D and 3D turn-by-turn navigation), smooth transitions, realistic road signs, dynamic instructions, voice recognition, and integration with other applications, utilizing a virtual camera for adjustable perspectives and gestural inputs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If 3D maps are used for navigation, then the navigation experience becomes more immersive and realistic, but the processing demands increase causing slow and inefficient performance
Solution Approach 1:
The patent segments the navigation display into multiple independent viewports (2D map view, 3D perspective view, satellite view, street view) that can be rendered separately and composited together. This allows the system to use 3D graphics for specific immersive elements while maintaining 2D rendering for the base map, balancing visual quality with processing efficiency.
Solution Approach 2:
The patent implements a hybrid rendering approach that combines 2D map projections with 3D perspective views. The system renders certain elements (buildings, terrain, route visualization) in 3D while keeping the base map in 2D, and uses camera transformation matrices to switch between dimensions seamlessly, achieving immersive navigation without full 3D rendering overhead.
2Adaptability or versatility
If multiple view modes (2D and 3D) are implemented with smooth transitions, then the navigation application becomes more versatile and user-friendly, but the device complexity increases
Solution Approach 1:
The patent creates a unified navigation framework where a single navigation engine supports multiple view modes (2D, 3D, satellite, street view) through a common architecture. The same route calculation and navigation logic serves all view types, with only the rendering layer differing. This multi-functional design reduces overall system complexity despite supporting diverse view options.
Solution Approach 2:
The patent implements dynamic view switching where the navigation system can transition between different view modes during operation based on user interaction or navigation context. The camera parameters (position, orientation, projection type) are dynamically adjusted to enable smooth transitions between 2D and 3D perspectives without requiring separate navigation instances for each mode.
3Duration of action of stationary object
If the navigation application operates in the background on locked device, then the navigation guidance remains accessible and continuous, but the user interaction capabilities are limited
Solution Approach 1:
The patent extracts the essential navigation guidance functions (voice instructions, turn-by-turn notifications, route status) from the full navigation application interface and implements them as background services that can operate independently when the device is locked. These extracted functions provide continuous navigation guidance without requiring the full interactive UI, maintaining navigation continuity while respecting device lock state.
Data Source
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AI summary
A method comprising: providing, by a navigation application executing on an electronic device, navigation instructions on a display screen of the electronic device; executing the navigation application in a background of the electronic device; turning the display screen of the electronic device off after a lapse of a preset period of time during which the electronic device does not receive any input; turning the display screen of the electronic device on when the electronic device approaches a navigation point; and automatically executing the navigation application in a foreground of the electronic device.