I. Solution Overview
This solution is applicable to scenarios such as hotels, apartments, parks, and enterprises. It can quickly build a stable, high-definition, and low-cost digital television front-end transmission system. The system adopts a standardized coaxial transmission architecture and does not require complex IP networking. It is compatible with various conventional television terminals and realizes the unified reception, modulation, amplification, distribution, and terminal broadcasting of multiple high-definition television signals. It has the core advantages of simple deployment, stable operation, convenient maintenance, and clear picture quality, fully meeting the regular television viewing needs of commercial venues.
II. System Overall Architecture
The entire system adopts a four-level standardized architecture of signal source access → front-end signal processing → trunk line transmission amplification → household terminal distribution. The entire link is adapted to digital high-definition signal transmission. Relying on mature broadcasting transmission technology, it ensures no interference, no attenuation, and stable high-definition output of the signal.
III. Detailed Implementation Process
1. Signal Source Access (Multi-source Compatibility)
The system supports dual types of high-definition signal access. It can be flexibly selected according to the actual scene of the site, adapting to the program resource requirements of different scenarios. One is satellite high-definition signal, collected through satellite receiving equipment, with rich program resources and stable high-definition quality; the other is local广电 cable high-definition signal， which can be directly connected to the operator's high-definition set-top box to output the signal， adapting to local exclusive channels， paid high-definition channels， etc.， ensuring localization and full coverage of the programs.
2. Front-end Signal Modulation Processing (Core Section)
All types of high-definition audio and video signals are uniformly connected to the Weishi Jie high-definition digital modulator. The equipment will encode， modulate， and integrate multiple high-definition program signals， converting them into standard RF coaxial signals to achieve single-link output of multiple programs. This device supports high-definition signal lossless processing， can precisely match the broadcasting transmission standards， and eliminates problems such as picture lag， screen distortion， and signal distortion. It also supports channel free adjustment， adapting to different numbers of program expansion requirements.
3. Trunk Line Signal Amplification Transmission
The modulated coaxial RF signal is connected to the Weishi Jie dedicated trunk amplifier. To address the signal attenuation caused by long-distance coaxial cable transmission and multi-story building wiring， the equipment can intelligently compensate for signal loss， balance line levels， and enhance signal transmission stability， effectively extending the transmission distance and ensuring uniform signal strength at the main line， avoiding weak signal at the remote end and blurry picture quality problems.
4. Signal Distribution and Terminal Broadcasting
The stable main trunk signal is distributed precisely to each digital television terminal through professional signal distributor and splitter. The entire process uses standardized coaxial wiring， and the terminal does not require an additional set-top box. The wiring can directly receive high-definition television programs， making the deployment convenient and the later maintenance simple.
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