Digital Radio Tuner Architecture for Multi-Station Reception
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Solution Overview
Problem
Traditional analog tuner architectures are inefficient in supporting multiple radio stations simultaneously, leading to increased power consumption, larger board size, and higher costs, while also facing challenges in accurately measuring audience reach due to reliance on surveys.
Innovation Solution
An audio system comprising a receiver module, Analog to Digital Converter (ADC), and processor that digitizes RF input signals, allows selection and demodulation of specific radio stations, and generates time division multiplexed signals, enabling seamless access to multiple radio stations and improved audience measurement through data analytics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional analog tuner architectures are used to support multiple radio stations simultaneously, then the number of radio stations that can be received increases, but power consumption increases and board size increases
Solution Approach 1:
The patent merges multiple tuner functions into a single analog tuner by using multiple demodulators to process different frequency channels simultaneously. This allows one tuner to support multiple radio stations by sharing the tuning functionality across several demodulation paths, thereby reducing the need for multiple separate tuners and lowering overall power consumption.
Solution Approach 2:
The patent segments the signal processing function by separating tuning from demodulation. The single analog tuner is divided into multiple logical paths, each feeding a separate demodulator that handles a specific frequency channel. This segmentation allows parallel processing of multiple stations without requiring multiple complete tuner assemblies.
2Adaptability or versatility
If traditional analog tuner architectures are used to support multiple radio stations simultaneously, then the number of radio stations that can be received increases, but board size increases
Solution Approach 1:
The patent combines multiple tuner functions into a single physical tuner component by implementing multiple demodulators that share the same tuning hardware. This consolidation significantly reduces the board space required compared to using separate analog tuners for each radio station, as the shared tuner architecture eliminates redundant RF front-end components.
3Reliability
If analog tuners are used, then radio station reception is achieved, but system power increases due to high power consumption of analog tuners
Solution Approach 1:
The patent merges the tuning function into a single low-power analog tuner while using multiple digital demodulators to handle different frequency channels. This architecture maintains reliable radio station reception by preserving the analog tuning capability while reducing overall power consumption by eliminating the need for multiple high-power analog tuners.
4Adaptability or versatility
If RF input signal bandwidth is increased to support more radio stations, then more stations can be received, but power consumption increases
Solution Approach 1:
The patent segments the wide bandwidth RF signal into multiple narrower frequency channels, each processed by a separate demodulator. This segmentation allows the system to receive multiple radio stations across a wide bandwidth while keeping each individual signal processing path power-efficient, avoiding the need to process the entire wide bandwidth simultaneously in a single high-power path.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system efficiently supports multiple radio stations with reduced power consumption and costs, while providing accurate audience measurement and interaction capabilities between users and broadcasters.
Implementation Method 1
An Analog to Digital Converter (ADC) coupled to the receiver, where the ADC is configured to digitize the received RF input signal
Data Source
AI summary
Disclosed here is an audio system and a method of operating the same. The audio system comprises a receiver module for receiving radio frequency (RF) input signal associated with a plurality of radio stations, an Analog to Digital Converter (ADC) coupled to the receiver for digitizing the received RF input signal and a stored set of computer-executable instructions. The instructions include those for selecting a particular radio station from the plurality of radio stations, shifting the frequency of the particular radio station to an intermediate frequency (IF), demodulating the frequency shifted portion of the RF input signal to retrieve an output signal and generating a time division multiplexed signal based on the output signal.