KR940007015Y1 - Catv system - Google Patents

Catv system Download PDF

Info

Publication number
KR940007015Y1
KR940007015Y1 KR2019880019145U KR880019145U KR940007015Y1 KR 940007015 Y1 KR940007015 Y1 KR 940007015Y1 KR 2019880019145 U KR2019880019145 U KR 2019880019145U KR 880019145 U KR880019145 U KR 880019145U KR 940007015 Y1 KR940007015 Y1 KR 940007015Y1
Authority
KR
South Korea
Prior art keywords
channel
signal
tuner
voice
saw filter
Prior art date
Application number
KR2019880019145U
Other languages
Korean (ko)
Other versions
KR900011142U (en
Inventor
강관석
Original Assignee
삼성전기 주식회사
서주인
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 삼성전기 주식회사, 서주인 filed Critical 삼성전기 주식회사
Priority to KR2019880019145U priority Critical patent/KR940007015Y1/en
Publication of KR900011142U publication Critical patent/KR900011142U/en
Application granted granted Critical
Publication of KR940007015Y1 publication Critical patent/KR940007015Y1/en

Links

Classifications

    • 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
    • H04N5/60—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals
    • H04N5/607—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals for more than one sound signal, e.g. stereo, multilanguages
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/46—Filters
    • H03H9/64—Filters using surface acoustic waves
    • H03H9/6406—Filters characterised by a particular frequency characteristic
    • 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
    • H04N7/00—Television systems
    • H04N7/10—Adaptations for transmission by electrical cable
    • H04N7/102—Circuits therefor, e.g. noise reducers, equalisers, amplifiers

Abstract

내용 없음.No content.

Description

음성다중 유선TV 시스템Voice multi cable TV system

제1도는 본 고안의 음성 다중 유선 TV 시스팀의 블록 다이어그램.1 is a block diagram of a voice multi-wired TV system of the present invention.

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

1 : RF튜너 2 : 채널 쏘(SAW) 필터1: RF Tuner 2: Channel SAW Filter

3 : A/V신호검출기 4 : 스테레오 모듈3: A / V signal detector 4: Stereo module

5 : RF 모듈레이터5: RF modulator

본 고안은 유선 TV 시스팀에 관한 것으로, 특히 채널 쏘(SAW) 필터를 이용한 음성 다중 유선 TV 시스팀에 관한 것이다.The present invention relates to a cable TV system, and more particularly, to a voice multiple cable TV system using a channel saw (SAW) filter.

유선 TV 시스팀에 있어서, 종래의 컨버터는 IF 쏘필터를 이용한 모노 방송 수신용이 주종을 이루었기 때문에 방송국 측에서 음성다중 방송을 하더라도 수신자측에서는 모노 방송으로 밖에 수신할 수가 없었다.In the cable TV system, the conventional converter is mainly used for receiving a mono broadcast using an IF saw filter. Even though the voice broadcasting is performed on the broadcasting station side, the receiver can only receive the mono broadcasting on the receiver side.

특히, 근래의 방송은 대부분이 음성 다중 방송이므로 음성 다중 방송 수신이 가능한 컨버터의 수요가 급증함에 따타 IF튜너 타입의 음성 다중 방송 수신용 컨버터가 출현하게 되었다. 그러나, 이러한 IF 튜너 타입의 음성 다중 방송 수신용 컨버터에는 RF를 IF로 변환하기 위한 모듈등이 필요하게 되므로 그 구성이 복잡하게 되는 문제가 있었다.In particular, in recent years, since most broadcasts are voice multicast, the demand for a converter capable of receiving voice multicast has increased, and therefore, an IF tuner type converter for voice multicast reception has emerged. However, such an IF tuner type voice multi-broadcast reception converter requires a module for converting RF to IF, which has a problem that the configuration becomes complicated.

본 고안은 이와같은 문제점을 해결하기 위한 것으로, RF튜너에서 선택된 일정한 채널만이 출력하는 RF대역 통과 필터인 채널 쏘필터를 거쳐 A/V 신호검출기로 출력되게 하고, 영상신호는 해당 채널 주파수에 맞추어 검출하여 RF 모듈레이터로 출력되게 하여, 기존의 볼륨 타입에 적용하기 적합한 음성 다중 유선 TV 시스팀을 제공하는데 있다.The present invention is to solve this problem, it is output to the A / V signal detector through a channel saw filter, which is an RF bandpass filter that outputs only a certain channel selected from the RF tuner, and the image signal is adjusted to the corresponding channel frequency The present invention provides a voice multiple wired TV system suitable for application to an existing volume type by being detected and output to an RF modulator.

이하 첨부한 도면에 따라 본 고안을 설명하면 다음과 같다.Hereinafter, the present invention according to the accompanying drawings.

제1도에 도시하고 있는 바와같이, RF 입력신호(RFin)가 RF튜너(1)를 통하여 RF대역 통과필터인 채널 쏘필터(2)로 입력되게 구성하고, 상기 채널 쏘필터(2)의 출력은 A/V 신호 검출기(3)로 입력되게 구성하고, 상기 A/V 신호 검출기(3)의 영상 신호(Vi)는 RF 모듈레이터(5)에 직접 입력되게 하고, 또한, 음성 신호(Ai)는 스테레오 모듈(4)을 통하여 상기 RF 모듈레이터(5)로 입력되게 연결 구성한다.As shown in FIG. 1, the RF input signal RFin is configured to be input to the channel saw filter 2 which is an RF band pass filter through the RF tuner 1, and outputs the channel saw filter 2. Is configured to be input to the A / V signal detector 3, and the video signal Vi of the A / V signal detector 3 is directly input to the RF modulator 5, and the audio signal Ai is It is configured to be connected to the RF modulator 5 through the stereo module (4).

이와같이 구성된 본 고안의 작용 및 효과를 상세히 설명하면 다음과 같다.Referring to the operation and effects of the present invention configured as described above in detail.

제1도에서, RF 튜너(1)에서는 RF 입력신호(RFin)를 받아 일정한 채널을 선택하여 출력하게 된다.In FIG. 1, the RF tuner 1 receives an RF input signal RFin and selects and outputs a predetermined channel.

선택된 채널의 주파수는 해당 채널의 대역폭을 가지는 채널 쏘필터(2)를 거쳐 A/V 신호 검출기(3)로 출력된다.The frequency of the selected channel is output to the A / V signal detector 3 via the channel saw filter 2 having the bandwidth of the corresponding channel.

A/V 신호검출기(3)에서는 입력된 RF 신호에서 영상신호(Vi)를 검출하여 직접 RF 모듈레이터(5)로 출력하게 된다.The A / V signal detector 3 detects an image signal Vi from the input RF signal and outputs the image signal Vi directly to the RF modulator 5.

또한, 상기 A/V 신호검출기(3)에서는 입력된 RF 신호에서 음성 신호(Ai)를 검출하여 스테레오 모듈(4)을 통하여 RF모듈레이터(5)로 출력되게 한다.In addition, the A / V signal detector 3 detects the voice signal Ai from the input RF signal and outputs the voice signal Ai to the RF modulator 5 through the stereo module 4.

상기 스테레오 모듈(4)에는 기존의 볼륨 조절 회로를 내장하는 것으로 음량 조절이 가능하게 된다.The stereo module 4 is equipped with a conventional volume control circuit to enable volume control.

이상에서 설명한 바와같은 본 고안은 기존의 컨버터에서 음성다중 방송수신을 위한 IF쏘필터 대신에 RF 대약 통과필터인 채널 쏘필터를 사용하게 되므로 RF를 IF로 변환시키기 위한 별도의 IF 모듈이 필요하지 않게 됨에 따라 음성 다중 유선 TV시스팀의 구성이 간소화되는 효과가 나타나게 된다.As described above, the present invention uses a channel saw filter, which is an RF pass-through filter, instead of an IF saw filter for voice multiple broadcast reception in a conventional converter, so that a separate IF module for converting RF to IF is not required. As a result, the configuration of the voice multiple wired TV system is simplified.

특히, RF튜너를 사용하므로 디코더의 사용이 가능하게 되며 사용자의 임의 조작에 따라 모노 방송 또는 음성다중 방송의 선택 청취가 가능하게 된다.In particular, the use of an RF tuner enables the use of a decoder and enables selective listening of mono broadcasting or voice multiple broadcasting according to a user's arbitrary operation.

또한, 본 고안의 시스팀은 유선 방송국측의 헤드엔드에도 적용할 수가 있게 된다.In addition, the system of the present invention can be applied to the head end of the cable broadcasting station.

Claims (1)

유선 TV 시스템에 있어서, RF 입력신호에 대해 일정한 채널을 선택하기 위한 RF튜너(1), 상기 RF 튜너(1)의 선국 채널 주파수가 해당 선국 채널 주파수 대역으로 조정하기 위한 채널 쏘필터(2), 상기 채널 쏘필터(2)로부터 선택된 해당 선국채널 주파수 대역에서 영상 및 음성신호를 선택하기 위한 A/V 신호 검출기(3)와, 상기 A/V 신호 검출기(3)의 음성신호(Ai)는 음향 조절이 가능한 스테레오모듈(4)을 통해 수신하고, 영상 신호(Vi)는 직접 수신하여 RF변조하기 위한 상기 RF모듈레이터(5)를 포함하는 것을 특징으로 하는 음성 다중 유선 TV 시스팀.In a cable TV system, an RF tuner (1) for selecting a constant channel for an RF input signal, a channel saw filter (2) for adjusting the channel channel frequency of the RF tuner (1) to the channel channel frequency band corresponding thereto, The A / V signal detector 3 for selecting video and audio signals in the corresponding channel channel frequency band selected from the channel saw filter 2, and the audio signal Ai of the A / V signal detector 3 are sound Receiving via an adjustable stereo module (4), the video signal (Vi) is directly received, characterized in that it comprises the RF modulator (5) for RF modulation.
KR2019880019145U 1988-11-26 1988-11-26 Catv system KR940007015Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019880019145U KR940007015Y1 (en) 1988-11-26 1988-11-26 Catv system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019880019145U KR940007015Y1 (en) 1988-11-26 1988-11-26 Catv system

Publications (2)

Publication Number Publication Date
KR900011142U KR900011142U (en) 1990-06-04
KR940007015Y1 true KR940007015Y1 (en) 1994-10-07

Family

ID=19281606

Family Applications (1)

Application Number Title Priority Date Filing Date
KR2019880019145U KR940007015Y1 (en) 1988-11-26 1988-11-26 Catv system

Country Status (1)

Country Link
KR (1) KR940007015Y1 (en)

Also Published As

Publication number Publication date
KR900011142U (en) 1990-06-04

Similar Documents

Publication Publication Date Title
JP3360399B2 (en) Digital audio broadcasting receiver
US4302837A (en) FM Multiplex system for selectively delaying one of two audio signals
KR0166748B1 (en) Radio frequency modulation apparatus equipped with multi-sound broadcasting function
KR940007015Y1 (en) Catv system
KR200177493Y1 (en) Switching apparatus of vcr
KR20000002038A (en) Audio signal processing device for both digital and analog broadcast
KR890003048B1 (en) Multi-audio converter system
JP2848645B2 (en) Audio multiplex signal switching device
JPH0369461B2 (en)
JPS6241469Y2 (en)
KR980013296A (en) Wireless listening system for Television
JPS6133748Y2 (en)
KR0133969Y1 (en) Multi-sound circuit of multi-channel television system
JPH0356492B2 (en)
KR19980018127U (en) Audio wireless speaker device
KR970009310A (en) Automatic conversion of audio output when receiving stereo broadcasting from TV
JPS61117932A (en) Fm stereo broadcast system in catv
KR20010057157A (en) Audio receiving apparatus for tvcr and control method thereof
KR19990034047A (en) How to automatically switch the voice mode on a TV
JPH06165077A (en) Voice signal switching device
JPS61184916A (en) Receiver
KR20000045179A (en) Multi voice audio box
KR19990065472A (en) Song accompaniment video recording and reproducing apparatus for tuners
JPH03211980A (en) Two-system sound multiplex reception circuit
JPS5930381A (en) Sound circuit of television receiver

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
REGI Registration of establishment
LAPS Lapse due to unpaid annual fee