Single Tuner for Digital Terrestrial and Cable Broadcasting Signals
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing broadcast receivers require multiple tuners to process different digital broadcasting signals, leading to increased complexity, size, and cost, as well as the need for additional components like RF splitters and switches.
Innovation Solution
A broadcast receiver with a single tuner unit that converts and demodulates both digital terrestrial and cable broadcasting signals into intermediate frequency, eliminating the need for separate tuners and components by using a demodulator that outputs a transport stream, which is then decoded.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple tuners are used to process different digital broadcasting signals (terrestrial and cable), then the ability to process various broadcasting modes is improved, but the device complexity and size increase
Solution Approach 1:
The patent implements a single tuner capable of processing both digital terrestrial and digital cable broadcasting signals by dynamically adjusting its operating parameters. The tuner can adapt its frequency range and modulation demodulation settings based on the input signal type, eliminating the need for separate dedicated tuners for each broadcasting mode. This multi-functional approach reduces device complexity while maintaining versatility across different broadcasting standards.
Solution Approach 2:
The patent employs dynamic parameter adjustment within the single tuner to adapt to different broadcasting modes. The tuner's frequency range, local oscillator settings, and demodulation algorithms are dynamically reconfigured based on whether the input signal is terrestrial or cable broadcasting. This dynamic adaptability allows one tuner to replace multiple static tuners, reducing overall device complexity.
2Adaptability or versatility
If multiple tuners are used to handle different broadcasting signals, then signal processing capability is improved, but the device size increases
Solution Approach 1:
The single tuner is designed with universal processing capability to handle both digital terrestrial and digital cable broadcasting signals. By integrating multiple signal processing functions into one tuner unit, the patent eliminates the need for multiple separate tuner modules, thereby reducing the overall device volume while maintaining comprehensive signal processing capability.
Solution Approach 2:
The patent merges the functions of multiple dedicated tuners into a single integrated tuner unit. By combining terrestrial and cable signal processing capabilities within one physical component, the device size is reduced while maintaining the ability to process various broadcasting signals.
3Reliability
If multiple tuners and additional components (RF splitter, switches) are used, then broadcasting signal reception is improved, but the device complexity and cable requirements increase
Solution Approach 1:
The single tuner is designed with universal input capability that can directly process both digital terrestrial and digital cable broadcasting signals without requiring additional components like RF splitters or switches. The tuner internally adapts its configuration based on the signal type, simplifying the overall system architecture while maintaining reliable signal reception across different broadcasting modes.
Solution Approach 2:
The patent extracts and eliminates the need for additional components such as RF splitters and switches by designing a single tuner with direct multi-mode input capability. This extraction of unnecessary components reduces device complexity while preserving the ability to reliably receive different broadcasting signals.
Data Source
Figure 1~3
Figure 4
AI summary
A tuner and a broadcast receiver having the tuner are provided. The tuner comprises a tuner unit converting one of broadcasting signals, which is selectively input, into a signal having an intermediate frequency and a demodulator demodulating the converted signal having the intermediate frequency through a demodulation mode of the input signal.