Transmission Controller Auxiliary Information Extraction
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Solution Overview
Problem
Conventional methods for transmitting recorded content from a content recording device to a playback device are inefficient due to the large processing load required to analyze and generate auxiliary information, leading to prolonged time before playback is ready.
Innovation Solution
A transmission control device that generates auxiliary information based on a content stream and transmits it separately from the content stream, allowing the playback device to receive and play back the content without additional analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the content playback device analyzes the entire received content stream to generate auxiliary information, then the auxiliary information is complete and accurate, but the processing load increases and playback readiness time is prolonged
Solution Approach 1:
The patent extracts auxiliary information from the content stream and transmits it separately from the main content stream. This allows the playback device to acquire auxiliary information without analyzing the entire content stream, significantly reducing processing load and playback readiness time while maintaining complete and accurate auxiliary information.
Solution Approach 2:
The content recording device performs the auxiliary information extraction and transmission before the playback device receives the content stream. This preliminary action ensures that auxiliary information is already prepared and available when playback begins, eliminating the need for real-time analysis during playback setup.
2Measurement precision
If the content recording device attaches CCI to packet headers for dynamic copy control, then copy control accuracy is improved, but the playback device must continuously monitor headers increasing processing load
Solution Approach 1:
The patent extracts copy control information and transmits it separately from the content stream in dedicated auxiliary information packets. This allows the playback device to acquire CCI without continuously monitoring content stream packet headers, reducing processing complexity while maintaining accurate copy control through separate, dedicated information channels.
Data Source
AI summary
A transmission control device generates, based on a content stream acquired from an external source, auxiliary information necessary for at least one of recording and playback of a content in the content stream and transmits a transmission target stream to an external device. The transmission target stream includes a first stream portion based on the content stream and a second stream portion based on the generated auxiliary information.