Frequency agility system for co-frequency forwarding of digital television

A digital TV and digital TV signal technology, applied in the field of frequency-agile systems, can solve problems such as the quality of digital TV signals in areas that cannot be covered, and achieve the effects of good performance, wide range of occasions, and convenient installation

Active Publication Date: 2012-09-19
SUNWAVE COMM
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the defects of the above-mentioned prior art, and provides a frequency-agile system for co-frequency forwarding of digital TV, which can effectively solve the problem of digital TV signal quality in areas that cannot be covered by digital TV transmitters

Method used

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  • Frequency agility system for co-frequency forwarding of digital television
  • Frequency agility system for co-frequency forwarding of digital television
  • Frequency agility system for co-frequency forwarding of digital television

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with accompanying drawing and embodiment, but should be understood that these embodiments do not limit the scope of the present invention, without departing from the spirit and scope of the present invention, those skilled in the art can make changes and modifications to the present invention Improved to make it suitable for different use cases, conditions and implementations.

[0017] Referring to the description of the above drawings, the present invention relates to a frequency-agile system for co-frequency forwarding of digital television (see figure 2 ), mainly including a donor antenna 1, a frequency-agile host 2, a digital TV power amplifier 3, a retransmission antenna 4, an input power detector 30 and an output power detector 31, wherein the donor for receiving digital TV signals from the main transmitting station The antenna 1 is connected to the input end of the frequency-agile host 2 throug...

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Abstract

The invention relates to a frequency agile system for co-frequency forwarding of a digital television, which mainly comprises a donor antenna, a frequency agile host machine, a digital television power amplifier and a retransmitting antenna, wherein the donor antenna for receiving a digital television signal derived from a main transmitting station is connected with the input end of the frequencyagile host machine by a coaxial cable; the digital television power amplifier for power amplification is connected with the output end of the frequency agile host machine by a coaxial cable; and the retransmitting antenna for transmitting a digital television signal is connected with the output end of the digital television power amplifier by a coaxial cable. The invention has the advantage of being suitable for different frequency bands and different output power of the c-frequency forwarding of the digital television. The use performance is favorable, the quality of the digital television signal and the signal coverage of a blind area can be ensured, and the digital television signal is enabled to forwards extend continuously; and a working channel of the frequency agile system can be configured by software according to the requirement of practical engineering application without waiting and restarting and is speedy and convenient.

Description

technical field [0001] The invention relates to digital TV transmitting equipment, in particular to a frequency-agile system for digital TV same-frequency forwarding. Background technique [0002] Under the situation that digital TV is increasingly popularized, in some shopping malls, underground parking lots, tunnels, high-rise buildings, elevators, entertainment venues, and suburban and remote areas, it will be unimaginable without the coverage of digital TV signals. Combined with the characteristics of digital TV transmitters, it is impossible to set up a transmitting station in every area with poor digital TV signal coverage or signal blind area, so frequency-agile devices for digital TV co-frequency forwarding are usually set up in these areas. Ok solved those problems. The frequency-agile system uses a directional antenna to introduce digital TV signals, filters and amplifies the digital TV signals, and then transmits them to the shadow area with a directional antenna...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/38
Inventor 杜熠竣
Owner SUNWAVE COMM
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