ATSC 3.0 Receiver Frame Interval Control for Signal Isolation
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Solution Overview
Problem
The ATSC 3.0 standard does not specify where in the frame information regarding reception periods of other signals is described, making it difficult for receivers to extract and receive only the terrestrial digital broadcasting signal when it is mixed with other signals.
Innovation Solution
A receiver configuration that includes a reception unit, a reception interval acquisition unit, a frame length acquisition unit, and a reception control unit to stop reception processing based on the difference between the reception interval and frame length, along with optional clocking, demodulation, error correction, and subtraction processing to isolate the terrestrial digital broadcasting signal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the receiver continuously receives all incoming signals, then no signal is lost, but reception processing cannot be stopped for other signals mixed with ATSC 3.0 signals
Solution Approach 1:
The invention extracts the frame length information from the ATSC 3.0 signal structure and uses it to isolate only the desired signal portions. By calculating the difference between the reception interval and frame length, the system extracts and processes only the ATSC 3.0 signals while ignoring other mixed signals, thus achieving selective reception without losing the target signal.
2Loss of information
If the receiver processes all received frames, then all signal information is captured, but processing time and resources are wasted on non-ATSC 3.0 signals
Solution Approach 1:
The invention performs preliminary analysis by detecting the frame length of ATSC 3.0 signals and calculating the reception interval before full processing. This preliminary action identifies which time periods contain ATSC 3.0 signals, allowing the system to pre-determine which frames should be processed and which should be skipped, thereby avoiding wasted processing time on non-target signals.
Solution Approach 2:
The system uses periodic frame structures of ATSC 3.0 signals to determine reception intervals. By leveraging the periodic nature of the signal frames and calculating the interval between them, the receiver can rhythmically process only the relevant signal portions while skipping intervening non-ATSC 3.0 signals, thus reducing overall processing time while maintaining information completeness.
3Use of energy by moving object
If the receiver stops reception processing for extended periods, then power consumption is reduced, but signal reception may be interrupted
Solution Approach 1:
The invention implements periodic reception by calculating the exact frame length and reception interval of ATSC 3.0 signals. The receiver stops processing during intervals when non-ATSC 3.0 signals are present and resumes processing precisely when ATSC 3.0 frames arrive. This periodic on-off processing pattern reduces power consumption during idle periods while ensuring continuous reception of the target signal without interruptions.
Data Source
AI summary
In a receiver that receives signals of the ATSC 3.0 standard, a terrestrial digital broadcasting signal is extracted from the received signals. A reception unit performs reception processing of sequentially receiving a predetermined number of reception target frames, each of which is a transmission unit of the terrestrial digital broadcasting signal. A reception interval acquisition unit obtains, as a reception interval, an interval between respective reception start timings of the predetermined number of reception target frames. A frame length acquisition unit acquires a frame length of each of the reception target frames on the basis of the reception target frames. A reception control unit stops the reception processing for a period of a length of a difference between the reception interval and the frame length.