Transmitter Frequency Coordination for Redundant RDS Data
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional RDS/RDS2 data broadcasting systems face limitations in data capacity and scalability, leading to conflicts when multiple transmitters transmit the same data at the same frequency, resulting in inefficient data reception by receivers.
Innovation Solution
A method and system for controlling transmitters to transmit different RDS/RDS2 auxiliary data by comparing frequencies and stopping redundant transmissions, allowing efficient data broadcasting through multiple transmitters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If multiple transmitters transmit RDS auxiliary data at the same frequency, then data broadcasting coverage is expanded, but data conflicts occur and receivers fail to properly receive the auxiliary data
Solution Approach 1:
The patent segments the data transmission by frequency, dividing the auxiliary data transmission into multiple frequency channels (first frequency and second frequency). This allows multiple transmitters to operate simultaneously without conflict by assigning different frequency segments to different transmitters, thereby maintaining both expanded coverage and reliable reception.
Solution Approach 2:
The patent introduces a frequency dimension to resolve the conflict. Instead of having multiple transmitters compete on the same frequency (one-dimensional conflict), the system transitions to multi-dimensional operation by utilizing multiple frequency channels. This dimensional expansion allows simultaneous transmissions without interference, solving the contradiction between coverage expansion and reception reliability.
2Quantity of substance
If RDS2 uses additional subcarriers to increase data capacity, then data transmission capability is improved, but system complexity increases
Solution Approach 1:
The patent segments the data stream into multiple frequency channels (first frequency for FM radio broadcast, second frequency for auxiliary data). This segmentation allows the system to utilize additional subcarriers (66.5 kHz, 71.25 kHz, 76 kHz) effectively, increasing data capacity while managing complexity by organizing transmissions into distinct frequency segments rather than mixing all data on a single channel.
Data Source
Figure 1
Figure 2
Figure 3(a)~3(b)
AI summary
Disclosed herein is a method for controlling a transmitter may include transmitting FM radio broadcast to a receiver, transmitting auxiliary data of a radio data system to the receiver and another transmitter at a first frequency, receiving auxiliary data of the radio data system at a second frequency from the other transmitter, and stopping the transmission of the auxiliary data of the radio data system at the first frequency based on that the auxiliary data of the radio data system at the second frequency corresponds to the auxiliary data of the radio data system at the first frequency.