DVB-T2 Receiver Power Reduction via Physical Layer Signaling
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Solution Overview
Problem
Current emergency warning systems in DVB-T2 broadcasting require significant power consumption to monitor emergency warning information, as receivers must operate system-on-chip components to analyze SI information, leading to high energy usage and inefficient operation during standby modes.
Innovation Solution
Incorporating emergency warning notice information and characteristic details into physical layer signalling within the DVB-T2 frame, specifically using L1-post signalling and IN-BAND signalling, allowing receivers to monitor these signals without activating the system-on-chip, thereby reducing power consumption and enabling low-power operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If receivers operate system-on-chip components to analyze SI information for emergency warning monitoring, then emergency warning information can be detected, but power consumption increases significantly
Solution Approach 1:
The patent extracts the emergency warning detection function from the system-on-chip processing domain and places it in the physical layer signaling domain. By embedding emergency warning indicators directly in L1-post signaling and IN-BAND signaling, the receiver can detect warnings through simple signal monitoring without activating the power-intensive system-on-chip components, thus resolving the contradiction between detection capability and power consumption
Solution Approach 2:
The patent introduces physical layer signaling (L1-post and IN-BAND) as an intermediary mechanism between the broadcast signal and the receiver's processing system. This intermediary carries emergency warning information in a format that can be monitored with minimal power consumption, acting as a bridge that enables warning detection without requiring full system-on-chip operation
2Use of energy by moving object
If receivers remain in standby mode to reduce power consumption, then energy usage decreases, but emergency warning information cannot be monitored
Solution Approach 1:
The patent enables the physical layer signaling system to self-announce emergency warning information without requiring the receiver to actively query or process complex data structures. The emergency warning indicators are embedded in the signaling itself, allowing receivers in standby mode to passively monitor and detect warnings through simple signal presence detection, thus maintaining reliability while consuming minimal power
3Productivity
If system-on-chip components are activated for SI information analysis, then comprehensive data processing is enabled, but operational efficiency during standby decreases
Solution Approach 1:
The patent segments the information processing into two distinct layers: physical layer signaling for emergency warning detection and upper-layer SI information for detailed data processing. By handling emergency warnings at the physical layer with simple signal monitoring, the system maintains productivity for critical functions while extending standby operation time, as the segmentation allows minimal processing during standby with full processing capability available when needed
Data Source
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AI summary
The present technology relates to a reception apparatus, a reception method, a transmission apparatus, and a transmission method that enable provision of an emergency warning service more suited to actual operation. Provided is a reception apparatus that includes a reception section and a demodulation section. The reception section receives a physical layer frame transported as a broadcast signal. The demodulation section demodulates physical layer signalling acquired from the physical layer frame and monitors whether or not emergency warning information has been transported on a basis of emergency warning notice information acquired as a result of the demodulation. In a case where the emergency warning notice information indicates that the emergency warning information has been transported, the reception apparatus starts up automatically. The present technology is applicable, for example, to a transport system for transporting a physical layer frame compliant with a DVB-T2 standard.