Multi-Tuner Receiver for ATSC 3.0 Signal Optimization
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Solution Overview
Problem
In the context of Advanced Television Systems Committee (ATSC) 3.0, digital TV receivers face challenges in optimizing signal reception in boundary regions where multiple broadcast signals overlap, requiring a method to automatically select the strongest and most error-free signal based on location, motion parameters, and transmitter locations.
Innovation Solution
A method utilizing a multi-tuner chip with machine learning models to identify the best tuner configuration for receiving the strongest signal, switching between tuners to maintain optimal reception, and using antenna configurations to maximize signal quality, even in motion, by considering location and motion parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single tuner is used to receive broadcast signals, then the device complexity is reduced, but the reliability of signal reception deteriorates in boundary regions with overlapping signals
Solution Approach 1:
The receiver is divided into multiple independent tuner units (first tuner, second tuner, third tuner) that can operate simultaneously or be switched between. Each tuner can independently scan and receive signals from different transmitters, allowing the system to segment the reception task across multiple components to maintain reliability in complex signal environments.
Solution Approach 2:
The multiple tuners are designed with identical functionality to scan, receive, and decode broadcast signals. Each tuner can serve as a primary receiver or a backup, and can be dynamically assigned to different transmitters based on signal quality. This multi-functionality allows any tuner to take over if another fails or if a better signal becomes available.
2Adaptability or versatility
If multiple tuners are configured to scan for duplicate services, then the adaptability to signal environments is improved, but the device complexity increases
Solution Approach 1:
The system implements dynamic tuner assignment where the first tuner, second tuner, and third tuner can be dynamically switched between primary reception and duplicate service scanning based on real-time signal conditions. The receiver controller continuously monitors signal quality and adaptively reconfigures which tuners perform which functions, allowing the system to adapt to changing signal environments without manual intervention.
Solution Approach 2:
The system changes operational parameters by switching tuners between different modes (primary reception mode vs. scanning mode) and adjusting their assignment based on signal strength, error rates, and transmitter locations. This parameter-based control allows flexible adaptation to different signal environments while managing the complexity of having multiple tuners through systematic reconfiguration.
3Productivity
If tuners are switched based on location and motion parameters, then the productivity of signal optimization is improved, but the loss of time for switching and scanning increases
Solution Approach 1:
The system performs preliminary scanning and signal quality assessment using the second and third tuners while the first tuner maintains primary reception. By proactively scanning for duplicate services and evaluating signal conditions in advance, the system prepares backup reception paths before they are needed, reducing the time penalty associated with switching tuners when signal degradation occurs.
Solution Approach 2:
The system maintains continuous useful action by having multiple tuners operate in parallel - one tuner continues primary reception while others simultaneously scan and evaluate alternative signals. This continuity ensures that when switching is necessary, a validated alternative is already available, minimizing interruption to service and reducing the effective time loss from switching operations.
Data Source
AI summary
Techniques are described for expanding and/or improving the Advanced Television Systems Committee (ATSC) 3.0 television protocol in robustly delivering the next generation broadcast television services. A receiver uses relative location and direction of motion of the receiver with respect to each broadcaster to determine which tuner/demodulator(s) to use to present a service and which to use to scan for services.