Route Guidance Map Streaming for Low-Spec 3D Navigation
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Solution Overview
Problem
Three-dimensional high-precision map data is difficult for low-specification electronic devices to store, process, and display due to its massive data volume and increased computational load.
Innovation Solution
An electronic device with memory for first map data and a communication module to retrieve high-resolution second map data from an external device, selectively providing only the requested information based on processing performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If three-dimensional high-precision map data is provided to low-specification electronic devices, then map detail and information completeness are improved, but data storage capacity and computational processing capability are exceeded
Solution Approach 1:
The patent segments the high-precision map data into multiple levels of detail (LOD). The map data is divided into first map data with first resolution and second map data with second resolution higher than the first resolution. This segmentation allows low-specification devices to handle only the necessary portion (first map data) while high-specification devices can access the complete high-resolution data (second map data), thus resolving the contradiction between information completeness and device processing capability.
Solution Approach 2:
The patent applies local quality by providing different resolutions of map data to different devices based on their processing capabilities. Low-specification devices receive first map data with first resolution that is sufficient for their processing capacity, while high-specification devices receive second map data with second resolution. This ensures each device receives appropriately quality-matched data without being overwhelmed by excessive complexity.
2Loss of information
If high-resolution three-dimensional map data is transmitted to all devices, then map quality and visibility are improved, but communication bandwidth and data transmission volume are excessively increased
Solution Approach 1:
The patent implements partial action by transmitting only the necessary portion of map data to each device. Instead of sending all high-resolution second map data to every device, the system transmits first map data with first resolution to low-specification devices, which is sufficient for their display and processing capabilities. This partial transmission approach maintains adequate map quality for each device's needs while significantly reducing the data transmission volume and communication bandwidth requirements.
3Measurement precision
If second map data with higher resolution is processed by low-specification devices, then map display quality is improved, but energy consumption and processing time are excessively increased
Solution Approach 1:
The patent applies parameter changes by adjusting the resolution parameter of map data according to the processing capabilities of the receiving device. Low-specification devices receive first map data with first resolution that matches their processing power, avoiding the excessive energy consumption that would result from attempting to process high-resolution second map data. This parameter adaptation ensures efficient energy utilization while maintaining acceptable display quality for each device class.
Data Source
AI summary
An electronic apparatus according to an embodiment, disclosed in the present document, includes: a memory storing first map data of a first resolution; a communication module communicating with an external electronic apparatus, the external electronic apparatus storing second map data of a second resolution higher than the first resolution and related to a three-dimensional shape; and a processor. The processor may: identify route information based on the first map data; transmit, to the external electronic apparatus, a first message related to a request for requested item information according to the processing performance of the electronic apparatus and a portion of the second map data, which corresponds to the route information, from among the entire second map data; and in response to the first message, receive, from the external electronic apparatus, the requested item information and the portion of the second map data corresponding to the route information.