Baseband Packet Headers for Mixed Broadcast Stream Transmission
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Solution Overview
Problem
Current broadcast communication systems face challenges in providing high-quality digital broadcasting services due to the increasing user demand for various receiving methods, requiring improved methods for transmitting and processing digital broadcast signals efficiently.
Innovation Solution
A transmitting apparatus and method that generates frames with baseband packets including headers and payload data, allowing for signal processing and transmission, and a receiving apparatus that extracts and processes header information to efficiently map and transmit data streams, including transport streams and internet packets, across multiple signal processing paths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple types of data streams (TS, IP, signaling packets) are transmitted through a single broadcast communication system, then the versatility and quality of digital broadcast services are improved, but the complexity of signal processing and frame structure increases
Solution Approach 1:
The patent segments different data streams (TS packets, IP packets, signaling packets) into separate packet types with distinct header structures. Each packet type is processed independently through dedicated signal processing paths, allowing the system to handle multiple data types without requiring complex integrated processing for all streams simultaneously.
Solution Approach 2:
The patent creates a universal frame structure that can accommodate multiple types of packets (TS, IP, signaling) through a standardized header format. The baseband packet generator and signal processor are designed to handle various packet types using the same fundamental processing architecture, reducing overall system complexity while maintaining versatility.
2Measurement precision
If detailed header information (packet type, null packet removal status, clock reference) is included for each baseband packet, then the precision of signal processing and data recovery is improved, but the overhead and processing burden increase
Solution Approach 1:
The patent applies local quality by providing detailed header information only where necessary. The header includes packet type identification and specific control information (null packet removal status, clock reference) only for packets that require such detailed processing, rather than uniformly adding overhead to all packets. This allows precise processing of complex packets while keeping simple packets lightweight.
Solution Approach 2:
The patent performs preliminary encoding of control information into the header structure before transmission. The baseband packet generator pre-embeds necessary control data (packet type, null packet status, clock reference) in the header, so that the receiving apparatus can perform accurate signal processing without requiring additional communication overhead during reception and decoding.
3Productivity
If null packets are removed before baseband packet generation to improve transmission efficiency, then the productivity of data transmission is improved, but the difficulty of tracking and synchronizing data streams increases
Solution Approach 1:
The patent performs preliminary action by removing null packets before baseband packet generation and encoding information about the removed null packets into the header (NPDI field and DNP counter). This allows the receiving apparatus to efficiently transmit data without null packet overhead while maintaining the ability to track and synchronize data streams through the embedded control information in the header.
Solution Approach 2:
The patent implements feedback by including information about null packet removal status and count in the transmitted header. The receiving apparatus uses this feedback information to accurately reconstruct the original data stream structure, maintaining synchronization despite the removal of null packets during transmission.
Data Source
AI summary
A transmitting apparatus, a receiving apparatus and methods of controlling these apparatuses are provided. The transmitting apparatus includes: a baseband packet generator configured to, based on an input stream including a first type stream and a second type stream, generate a baseband packet including a header and payload data corresponding to the first type stream; a frame generator configured to generate a frame including the baseband packet; a signal processor configured to perform signal-processing on the generated frame; and a transmitter configured to transmit the signal-processed frame, wherein the header includes a type of the payload data in the baseband packet and the number of the first type stream packets in the baseband packet.