Broadcast Receiver PLP Signal Processing with Dynamic Decoding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current broadcast receiving apparatuses face challenges in supporting various digital broadcast standards, requiring a solution that can efficiently process and decode multiple physical layer pipes (PLPs) with additional information for robust multimedia data delivery.
Innovation Solution
A broadcast receiving apparatus and signal processing method that includes a receiver, demodulator, and signal processor to demodulate and process generic packets with additional information such as sync code, valid, error, identification, and rank information, allowing for decoding at different levels and accurate timing restoration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple physical layer pipes (PLPs) are processed simultaneously to support various digital broadcast standards, then adaptability is improved, but device complexity increases
Solution Approach 1:
The received data stream is divided into multiple physical layer pipes (PLPs), each carrying independent generic packets with specific additional information. The signal processor segments the processing task by handling each PLP separately, extracting relevant additional information (sync code, valid, error, identification, rank) from each packet independently, which simplifies the overall processing complexity while maintaining support for multiple broadcast standards
Solution Approach 2:
The broadcast receiving apparatus employs a universal processing framework where the signal processor handles multiple PLPs through a common set of operations: demodulation, additional information extraction, and selective decoding. This multi-functional approach allows the same hardware/software architecture to support various digital broadcast standards without requiring separate dedicated processing paths for each standard
2Reliability
If additional information is extracted and processed from each generic packet to ensure accurate timing and error handling, then reliability is improved, but processing time increases
Solution Approach 1:
The demodulator performs preliminary extraction of additional information (sync code, valid, error, identification, rank) from each generic packet before the main decoding process. By preparing this metadata in advance, the signal processor can make immediate decisions about which packets to decode, in what order, and with what priority, thereby reducing the overall processing time while ensuring accurate timing and error handling
Solution Approach 2:
Each generic packet contains self-describing additional information that enables autonomous processing decisions. The sync code allows packets to identify their own timing characteristics, error information indicates which packets require correction, and rank information specifies processing priority. This self-service mechanism allows packets to guide their own processing without requiring extensive external control, reducing processing overhead while maintaining reliability
3Manufacturing precision
If decoding is performed at different levels based on error information, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
The signal processor implements dynamic decoding where the decoding level and method are adjusted in real-time based on the error information extracted from each generic packet. Packets with low error probability undergo simple decoding, while packets with high error probability trigger more robust but computationally intensive decoding procedures. This dynamic adaptation achieves high decoding precision across varying channel conditions without requiring all processing paths to be maximally complex
Data Source
AI summary
A broadcast receiving apparatus and a signal processing method thereof are provided. The broadcast receiving apparatus includes a receiver configured to receive a data stream comprising a plurality of physical layer pipes (PLPs); a demodulator configured to output at least one generic packet corresponding to each of the plurality of PLPs and additional information on the at least one generic packet by demodulating the plurality of PLPs; and a signal processor configured to process the at least one generic packet based on the output additional information.