Object-Based Audio Transmission via HDMI E-EDID Capability Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current high-speed wired interfaces, such as HDMI, lack the ability to transmit and control object-based audio signals, limiting the customization of audio characteristics for each sound source.
Innovation Solution
The method involves determining if a sink device supports object-based audio processing, transmitting related information through enhanced extended display identification data, and enabling or disabling the object-based audio processing function using a status and control data channel structure, allowing for the packetization and transmission of object-based audio signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If channel-based audio transmission is used in related art high speed interface, then device compatibility and ease of operation are maintained, but the ability to control characteristics of audio signals for each sound source is lost
Solution Approach 1:
The audio signal is segmented into discrete audio objects, each representing a specific sound source. This allows individual control of each audio object's characteristics (position, movement, audio parameters) independently, enabling flexible spatial audio control while maintaining structured data organization for compatibility.
Solution Approach 2:
The transmission protocol adds a new dimensional layer by incorporating object-based audio data alongside traditional channel-based audio data. This dual-layer approach enables object-based control capabilities while preserving backward compatibility with existing channel-based systems through parallel transmission paths.
2Adaptability or versatility
If object-based audio transmission is implemented, then audio signal control for each sound source is enabled, but transmission method and control mechanisms are not defined in related art interfaces
Solution Approach 1:
The patent defines a universal transmission method that can operate within existing high speed interface frameworks while adding object-based audio capability. The protocol structure allows the same interface to handle both traditional channel-based audio and new object-based audio, providing multi-functionality without requiring separate dedicated infrastructure.
Solution Approach 2:
The system performs preliminary actions by establishing object-based audio transmission capability before actual audio data transmission begins. This includes pre-defining transmission parameters, control mechanisms, and data formats in the protocol specification, enabling standardized implementation while maintaining flexibility for various audio scenarios.
3Reliability
If enhanced extended display identification data is used to transmit OBA support information, then device compatibility is improved, but data transmission channel complexity increases
Solution Approach 1:
The patent merges object-based audio support information with existing enhanced extended display identification data structures. By combining OBA capability indicators with traditional display identification data, the system achieves device compatibility through a unified data structure while avoiding the need for separate dedicated channels, thus reducing overall system complexity.
Data Source
AI summary
A method for processing data by a source device which transmits an object-based audio (OBA) using a high definition media interface (HDMI), includes when a sink device is connected, requesting the sink device to read an enhanced extended display identification data (E-EDID), receiving an E-EDID including OBA-processing information of the sink device from the sink device, the OBA processing information including at least one of capability information indicating capability of processing the OBA and property information required for processing the OBA, and determining whether the sink device is capable of processing the OBA based on the OBA processing information.