Wireless VR Image Transmission via Server-Side Rendering
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Solution Overview
Problem
Conventional virtual reality (VR) systems are limited by cables that restrict user movement and require a connected PC for high-specification VR experiences, while mobile devices struggle to drive high-specification VR games or reproduce high-resolution images due to hardware limitations.
Innovation Solution
A method for transmitting VR images through wireless communication between an information processing device and a VR device, where the server creates an initial image frame, determines image direction data, and transmits a final image frame with meta information to a client, which measures user head motion to adjust image direction data and corrects image frames when transmission is incomplete, allowing for seamless VR experiences without cables.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a cable connects the VR device to a PC for high-specification VR experiences, then the VR image quality and processing power are improved, but the user movement freedom is restricted and safety risks increase
Solution Approach 1:
The patent extracts the high-computation tasks (VR image rendering and processing) from the client device and relocates them to a remote server. The client device only needs to transmit sensor data and receive rendered images, eliminating the need for physical connection cables while maintaining high VR image quality through server-side processing power.
Solution Approach 2:
The patent introduces wireless communication as an intermediary between the client device and the server. This intermediary enables data transmission and image delivery without physical cables, resolving the contradiction between maintaining high VR quality (requiring server connection) and ensuring user movement freedom (requiring cable elimination).
2Ease of operation
If a mobile terminal is coupled to a VR device wirelessly, then user movement freedom is improved, but the ability to drive high-specification VR programs is reduced
Solution Approach 1:
The patent extracts the computationally intensive VR rendering tasks from the mobile terminal and relocates them to a remote server with superior processing capabilities. The mobile terminal retains only lightweight functions (sensor data collection and image display), thereby maintaining user movement freedom while achieving high-specification VR experiences through the server.
Solution Approach 2:
The patent implements a virtualization approach where the server creates and transmits rendered VR images to the client device. This copying mechanism allows the client to display high-quality VR content generated by the server without needing equivalent processing power, resolving the contradiction between wireless operation and processing capability.
3Ease of operation
If wireless communication is used to transmit VR images, then user movement freedom is improved, but network bandwidth consumption increases
Solution Approach 1:
The patent segments the data transmission into two parts: (1) small-sized sensor data (head position, orientation) transmitted from client to server, and (2) rendered VR images transmitted from server to client. This segmentation optimizes bandwidth usage by transmitting only necessary data in each direction, reducing overall network bandwidth consumption while enabling wireless operation.
Solution Approach 2:
The patent changes the transmission parameters by sending compressed sensor data and optimized VR images over the wireless network. The server renders images at appropriate resolutions and formats for wireless transmission, adjusting quality parameters to balance image fidelity with bandwidth consumption, thereby enabling user movement freedom while managing network resource usage.
Data Source
AI summary
Disclosed are a method for transmitting a virtual reality image, a method for reproducing a virtual reality image, and a program using the same. A method for transmitting a virtual reality image includes an operation (S120) of creating an initial image frame by a server, an operation (S140) of determining image direction data corresponding to the initial image frame, an operation (S160) of creating a final image frame by coupling the image direction data to the initial image frame as meta information; and an operation (S180) of transmitting the final image frame to a client through wireless communication.