ATSC Receiver Channel Map Update Mechanism
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Solution Overview
Problem
Current ATSC 1.0 receivers cannot detect new signaling for automated channel changing data during the transition from ATSC 1.0 to 3.0 broadcasts, leading to unreliable channel schedule information due to unpredictable changes in channel assignments.
Innovation Solution
Incorporating a channel change detection feature into digital video receivers to perform initial and automatic re-scans of the video channel spectrum, using ATSC 1.0 and 3.0 tuners to generate and update channel maps, and presenting user interfaces for consolidated or separate listings of ATSC 1.0 and 3.0 channels based on detected channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If ATSC 1.0 receivers are used during the transition period, then legacy compatibility is maintained, but channel schedule information becomes unreliable due to inability to detect new signaling
Solution Approach 1:
The receiver is designed to perform multiple functions: it can detect both traditional PSIP signaling (ATSC 1.0) and new channel assignment signaling (ATSC 3.0 transition signaling). The system universally handles both legacy and new broadcast formats, allowing it to adapt to different signaling types during the transition period while maintaining reliable channel information
Solution Approach 2:
The receiver acts as an intermediary that translates and processes signaling from both ATSC 1.0 and ATSC 3.0 formats. It mediates between the incoming broadcast signals and the user interface, converting various signaling formats into reliable channel schedule information that the user can access regardless of the broadcast standard being used
2Reliability
If automatic re-scan is performed to detect channel changes, then channel map reliability is improved, but device complexity increases
Solution Approach 1:
The receiver performs preliminary automatic re-scans at predetermined intervals to proactively detect channel changes before the user experiences issues. By performing this action in advance and automatically, the system maintains up-to-date channel maps without requiring complex user intervention or manual scanning procedures
Solution Approach 2:
The receiver performs self-service through automatic re-scanning and self-updating of channel maps. The system autonomously detects channel changes, updates its internal channel map, and manages the transition between different signaling formats without requiring external intervention, thereby reducing operational complexity while maintaining reliability
3Adaptability or versatility
If consolidated channel listing is provided for both ATSC 1.0 and 3.0 channels, then user interface versatility is improved, but information organization complexity increases
Solution Approach 1:
The channel listing is segmented and organized by broadcast standard (ATSC 1.0 versus ATSC 3.0), with clear visual differentiation between the two types. This segmentation allows the interface to present consolidated information while maintaining clear organizational structure, reducing the complexity of managing mixed-standard channel lists through systematic categorization
Data Source
AI summary
A channel change detection feature is incorporated into future ATSC 1.0 receivers, future ATSC 3.0 receivers, and through a modification, to legacy ATSC 1.0 receivers that can detect new Program and System Information Protocol (PSIP) signaling. A TV or other digital video receiver occasionally performs an automatic channel programming scan. If it detects that a channel has disappeared, then the receiver re-scans the spectrum to update the channel map. If any changes in the channel map occurs, an indication is implied that some ATSC 1.0 and ATSC 3.0 stations have been shuffled.