Projector Position Control for Real-Time User Tracking in Video Calls
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Solution Overview
Problem
Existing video call technologies using VR equipment or multiple sensors and output apparatus are bulky, have limited sensing and output ranges, and require complex installations, hindering real-time user position sharing without user-worn equipment.
Innovation Solution
An electronic apparatus with a projector, memory, communicator, and processor that adjusts projection regions and moves to track user positions, using position information from an external apparatus to project images in real-time, adjusting projection directions and sizes based on sensor data and map information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If VR equipment is used to achieve 3D effect in video calls, then participants can feel like they are present in the same space, but the equipment becomes bulky and heavy requiring users to wear it
Solution Approach 1:
The patent uses projection to create a visual copy of the remote participant in the user's physical space, eliminating the need for heavy VR headsets. The projector displays the remote user's image on a screen or wall, providing a 3D spatial presence effect without requiring users to wear bulky equipment.
Solution Approach 2:
The patent replaces the mechanical VR headset system with an optical projection system. Instead of using mechanical displays in front of users' eyes, the system uses light projection to create the 3D presence effect, substituting a lightweight optical system for heavy mechanical equipment.
2Reliability
If multiple sensors and output apparatus are installed on the ceiling to achieve position tracking, then real-time user position sharing is enabled, but the installation process becomes complex and the sensing range is limited
Solution Approach 1:
The patent makes the mobile device serve multiple functions: it acts as both the user interface for video calls and the position tracking sensor. The device's camera and sensors are used for both capturing video and determining spatial position, eliminating the need for separate ceiling-mounted sensor systems.
Solution Approach 2:
The mobile device tracks its own position and the position of the remote participant using its built-in sensors and camera. The device serves itself by using its own components for position determination, eliminating the need for external infrastructure like ceiling-mounted sensors.
3Area of stationary object
If ceiling-mounted output apparatus are used to project images, then large projection area is achieved, but the installation process becomes complex and the output range is limited
Solution Approach 1:
The patent uses a mobile projector that can dynamically change its position and projection direction, unlike fixed ceiling-mounted apparatus. The projector can be moved to different locations and angled to project images on various surfaces throughout the room, providing flexibility without complex installation.
Solution Approach 2:
The patent enables projection on multiple surfaces including walls, floors, and ceilings by moving the projector to different positions and orientations. This transforms the projection from a single fixed ceiling location to multiple dimensional possibilities throughout the three-dimensional space of the room.
Data Source
AI summary
There is provided an electronic apparatus including a projector, memory storing at least one instruction, and at least one processor. The at least one instruction, when executed by the at least one processor, cause the electronic apparatus receive first position information from an external apparatus, control the projector to project a first image onto a first projection region obtained based on the first position information; receiving second position information different from the first position information while the first image is projected onto the first projection region, obtain a second projection region different from the first projection region based on the second position information; and control the projector to project a second image corresponding to the second position information onto the second projection region.