Transparent Display Eye Contact Video Call
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Solution Overview
Problem
Conventional video call apparatuses fail to achieve realistic eye contact due to mismatched camera and screen positions, leading to increased manufacturing costs and complexity, especially with whole-body transparent displays that compromise readability and require additional shutters and synchronization signals.
Innovation Solution
An apparatus with a central transparent display that periodically turns on/off, allowing a camera positioned behind to capture video frames in both modes, reconstructing the output video by selectively removing or duplicating frames based on the display's state, eliminating the need for additional shutters and synchronization signals, and maintaining readability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a camera is positioned outside the display region to avoid interference, then the camera can capture video without obstruction, but the camera and screen positions become mismatched making realistic eye contact impossible
Solution Approach 1:
The camera is nested behind the transparent display, with the transparent display acting as both the display medium and the camera window. This allows the camera to be positioned at the center of the display region rather than outside, enabling realistic eye contact while maintaining video capture quality through the transparent medium.
Solution Approach 2:
The transparent display serves as an intermediary between the camera and the external environment. It allows light from the front to pass through to the camera while blocking light from the camera side, enabling the camera to capture clear video through the display without the camera being visible to the user.
2Ease of operation
If the entire display screen is formed of transparent display to enable eye contact, then the camera can be positioned behind the display, but the manufacturing cost increases and readability decreases
Solution Approach 1:
Instead of making the entire display transparent, only a local region (the display region corresponding to the camera field of view) is made transparent. This allows the camera to capture video through the transparent portion while the rest of the display maintains normal opacity for better readability and lower manufacturing cost.
Solution Approach 2:
The display is segmented into transparent and opaque regions, with the transparent portion positioned at the center where the camera needs to capture through the display. This segmentation allows the system to achieve eye contact capability only where necessary while maintaining cost-effectiveness and readability in other areas.
3Reliability
If a shutter is added to control camera photograph motion synchronized with transparent display, then video can be captured during transparent periods, but the system construction becomes complex and additional synchronization signals are required
Solution Approach 1:
The transparent display's inherent on/off switching serves the dual purpose of display control and camera shutter function. When the transparent display turns off, it automatically blocks light from the camera side, enabling video capture without requiring a separate shutter mechanism. The display's own operation provides the timing synchronization needed for video capture.
Solution Approach 2:
The transparent display performs multiple functions: it displays video content, controls lighting for the camera, and serves as the shutter mechanism for video capture. This multi-functionality eliminates the need for separate shutter and synchronization systems, reducing overall system complexity.
4Reliability
If additional shutters and synchronization signals are added to achieve eye contact video call, then video capture timing can be controlled, but the device complexity and system construction increase
Solution Approach 1:
The shutter function and synchronization control are merged into the transparent display's switching operation. The display's on/off state simultaneously controls both the visibility function and the camera capture timing, eliminating the need for separate shutter components and synchronization signal systems.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution reduces manufacturing costs, simplifies system construction and control, and maintains readability by using a central transparent display with a camera at the rear, enabling realistic eye contact video calls without the need for additional components or signal synchronization.
Implementation Method 1
a transparent display that is formed at a central part of the opaque display and is periodically turned on/off to display a video
Implementation Method 2
a camera that is formed at a rear side of the transparent display and photographs a video of a front side by penetrating the transparent display
Implementation Method 3
a video signal process unit that reconstructs an output video by controlling a video frame according to a state in which the transparent display is on/off
Data Source
AI summary
The present disclosure relates to an apparatus for an eye contact video call capable of a realistic call in eye contact with the other party. A transparent display is formed at a central part of the opaque display and a camera is formed at a rear side thereof, thereby allowing a realistic call in eye contact with the other party and at the same time, the readability to be improved even in cases of a usual display use (mode). Further, the manufacturing cost of a terminal may be reduced and an interference of an output video of a transparent display that exists in the camera photograph video may also be effectively eliminated.