System and method for improving indoor coverage rate of terrestrial digital television signals

A terrestrial digital TV and coverage technology, which is applied to components of TV systems, components of color TVs, TVs, etc. to simplify wiring and prevent saturation.

Inactive Publication Date: 2014-10-08
BEIJING DIGITAL TV NAT ENG LAB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide a system and method for improving the indoor coverage of terrestrial digital TV signals, which is used to solve the problem of increasing the indoor coverage of terrestrial digital TV

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  • System and method for improving indoor coverage rate of terrestrial digital television signals
  • System and method for improving indoor coverage rate of terrestrial digital television signals
  • System and method for improving indoor coverage rate of terrestrial digital television signals

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Embodiment Construction

[0035] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0036] Such as figure 2 As shown, this embodiment provides a system for improving the indoor coverage of terrestrial digital television signals, including a receiving antenna 1, a low-pass filter 2, a multi-stage low-noise amplifier 3 and a transmitting antenna 4 connected in sequence ;

[0037] The receiving antenna 1, which is installed outdoors, is used to receive outdoor terrestrial digital television signals and transmit them to the low-pass filter;

[0038] The low-pass filter 2 is used to filter out interference signals in the received terrestrial digital television signal, and transmit the terrestrial digital television signal after filtering out the interference signal to the multi-stage low noise amplifi...

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Abstract

The invention relates to a system and method for improving the indoor coverage rate of terrestrial digital television signals. The system comprises a receiving antenna, a low pass filter, multiple stages of low noise amplifiers and a transmitting antenna. The receiving antenna, the low pass filter, the multiple stages of low noise amplifiers and the transmitting antenna are connected in sequence. The receiving antenna is arranged outdoors and used for receiving the outdoor terrestrial digital television signals. The low pass filter is used for filtering out interference signals in the received terrestrial digital television signals. The multiple stages of low noise amplifiers are used for amplifying the terrestrial digital television signals. The low noise amplifier of the last stage is a bypass mode low noise amplifier and used for avoiding saturation. The transmitting antenna is arranged indoors and used for transmitting the received terrestrial digital television signals indoors. The multiple stages of low noise amplifiers are adopted to amplify the outdoor signals, the signals are transmitted indoors, and therefore effective coverage of the terrestrial digital television indoor signals is achieved.

Description

technical field [0001] The invention relates to the technical field of digital TV information transmission, in particular to a system and method for improving indoor coverage of terrestrial digital TV signals. Background technique [0002] At present, TV has become an indispensable household appliance in many families, and people's requirements for TV signals are getting higher and higher. Most families live in reinforced concrete rooms, and the TV is generally far away from the window, and the glass of many windows currently has a signal isolation function. Therefore, when the terrestrial digital signal penetrates the window and enters the deep part of the room, the signal attenuation will be very large, which means that the indoor coverage of the terrestrial digital TV is very poor, making it very difficult to receive the terrestrial digital TV indoors. [0003] The existing technology adopts low-power direct-amplification supplementary point technology, such as figure 1...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/44H04N5/38
Inventor 房海东潘长勇宋健鑫马骏
Owner BEIJING DIGITAL TV NAT ENG LAB
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