Broadcast Signal Receiver Channel Selection
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Solution Overview
Problem
Broadcast signal receivers face challenges in selecting and processing higher quality signals among multiple broadcast signals providing the same service, especially when receiving ATSC 1.0 and ATSC 3.0 signals simultaneously, and in environments with poor reception, where scalable video coding enhancement layers are vulnerable to noise and signal distortion.
Innovation Solution
The broadcast signal receiver calculates signal quality values for multiple signals, selects the higher quality signal based on these values, and processes the selected layer, switching to terrestrial channels for added value services and prioritizing base layers in poor reception conditions to ensure better image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the broadcast signal receiver receives multiple broadcast signals for the same service, then the user has more channel options, but the user experiences inconvenience of switching among many channels to select a service of interest
Solution Approach 1:
The broadcast signal receiver automatically performs signal quality calculation, comparison, and selection among multiple broadcast signals for the same service without user intervention. The system self-determines which signal to carry through the specific channel based on quality metrics, eliminating the need for users to manually switch between channels to find the best service quality
Solution Approach 2:
The system changes the parameter of signal selection by introducing signal quality values as the decision criterion. Instead of treating all channels equally, the receiver evaluates and compares signals based on calculated quality parameters, automatically selecting the highest quality signal to display, thereby resolving the contradiction between having multiple options and ease of operation
2Manufacturing precision
If the broadcast signal receiver processes enhancement layers in scalable video coding, then the user gets high quality signals, but the signal quality deteriorates in poor reception environments due to noise and signal distortion
Solution Approach 1:
The broadcast signal receiver dynamically adjusts which signal layers to process based on reception conditions. In poor reception environments, the system automatically switches from processing enhancement layers to processing base layers, adapting the signal processing strategy to current channel conditions to maintain reliable reception while optimizing for the best possible quality under those conditions
Solution Approach 2:
The system changes the processing parameter by selectively processing different layers of scalable video coding based on signal quality assessment. When enhancement layers are determined to be too vulnerable to noise, the receiver adjusts its processing to focus on more robust base layers, thereby maintaining reliability while still providing acceptable quality
3Manufacturing precision
If the broadcast signal receiver selects higher quality broadcast signals, then the user gets better video and audio quality, but the system complexity increases due to signal quality calculation and comparison
Solution Approach 1:
The broadcast signal receiver implements self-service by automatically calculating signal quality values and performing comparisons without requiring complex external processing or user intervention. The system autonomously evaluates multiple signals, determines quality metrics, and selects the best signal, managing the complexity internally while providing simplified high-quality output to the user
Data Source
AI summary
Disclosed are a broadcast signal receiver and an operation method thereof. When there are multiple broadcast signals representing the same broadcast content, the broadcast signal receiver calculates signal quality values of the respective broadcast signals, select one of the plurality of broadcast signals for a specific channel, on the basis of the signal quality values, and sets information of the selected broad cast signal as the specific channel in the channel map. Therefore, the broadcast signal receiver can prevent the number of channels from being increased due to a plurality of same channels and can provide a higher quality image to the user.