KR200143238Y1 - Catv signal dsitributing circuit - Google Patents

Catv signal dsitributing circuit Download PDF

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Publication number
KR200143238Y1
KR200143238Y1 KR2019960017432U KR19960017432U KR200143238Y1 KR 200143238 Y1 KR200143238 Y1 KR 200143238Y1 KR 2019960017432 U KR2019960017432 U KR 2019960017432U KR 19960017432 U KR19960017432 U KR 19960017432U KR 200143238 Y1 KR200143238 Y1 KR 200143238Y1
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South Korea
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signal
terminal
unit
cable
television
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KR2019960017432U
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Korean (ko)
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KR980005930U (en
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박성동
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이형도
삼성전기주식회사
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00Television systems
    • H04N7/10Adaptations for transmission by electrical cable
    • H04N7/102Circuits therefor, e.g. noise reducers, equalisers, amplifiers
    • H04N7/104Switchers or splitters
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B1/00Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06Receivers
    • H04B1/10Means associated with receiver for limiting or suppressing noise or interference
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/44Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/50Tuning indicators; Automatic tuning control

Abstract

본 고안은 케이블-텔레비젼의 신호분배회로에 관한 것으로, 특히 쌍방향 정보교환기능을 갖는 케이블-텔레비젼에서 송수신데이타간의 신호갑섭을 방지하도록 트랜스포머를 이용한 신호분배회로를 채택한 케이블-텔레비젼의 신호분배회로에 관한 것이다.The present invention relates to a signal distribution circuit of a cable-television, and more particularly, to a signal distribution circuit of a cable-television employing a signal distribution circuit using a transformer to prevent signal interference between transmission and reception data in a cable-television having a bidirectional information exchange function. will be.

본 고안의 회로는 케이블-텔레비젼의 안테나(ANT)단자를 통해서 입력되는 신호를 RF증폭부 또는 단말기로 제공하고, 상기 단말기의 정보신호를 안테나단자를 통해서 송출하는 쌍방향통신기능을 갖는 케이블-텔레비젼 시스템에 있어서, 상기 단말기의가입자신호 이외의 신호에 대한 배제특성이 35dB이상이며, 상기 단말기에 포함된 가입자신호송신부와 안테나단자간에 형성된 송신동조부; 상기 안테나단자를 통한 방송신호와 서비스신호를 분리하여 분배시키는 신호분배부; 상기 안테나단자를 통해서 수신된 서비스신호 이외의 신호에 대한 배제특성이 35dB이상이며, 상기 신호분배부와 단말기의 서비스신호수신부간에 형성된 수신동조부; 상기 서비스신호수신부와 임피던스를 매칭시키도록 신호분배부의 일단에 형성한 임피던스매칭부; 상기 신호분배부와 RF증폭부간에 설치된 고역통과필터를 구비한 것이다.The circuit of the present invention provides a signal inputted through an antenna (ANT) terminal of a cable-television to an RF amplifier or a terminal, and a cable-television system having a bidirectional communication function for transmitting the information signal of the terminal through an antenna terminal. A transmission tuning unit formed between a subscriber signal transmitter and an antenna terminal having an exclusion characteristic of a signal other than the subscriber signal of the terminal being 35 dB or more; A signal distribution unit that separates and distributes a broadcast signal and a service signal through the antenna terminal; A reception tuning unit having an exclusion characteristic for a signal other than the service signal received through the antenna terminal is 35 dB or more, and formed between the signal distribution unit and the service signal receiving unit of the terminal; An impedance matching unit formed at one end of the signal distribution unit to match the impedance with the service signal receiving unit; It is provided with a high pass filter provided between the signal distribution unit and the RF amplifier.

Description

케이블-텔레비젼의 신호분배회로Signal distribution circuit of cable television

본 고안은 케이블-텔레비젼의 신호분배회로에 관한 것으로, 특히 쌍방향 정보교환기능을 갖는 케이블-텔레비젼에서 송수신데이타간의 신호갑섭을 방지하도록 트랜스포머를 이용한 신호분배회로를 채택한 케이블-텔레비젼의 신호분배회로에 관한 것이다.The present invention relates to a signal distribution circuit of a cable-television, and more particularly, to a signal distribution circuit of a cable-television employing a signal distribution circuit using a transformer to prevent signal interference between transmission and reception data in a cable-television having a bidirectional information exchange function. will be.

일반적으로, 케이블-텔레비젼(CATV : 유료방송)방송은 케이블-텔레비젼방송국측에 설치된 대형의 호스트컴퓨터(HOST COMPUTER)와, 가입자측에 설치되는 단말기(TERMINAL)로 구성되는 정보교환시스템(Mutual Information Exchange System)을 통해서 가입자측으로부터 요청되는 정보에 대하여 케이블-텔레비젼방송국측에서 가입자측에게 정보를 제공할 뿐만 아니라, 가입가측에서 발생되는 각종 상황에 대한 데이타를 수집할 수 있다. 예를들면, 채널별 시청률조사, 가스.수도.전력.등의 사용량에 대한 도수검침, 방범.방재 등의 업무수행 등으로 가입자측에 정보서어비스를 제공할 수 있다.In general, cable-to-TV (CATV) broadcasting consists of a large host computer installed at the cable-TV broadcasting station and a terminal installed at the subscriber side (Mutual Information Exchange). Through the system, the cable TV station not only provides information to the subscriber, but also collects data on various situations occurring at the subscriber. For example, an information service may be provided to subscribers by performing audience rating surveys, meter reading on usage of gas, water, power, and the like, and crime and disaster prevention.

일반적인 기술에 관련되는 종래의 기술에 대한 구성은 제1도에 도시되어 있으며, 제1도를 참조하면, 케이블-텔레비젼 수신시스템의 튜너에 내장된 입력회로를 통해서 데이타를 송신하고 수신하는 단말기(10)에는 데이타송신을 담당하는 데이타송신부(12)와, 데이타수신을 담당하는 데이타수신부(14)가 포함되어 있으며, 상기 단말기(10)는 케이블-텔레비젼의 입력회로에 포함되어 있는 송수신동조부로 송수신신호를 분리하여 송수신한다.A configuration of a conventional technique related to the general technique is shown in FIG. 1, and referring to FIG. 1, a terminal 10 for transmitting and receiving data through an input circuit built in a tuner of a cable-TV receiving system. ) Includes a data transmitter 12 for data transmission, and a data receiver 14 for data reception, and the terminal 10 transmits and receives signals to a transmission / reception tuning unit included in an input circuit of a cable television. Send and receive separately.

그러나, 이와같은 종래기술에 대한 개선점 및 문제점은 종래의 동조회로에 의해서는 송수신 신호배제특성이 우수하지 못하여 상기 송수신 신호간에 갑섭현상이 발생하여 데이타송신 또는 데이타수신이 원활하게 이루어지지 못하고, 또한 이로 인하여 방송수신화질이 떨어지는 것이다.However, the improvement and problem with the conventional technology is that the transmission and reception signal rejection characteristics are not excellent by the conventional tuning circuit, so that interference occurs between the transmission and reception signals, and thus data transmission or data reception is not smoothly performed. Due to the broadcast receiving quality is to fall.

상기한 문제점을 해결하는 것이 본 고안이 달성하고자 하는 기술적인 과제이고, 이와같은 기술적인 과제를 달성하기 위한 기술적인 수단으로써, 본 고안의 회로는 케이블-텔레비젼의 안테나(ANT)단자를 통해서 입력되는 신호를 RF증폭부 또는 단말기로 제공하고, 상기 단말기의 정보신호를 안테나단자를 통해서 송출하는 쌍방향통신기능을 갖는 케이블-텔레비젼 시스템에 있어서, 상기 단말기의 가입자신호 이외의 신호에 대한 배제특성이 35dB이상이며, 상기 단말기에 포함된 가입자신호송신부와 안테나단자간에 형성된 송신동조부, 상기 안테나단자를 통한 방송신호와 서비스신호를 분리하여 분배시키는 신호분배부, 상기 안테나단자를 통해서 수신된 서비스신호 이외의 신호에 대한 배제특성이 35dB이상이며, 상기 신호분배부와 단말기의 서비스신호수신부간에 형성된 수신동조부, 상기 서비스신호수신부와 임피던스를 매칭시키도록 신호분배부의 일단에 형성한 임피던스매칭부, 상기 신호분배부와 RF증폭부간에 설치된 고역통과필터를 구비한다.Solving the above problems is a technical problem to be achieved by the present invention, and as a technical means for achieving such a technical problem, the circuit of the present invention is input through the antenna (ANT) terminal of the cable-TV In a cable-television system having a two-way communication function for providing a signal to an RF amplifier or a terminal and transmitting an information signal of the terminal through an antenna terminal, an exclusion characteristic for signals other than the subscriber signal of the terminal is 35 dB or more. A signal transmission unit formed between a subscriber signal transmitter and an antenna terminal included in the terminal, a signal distribution unit for separating and distributing a broadcast signal and a service signal through the antenna terminal, and a signal other than a service signal received through the antenna terminal The exclusion characteristic for is more than 35dB, the service signal of the signal distribution unit and the terminal And a number Phenom grandfather, a high-pass filter provided between the service signal reception and the impedance formed on the one end of the signal distribution matching unit to match the impedance of the signal distribution and the RF amplifying section formed between the bride.

제1도는 종래의 케이블-텔레비젼의 신호입력회로도이다.1 is a signal input circuit diagram of a conventional cable-TV.

제2도는 제1도에 도시된 케이블-텔레비젼의 신호입력회로에 의한 송수신 신호의 파형도이다.FIG. 2 is a waveform diagram of a transmission / reception signal by the signal input circuit of the cable television shown in FIG.

제3도는 본 고안에 따른 케이블-텔레비젼의 신호분배회로도이다.3 is a signal distribution circuit diagram of a cable-TV according to the present invention.

제4도는 제3도에 도시된 케이블-텔레비젼의 신호분배회로에 의한 송수신 신호파형도이다.4 is a signal waveform diagram of transmission and reception by the signal distribution circuit of the cable-TV shown in FIG.

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

5 : RF증폭부 10 : 단말기5: RF amplifier 10: terminal

12 : 가입자신호송신부 14 : 서비스신호수신부12: subscriber signal transmitter 14: service signal receiver

21 : 송신동조부 22 : 신호분배부21: Transmission tuning unit 22: Signal distribution unit

23 : 수신동조부 24 : 임피던스매칭부23: reception tuning unit 24: impedance matching unit

25 : 고역통과필터25: high pass filter

이하, 본 고안에 따른 케이블-텔레비젼의 신호분배회로의 바람직한 실시예를 첨부한 도면을 참조하여 설명한다.Hereinafter, with reference to the accompanying drawings a preferred embodiment of a signal distribution circuit of a cable-TV according to the present invention.

본 고안에 참조된 도면에서 실질적으로 동일한 구성과 기능을 가진 구성요소들은 동일한 부호를 사용할 것이다.In the drawings referred to in the present invention, components having substantially the same configuration and function will use the same reference numerals.

제3도는 본 고안에 따른 케이블-텔레비젼의 신호분배회로도로서, 제3도를 참조하면, 본 고안의 케이블-텔레비젼의 신호분배회로는 케이블-텔레비젼의 안테나(ANT)단자를 통해서 입력되는 신호를 RF증폭부(5) 또는 단말기(10)로 제공하고, 상기 단말기(10)의 정보신호를 안테나(ANT)단자를 통해서 송출하는 쌍방향통신기능을 갖는 케이블-텔레비젼 시스템에 있어서, 상기 단말기(10)의 가입자신호 이외의 신호에 대한 배제특성이 35dB이상이며, 상기 단말기(10)에 포함된 가입자신호송신부(12)와 안테나(ANT)단자간에 형성된 송신동조부(21)와, 상기 안테나(ANT)단자를 통한 방송신호와 서비스신호를 분리하여 분배시키는 신호분배부(22)와, 상기 안테나(ANT)단자를 통해서 수신된 서비스신호 이외의 신호에 대한 배제특성이 35dB이상이며, 상기 신호분배부와 단말기(10)의 서비스신호수신부(14)간에 형성된 수신동조부(23)와, 상기 서비스신호수신부와 임피던스를 매칭시키도록 신호분배부의 일단에 형성한 임피던스매칭부(24)와, 상기 신호분배부(22)와 RF증폭부간에 설치된 고역통과필터(25)를 구성한다.3 is a signal distribution circuit diagram of the cable-TV according to the present invention. Referring to FIG. 3, the signal distribution circuit of the cable-TV of the present invention is a signal input through the antenna (ANT) terminal of the cable-TV. In the cable-television system which provides the amplification unit 5 or the terminal 10 and transmits the information signal of the terminal 10 through the antenna ANT terminal, The exclusion characteristic for signals other than the subscriber signal is 35 dB or more, and the transmission tuning unit 21 formed between the subscriber signal transmitter 12 included in the terminal 10 and the antenna ANT terminal, and the antenna ANT terminal. The signal distribution unit 22 for separating and distributing the broadcast signal and the service signal through the signal, and the exclusion characteristic for signals other than the service signal received through the antenna (ANT) terminal is 35dB or more, and the signal distribution unit and the terminal 10 of A reception tuner 23 formed between the service signal receiver 14, an impedance matching unit 24 formed at one end of the signal distributor so as to match the impedance with the service signal receiver, and the signal distributor 22 and the RF. The high pass filter 25 provided between the amplification parts is comprised.

상기 신호분배부(22)는 방송신호를 RF증폭부(5)측으로 분배시키고, 서비스신호를 단말기(10)측으로 분배시키도록 소정의 신호에 대한 결합도를 가지는 코일로 이루어진 트랜스포머를 구성한다.The signal distribution unit 22 constitutes a transformer made of a coil having a coupling degree to a predetermined signal so as to distribute the broadcast signal to the RF amplifier 5 side and to distribute the service signal to the terminal 10 side.

제4도는 제3도에 도시된 케이블-텔레비젼의 신호분배회로에 의한 송수신 신호파형도이다.4 is a signal waveform diagram of transmission and reception by the signal distribution circuit of the cable-TV shown in FIG.

여기서, 도면중 미설명부호인 L1은 낙뢰방지용 코일이고, C0, C2는 결합콘덴서이다.Here, in the drawing, reference numeral L1 denotes a lightning protection coil, and C0 and C2 denote coupling capacitors.

이와같이 구성된 본 고안의 회로에 따른 동작을 첨부도면에 의거하여 하기에 상세히 설명한다.Operation according to the circuit of the present invention configured as described above will be described in detail below based on the accompanying drawings.

제3도 및 제4도를 참조하여 본 고안을 설명하면, 먼저 단말기(10)의 가입자신호송신부(12)에서 출력되는 가입자의 선택에 의한 가입자신호는 송신동조부(21)를 통해서 안테나단자로 송출되는데, 상기 송신동조부(21)에서는 가입자신호에 동조시키는데, 이는 가입자신호에 대해서는 선택도가 좋고, 그외 신호에 대해서는 충분한 배제 특성을 갖도록 구성되어 있다. 예를들어 29.7MHz인 가입자신호를 제4도에 도시한 바와같이 동조선택함과 동시에 그 일측 신호간섭을 일으킬 수 있는 부분을 트랩시켜서 간섭현상을 배제시키고 있다.Referring to FIG. 3 and FIG. 4, first, the subscriber signal by the subscriber's selection, which is output from the subscriber signal transmitter 12 of the terminal 10, is transmitted to the antenna terminal through the transmission tuning unit 21. FIG. The transmission tuner 21 tunes to the subscriber signal, which is configured to have good selectivity for the subscriber signal and sufficient exclusion characteristics for other signals. For example, as shown in FIG. 4, the subscriber signal of 29.7 MHz is tuned and trapped at the same time, which traps one side signal interference, thereby eliminating interference.

또한, 상기 안테나단자를 통해서 수신되는 신호중 방송신호는 신호분배부(22)를 통한 다음에 고역통과필터(25)를 거쳐 RF증폭부(5)로 제공되는 한편, 상기 수신신호중 서비스신호는 상기 트랜스포머로 이루어진 신호분배부(22)에서 높은 결합도에 의해 무손실로 유기되고, 이 유기된 서비스신호는 수신동조부(23)에 의해서 동조된 다음에 단말기(10)의 서비스신호수신부(14)로 제공되는 것이다. 상기 수신동조부(23)에서도 제4도에 도시한 바와같이 간섭을 일으킬 수 있는 부분에 트랩을 형성시켜서 신호간섭을 배제시키고 있는 것이다.In addition, the broadcast signal among the signals received through the antenna terminal is provided to the RF amplifier 5 through the signal distribution unit 22 and then through the high pass filter 25, while the service signal of the received signal is the transformer Loss-free is induced by a high coupling degree in the signal distribution unit 22, which is tuned by the reception tuning unit 23, and then provided to the service signal receiving unit 14 of the terminal 10. Will be. In the reception tuning unit 23, as shown in FIG. 4, a trap is formed at a portion that may cause interference, thereby eliminating signal interference.

상기, 신호분배부(22)는 트랜스포머를 사용하는 것으로, 상기 서비스신호에 대해서 결합도가 나타나도록 하여 방송신호는 RF증폭부로 통과시키는 한편, 서비스신호는 높은 결합도에 의해서 유기되어 단말기로 제공되는 것이다.The signal distribution unit 22 uses a transformer. The signal distribution unit 22 provides a coupling degree with respect to the service signal so that the broadcast signal passes through the RF amplifier, while the service signal is induced by the high coupling degree and provided to the terminal. will be.

상술한 바와같은 본 고안에 따르면, 트랜스포머(transformer)를 이용한 신호분배회로를 채택함으로서, 쌍방향 정보교환기능을 갖는 케이블-텔레비젼(cable-television)에서 송수신데이타간의 신호갑섭을 방지하여 쌍방향통신기능을 갖는 케이블-텔레비젼에서 양호한 방송시청이 가능하도록 하는 특별한 효과가 있는 것이다.According to the present invention as described above, by adopting a signal distribution circuit using a transformer (transformer), in the cable-television having a bidirectional information exchange function (cable-television) to prevent signal interference between the transmission and reception data having a bidirectional communication function There is a special effect of enabling good broadcast viewing on cable television.

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

본 고안의 목적은 트랜스포머(transformer)를 이용한 신호분배회로를 채택함으로서, 쌍방향 정보교환기능을 갖는 케이블-텔레비젼(cable-television)에서 송수신데이타간의 신호갑섭을 방지하여 쌍방향통신기능을 갖는 케이블-텔레비젼에서도 양호한 방송시청이 가능하도록 하는 케이블-텔레비젼의 신호분배회로를 제공하는데 있다.The object of the present invention is to adopt a signal distribution circuit using a transformer, thereby preventing signal interference between transmit and receive data in a cable-television having a bidirectional information exchange function, thereby enabling a cable-television having a bidirectional communication function. An object of the present invention is to provide a signal distribution circuit of a cable-television which enables good broadcasting viewing.

Claims (2)

케이블-텔레비젼의 안테나(ANT)단자를 통해서 입력되는 신호를 RF증폭부(5) 또는 단말기(10)로 제공하고, 상기 단말기(10)의 정보신호를 안테나(ANT)단자를 통해서 송출하는 쌍방향통신기능을 갖는 케이블-텔레비젼 시스템에 있어서, 상기 단말기(10)의 가입자신호 이외의 신호에 대한 배제특성이 35dB이상이며, 상기 단말기(10)에 포함된 가입자신호송신부(12)와 안테나(ANT)단자간에 형성된 송신동조부(21), 상기 안테나(ANT)단자를 통한 방송신호와 서비스신호를 분리하여 분배시키는 신호분배부(22), 상기 안테나(ANT)단자를 통해서 수신된 서비스신호 이외의 신호에 대한 배제특성이 35dB이상이며, 상기 신호분배부와 단말기(10)의 서비스신호수신부(14) 간에 형성된 수신동조부(23), 상기 서비스신호수신부와 임피던스를 매칭시키도록 신호분배부의 일단에 형성한 임피던스매칭부(24), 상기 신호분배부(22)와 RF증폭부간에 설치된 고역통과필터(25)를 구비함을 특징으로 하는 케이블-텔레비젼의 신호분배회로.Two-way communication for providing a signal input through the antenna (ANT) terminal of the cable-television to the RF amplifier 5 or the terminal 10, and transmits the information signal of the terminal 10 through the antenna (ANT) terminal In the cable-television system having a function, an exclusion characteristic for signals other than the subscriber signal of the terminal 10 is 35 dB or more, and the subscriber signal transmitter 12 and the antenna ANT terminal included in the terminal 10 are included. The transmission tuning unit 21 formed between the signal transmission unit 21, the signal distribution unit 22 for separating and distributing the broadcast signal and the service signal through the antenna ANT terminal, and a signal other than the service signal received through the antenna ANT terminal. The exclusion characteristic is 35 dB or more, and is formed at one end of the signal receiving unit 23 so as to match the impedance with the service signal receiving unit 23 formed between the signal distribution unit and the service signal receiving unit 14 of the terminal 10. being And a high pass filter (25) provided between the impedance matching unit (24) and the signal distribution unit (22) and the RF amplifier unit. 제1항에 있어서, 상기 신호분배부(22)는 방송신호를 RF증폭부(5)측으로 분배시키고, 서비스신호를 단말기(10)측으로 분배시키도록 소정의 신호에 대한 결합도를 가지는 코일로 이루어진 트랜스포머로 구성함을 특징으로 하는 케이블-텔레비젼의 신호분배회로.According to claim 1, wherein the signal distribution unit 22 is made of a coil having a coupling degree to a predetermined signal to distribute the broadcast signal to the RF amplifier 5 side, the service signal to the terminal 10 side Cable-TV signal distribution circuit comprising a transformer.
KR2019960017432U 1996-06-25 1996-06-25 Catv signal dsitributing circuit KR200143238Y1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000007874A (en) * 1998-07-08 2000-02-07 이형도 Tuner having both upstream filtering function and signal division function

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000007874A (en) * 1998-07-08 2000-02-07 이형도 Tuner having both upstream filtering function and signal division function

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