IP Broadcast Transmission via SDPT in Service Signaling Channel

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Solution Overview

Problem

Current digital television broadcasting standards face challenges in efficiently transmitting and receiving broadcast content using an Internet Protocol (IP) system as a transport layer, particularly in integrating broadcasting and communication, and providing unified program information across various devices with different screen sizes and processing capabilities.

Innovation Solution

A transmission device and method that employs an IP system with a Service Description Protocol (SDP) table in a Service Signaling Channel (SSC) within a transport stream, including IP addresses, port numbers, and attribute information, and uses an Electronic Service Guide (ESG) for unified program information display, allowing for high-speed channel selection and reducing processing burdens.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If an IP system is employed as a transport layer to integrate broadcasting and communication, then transmission efficiency and system integration are improved, but compatibility with conventional broadcasting architectures and processing complexity increase

Engineering Contradiction:

Improveintegration of broadcasting and communicationVSAvoidprocessing complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent introduces an intermediary structure by placing the SDPT table in the SSC within the transport stream, acting as a mediator between the IP system and conventional broadcasting receivers. This intermediary layer provides necessary adaptation information without requiring complete system replacement, thus reducing processing complexity while enabling integration.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent segments the transport stream into distinct components: the SDPT table for service description, the SSC for signaling, and the MPEG transport stream for content. This segmentation allows receivers to process only the necessary adaptation information separately from the main content stream, reducing overall processing complexity while maintaining IP system integration benefits.

Inventive Principle:

Principle #1Segmentation

2Loss of time

If service description information is included in the transport stream to enable channel selection, then channel selection speed is improved, but the size of the transport stream and processing burden increase

Engineering Contradiction:

Improvechannel selection timeVSAvoidtransport stream size

Core Design Contradiction:

Loss of timeVSQuantity of substance

Solution Approach 1:

The patent extracts the essential service description information into a separate SDPT table that is referenced from the SSC. This extraction allows receivers to obtain channel selection information efficiently without processing the entire transport stream, thus reducing channel selection time without significantly increasing the overall stream size.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The SDPT table is prepared in advance and placed in the SSC before actual channel selection is needed. This preliminary action allows receivers to have service description information readily available when channel selection is required, eliminating the need to search through the entire transport stream in real-time and reducing both selection time and processing burden.

Inventive Principle:

Principle #10Preliminary action

3Adaptability or versatility

If an SDPT table is arranged in the SSC to provide service description, then adaptability for unified program information display is improved, but maintenance complexity and system compatibility challenges increase

Engineering Contradiction:

Improveunified program information displayVSAvoidmaintenance burden

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The patent designs the SDPT table in the SSC to serve multiple functions: it provides service description for channel selection, enables unified program information display across different devices, and maintains compatibility with conventional architectures. This multi-functionality is achieved through a standardized structure that can be interpreted by both IP-based and traditional broadcasting systems, reducing maintenance complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent employs parameter changes by using a standardized SDPT table format that can adapt to different device capabilities and broadcasting systems. The table structure allows for flexible parameter interpretation without requiring system-specific customizations, thus improving adaptability while simplifying maintenance through standardization.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS11336933B2Transmission device, transmission method, reception device, reception method, and computer program

Publication Date: 2022.05.17 SATURN LICENSING LLC

AI summary

Reception processing of broadcast content, in transmission of which an IP system is employed, is performed. An SDPT, in a header extension part of which service identification information and an SDP are arranged, in an SSC is transmitted from a broadcasting station. On a reception side, it becomes possible to acquire an intended SDPT from signaling information SSC easily at high speed by performing section filtering processing with respect to a received transport stream. Then, it is possible to access a stream of an intended channel at high speed based on an IP address and a port number described in an SDP stored in a header extension part of the acquired SDPT.