Broadcast Signal Processing Using LCT Packet Segmentation
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Solution Overview
Problem
Current digital broadcast systems face challenges in data transmission efficiency, robustness, and flexibility, particularly in handling large amounts of data and providing real-time multimedia content, which is inadequate for modern broadcasting needs.
Innovation Solution
A method and apparatus for transmitting and receiving broadcast signals that involve generating signaling information, dividing multimedia content into independently encoded or decoded data units, and using packet information to identify and process these units efficiently, allowing for real-time transmission and reception of multimedia content across the same RF signal bandwidth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If digital broadcast systems transmit large amounts of video/audio data and additional services, then service functionality is improved, but data transmission efficiency deteriorates
Solution Approach 1:
The patent segments data into different types (video data, audio data, additional service data) and transmits them through separate data pipes with different priorities and coding schemes. This allows efficient resource allocation for each data type while maintaining overall system functionality.
Solution Approach 2:
The patent changes transmission parameters dynamically based on data type and service requirements. Different coding schemes, error correction levels, and prioritization schemes are applied to different data streams, optimizing transmission efficiency for each while maintaining service versatility.
2Ease of operation
If conventional systems obtain and display multimedia content, then content delivery is achieved, but time consumption is excessive
Solution Approach 1:
The patent performs preliminary actions by pre-processing and pre-organizing multimedia content into standardized data structures before transmission. This includes pre-segmenting content, pre-applying error correction codes, and pre-organizing data packets, which significantly reduces processing time at the receiving end.
3Adaptability or versatility
If broadcast systems provide HD images and multi-channel audio, then service quality is improved, but network robustness deteriorates
Solution Approach 1:
The patent applies different error correction strengths and transmission reliability measures to different data pipes based on their specific requirements. Critical data like audio synchronization signals receive stronger error correction, while less critical data uses lighter protection, optimizing overall network robustness while maintaining high service quality.
Data Source
AI summary
A device with one or more processors for processing broadcast signals, the device including a depacketizing processor for extracting one or more delivery objects from one or more Layered Coding Transport (LCT) packets of the broadcast signals based on signaling information including mapping information, wherein the one or more LCT packet are used to transport the one or more delivery objects including service data for one or more broadcast services of the broadcast signals, wherein the one or more delivery object are carried in one or more transport sessions, wherein each LCT packet includes a header having a Transport Object Identifier (TOI) identifying a delivery object being carried in the each LCT packet, wherein the mapping information is used to establish a one-to-one mapping between the TOI and a uniform resource locator (URL) for the delivery object, wherein the one or more LCT packets and the signaling information are transmitted separately, wherein the header of each LCT packet further includes type information indicating whether a type of the delivery object being carried in the each LCT packet is a media segment type or an initialization segment type and a decoding processor for decoding the service data for the broadcast service.