Reproducing Device Caption Display Compliance CFR 47
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Solution Overview
Problem
Existing reproducing devices do not fully comply with CFR 47 Part 79 regulations, specifically lacking functionality to display captions in roll-up and edge selection modes as required for IP-distributed content.
Innovation Solution
A reproducing device is designed to receive and process IP-distributed content data, incorporating user-selectable display modes and edge options for captions by extending the SMPTE-TT format to include attributes for presentation, presentation rate, and text edge, allowing for customizable caption display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the reproducing device uses the current SMPTE-TT format for caption display, then the device structure remains simple, but the device cannot comply with CFR 47 Part 79 regulations requiring roll-up mode and edge selection functions
Solution Approach 1:
The patent extends the SMPTE-TT format by adding new parameters and attributes (such as presentation mode, edge style, and display timing) to the existing caption data structure. This allows the reproducing device to comply with CFR 47 Part 79 regulations while maintaining backward compatibility with the basic SMPTE-TT format, thus resolving the contradiction between regulatory compliance and device complexity.
2Adaptability or versatility
If the reproducing device implements all CFR 47 Part 79 caption display functions, then the device provides comprehensive user customization options, but the processing complexity and data handling requirements increase
Solution Approach 1:
The patent segments the caption display processing into distinct functional modules: caption data reception, parameter parsing, display timing calculation, and visual rendering. Each module handles specific aspects of the complex requirements, making the overall system more manageable. The segmentation allows the device to implement comprehensive customization functions while reducing processing complexity through modular design.
Solution Approach 2:
The patent performs preliminary processing of the extended SMPTE-TT data to extract and validate required parameters before actual display occurs. By pre-processing the caption data structure and verifying compliance with CFR 47 Part 79 requirements in advance, the system reduces real-time processing complexity and ensures smooth operation of all display customization functions.
3Ease of operation
If the reproducing device adds user setting retention functionality, then the device maintains user preferences between sessions, but the storage requirements and data management complexity increase
Solution Approach 1:
The patent implements user setting retention by creating a simplified data structure that copies and stores only the essential display parameters (such as selected presentation mode, edge style, and color preferences) in non-volatile memory. This selective copying approach maintains user preferences between sessions while minimizing storage requirements and data management complexity by excluding unnecessary metadata and configuration information.
Data Source
AI summary
A transmitting apparatus including circuitry configured to generate caption data corresponding to content data and having elements defined in Extensible Markup Language (XML), and output the content data and the generated caption data to a reproducing device.