LCT Header Filtering for IP Digital Broadcasting
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Solution Overview
Problem
Digital broadcasting using IP transmission systems lacks an effective packet filtering process, as existing technologies have not established a reliable method for acquiring necessary information from the various data packets transmitted.
Innovation Solution
A receiving and transmitting device system that performs an effective filtering process using filtering information arranged in the headers of packets, specifically in the Layered Coding Transport (LCT) headers, which includes compression, type, extended filter, and version information, to filter signaling data in digital broadcasting IP transmission systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If packet filtering is performed in digital broadcasting using IP transmission system, then necessary information can be acquired efficiently, but no established technology system exists for such filtering process
Solution Approach 1:
The patent applies preliminary action by pre-defining filtering information in the LCT header before packet transmission. The filtering information includes TOI (Transport Object Identifier) and other parameters that enable the receiving device to perform efficient filtering without requiring complex post-reception analysis, thus resolving the contradiction between efficiency and reliability.
Solution Approach 2:
The patent introduces filtering information as an intermediary element in the LCT header that mediates between the transmitted packets and the receiving device's filtering capability. This intermediary structure allows reliable filtering by providing explicit filtering criteria without requiring complex processing, thus achieving both efficiency and reliability.
2Productivity
If filtering information is arranged in LCT header, then packet filtering becomes effective, but device complexity increases due to additional header processing
Solution Approach 1:
The patent applies segmentation by dividing the filtering information into specific fields within the LCT header structure (TOI, TSI, etc.). This segmentation allows the receiving device to process only relevant header fields for filtering purposes, reducing overall processing complexity while maintaining filtering effectiveness.
Solution Approach 2:
The patent applies local quality by placing specific filtering-relevant information (TOI, compression information, type information) in targeted locations within the LCT header. This allows the receiving device to focus processing on specific header regions rather than analyzing the entire header, thus reducing complexity while maintaining filtering effectiveness.
3Adaptability or versatility
If multiple types of filtering information are included, then filtering capability is enhanced, but data transmission overhead increases
Solution Approach 1:
The patent applies universality by designing the LCT header filtering information structure to serve multiple filtering purposes simultaneously. The same TOI field can be used for object identification, compression status for data format filtering, and type information for content categorization. This multi-functionality enhances filtering capability without proportionally increasing overhead.
Solution Approach 2:
The patent applies partial action by including only the essential filtering information fields needed for effective packet filtering (TOI, compression information, type information, extended filter information). By including just the necessary fields rather than comprehensive filtering data, the patent achieves adequate filtering capability with controlled overhead.
Data Source
AI summary
A receiving device including a receiver and circuitry is provided. The receiver is configured to receive a digital broadcast signal transmitted using an Internet Protocol (IP) transmission method. The digital broadcast signal includes Layered Coding Transport (LCT) packets. The circuitry is configured to extract one of the LCT packets based on filtering information arranged in a header of the one of the LCT packets transmitted in a first layer that is higher than an IP layer of a protocol of the IP transmission method in the digital broadcast signal, and process first signaling data contained in the one of the LCT packets. The LCT packets are transmitted using a session of the first layer. The filtering information includes compression information indicating compression/no-compression of the first signaling data, and type information indicating a type of the first signaling data.