Broadcast Receiver Dual-Stream Combining for Incomplete Packet Recovery
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Solution Overview
Problem
Existing broadcast receiver technologies face challenges in accurately identifying and correcting errors in additional data transmitted with broadcast signals, particularly under interference or poor reception conditions, leading to incomplete or lost data packets.
Innovation Solution
A method and device utilizing two receiving units, data extraction units, and decoding units to independently process and check raw data streams for completeness, allowing for the generation of a complete data stream by combining incomplete streams and using checksums and segment indices for error detection and correction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional data are transmitted as multiple separate data packets, then transmission robustness is improved, but data completeness and ordering on the receiver side become more difficult to verify
Solution Approach 1:
The patent segments additional data into multiple separate data packets for transmission, which improves transmission robustness by allowing selective retransmission of only defective packets. Each packet is independently transmitted and can be individually verified and retransmitted without affecting other packets.
Solution Approach 2:
The patent implements a feedback mechanism where the receiver verifies data packet completeness and sends requests for retransmission of defective or lost packets. This feedback loop ensures data integrity while managing the complexity of packet identification and ordering through systematic verification and request protocols.
2Adaptability or versatility
If data packets are transmitted independently, then transmission flexibility is improved, but error identification and correction on the receiver side become more challenging
Solution Approach 1:
The patent applies preliminary actions by transmitting data packets with embedded identification and ordering information that enables the receiver to independently identify and order packets without complex real-time analysis. Checksum verification is prepared in advance for each packet, facilitating easier error detection.
Solution Approach 2:
The patent replaces complex mechanical error detection methods with electronic/digital checksum verification and packet identification systems. This substitution simplifies error detection and correction by using computational methods rather than complex signal processing or timing-based mechanisms.
3Reliability
If multiple receiving units are used to receive broadcast signals, then data stream completeness is improved, but device complexity increases
Solution Approach 1:
The patent merges data streams from multiple receiving units through a combining unit that integrates packets from different sources. This combining process improves data stream completeness by allowing packets received by one unit to complement packets received by another, while managing complexity through systematic merging protocols.
Solution Approach 2:
The patent implements multi-functionality by designing the broadcast receiver to handle multiple receiving units with shared data extraction, decoding, and processing capabilities. This universal approach allows the same processing logic to be applied to data from any receiving unit, reducing overall system complexity despite having multiple receivers.
Data Source
AI summary
The present disclosure relates to a method and system for receiving a broadcast signal. The system includes a broadcast receiver device having two receiving units, two decoding units, a combining unit and a further processing unit. A broadcast signal is received by both receiving units, so that two reception signals are provided. From each reception signal, a raw data stream is extracted and decoded by the decoding units. It is checked if the data stream provided by each decoding unit is complete. If a first data stream is complete, it is processed by the further processing unit. If the first data stream is incomplete and the second data stream is complete, the second data stream is further processed. If both data streams are incomplete, they will be combined to a combined data stream by the combining unit, the combined data stream being further processed, if it is complete.