Full-Screen TV Content Differentiation Using Temporal Frame Segmentation
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Solution Overview
Problem
Conventional methods for allowing multiple viewers to watch different full-screen television content on the same TV at the same time result in both users seeing both content regions, with each region being less than full-screen due to picture-in-picture or split-screen presentations.
Innovation Solution
A system where a source device generates a split screen or checkerboard signal, allowing a display device to render two full-screen sequential frames, with viewers using shutter or polarized glasses to selectively view odd or even frames, ensuring each user sees only their intended content in full-screen format.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If picture-in-picture approach is used to allow multiple viewers to watch different content, then different content can be displayed simultaneously, but both users see both pictures and each picture is less than full-screen
Solution Approach 1:
The display time is segmented into alternating odd frames and even frames, with each frame dedicated to a different content region. Shutter glasses are segmented into synchronized left and right lenses that alternately block or transmit frames, allowing each viewer to see only their designated content in full-screen format
Solution Approach 2:
The system uses periodic alternating display of odd frames and even frames at a synchronized rate. The shutter glasses periodically open and close in sync with the frame rate, creating a rhythmic switching mechanism that delivers full-screen content to each viewer sequentially without overlap
2Adaptability or versatility
If split-screen presentation is used to provide user specific content, then different content can be shown for different users, but both users see both halves of the screen and each content region is one half of full screen
Solution Approach 1:
The display is segmented into temporal slots (odd frames vs. even frames) rather than spatial segments. Each viewer receives complete control of the full screen during their designated temporal slot, eliminating the need to share screen space and providing immersive full-screen viewing experience for each user
Solution Approach 2:
The system dynamically switches between different content regions based on the frame number (odd vs. even). The shutter glasses dynamically adjust their lens state in sync with the frame rate, creating a dynamic viewing experience where each user sees full-screen content without the static compromise of split-screen
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
Enables multiple viewers to simultaneously watch different full-screen content on a single TV without the drawbacks of conventional split-screen or picture-in-picture approaches, with each user seeing their content in full-screen resolution.
Implementation Method 1
A first user wearing a pair of shutter glasses has the shutter glasses synced to a television display so that both lenses are open to allow viewing of the odd frames but are closed to block the even frames
Implementation Method 2
A second user wearing a pair of polarized glasses that have another polarization where the television display provides the odd frames with a non-matching polarization and even frames with a matching polarization such that the second user only sees the even frames
Data Source
AI summary
Different full screen content is displayed on the same television at the same time from the perspective of the viewer by displaying as the content as two full screen sequential frames. The different full screen content may be provided as a single combined frame signal such as a side-by-side, top-bottom, or checkerboard signal which is then displayed as two sequential full screen frames. Configured glasses such as polarized or shutter are used to view the different content as full screen content where one pair of configured glasses views an initial one of the sequential frames but blocks the subsequent one and another pair of configured glasses blocks the initial one of the sequential frames and views the subsequent one. Shutter glasses have both lenses open during the initial frame and both closed during the subsequent one. For polarized glasses, the initial frame has a polarization matching both lenses of one pair of glasses while the subsequent frame has a polarization that differs from both lenses.