Neighborhood Map Sharing for Precise Multi-Device Hologram Alignment
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Solution Overview
Problem
Current methods for enabling multiple devices using 6-DoF tracking to share a common spatial understanding of their positions relative to a physical environment and each other are hindered by inefficiencies, such as the need for external sensors, high data transmission requirements, and potential loss of local map data.
Innovation Solution
A computing device and method that transmit a relevant subset of map data, called a neighborhood, to enable multiple display devices to share a mutual spatial understanding by displaying a shared hologram at the same exact location in the physical environment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If all map data is transmitted between devices to enable shared spatial understanding, then coordinate alignment accuracy is improved, but data transmission requirements and network bandwidth increase significantly
Solution Approach 1:
The patent extracts and transmits only the essential subset of map data (neighborhood data) required for coordinate alignment rather than complete map data. This extraction principle reduces data transmission volume while maintaining sufficient accuracy for shared spatial understanding between devices.
Solution Approach 2:
The patent applies local quality by transmitting map data with varying levels of detail based on spatial relevance. Neighborhood data surrounding the target location is transmitted with higher precision, while distant areas receive less detailed or no data, optimizing the balance between alignment accuracy and transmission efficiency.
2Reliability
If external sensors are used to establish common spatial understanding between devices, then positioning reliability is improved, but device complexity and system cost increase
Solution Approach 1:
The patent uses one device's map data as a reference copy to establish coordinate systems for other devices. Instead of requiring each device to independently capture environmental features or use external sensors, the system copies spatial information from one device's map to align other devices' coordinate systems, reducing hardware complexity while maintaining positioning reliability.
3Measurement precision
If complete map data is shared between devices, then spatial understanding accuracy is improved, but processing time and computational resources increase
Solution Approach 1:
The patent extracts only the necessary neighborhood portion of map data required for the current spatial context rather than processing complete map data. This extraction significantly reduces computational load and processing time while maintaining sufficient spatial understanding accuracy for the task at hand.
4Manufacturing precision
If high-resolution map data is transmitted to ensure hologram placement precision, then manufacturing precision is improved, but data transmission requirements and storage needs increase
Solution Approach 1:
The patent applies local quality by providing high-resolution map data only for the immediate neighborhood surrounding the target location where holograms will be placed. Distant or less relevant areas receive lower resolution or no data, optimizing the balance between hologram placement precision and data storage requirements.
Data Source
AI summary
A computing device and method are provided for transmitting a relevant subset of map data, called a neighborhood, to enable mutual spatial understanding by multiple display devices around a target virtual location to display a shared hologram in the same exact location in the physical environment at the same moment in time. The computing device may comprise a processor, a memory operatively coupled to the processor, and an anchor transfer program stored in the memory and executed by the processor.