Early Warning Detection Flag for Seismic Signal Processing
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Solution Overview
Problem
Current seismic-motion warning information decoding systems in receivers experience delays in notifying users due to the need to receive all 204 bits of the AC signal before transmitting warning information, leading to delayed activation of devices for alerting users about seismic events.
Innovation Solution
A receiving device and method that outputs a detection flag indicating the presence of warning information, allowing processing to start before receiving all bits, using a semiconductor chip configuration where the detection flag is supplied from one chip to another to initiate warning output processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the system waits to receive all 204 bits of the AC signal before transmitting warning information, then the complete warning information can be ensured, but the notification time to users is delayed
Solution Approach 1:
The system performs preliminary detection of the configuration identification field (bits 2-4) to identify seismic-motion warning information before receiving the complete 204-bit AC signal. This preliminary action allows the system to prepare for rapid notification while maintaining reliability through subsequent verification of the complete signal.
Solution Approach 2:
The system uses partial action by detecting only the critical configuration identification field (3 bits) rather than waiting for the entire 204-bit signal. This partial detection enables early warning transmission while the complete signal continues to be received and verified in parallel, reducing notification delay without sacrificing information completeness.
2Measurement precision
If the system processes the complete 204-bit AC signal before outputting warning, then accurate warning information is obtained, but the response speed is reduced
Solution Approach 1:
The AC signal processing is segmented into multiple independent stages: configuration identification detection (bits 2-4), synchronization signal verification (bits 5-17), and complete signal reception (all 204 bits). This segmentation allows the system to proceed with warning transmission after detecting the configuration field, while continuing to verify the complete signal for accuracy.
Solution Approach 2:
The configuration identification detection is performed as a preliminary action before complete signal reception. The system detects the 3-bit configuration field to identify seismic-motion warning information, then proceeds with warning transmission while continuing to receive and verify the remaining bits for accuracy confirmation.
3Device complexity
If the system uses a single semiconductor chip for both receiving and controlling, then device complexity is reduced, but signal transmission time between processing stages increases
Solution Approach 1:
The receiving means and controlling means are merged into a single integrated semiconductor chip. The detection flag signal is transmitted internally within the chip from the receiving means to the controlling means, eliminating external connection delays and reducing overall device complexity while maintaining fast response times.
Data Source
AI summary
A receiving device includes: a receiving section configured to output a detection flag indicating that warning information is transmitted or at least part of the warning information if the warning information is transmitted; and a controlling section configured to start processing for outputting warning if the detection flag or the at least part of the warning information is supplied, wherein the supply of the detection flag or the at least part of the warning information to the controlling section is carried out by input of the detection flag or the at least part of the warning information output from a pin of a first semiconductor chip on which the receiving section is mounted to a pin of a second semiconductor chip on which the controlling section is mounted.