Multimedia Packet Reception Prioritizing Access Information
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Solution Overview
Problem
In multimedia systems using MMT technology, there is a need for efficient and timely reception of media packets to ensure seamless reproduction of multimedia data, particularly requiring quick detection and reception of essential metadata and signaling information to avoid delays.
Innovation Solution
A method and apparatus that prioritize the reception of media packets containing access information, using a transceiver and controller to identify and buffer packets with RAP information for rapid access to critical data like MPU metadata and signaling information, allowing for efficient decoding and reproduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If media packets are received in transmission order without prioritization, then the reception process is simple, but reproduction delays occur due to late arrival of critical metadata and signaling information
Solution Approach 1:
The receiving entity performs preliminary identification of packet types by examining packet headers before full processing. By detecting RAP indicators and metadata markers in advance, the system prepares to prioritize critical packets (containing MPU metadata, signaling information) before they are fully received, enabling faster processing without complex post-reception analysis
Solution Approach 2:
Different packet processing strategies are applied to different packet types based on their content characteristics. Critical packets (with RAP indicators or metadata) receive prioritized handling including immediate buffering and early processing, while regular media packets follow standard processing flows. This localized quality differentiation resolves the contradiction by applying complexity only where necessary
2Loss of time
If all media packets are processed uniformly, then the processing logic is simple, but critical information such as MPU metadata and signaling information cannot be decoded quickly
Solution Approach 1:
The system uses visual markers (indicators) within packet structures to identify critical packets. RAP indicators, metadata type fields, and signaling information markers act as 'color codes' that allow the receiving entity to quickly distinguish packet types through simple header examination, enabling differentiated processing without complex analysis of packet contents
Solution Approach 2:
The packet processing system is segmented into multiple processing paths based on packet type identification. Critical packets (metadata, signaling information) are routed to dedicated processing streams that prioritize decoding and buffering, while regular packets follow standard processing. This segmentation allows parallel processing of different packet types with appropriate priorities
3Reliability
If the receiving entity buffers all received packets before reproduction, then data completeness is ensured, but channel switching and rapid access to critical data are delayed
Solution Approach 1:
The system extracts critical information (RAP indicators, metadata markers, signaling information) from packet headers before complete packet reception. By identifying and separating critical packets early in the reception process, the system can buffer only these essential packets for rapid access while maintaining selective buffering for other packets, enabling fast channel switching without compromising overall data completeness
Solution Approach 2:
The receiving entity performs preliminary identification and selective buffering of critical packets (those containing RAP information or metadata) as they arrive. This preliminary action ensures that essential data is ready for immediate reproduction or channel switching before the complete media stream is received, maintaining reliability for critical data while enabling rapid channel switching
Data Source
AI summary
The present invention relates to a method and a device for efficiently receiving particular media packets in a multimedia system. The method for receiving media packets in a multimedia system, in which media data are packetized into multiple media packets and then transmitted, according to one embodiment of the present invention comprises the steps of: determining if received media packets comprise access information for receiving particular media data and/or particular information; and if the received media packets comprise the access information, using the access information so as to preferentially receive the particular media data and/or the particular information.