Spherical Display Device Viewpoint Control via Sensor Detection
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Solution Overview
Problem
Current technologies for displaying 360-degree full-dome videos lack efficient control mechanisms for dynamically adjusting content based on user line of sight, head position, and posture, and do not effectively manage video transmission to multiple devices while ensuring privacy and quality of experience.
Innovation Solution
A display device equipped with a spherical display unit, reception and sensor units to measure user line of sight and posture, and a control unit that receives and transmits images and audio based on user measurements, along with optional features like air control, temperature control, and tactile feedback, to provide an immersive experience while managing video distribution across multiple devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a head mount display system captures a wide-angle image with wider field of view than actually displayed, then the user can freely select viewpoint position and line-of-sight direction, but the device complexity increases due to multiple sensors and control mechanisms
Solution Approach 1:
The imaging unit is designed to capture full-dome images that can be displayed on multiple types of display devices (head mount displays, dome displays, portable devices) without requiring separate imaging systems. The single imaging unit serves multiple functions: capturing 360-degree images, providing viewpoint selection, and supporting various display formats, thereby reducing overall system complexity while maintaining versatility.
Solution Approach 2:
A control device acts as an intermediary between the imaging unit and multiple display devices. The control device receives full-dome images from the imaging unit, processes them according to user-selected viewpoints, and transmits appropriate image portions to different display devices. This intermediary approach simplifies the system architecture by centralizing control logic rather than requiring complex direct connections between the imaging unit and each display device.
2Quantity of substance
If multiple display devices receive video simultaneously, then user coverage increases, but transmission bandwidth and system complexity increase
Solution Approach 1:
Instead of transmitting multiple complete full-dome images to multiple display devices, the system transmits copies of specific portions of the full-dome image that correspond to each user's selected viewpoint. The control device extracts and transmits only the necessary image segments to each device, reducing transmission bandwidth requirements and simplifying network management while still serving multiple users simultaneously.
3Ease of operation
If sensor unit continuously measures user line of sight and posture, then video display can be dynamically adjusted to user orientation, but energy consumption increases
Solution Approach 1:
The sensor unit measures user line-of-sight direction and head posture at periodic intervals rather than continuously. The control device updates the displayed image portion based on these periodic measurements, adjusting the video display to match user orientation changes. This periodic measurement approach maintains user-oriented display adjustment capability while significantly reducing energy consumption compared to continuous monitoring.
Data Source
AI summary
Provided is a display device configured to display a video, and an information processing terminal device configured to control transmission of a video to the display device.When a video-reproducing device detects a jumping movement of a user, the video-reproducing device determines that an instruction is given to move a viewpoint position to a place on which a target mark is displayed, and transmits a request for stopping transmission to a video-providing device as a transmission source of a currently displayed video, and transmits a request for starting transmission to a video-providing device as a moving destination. When transmission of a video from the video-providing device as the moving destination is started, the movement in viewpoint is achieved, and a video captured from a new viewpoint position is allowed to be viewed on the video-reproducing device.