Transport Protocol Control Information for Codec Flexibility
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Solution Overview
Problem
Current communication systems require changing both the encoder and decoder when control information type changes, which is complex and expensive, especially when these components are hardware-based, limiting flexibility and increasing costs.
Innovation Solution
A communication device with a transport protocol unit that generates and processes messages with control information, allowing for selective control of data processing in receiving devices without modifying the codec, by adding control information at the transport protocol layer rather than the codec application layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If control information type is changed by modifying the codec, then the processing control capability is improved, but the device complexity and cost increase significantly
Solution Approach 1:
The patent segments the control information from the codec structure by placing it in the transport protocol layer (RTP/RTCP packets) rather than embedding it within the codec application layer. This separation allows the codec to remain unchanged while still enabling flexible control information transmission, directly resolving the contradiction between adaptability and device complexity.
Solution Approach 2:
The transport protocol layer acts as an intermediary between the codec and the control mechanism. By inserting control information into RTP/RTCP packets at the transport layer, the system enables dynamic control without requiring modifications to the codec components, thus maintaining simplicity while achieving versatility.
2Adaptability or versatility
If hardware codecs are exchanged to change control information handling, then the processing capability is improved, but the cost and complexity increase
Solution Approach 1:
Instead of replacing physical hardware codecs, the patent uses software-based transport protocol processing to achieve control information handling. The control information is copied into the data stream at the transport layer, allowing flexible control without any hardware changes, thus dramatically reducing manufacturing and replacement costs.
Solution Approach 2:
The patent replaces the mechanical approach of physically exchanging hardware codecs with a software-based solution at the transport protocol layer. By using RTP/RTCP packet processing instead of hardware modification, the system achieves the same functional result with significantly lower cost and complexity.
3Ease of operation
If control information is added at the codec application layer, then the processing control is improved, but the system complexity and update difficulty increase
Solution Approach 1:
The patent moves the control information from the traditional codec application layer dimension to the transport protocol layer dimension. This dimensional shift allows control information to be added without increasing codec structure complexity, as the transport layer provides a separate namespace and processing mechanism independent of the codec internals.
Data Source
AI summary
A communication device including a source coding unit source-coding data to be transmitted, a transport protocol unit, coupled to the source coding unit, generating at least one transport protocol message from the source-coded data, wherein the transport protocol unit can add to the source-coded data in the transport protocol message control information by means of which processing of the data to be transmitted can be controlled in a communication device receiving the transport protocol message.