Link Layer Packet Generator for Hybrid Broadcast Signal Processing
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Solution Overview
Problem
Current hybrid broadcast systems face challenges in efficiently processing data transmitted through both existing broadcast networks and broadband networks, lacking a standardized method for emergency alert message transmission and viewer-friendly service search functionalities, and require an efficient signaling method for link layer operations.
Innovation Solution
A broadcast system that includes an IP packet generator for service acquisition information, a link layer packet generator for encapsulating and compressing data, and a processor for reproducing broadcast content, enabling efficient data processing and transmission across hybrid networks, independent of upper layer changes, with signaling information for fast service acquisition and error correction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If data transmission schemes via broadcast network and broadband network coexist in hybrid broadcast system, then service diversity and adaptability are improved, but data processing complexity and device complexity increase
Solution Approach 1:
The patent segments data processing by creating separate IP packet generators for broadcast data and service acquisition information, and separate link layer packet generators for different data types. This segmentation allows independent processing of broadcast and broadband data streams, reducing overall processing complexity while maintaining service diversity.
Solution Approach 2:
The patent introduces link layer signaling data as an intermediary that coordinates between broadcast and broadband networks. The signaling data includes initialization parameters and configuration information that mediate the interaction between different network protocols, simplifying the integration complexity.
2Productivity
If service acquisition information is transmitted separately from broadcast data, then service search efficiency and speed are improved, but transmission overhead and device complexity increase
Solution Approach 1:
The patent merges service acquisition information transmission into the existing broadcast signal framework by using link layer signaling data that is transmitted alongside broadcast data. This combining approach allows fast service acquisition without requiring completely separate transmission channels, thus avoiding excessive overhead.
Solution Approach 2:
The patent implements preliminary action by including service acquisition information and initialization parameters in the link layer signaling data that is transmitted before or concurrently with the main broadcast service data. This allows receivers to prepare and configure themselves in advance for faster service acquisition.
3Reliability
If link layer signaling data is transmitted separately, then initialization efficiency and error correction are improved, but bandwidth consumption and transmission overhead increase
Solution Approach 1:
The patent makes the link layer signaling data multi-functional by using it to carry both initialization parameters and error correction information simultaneously. This universal signaling mechanism performs multiple functions within a single data structure, reducing the need for separate dedicated channels for each function and thus conserving bandwidth.
4Adaptability or versatility
If IP-based broadcast system is expanded, then emergency alert message transmission capability is improved, but system complexity and difficulty of detecting and measuring increase
Solution Approach 1:
The patent extracts emergency alert message transmission as a specific function that can be implemented through the existing link layer signaling mechanism. By taking out and specializing the signaling data structure to handle emergency alerts, the system gains this capability without requiring complete system redesign, thus managing complexity.
Data Source
AI summary
A digital broadcast receiver for processing a broadcast signal, includes a tuner configured to receive the broadcast signal including Physical Layer Pipes (PLPs), wherein the PLPs carry link layer packets; and a controller coupled to the tuner, wherein the controller is configured to decode a specific PLP, acquire signaling information for header compression, wherein the signaling information for header compression includes a PLP identifier for the signaling information for header compression, profile information for representing a range of multiple protocols used to compress at least one stream, and a maximum value of a context identifier, decode another PLP to receive the at least one compressed stream based on the signaling information for header compression, and decompress the at least one compressed stream.