KR20030003522A - Multi loop through circuit of tuner - Google Patents

Multi loop through circuit of tuner Download PDF

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Publication number
KR20030003522A
KR20030003522A KR1020010039420A KR20010039420A KR20030003522A KR 20030003522 A KR20030003522 A KR 20030003522A KR 1020010039420 A KR1020010039420 A KR 1020010039420A KR 20010039420 A KR20010039420 A KR 20010039420A KR 20030003522 A KR20030003522 A KR 20030003522A
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South Korea
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circuit
tuner
loop
resonance coil
sub
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KR1020010039420A
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Korean (ko)
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KR100384462B1 (en
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이재순
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삼성전기주식회사
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Priority to KR10-2001-0039420A priority Critical patent/KR100384462B1/en
Publication of KR20030003522A publication Critical patent/KR20030003522A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/50—Tuning indicators; Automatic tuning control
    • 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
    • H04N21/4263—Internal components of the client ; Characteristics thereof for processing the incoming bitstream involving specific tuning arrangements, e.g. two tuners

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

Abstract

PURPOSE: A multi loop through circuit of a tuner is provided to realize the multi loop through output by a single circuit for providing signals to a plurality of machines such as a television and a video tape recorder by the single circuit, and prevent the increase of the signal loss. CONSTITUTION: A multi loop through circuit of a tuner includes a main resonance coil(L1) connected between an antenna connector and an input terminal of a tuner part(44), and a plurality of sub resonance coils(L2,L3) positioned by a set interval from the main resonance coil to be connected to a plurality of RF output terminals.

Description

튜너의 멀티 루프쓰루 회로{MULTI LOOP THROUGH CIRCUIT OF TUNER}MULTI LOOP THROUGH CIRCUIT OF TUNER}

본 발명은 튜너의 멀티 루프쓰루 회로에 관한 것으로, 특히 하나의 회로로 멀티 루프쓰루 출력을 구현시킴으로서, 하나의 회로로 TV.VTR등과 같은 복수의 기기에 신호를 제공할 수 있으며, 또한 신호손실의 증가를 방지할 수 있도록 하는 튜너의 멀티 루프쓰루 회로에 관한 것이다.The present invention relates to a multi-loop through circuit of a tuner, and in particular, by implementing a multi-loop through output in one circuit, a single circuit can provide a signal to a plurality of devices such as TV, VTR, etc. The present invention relates to a multi-loop through circuit of a tuner to prevent an increase.

일반적으로, 디지털 지상파 방송은 NTSC나 PAL방식의 아날로그 지상파 방송과는 달리 VSB(Vertical Side Band : 잔류측파대) 변조방식을 사용하고 있으며, 이에 따라 디지털 지상파 방송신호를 간단히 VSB 신호라고 하기도 한다. 이와 같은 디지털 지상파 방송을 수신하는 디지털 지상파 방송튜너는 입력되는 신호를 별도의 신호없이 TV나 VTR등의 다른 기기로 제공하는 루프쓰루 회로를 포함하고 있다.In general, digital terrestrial broadcasting uses VSB (Vertical Side Band) modulation scheme, unlike NTSC or PAL analog terrestrial broadcasting, and thus digital terrestrial broadcasting signal is simply referred to as VSB signal. The digital terrestrial broadcast tuner receiving the digital terrestrial broadcast includes a loop-through circuit that provides an input signal to another device such as a TV or a VTR without a separate signal.

도 1은 종래의 싱글 루프쓰루 회로 및 그 접속구성도로서, 도 1을 참조하면, 종래의 싱글 루프쓰루 회로는 안테나(ANT)를 통한 신호를 내부의 튜너부로 제공하는데, 이에 외부로 제공하기 위한 하나의 싱글 루프쓰루를 포함한다.FIG. 1 is a diagram illustrating a conventional single loop through circuit and a connection configuration thereof. Referring to FIG. 1, a conventional single loop through circuit provides a signal through an antenna ANT to an internal tuner unit. Contains a single loopthrough.

따라서, 이와같은 종래의 싱글 루프쓰루 회로를 적용하는 튜너를 이용하여, 하나의 안테나에 먼저, VSB(10)을 접속하고, 이 VSB(10)의 루프쓰루 회로를 통해서 VTR(20)을 접속하며, 그리고 VTR(20)의 루프쓰루 회로을 통해 TV(30)를 접속하는 등과 같이, 여러대의 기기를 다단계로 접속하는 경우에는 도 1에 도시한 바와같이, 직렬로 접속을 하여야 한다.Therefore, using a tuner to which such a conventional single loop through circuit is applied, one VSB 10 is first connected to one antenna, and the VTR 20 is connected through the loop through circuit of the VSB 10. In addition, when connecting multiple devices in multiple stages, such as connecting the TV 30 through the loop-through circuit of the VTR 20, as shown in FIG.

그러나, 이와같은 접속에 의해서, 하나의 루프쓰루를 거칠 때 마다 대략 8dB정도의 신호손실이 발생하기 되므로, 예를들어, 싱글 루프쓰루를 하번 거치면 8dB, 두 번 거치면 16dB, 세 번 거치면 24dB등으로, 그 종단 기기에서는 신호손실이 너무 커서 화질이 떨어지며, 심하면 화면이 나오지 않는 등과 같은 문제점이 있었던것이다.However, with this type of connection, a signal loss of approximately 8 dB occurs every single loop through, for example, 8 dB for a single loop through, 16 dB for two passes, 24 dB for three passes, etc. In the terminal device, the signal loss is so large that the image quality is degraded.

본 발명은 상기한 문제점을 해결하기 위해 안출한 것으로, 따라서, 본 발명의 목적은 하나의 회로로 멀티 루프쓰루 출력을 구현시킴으로서, 하나의 회로로 TV.VTR등과 같은 복수의 기기에 신호를 제공할 수 있으며, 또한 신호손실의 증가를 방지할 수 있도록 하는 튜너의 멀티 루프쓰루 회로를 제공하는데 있다.SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and therefore, an object of the present invention is to implement a multi-loop through output in one circuit, thereby providing a signal to a plurality of devices such as TV.VTR etc. in one circuit. The present invention also provides a tuner's multi-loop through circuit that can prevent an increase in signal loss.

도 1은 종래의 싱글 루프쓰루 회로 및 그 접속구성도이다.1 is a conventional single loop through circuit and its connection configuration diagram.

도 2는 본 발명에 따른 튜너의 멀티 루프쓰루 회로도이다.2 is a multi-loop through circuit diagram of a tuner according to the present invention.

* 도면의 주요부분에 대한 부호의 설명 *Explanation of symbols on the main parts of the drawings

40 : 튜너42 : 멀티 루프쓰루 회로40: tuner 42: multi-loop through circuit

L1 : 메인 공진코일L2 : 제1 서브 공진코일L1: main resonance coil L2: first sub resonance coil

L3 : 제2 서브 공진코일L3: second sub-resonant coil

상기한 본 발명의 목적을 달성하기 위한 기술적인 수단으로써, 본 발명에 따른 회로는 디지털 지상파 튜너에 내장되는 루프쓰루 회로에 있어서, 안테나 커넥터와 튜너부의 입력단 사이에 접속되는 메인 공진코일; 상기 메인 공진코일로부터 설정간격으로 위치되어 복수의 RF출력단에 접속하는 복수의 서브 공진코일을 구비함을 특징으로 한다.As a technical means for achieving the above object of the present invention, the circuit according to the present invention is a loop-through circuit embedded in a digital terrestrial tuner, comprising: a main resonance coil connected between an antenna connector and an input end of a tuner unit; And a plurality of sub resonant coils positioned at predetermined intervals from the main resonant coil and connected to the plurality of RF output terminals.

상기한 본 발명의 목적을 달성하기 위한 다른 기술적인 수단으로써, 본 발명에 따른 회로는 디지털 지상파 튜너에 내장되는 루프쓰루 회로에 있어서, 안테나 커넥터와 튜너부의 입력단 사이에 접속되는 메인 공진코일; 상기 메인 공진코일로부터 설정간격으로 위치되어 제1 RF출력단에 접속한 제1 서브 공진코일; 상기 메인 공진코일로부터 설정간격으로 위치되어 제2 RF출력단에 접속한 제2 서브 공진코일을 구비함을 특징으로 한다.As another technical means for achieving the above object of the present invention, the circuit according to the present invention is a loop-through circuit embedded in a digital terrestrial tuner, comprising: a main resonance coil connected between an antenna connector and an input end of a tuner unit; A first sub resonance coil located at a predetermined interval from the main resonance coil and connected to a first RF output terminal; And a second sub resonance coil positioned at a predetermined interval from the main resonance coil and connected to a second RF output terminal.

이하, 본 발명에 따른 튜너의 멀티 루프쓰루 회로에 대해서 첨부한 도면을 참조하여 상세하게 설명한다.Hereinafter, a multi-loop through circuit of a tuner according to the present invention will be described in detail with reference to the accompanying drawings.

본 발명에 따른 멀티 루프쓰루 회로는 디지털 지상파 튜너등에 내장되어 안테나를 통해 입력되는 신호를 내부의 튜너부로 제공함과 동시에, 외부에 다른 기기로의 루프쓰로 경로를 제공한다.The multi-loop through circuit according to the present invention is provided in a digital terrestrial tuner or the like to provide a signal input through an antenna to an internal tuner unit, and at the same time, to provide a loop-through path to other devices.

이를 위해, 본 발명에 따른 디지털 지상파 튜너에 내장되는 루프쓰루 회로는 안테나 커넥터와 튜너부의 입력단 사이에 접속되는 메인 공진코일과, 상기 메인 공진코일로부터 설정간격으로 위치되어 복수의 RF출력단에 접속하는 복수의 서브 공진코일로 구성한다.To this end, the loop-through circuit embedded in the digital terrestrial tuner according to the present invention includes a main resonant coil connected between an antenna connector and an input end of a tuner, and a plurality of RF resonators located at predetermined intervals from the main resonant coil. It consists of sub resonance coil of.

도 2는 본 발명에 따른 튜너의 멀티 루프쓰루 회로도로서, 도 2를 참조하면, 본 발명에 따른 튜너의 멀티 루프쓰루 회로는 안테나 커넥터와 튜너부의 입력단 사이에 접속되는 메인 공진코일와, 상기 메인 공진코일로부터 설정간격으로 위치되어 제1 RF출력단에 접속한 제1 서브 공진코일와, 상기 메인 공진코일로부터 설정간격으로 위치되어 제2 RF출력단에 접속한 제2 서브 공진코일로 구성한다.2 is a multi loop through circuit diagram of a tuner according to the present invention. Referring to FIG. 2, a multi loop through circuit of the tuner according to the present invention includes a main resonance coil connected between an antenna connector and an input terminal of a tuner unit, and the main resonance coil. And a first sub resonant coil positioned at a predetermined interval and connected to the first RF output terminal, and a second sub resonant coil positioned at a predetermined interval from the main resonance coil and connected to the second RF output terminal.

이와같이 구성된 본 발명의 튜너의 멀티 루프쓰루 회로에 따른 동작을 첨부도면에 의거하여 하기에 상세히 설명한다.Operation according to the multi-loop through circuit of the tuner of the present invention configured as described above will be described in detail below with reference to the accompanying drawings.

도 2를 참조하여 본 발명에 따른 튜너의 멀티 루프쓰루 회로에 대한 동작을 설명하면, 먼저, 안테나(ANT)를 통한 RF신호는 안테나 커넥터를 통해 디지털 지상파 튜너(40)로 입력된다.Referring to FIG. 2, an operation of a multi-loop through circuit of a tuner according to the present invention will be described. First, an RF signal through an antenna ANT is input to a digital terrestrial tuner 40 through an antenna connector.

상기 튜너(40)의 입력측에 내장된 멀티 루프쓰루 회로(42)는 메인 공진코일(L1)을 통해 상기 안테나(ANT)를 통한 RF신호를 튜너부(44)로 제공하고, 이와 동시에, 복수의 서브 공진코일을 통해서 복수의 RF 출력단에 접속된 복수의 접속기기에 제공한다.The multi-loop through circuit 42 embedded in the input side of the tuner 40 provides the tuner unit 44 with an RF signal through the antenna ANT through the main resonance coil L1, and at the same time, It is provided to a plurality of connected devices connected to a plurality of RF output terminals through the sub resonance coil.

도 2를 참조하면, 제1 서브 공진코일(L2)을 통해서 제1 RF출력단에 접속된 기기, 예를들면, 도 2에 도시한 바와같이 TV에 제공한다. 그리고, 제2 서브 공진코일(L3)을 통해서 제2 RF출력단에 접속된 기기, 예를들면, 도 2에 도시한 바와같이 VTR에 제공한다.Referring to FIG. 2, a device connected to a first RF output terminal through a first sub resonant coil L2, for example, is provided to a TV as shown in FIG. 2. A device connected to the second RF output terminal through the second sub resonant coil L3, for example, is provided to the VTR as shown in FIG.

이와같은 본 발며에 따른 멀티 루프쓰루 회로에 의하면, 하나의 투너를 통해 복수의 기기로 신호를 분배할 수 있게 되는데, 이와같은 신호분배시에도 신호손실이 종래와같이 24dB와 같은 크게 발생되지 않으며, 따라서 보다 작은 신호손실로보다 작은 기기로 신호분배를 할 수 있게 된다.According to the multi-loop through circuit according to the present invention, it is possible to distribute the signal to a plurality of devices through a single toner, even when the signal distribution, such signal loss does not occur as large as 24dB as in the prior art, This allows signal distribution to smaller devices with smaller signal losses.

상술한 바와같은 본 발명에 따르면, 하나의 회로로 멀티 루프쓰루 출력을 구현시킴으로서, 하나의 회로로 TV.VTR등과 같은 복수의 기기에 신호를 제공할 수 있으며, 또한 신호손실의 증가를 방지할 수 있도록 하는 특별한 효과가 있다.According to the present invention as described above, by implementing a multi-loop through output in one circuit, it is possible to provide a signal to a plurality of devices such as TV, VTR, etc. in one circuit, and also to prevent an increase in signal loss. Has a special effect.

이상의 설명은 본 발명의 일실시예에 대한 설명에 불과하며, 본 발명은 그 구성의 범위내에서 다양한 변경 및 개조가 가능하다.The above description is only a description of one embodiment of the present invention, the present invention is capable of various changes and modifications within the scope of the configuration.

Claims (2)

디지털 지상파 튜너에 내장되는 루프쓰루 회로에 있어서,In the loop-through circuit built into the digital terrestrial tuner, 안테나 커넥터와 튜너부의 입력단 사이에 접속되는 메인 공진코일;A main resonance coil connected between the antenna connector and the input end of the tuner unit; 상기 메인 공진코일로부터 설정간격으로 위치되어 복수의 RF출력단에 접속하는 복수의 서브 공진코일을 구비함을 특징으로 하는 튜너의 멀티 루프쓰루 회로.And a plurality of sub resonant coils positioned at predetermined intervals from the main resonant coil and connected to a plurality of RF output terminals. 디지털 지상파 튜너에 내장되는 루프쓰루 회로에 있어서,In the loop-through circuit built into the digital terrestrial tuner, 안테나 커넥터와 튜너부의 입력단 사이에 접속되는 메인 공진코일;A main resonance coil connected between the antenna connector and the input end of the tuner unit; 상기 메인 공진코일로부터 설정간격으로 위치되어 제1 RF출력단에 접속한 제1 서브 공진코일;A first sub resonance coil located at a predetermined interval from the main resonance coil and connected to a first RF output terminal; 상기 메인 공진코일로부터 설정간격으로 위치되어 제2 RF출력단에 접속한 제2 서브 공진코일; 을 구비함을 특징으로 하는 튜너의 멀티 루프쓰루 회로.A second sub resonance coil positioned at a predetermined interval from the main resonance coil and connected to a second RF output terminal; A multi-loop through circuit of a tuner, characterized in that it comprises a.
KR10-2001-0039420A 2001-07-03 2001-07-03 Multi loop through circuit of tuner KR100384462B1 (en)

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KR0125081Y1 (en) * 1994-12-15 1998-10-15 김광호 Audio/vedio input selecting circuit of tv
KR0166697B1 (en) * 1995-04-10 1999-03-20 김광호 Method for controlling image instrument
JP3969828B2 (en) * 1998-03-13 2007-09-05 三洋電機株式会社 RF converter output channel automatic setting device, video tuner device and VTR for television signal receiver

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