Interlaced 3D Video Format Conversion for Display Compatibility
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Solution Overview
Problem
The existing Blu-ray disc system and HDMI interface face challenges in supporting interlaced 3D video formats, as most players are designed for progressive formats, and not all display devices can handle interlaced frame packing, leading to compatibility issues and potential quality loss when trying to play Full HD interlaced 3D content.
Innovation Solution
A video processing device that receives high-resolution interlaced 3D video data, processes it, and converts it into a lower resolution side-by-side or top-bottom format supported by the display device, using a selection mechanism based on display capability data to ensure compatibility and maintain video quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the video processing device outputs high-resolution interlaced 3D video data, then the video quality is improved, but the compatibility with display devices is worsened
Solution Approach 1:
The video processing device dynamically adapts the output format based on display capability data received from the connected display device. The system switches between progressive and interlaced 3D formats, and between different resolutions (1080p, 720p), depending on what the display device can support, as indicated by the EDID information parsing and format selection logic
Solution Approach 2:
The system changes key parameters of the video signal including resolution (1920x1080 vs 1280x720), scan type (progressive vs interlaced), and frame rate (24fps vs 50/60fps) based on the capabilities detected from the display device, allowing optimal quality within compatibility constraints
2Adaptability or versatility
If the system supports multiple 3D display formats, then the adaptability to different devices is improved, but the device complexity is worsened
Solution Approach 1:
The video processing device is designed to handle multiple 3D formats (side-by-side, top-bottom, frame-packed progressive and interlaced) and convert between them using a single unified processing architecture. The system can output various formats including 1080p24, 720p50, and interlaced variants, all through one device without requiring separate dedicated hardware for each format
Solution Approach 2:
The system uses an intermediate processing stage that receives various input formats and converts them to the appropriate output format based on display capabilities. This intermediary conversion process handles the complexity internally while presenting a simple interface to both input and output sides
3Ease of operation
If the display device does not support interlaced frame packing, then the ease of operation is improved, but the ability to display interlaced 3D content is worsened
Solution Approach 1:
Instead of requiring the display device to support interlaced frame packing, the system inverts the approach by converting the interlaced content into progressive formats that the display device can natively support. The complexity is moved from the display device to the video processing device, allowing simple displays to show interlaced 3D content through format conversion
Data Source
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Figure 3
AI summary
A video processing device (100) for processing 3D video is coupled to a 3D display device (120). The device receives the 3D video data according to a high resolution interlaced 3D format. A video processor (106) generates a 3D display signal according to a display format. 3D display capability data indicates at least one interlaced 3D display format accepted by the 3D display device, the interlaced 3D display format having a lower resolution than the high resolution interlaced 3D format. The device has a storage unit (21, 31) for storing the 3D display capability data and 3D conversion capability data. The 3D conversion capability data indicates a capability of the video processing device for interlaced down conversion for enabling a selection mechanism to control the processing of the 3D video information by selecting the interlaced 3D display format and the interlaced down conversion. Advantageously the user is provided with the best possible 3D view.