RDS-TMC Receiver Deviation Handling for Traffic Data
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Solution Overview
Problem
Radio receivers face delays in processing traffic information when broadcast stations transmit RDS data deviating from transmission standards, leading to incorrect data reception determination and prolonged fault analysis, which hinders timely provision of traffic information to navigation devices.
Innovation Solution
A receiving apparatus with extraction, storage, and updating means to identify broadcast station deviations from transmission standards using deviation tables, allowing for speedy determination of correct data reception and facilitating rapid processing of TMC data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a radio receiver uses standard transmission determination conditions to verify TMC data reception, then data reception accuracy is maintained, but processing time increases significantly when broadcast stations deviate from transmission standards
Solution Approach 1:
The patent pre-stores multiple determination conditions corresponding to different transmission standards in a table structure. When TMC data is received, the system quickly identifies the applicable transmission standard and retrieves the corresponding determination condition from the pre-stored table, eliminating the need for time-consuming fault analysis and standard identification during actual data processing.
Solution Approach 2:
The patent implements a dynamic determination process that adapts to different transmission standards. The system can switch between different determination conditions based on the identified transmission standard, allowing flexible handling of both standard-compliant and non-standard broadcast stations without using a fixed, time-consuming verification process.
2Reliability
If a radio receiver performs comprehensive fault analysis on received TMC data, then data correctness is verified, but the time required for verification increases, delaying traffic information provision
Solution Approach 1:
The patent pre-preares multiple determination conditions for different transmission standards in advance. When TMC data is received, the system identifies the transmission standard and directly applies the corresponding pre-prepared determination condition, avoiding time-consuming comprehensive fault analysis while ensuring data correctness verification.
Solution Approach 2:
The patent changes the verification parameters based on the identified transmission standard. Instead of using a fixed comprehensive verification process, the system selects and applies appropriate determination conditions that match the transmission standard, optimizing the verification process for both accuracy and speed.
3Manufacturing precision
If a radio receiver uses strict transmission standard compliance checking, then data quality is ensured, but processing efficiency decreases when dealing with non-standard broadcast stations
Solution Approach 1:
The patent implements a dynamic verification approach that adapts to different transmission standards. The system identifies the transmission standard used by the broadcast station and applies the corresponding determination condition from pre-stored tables, maintaining data quality through appropriate verification while improving processing efficiency by avoiding unnecessary strict checking for non-standard stations.
Solution Approach 2:
The patent modifies the verification parameters based on the transmission standard identification. For standard-compliant stations, strict determination conditions are applied to ensure data quality. For non-standard stations, appropriate alternative determination conditions are selected from the pre-stored tables, maintaining acceptable data quality while improving processing efficiency.
Data Source
Figure 1A~1B
Figure 2
Figure 3A~3B
AI summary
A receiver comprises a data block identifying section (210) identifying RDS data; a TMC data extracting section (220) extracting TMC data from the identified RDS data; a reception determining section (250) determining whether TMC data has been correctly received, on the basis of a deviation determination condition corresponding to transmission standards of the TMC data; a storage unit storing a deviation processing table (280) in which relationships between the contents of deviation from transmission standards and associated deviation determination conditions are defined; and a determination condition search section (270) searching for a deviation determination condition from the deviation processing table (280) wherein the reception determining section (250) is able to change the determination condition corresponding to the transmission standards of the TMC data to the searched deviation determination condition and to redetermine whether the TMC data has been correctly received, on the basis of the new deviation determination condition.