Receiving Device Recovery Files for Watermark-Based Broadcast Signaling
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Solution Overview
Problem
In digital broadcasting systems, the enhanced service data provided by a broadcasting station may not reach the AV presentation device due to extraction and conversion by the MVPD, leading to a mismatch between the intended and received enhanced service data.
Innovation Solution
A method for receiving a recovery file format file that includes decoding elements from a recovery data table, which contains a contentID field, svcInetUrl field, and URLValue field to access Internet signaling files, ensuring the AV presentation device can retrieve the intended enhanced service data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the MVPD extracts and converts AV content and enhanced service data, then the AV content can be provided in a suitable format for transmission, but the original enhanced service data from the broadcasting station may be removed or replaced
Solution Approach 1:
The broadcasting station embeds watermarks containing enhanced service data identifiers into the AV content before transmission. This preliminary action ensures that the essential service information is embedded within the content itself, allowing the AV presentation device to retrieve the correct enhanced service data independently of the MVPD's conversion processes.
Solution Approach 2:
A watermarking system acts as an intermediary between the broadcasting station and the AV presentation device. The watermark contains references to enhanced service data, enabling the presentation device to access the original service information directly from the broadcasting station's server, bypassing the MVPD's data conversion process.
2Ease of operation
If the broadcast receiving device extracts AV content from the MVPD signal, then uncompressed AV data can be provided to the AV presentation device, but only enhanced service data provided to the broadcast receiving device is available
Solution Approach 1:
The watermark embedded in the AV content serves as an intermediary that carries service data identifiers from the broadcasting station directly to the AV presentation device. This allows the presentation device to request and receive the original enhanced service data from the broadcasting station's server, independent of what data the broadcast receiving device receives from the MVPD.
Solution Approach 2:
The system separates the AV content delivery path from the enhanced service data delivery path. The AV content is delivered through the MVPD to the broadcast receiving device and then to the AV presentation device, while the enhanced service data is delivered separately from the broadcasting station's server to the AV presentation device using identifiers from the watermark.
3Adaptability or versatility
If the same enhanced service data provided by the broadcasting station is not provided to the broadcast receiving device and/or AV presentation device, then the broadcast system can operate with different service configurations, but the intended enhanced service data is lost
Solution Approach 1:
The AV presentation device uses the watermark information to request enhanced service data from the broadcasting station's server, creating a feedback loop that ensures the correct service data is retrieved. The device sends requests based on identifiers from the watermark and receives the corresponding enhanced service data, ensuring reliability regardless of what data is available at the broadcast receiving device.
Data Source
AI summary
A system for retrieving watermark associated recovery data information.