Uncoded Transport Tunneling for Forward-Compatible TV Broadcasts

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Solution Overview

Problem

Current ATSC digital television broadcast systems face challenges in mobile reception, especially at vehicular speeds, and lack a method to seamlessly integrate extensions into the existing framework for improved mobile reception of digital television signals.

Innovation Solution

The system employs a method of encoding audiovisual information using a first error correction coding method for primary content and a second method for secondary content, with control information indicating the encoding status, allowing for 'uncoded transport tunneling' to accommodate future service versions within the existing framework, enabling both legacy and new devices to receive and present audiovisual information.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a single error correction coding method is used for all audiovisual information, then the existing transport framework remains simple and compatible, but the system cannot accommodate future service versions with different coding requirements

Engineering Contradiction:

Improveforward compatibilityVSAvoidtransport framework complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent segments the transport stream into different packet types: coded packets containing audiovisual information encoded with the first error correction coding method, and uncoded packets containing information encoded with a second error correction coding method. This segmentation allows the system to support multiple coding methods simultaneously while maintaining compatibility with existing single-method receivers.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces an intermediary mechanism - the uncoded transport tunnel - that carries information encoded with a second error correction coding method through the existing transport framework designed for the first method. This intermediary approach enables future service versions to coexist with legacy services without requiring immediate system-wide changes.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

If the transport framework is extended to support multiple error correction coding methods, then future service versions can be accommodated, but legacy devices cannot receive and process the extended framework

Engineering Contradiction:

Improveservice version integrationVSAvoidlegacy device compatibility

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The transport framework is designed with multi-functionality to handle both coded and uncoded packets. Legacy devices can process only the coded packets using their existing error correction decoding capabilities, while newer devices can utilize both coded and uncoded packets. This universal design ensures backward compatibility while enabling forward expansion.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The system implements partial action by allowing legacy devices to receive and process only the portion of the transport stream containing coded packets, while newer devices can access the full stream including uncoded packets. This partial participation approach ensures that legacy devices remain functional without requiring them to implement the extended uncoded packet handling capabilities.

Inventive Principle:

Principle #16Partial or excessive action

3Reliability

If all audiovisual information is encoded using the first error correction coding method, then legacy devices can receive and present the information, but new service versions with different coding methods cannot be transmitted

Engineering Contradiction:

Improvelegacy device receptionVSAvoidnew service version support

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent implements a nested structure where uncoded packets containing future service version information are embedded within the existing transport stream framework designed for coded packets. The uncoded transport tunnel is nested within the overall transport framework, allowing new coding methods to be contained within the legacy structure without disrupting existing operations.

Inventive Principle:

Principle #7Nested doll (Nesting)

Data Source

PatentUS9960787B2Wireless transport framework with uncoded transport tunneling

Publication Date: 2018.05.01 HYPERX HOLDINGS LLC

AI summary

Wireless transport of multiple service versions of a transport framework. First and second information may be processed for transmission, respectively, according to first and second service versions of a transport framework. The first and second information may be encoded using a first type of error correction coding; after processing, the processed first information may include error correction coding according to the first type of error correction coding, while the processed second information may remain uncoded according to the first type of error correction coding. Control information may be generated indicating that the second information remains uncoded according to the first type of error correction coding, which may signal to receivers that the second information is processed according to the second service version of the transport framework. Packets including the processed first information, the processed second information, and the control information may be generated and transmitted in a wireless manner.