Audio Transmission Device Bandwidth Efficiency

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Solution Overview

Problem

Existing 3D audio transmission technologies face compatibility issues and inefficient bandwidth usage due to the incompatibility between MPEG-H 3D Audio and MPEG4 AAC encoding methods, which can lead to suboptimal service delivery when different encoding methods are used.

Innovation Solution

A transmission system that generates multiple audio streams, including channel encoded data and object encoded data, where the object encoded data is embedded in a user data area and identified within a container format, allowing compatible receivers to extract and process only necessary data while discarding incompatible data, thus maintaining compatibility and efficient bandwidth use.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If simulcast is used to maintain compatibility with related audio receivers, then compatibility is improved, but transmission band efficiency deteriorates

Engineering Contradiction:

ImprovecompatibilityVSAvoidtransmission band efficiency

Core Design Contradiction:

Adaptability or versatilityVSLoss of energy

Solution Approach 1:

The audio stream is segmented into multiple independent encoded streams (first encoded data and second encoded data) within a single container. Each stream can be independently decoded by receivers based on their capabilities, eliminating the need for separate simulcast transmissions and improving bandwidth efficiency while maintaining compatibility.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

A single container structure is designed to serve multiple receiver types universally. The container can accommodate both legacy receivers (which decode only the first encoded data) and advanced receivers (which decode both first and second encoded data), making the transmission system multi-functional without requiring separate transmission channels.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Loss of energy

If multiple encoded data streams are transmitted in a single container, then transmission band efficiency is improved, but receiver complexity increases

Engineering Contradiction:

Improvetransmission band efficiencyVSAvoidreceiver complexity

Core Design Contradiction:

Loss of energyVSDevice complexity

Solution Approach 1:

The patent extracts and separates different encoded data types into distinct streams within the container, each with clear identification markers. Receivers can extract only the streams they are capable of decoding, simplifying their processing requirements while still benefiting from the efficient multi-stream transmission structure.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The container structure is pre-configured with identification information and metadata that allows receivers to quickly identify and select appropriate encoded data streams before decoding. This preliminary organization reduces the complexity of stream selection and processing during actual playback.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS10142757B2Transmission device, transmission method, reception device, and reception method

Publication Date: 2018.11.27 SONY GROUP CORP

AI summary

A new service can be provided as maintaining the compatibility with a related audio receiver, without deteriorating an efficient usage of a transmission band. A predetermined number of audio streams having first encoded data and second encoded data which is related to the first encoded data are generated, and a container in a predetermined format including these audio streams is transmitted. The predetermined number of audio streams are generated so that the second encoded data is discarded in a receiver which is not compatible with the second encoded data.