3D Caption Offset Data Structure for Video Playback
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Solution Overview
Problem
Current video formats do not support 3D display of captions and menu buttons, limiting the ability to provide an effective 3D viewing experience for these elements.
Innovation Solution
A data structure and recording medium that includes image data for 2D display of captions or menu buttons, along with a table containing offset information for left and right eye images, allowing for 3D display by shifting the image data based on specified offset directions and values correlated with playback time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional video format is used for displaying captions and menu buttons, then the display structure is simple and easy to implement, but 3D display capability is not supported
Solution Approach 1:
The video data is segmented into multiple layers including a first video data layer for main content and a second video data layer for captions and menu buttons. This segmentation allows independent processing and 3D display control for different elements, enabling 3D capability for captions while maintaining a manageable data structure through clear layer separation.
Solution Approach 2:
The patent introduces a new dimension of depth by implementing offset information that specifies different display positions for left-eye and right-eye images. This dimensional transformation converts 2D caption data into 3D display data by adding depth information through offset values, enabling 3D display capability without fundamentally complicating the underlying data structure.
2Adaptability or versatility
If 3D display of captions is implemented using multiple video data layers with offset information, then 3D viewing experience is enhanced, but data processing complexity increases
Solution Approach 1:
Offset information is pre-calculated and stored in the video data structure during encoding. The offset values that define the 3D position of captions and menu buttons are determined in advance and embedded in the data, eliminating the need for complex real-time calculations during playback. This preliminary action simplifies the processing burden on the playback device while maintaining high 3D display quality.
Solution Approach 2:
The system dynamically switches between 2D and 3D display modes based on the capabilities of the display device and user preferences. The video playback apparatus can adaptively adjust whether to apply the offset information for 3D display or display the content in traditional 2D mode, providing flexibility that reduces processing complexity for devices with limited 3D capabilities.
Data Source
AI summary
A data structure, recording medium, playing device, playing method, program, and program storing medium, which enable providing of a video format for 3D display, suitable for 3D display of captions and menu buttons. Caption data used for 2D display of caption and menu data used for 2D display of menu buttons are recorded in a disc as is a database of offset information, in which is described offset information, made up of offset direction representing the direction of shifting of an image for the left eye and an image for the right eye used for 3D display as to images for 2D display regarding the caption data and menu data, and an offset value representing the amount of shifting, correlated with the playing point-in-time of caption data and menu data, respectively.