Title:
SIGNAL DETECTION BAND DISPLAY ACTIVE DTV DIGITAL TELEVISION AMPLIFIER
Document Type and Number:
WIPO Patent Application WO/2021/082121
Kind Code:
A1
Abstract:
Provided is a signal detection band display active DTV digital television amplifier, wherein same is aimed at detecting the signal intensity of the current position of an antenna while amplifying a signal, and is connected between the antenna and a coaxial cable terminal. The amplifier is characterized by comprising: a first-stage signal amplification circuit, a second-stage signal amplification circuit, a signal shunt circuit and a signal detection circuit. The first-stage signal amplification circuit is connected to an antenna and is used for performing first-stage amplification on an acquired antenna signal; the signal shunt circuit is used for dividing the antenna signal that has been subjected to first-stage amplification into two paths and distributing the two paths to the signal detection circuit and the second-stage signal amplification circuit; the second-stage signal amplification circuit is connected to a coaxial cable and is used for performing second-stage amplification on the antenna signal and outputting the antenna signal to a coaxial cable of a feeder line; and the signal detection circuit is connected to a single-chip microcomputer and used for feeding back a collected antenna signal to the single-chip microcomputer, and the single-chip microcomputer is connected to a display screen to display the signal intensity in real time.
Inventors:
LIU XIAOBING (CN)
LI QIN (CN)
LI QIN (CN)
Application Number:
PCT/CN2019/120239
Publication Date:
May 06, 2021
Filing Date:
November 22, 2019
Export Citation:
Assignee:
JIANGXI INNOVATION TECH CO LTD (CN)
International Classes:
G01R19/25; H04B1/18; H04N5/445
Foreign References:
| JP2004214939A | 2004-07-29 | |||
| CN102570032A | 2012-07-11 | |||
| CN202871967U | 2013-04-10 | |||
| US20060264111A1 | 2006-11-23 | |||
| KR20010112498A | 2001-12-20 | |||
| GB2303264A | 1997-02-12 | |||
| US6292232B1 | 2001-09-18 |
Attorney, Agent or Firm:
ZHONGSHAN MINGYANG PATENT TRADEMARK OFFICE (GENERAL PARTNERSHIP) (CN)
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