Broadcast Switching Device for FM and CMMB Signal Optimization
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Solution Overview
Problem
Existing techniques fail to provide optimal broadcasting experiences to users due to limitations in signal quality and coverage, particularly in urban areas, as FM signals offer limited tone quality and CMMB signals are not fully popularized, leading to poor reception in certain regions.
Innovation Solution
A broadcast switching device and method that dynamically switches between FM and CMMB signals based on signal strength, prioritizing digital CMMB signals for better tone quality and switching to FM for wider coverage when signal strength falls below a threshold, ensuring continuous and uninterrupted broadcasting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If FM broadcast signals are used, then signal coverage is wide and reception is convenient, but tone quality is limited due to analog signal disadvantages
Solution Approach 1:
The patent combines both FM and CMMB signal reception capabilities into a single terminal device, allowing the system to merge the wide coverage advantage of FM signals with the high quality advantage of CMMB signals. The terminal includes both FM and CMMB reception modules that work together to provide complementary functionality.
Solution Approach 2:
The patent implements dynamic switching between FM and CMMB signals based on real-time signal strength detection. When CMMB signal strength is insufficient, the system dynamically switches to FM signals to maintain continuous broadcasting, and vice versa. This dynamic adaptation resolves the contradiction by selecting the optimal signal source based on current environmental conditions.
2Reliability
If CMMB broadcast signals are used, then signal stability and program content richness are superior, but reception is poor in certain urban areas or small-sized cities
Solution Approach 1:
The patent implements dynamic switching between CMMB and FM signals based on real-time signal strength detection. When CMMB signal strength is insufficient in certain areas, the system automatically switches to FM signals to maintain continuous broadcasting coverage. This dynamic adaptation ensures both high reliability where CMMB is available and wide coverage where FM supplements the system.
Solution Approach 2:
The terminal device is designed with multi-functionality to receive both CMMB and FM signals, making it universally compatible with different broadcasting systems. This universal reception capability allows the device to operate effectively across different geographic regions regardless of which broadcasting system is dominant or available.
3Ease of operation
If only FM reception is supported, then signal coverage is wide and reception is convenient, but optimal broadcasting experiences cannot be provided due to limited tone quality
Solution Approach 1:
The patent merges FM and CMMB reception systems into a single terminal, combining the operational simplicity of FM reception with the superior audio quality of CMMB. The system maintains the ease of automatic reception while enhancing quality through intelligent signal selection and switching between the two broadcasting systems.
4Measurement precision
If only CMMB reception is supported, then digital signal advantages provide Hi-Fi quality and error correction, but signals cannot be well received in certain urban areas or small-sized cities
Solution Approach 1:
The patent combines CMMB and FM reception capabilities in a single terminal, merging the high audio quality and error correction advantages of digital CMMB signals with the wide coverage capability of FM signals. This combination ensures both superior audio quality where available and continuous coverage through FM supplementation.
Solution Approach 2:
The system dynamically switches between CMMB and FM signals based on real-time signal strength detection. When CMMB signal strength is insufficient in certain areas, the system automatically switches to FM signals to maintain continuous broadcasting coverage, ensuring both high quality and wide coverage are achieved across different geographic regions.
Data Source
AI summary
Provided are a broadcast switching device, method and terminal for switching between broadcast modes of a terminal, and the broadcast switching device includes: a second signal broadcasting unit; a first signal broadcasting unit; a signal reception module, connected respectively to the first signal broadcasting unit and the second signal broadcasting unit, configured to receive a first signal and a second signal and receive preferentially the first signal; a parsing module configured to parse the first signal to acquire signal strength of the first signal; a determination module configured to compare the signal strength of the first signal with a preset broadcasting strength and obtain a comparison result; and a switching module configured to control the signal reception module to receive the second signal when comparison result is that the signal strength of the first signal cannot meet the preset broadcasting strength. By means of technical solutions of the present disclosure, a digital broadcast signal can be switched to an FM broadcast signal when signal strength of the digital broadcast signal cannot meet broadcasting requirements, thus providing a user with optimal audio experiences.