Video Watermark URI Message Reception for Enhanced Service Data Integrity
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Solution Overview
Problem
In digital broadcasting systems, the broadcast receiving device extracts audio-visual content from an MVPD and provides only uncompressed audio-visual data to the AV presentation device, while the enhanced service data provided may not be the same as intended by the broadcasting station, leading to inconsistencies in the data received by the AV presentation device.
Innovation Solution
A method involving the reception of a data stream with a watermark message, extraction of dynamic event messages, and determination of delivery protocol types to ensure that the watermark emission formats adhere to specific threshold values, allowing for the extraction of associated field information related to delivery protocols, thereby maintaining the integrity of enhanced service data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the broadcast receiving device extracts audio-visual content from the MVPD signal and provides only uncompressed audio-visual data to the AV presentation device, then the audio-visual quality is improved, but the enhanced service data may be lost or modified
Solution Approach 1:
The enhanced service data is segmented and embedded within individual video frames as watermark information, rather than being transmitted as a separate data stream. This allows the data to be distributed across multiple frames, ensuring that even if some frames are lost or modified, the complete enhanced service data can still be reconstructed at the AV presentation device.
Solution Approach 2:
The enhanced service data is nested within the video content by embedding it as watermark information in the video frames. The watermark contains the enhanced service data in a structured format with field identifiers and length indicators, allowing the AV presentation device to extract the original enhanced service data along with verification information to detect any modifications.
2Adaptability or versatility
If the MVPD converts the extracted content into audio-visual signals with a suitable format for transmission, then the compatibility with the broadcast receiving device is improved, but the enhanced service data provided from the broadcasting station may be removed or replaced
Solution Approach 1:
The watermark structure includes field length indicators and reserved fields that provide feedback information about the data structure. The AV presentation device uses this feedback to verify the integrity of the enhanced service data and detect any modifications made by the MVPD, allowing it to request retransmission or use error correction mechanisms.
Solution Approach 2:
The patent changes the parameter representation of enhanced service data by encoding it in a standardized watermark format with explicit length fields and type identifiers. This allows the data to be transmitted in a format that is compatible with different delivery protocols (1X, 2X, 4X video watermark emission formats) while maintaining the original data integrity through verification mechanisms.
Data Source
AI summary
A system for broadcasting that includes a watermark payload.