Watermark URI Payload for Broadcast Service Data Integrity
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Solution Overview
Problem
In digital broadcasting systems, the enhanced service data provided by broadcasting stations is often altered or removed by MVPDs, leading to inconsistencies in the data received by AV presentation devices, which can result in a loss of original service data and increased latency due to the need for multiple server requests.
Innovation Solution
A method and device for processing data streams that include watermarks, which selectively determine the type of uniform resource identifier to access specific servers for enhanced service data, such as signaling, electronic service guide data, service usage reporting, and dynamic events, ensuring accurate and efficient retrieval of original service data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If MVPD extracts and converts audio-visual content, then the content is provided in suitable format for transmission, but the enhanced service data is removed or replaced
Solution Approach 1:
The patent embeds enhanced service data URIs within the audio-visual content itself through watermarking, separating the data delivery mechanism from the traditional enhanced service data stream. This allows the content to be segmented into visual/audio portions and embedded data portions, enabling recovery of service data through watermark extraction even when traditional data streams are removed or replaced by MVPD
Solution Approach 2:
The patent embeds enhanced service data URIs nested within the audio-visual content frames through watermarking techniques. The service data is hidden inside the content structure, allowing it to travel through the MVPD conversion process intact while being recoverable at the receiving end
2Ease of operation
If broadcast receiving device extracts content from MVPD signal, then uncompressed audio-visual data is provided to AV presentation device, but only enhanced service data provided to broadcast receiving device is available
Solution Approach 1:
The patent performs preliminary embedding of enhanced service data URIs into the audio-visual content frames before transmission through the MVPD and broadcast receiving device. This preliminary action ensures the service data is already embedded in the content that will be extracted and delivered, making it available to the AV presentation device without requiring separate data stream delivery
3Adaptability or versatility
If enhanced service data is removed or replaced by MVPD, then different service data is provided to broadcast receiving device, but data integrity is compromised
Solution Approach 1:
The patent creates a copy of the enhanced service data URIs and embeds them within the audio-visual content through watermarking. This copying mechanism ensures that even if the original enhanced service data stream is removed or replaced by MVPD, a faithful copy travels with the content and can be recovered at the receiving end, maintaining data integrity
Solution Approach 2:
The embedded URI watermark acts as an intermediary that carries enhanced service data through the MVPD conversion process. Rather than relying on the traditional enhanced service data stream that may be removed or replaced, the watermark serves as a mediator that preserves the original service data pathway through content embedding
4Loss of information
If multiple server requests are needed to retrieve enhanced service data, then data can be obtained, but latency increases
Solution Approach 1:
The patent performs preliminary embedding of complete enhanced service data URIs within the audio-visual content frames before transmission. This preliminary action ensures that all necessary service data is already packaged with the content, eliminating the need for multiple sequential server requests and reducing retrieval latency to a single extraction operation
Data Source
AI summary
A system for broadcasting that includes a watermark payload.