KR20080026715A - Apparatus for receiving digital broadcast and lna module thereof - Google Patents

Apparatus for receiving digital broadcast and lna module thereof Download PDF

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Publication number
KR20080026715A
KR20080026715A KR1020060091612A KR20060091612A KR20080026715A KR 20080026715 A KR20080026715 A KR 20080026715A KR 1020060091612 A KR1020060091612 A KR 1020060091612A KR 20060091612 A KR20060091612 A KR 20060091612A KR 20080026715 A KR20080026715 A KR 20080026715A
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South Korea
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tuner
low noise
digital broadcasting
broadcasting signal
antenna
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KR1020060091612A
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Korean (ko)
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최경문
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엘지이노텍 주식회사
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Publication of KR20080026715A publication Critical patent/KR20080026715A/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/426—Internal components of the client ; Characteristics thereof
    • H04N21/42607—Internal components of the client ; Characteristics thereof for processing the incoming bitstream
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2213/00—Indexing scheme relating to interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F2213/0042—Universal serial bus [USB]
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/294—Indexing scheme relating to amplifiers the amplifier being a low noise amplifier [LNA]

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Noise Elimination (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)

Abstract

A digital broadcasting receiver and an LNA module thereof are provided to attach or detach the LNA module to/from a tuner by using an integrated USB port terminal and amplify and receive a digital broadcasting signal by the attached LNA module when the receive sensitivity of the digital broadcasting signal is deteriorated, thereby obtaining good receive sensitivity. An antenna(11) receives a digital broadcasting signal. A tuner(12) tunes to the digital broadcasting signal received from the antenna as a tuned broadcasting signal, and outputs the tuned digital broadcasting signal. An LNA(Low Noise Amplifier) module(13) is attached to or detached from the tuner according to receive field intensity to amplify the low noise of the received digital broadcasting signal. A user watches the digital broadcasting signal by connecting only the antenna to the tuner when the digital broadcasting signal is stably received. When the digital broadcasting signal is not stably received, the LNA module is connected to the tuner by using an integrated USB(Universal Serial Bus) port terminal(132), and then the antenna is connected to the LNA module.

Description

디지털 방송수신장치 및 그 저잡음증폭기모듈{APPARATUS FOR RECEIVING DIGITAL BROADCAST AND LNA MODULE THEREOF}Digital broadcasting receiver and its low noise amplifier module {APPARATUS FOR RECEIVING DIGITAL BROADCAST AND LNA MODULE THEREOF}

도 1은 본 발명의 일실시예에 따른 디지털 방송수신장치의 블럭도1 is a block diagram of a digital broadcast receiving apparatus according to an embodiment of the present invention.

도 2는 본 발명의 일실시예에 따른 디지털 방송수신장치의 수신 증폭 파형도2 is a reception waveform diagram of a digital broadcast receiver according to an embodiment of the present invention;

*도면의 주요부분에 대한 부호의 설명* * Description of the symbols for the main parts of the drawings *

11; 안테나 입력단 12; 튜너11; An antenna input 12; Tuner

13; 저잡음증폭기모듈 131; 저잡음증폭기13; Low noise amplifier module 131; Low noise amplifier

132; 통합직렬버스 포트 133; 전원장치132; Integrated serial bus port 133; Power supply

본 발명은 디지털 방송수신장치 및 그 저잡음증폭기모듈에 관한 것이다.The present invention relates to a digital broadcast receiver and a low noise amplifier module thereof.

일반적으로 디지털 방송 수신장치, 예를 들면 디지털 텔레비젼은 방송국으로부터 송신안테나를 통하여 송신되는 디지털 방송신호를 디지털 텔레비젼의 수신안테나를 통해서 수신하여 시청하게 되는데, 이때 방송국의 송신안테나로부터 송신되는 디지털 방송신호는 송신거리, 전계강도 및 전파경로에 따라 신호가 감쇄되는 것이 일반적이다.In general, a digital broadcasting receiver, for example, a digital television, receives and views a digital broadcasting signal transmitted from a broadcasting station through a transmission antenna, and receives the digital broadcasting signal transmitted from the transmission antenna of the broadcasting station. It is common to attenuate the signal according to the transmission distance, the electric field strength and the propagation path.

따라서 상기 디지털 텔레비젼은 사용 지역 즉 수신지역에 따라 수신감도의 차이가 발생하게 된다.Accordingly, in the digital television, a difference in reception sensitivity occurs depending on the use area, that is, the reception area.

특히 디지털 방송신호의 수신 전계 강도가 약한 지역인 경우, 표준으로 설정된 디지털 텔레비젼에서는 수신되는 디지털 방송신호 그대로 처리하게 되므로 상기 약한 전계강도로 인하여 원래의 디지털 방송신호로 재현되지 않을 뿐 아니라, 아예 수신되지 않게 된다.Particularly, in a region where the received electric field strength of the digital broadcast signal is weak, the digital TV set as a standard processes the received digital broadcast signal as it is, so that the weak electric field strength does not reproduce the original digital broadcast signal and not receive it at all. Will not.

그럼에도 불구하고 종래의 디지털 텔레비젼은 수신감도 및 수신성능을 튜너 자체에 의존하도록 되어 있어, 수신 전계 강도에 따른 수신감도의 차이가 발생하는 경우 안정된 수신상태를 유지할 수 없는 문제점이 있다.Nevertheless, conventional digital televisions have a problem in that the reception sensitivity and the reception performance are dependent on the tuner itself, so that a stable reception state cannot be maintained when a difference in the reception sensitivity according to the reception field strength occurs.

최근 들어 상기 디지털 방송신호의 수신 전계 강도에 따라 수신감도 및 수신 성능 향상을 위해 상기 튜너 자체에 의존하지 않고 저잡음증폭기(LNA)를 튜너 내부에 장착하여 상기 디지털 방송신호의 수신 전계 강도에 따라 별도의 제어부에서 제어된 신호로 상기 저잡음증폭기(LNA)를 제어하여 수신 감도 및 성능을 향상한 것이 있다.Recently, a low noise amplifier (LNA) is mounted inside a tuner without depending on the tuner itself to improve reception sensitivity and reception performance according to the received electric field strength of the digital broadcast signal. The low noise amplifier (LNA) is controlled by a signal controlled by a controller to improve reception sensitivity and performance.

그러나 상기 튜너 내부에 장착된 상기 저잡음증폭기(LNA)의 경우, 튜너의 동작 범위가 정해져 있어, 가령 사용 지역에 따라 송신거리, 전계 강도 및 전파 경로의 변화에 의하여 수신감도가 크게 변화되는 경우, 용이하게 대처할 수 없게 되므로 안정된 수신 감도 및 성능 향상을 기대할 수 없는 문제점이 있다.However, in the case of the low noise amplifier (LNA) mounted inside the tuner, the operating range of the tuner is determined, and if the reception sensitivity is largely changed due to a change in the transmission distance, the electric field strength, and the propagation path depending on the usage area, There is a problem that can not expect a stable reception sensitivity and improved performance because it can not be coped.

본 발명은 디지털 방송 수신장치의 수신 감도 및 성능을 향상한다.The present invention improves the reception sensitivity and performance of the digital broadcast receiver.

본 발명의 디지털 방송 수신장치는 안테나, 튜너를 포함하는 디지털 방송수신장치에 있어서, 상기 안테나의 튜너 사이에 탈,부착되어 상기 안테나를 통해서 수신되는 디지털 방송신호를 저잡음 증폭하여 상기 튜너에 출력하는 저잡음증폭기모듈을 포함한다.The digital broadcast receiver of the present invention is a digital broadcast receiver including an antenna and a tuner, the noise being detached and attached between the tuners of the antenna and low noise amplifying the digital broadcast signal received through the antenna to output to the tuner. It includes an amplifier module.

또한 본 발명의 저잡음증폭기모듈은 디지털 방송 수신장치의 안테나와 튜너에 탈,부착하는 인터페이스부와, 상기 인터페이스부를 통해서 상기 안테나로부터 수신되는 디지털방송신호의 저잡음을 증폭하는 저잡음증폭기를 포함한다.In addition, the low noise amplifier module of the present invention includes an interface unit that is attached and detached to the antenna and tuner of the digital broadcast receiver, and a low noise amplifier for amplifying low noise of the digital broadcast signal received from the antenna through the interface unit.

이하 첨부되는 도면에 의거 본 발명을 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명의 일실시예에 따른 디지털 텔레비젼의 블럭도이고, 도 2는 본 발명의 일실시예에 따른 디지털 텔레비젼의 수신 증폭 파형도이다.1 is a block diagram of a digital television according to an embodiment of the present invention, and FIG. 2 is a reception amplification waveform diagram of a digital television according to an embodiment of the present invention.

디지털 방송신호를 수신하는 안테나(11)와; An antenna 11 for receiving a digital broadcast signal;

상기 안테나(11)로부터 수신되어 입력되는 디지털 방송신호를 선국된 방송신호로 동조하여 출력하는 튜너(12)와; A tuner 12 for tuning and outputting a digital broadcast signal received and input from the antenna 11 to a tuned broadcast signal;

상기 튜너(12)에는 사용 지역에 따른 수신 전계 강도에 따라 탈,부착하여 수신되는 디지털 방송신호의 저잡음을 증폭하는 저잡음증폭기모듈(13)이 구성된다.The tuner 12 includes a low noise amplifier module 13 for amplifying low noise of a digital broadcast signal received and detached according to a received electric field strength according to a region of use.

상기 저잡음증폭기모듈(13)은 일측에 상기 안테나(11)와 통합직렬버스 포트가 구비되고, 타측에는 상기 튜너(12)와 결합되는 통합직렬버스 포트단자가 구비된다.The low noise amplifier module 13 is provided with an integrated serial bus port on one side and an integrated serial bus port terminal coupled to the tuner 12 on the other side.

상기 저잡음증폭기모듈(13)의 내부에는 상기 통합직렬버스 포트를 통해서 결 합된 안테나(11)로부터 수신되어 입력되는 디지털방송신호를 저잡음 증폭하는 저잡음증폭기(131)와; 상기 저잡음증폭기(131)에서 저잡음 증폭된 신호를 상기 통합직렬버스 포트단자를 통해서 상기 튜너(12)에 연결하는 인터페이스부 예를 들면 통합직렬버스(USB)(132)와, 상기 통합직렬버스(132)를 통해서 저잡음증폭기(131)에 구동전압을 공급하는 전원장치(133)로 구성된다.A low noise amplifier (131) for low noise amplifying the digital broadcast signal received from the antenna (11) coupled through the integrated serial bus port and inside the low noise amplifier module (13); An interface unit for connecting the low noise amplified signal from the low noise amplifier 131 to the tuner 12 through the integrated serial bus port terminal, for example, an integrated serial bus (USB) 132 and the integrated serial bus 132. It is composed of a power supply unit 133 for supplying a driving voltage to the low noise amplifier 131 through.

상기와 같이 구성된 본 발명은 디지털 방송신호가 안테나(11)를 통해서 튜너(12)에 수신되고, 상기 튜너(12)에서는 수신된 방송신호를 원하는 채널로 동조하여 시청할 수 있게 되는데, 이때 상기 튜너(12)로 수신되는 디지털 방송신호는 송신거리, 전계 강도 및 전파경로에 따라 안정된 수신상태를 유지하거나 혹은 수신이 되지 않는 경우가 발생하게 된다.According to the present invention configured as described above, the digital broadcast signal is received by the tuner 12 through the antenna 11, and the tuner 12 can watch the received broadcast signal by tuning to a desired channel, wherein the tuner ( The digital broadcast signal received in 12) may be maintained in a stable state or may not be received depending on the transmission distance, the electric field strength, and the radio wave path.

따라서 상기 디지털 방송신호가 안정되게 수신되는 경우에는 상기 튜너(12)에 안테나(11)만을 접속하여 시청하게 되지만, 상기 수신이 되지 않는 경우에는 상기 튜너(12)에 저잡음증폭기모듈(13)을 자체의 통합직렬버스(132) 포트단자를 이용하여 접속하게 되고, 이어서 상기 저잡음증폭기 모듈(13)에 안테나(11)를 접속하게 된다.Accordingly, when the digital broadcast signal is stably received, only the antenna 11 is connected to the tuner 12 for viewing, but when the reception is not performed, the low noise amplifier module 13 itself is connected to the tuner 12. The integrated serial bus 132 is connected to the port terminal, and then the antenna 11 is connected to the low noise amplifier module 13.

상기 튜너(12)에 접속된 상기 저잡음증폭기 모듈(13)은 내부에 구비된 전원장치(133)로부터 공급되는 구동전압에 의하여 저잡음증폭기(131)와 통합직렬버스(132)가 동작하게 된다.The low noise amplifier module 13 connected to the tuner 12 operates the low noise amplifier 131 and the integrated serial bus 132 by a driving voltage supplied from a power supply 133 provided therein.

상기 전원장치(133)는 구동전압을 공급하기 위해서 자체 전원을 구비하여 저잡음증폭기 모듈(13)의 내부에 구비될 수 있지만, 상기 전원장치(133)를 상기 저잡 음증폭기 모듈(130)의 내부에 구비시키지 않고 상기 통합직렬버스(132)를 통해서 디지털 텔레비젼으로부터 구동전압을 공급받을 수 있다.The power supply 133 may be provided inside the low noise amplifier module 13 with its own power source to supply a driving voltage, but the power supply 133 may be provided inside the low noise amplifier module 130. The drive voltage may be supplied from the digital television through the integrated serial bus 132 without the provision.

그러므로 상기 안테나(11)를 통해서 수신되는 디지털 방송신호는 상기 저잡음증폭기 모듈(13)의 저잡음증폭기(131)에서 도 2에 도시한 바와 같이, 튜너(12)의 주파수대역(50 ~ 900 Mhz)을 따라 일정한 레벨(20dB)로 증폭되어 상기 튜너(12)에 출력하게 되므로, 상기 튜너(12)에서는 사용지역의 송신거리, 전계 강도 및 전파경로에 상관없이 안정된 상태로 입력되는 디지털 방송신호에 의하여 양호한 수신상태를 유지하게 되는 것이다.Therefore, as shown in FIG. 2, the digital broadcast signal received through the antenna 11 receives the frequency band (50 to 900 Mhz) of the tuner 12 from the low noise amplifier 131 of the low noise amplifier module 13. As a result, the tuner 12 is amplified to a predetermined level (20dB) and output to the tuner 12. Therefore, the tuner 12 is good by a digital broadcast signal input in a stable state regardless of a transmission distance, an electric field strength, and a propagation path of a use area. It keeps receiving state.

이상에서 설명한 바와 같이 본 발명은 사용지역에 따라 수신감도 및 성능이 달라지는 디지털 방송신호를 수신하는 튜너에 통합직렬버스를 이용한 저잡음증폭기 모듈을 탈,부착하도록 함으로써, 상기 디지털 방송신호의 수신 감도가 좋지 않은 경우 부착되는 상기 저잡음증폭기 모듈에 의하여 디지털 방송신호를 증폭하여 수신하도록 함으로써, 송신거리, 전계강도 및 전파 경도에 상관없이 안정된 수신상태를 유지하게 되므로 양호한 수신 효과를 얻을 수 있게 되는 것이다.As described above, the present invention allows a low noise amplifier module using an integrated serial bus to be attached and detached to a tuner for receiving a digital broadcast signal whose reception sensitivity and performance are different according to a region of use, so that the reception sensitivity of the digital broadcast signal is poor. If not, by amplifying and receiving the digital broadcast signal by the low noise amplifier module attached, it is possible to obtain a good reception effect because it maintains a stable reception state regardless of transmission distance, electric field strength and radio wave hardness.

Claims (4)

안테나, 튜너를 포함하는 디지털 방송수신장치에 있어서, 상기 안테나의 튜너 사이에 탈,부착되어 상기 안테나를 통해서 수신되는 디지털 방송신호를 저잡음 증폭하여 상기 튜너에 출력하는 저잡음증폭기모듈을 포함하는 디지털 방송 수신장치.A digital broadcast receiver comprising an antenna and a tuner, wherein the digital broadcast receiver includes a low noise amplifier module that is affixed between a tuner of the antenna and is attached to the tuner to low noise amplify and output the digital broadcast signal to the tuner. Device. 디지털 방송 수신장치의 안테나와 튜너에 탈,부착하는 인터페이스부와, 상기 인터페이스부를 통해서 상기 안테나로부터 수신되는 디지털방송신호의 저잡음을 증폭하는 저잡음증폭기를 포함하는 저잡음증폭기모듈.And a low noise amplifier for amplifying low noise of a digital broadcast signal received from the antenna through the interface unit. 제 2 항에 있어서, 상기 인터페이스부 및 저잡음증폭기에 전원을 공급하는 전원장치를 더 포함하는 저잡음증폭기모듈.The low noise amplifier module of claim 2, further comprising a power supply unit supplying power to the interface unit and the low noise amplifier. 제 2 항에 있어서, 상기 인터페이스부는 통합직렬버스 포트인 것을 특징으로 하는 저잡음증폭기모듈.3. The low noise amplifier module of claim 2, wherein the interface unit is an integrated serial bus port.
KR1020060091612A 2006-09-21 2006-09-21 Apparatus for receiving digital broadcast and lna module thereof KR20080026715A (en)

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KR1020060091612A KR20080026715A (en) 2006-09-21 2006-09-21 Apparatus for receiving digital broadcast and lna module thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020060091612A KR20080026715A (en) 2006-09-21 2006-09-21 Apparatus for receiving digital broadcast and lna module thereof

Publications (1)

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KR20080026715A true KR20080026715A (en) 2008-03-26

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Country Status (1)

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KR (1) KR20080026715A (en)

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