Wireless Handover for Mixed Reality Displays
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Solution Overview
Problem
Existing mixed reality (MR) systems face interruptions and inefficiencies during wireless access point handover, leading to delayed image rendering and increased apparatus complexity, which affects user experience and safety, especially when moving over wide areas.
Innovation Solution
An image display system that includes an image display apparatus and an image processing apparatus, utilizing multiple wireless access points for seamless communication, with a determination unit to assess the need for handover and a switching instruction unit to manage the transition, ensuring continuous display of captured images until new access point connection is established.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If wireless access point handover is implemented in MR systems, then coverage area is extended, but image rendering is interrupted and system complexity increases
Solution Approach 1:
The system performs preliminary actions by establishing connection to the target wireless access point before disconnecting from the current one. The image processing apparatus is instructed to connect to a target access point in advance, and the HMD maintains connection to the current access point until the new connection is established, preventing rendering interruptions during handover.
Solution Approach 2:
The system uses an intermediary control mechanism where the image processing apparatus sends handover instructions to both the wireless communication unit and the display control unit. This intermediary coordination ensures that the HMD smoothly transitions between access points while maintaining continuous image rendering by displaying captured images during the transition period.
2Reliability
If multiple wireless access points are used for seamless handover, then service continuity is improved, but apparatus complexity increases
Solution Approach 1:
The image processing apparatus performs multiple functions: it processes images, manages wireless communication protocols, determines handover timing, and controls display operations. By making the image processing apparatus universal and multi-functional, the system avoids adding separate dedicated units for each function, thereby maintaining service continuity while limiting the increase in apparatus complexity.
Solution Approach 2:
The system merges the handover control functionality into the existing image processing apparatus rather than adding separate handover management hardware. The display control unit is integrated with the image processing apparatus, allowing it to coordinate image rendering and wireless handover operations through a unified control structure.
3Stability of the object's composition
If handover determination and switching instructions are added, then handover smoothness is improved, but processing time increases
Solution Approach 1:
The determination unit identifies handover timing in advance by monitoring signal strength or connection quality metrics. Once handover is determined to be necessary, the switching instruction unit immediately initiates the connection to the target access point while the display control unit continues rendering captured images, minimizing the perceived processing time and maintaining handover smoothness.
Solution Approach 2:
The display control unit maintains continuous display of captured images from the image capturing unit throughout the handover process. This continuous useful action ensures that the user experiences no interruption in the mixed reality view, making the handover smooth even though determination and switching instructions are being processed in the background.
Data Source
AI summary
Upon receiving a communication switching instruction from a first wireless access point used for communication with an image processing apparatus, an image display apparatus disconnects communication with the first wireless access point. Simultaneously, the image display apparatus transmits, to a second wireless access point, a link request to establish communication with the second wireless access point of a new communication destination included in the switching instruction. The image display apparatus displays, on a display unit, a captured image continuously acquired from am image capturing unit until switching from the first wireless access point to the second wireless access point finishes as communication destination switching.