KR970068611A

KR970068611A - Multiple transmitting and receiving device for closed circuit television

Info

Publication number: KR970068611A
Application number: KR1019970031632A
Authority: KR
Inventors: 박이규
Original assignee: 박이규
Priority date: 1997-07-09
Filing date: 1997-07-09
Publication date: 1997-10-13
Also published as: KR100227413B1

Abstract

본 발명은 폐쇄회로 텔레비젼(CCTV)의 다중 송수신장치에 관한 것으로서, 피사체를 촬상하여 영상신호를 출력하는 다수의 감시용카메라(CA1~CAn); 상기 각 감시용카메라의 상하좌우회전, 피사체의 확대 및 축소, 거리의 원근을 조절하기 위한 각 감시용카메라에 대응하는 수의 제어장치(Rx1~Rxn); 상기 감시용카메라와 상기 제어장치를 동시에 연결함으로서 상기 감시용카메라의 영상신호는 송신하고, 제어신호를 상기 제어장치로 인가하는 각 감시용카메라에 대응하는 수의 다중 송수신기(MR1~MRn); 상기 각 다중 송수신기(MR1~MRn)를 직렬로 연결하는 하나의 동축케이블; 상기 하나의 동축케이블과 연결되는 동시에 상기의 제어신호를 출력하는 조작기(4) 및 상기 다중 송수신기 및 제어 장치에 전원을 공급하는 전원공급기(5)와 연결되어, 상기 동축케이블을 통하여 상기 다중 송수신기로부터 송신되는 영상신호는 수신받고, 상기 조작기(5) 및 전원공급기(5)로부터 입력되는 제어신호 및 전원은 상기 다중 송수신기로 송신하는 다중 송수신 중앙기(MT); 그리고, 상기 다중 송수신 중앙기(MT)로부터 영상신호를 인가받아 영상신호를 디스플레이시키는 모니터(1)가 구비되어, 감시용카메라의 수에 관계없이 한 가닥의 동축케이블을 이용하여 영상신호, 제어신호, 전원등을 전송할 수 있는 고안이다.The present invention relates to a multiplex transmission and reception apparatus of a closed circuit television (CCTV), comprising: a plurality of surveillance cameras CA1 to CAn for photographing a subject and outputting a video signal; A number of control devices (Rx1 to Rxn) corresponding to each surveillance camera for adjusting the up, down, left, right, right, left, and right of the subject, and the perspective of the distance; By connecting the surveillance camera and the control device at the same time, the video signal of the surveillance camera is transmitted, and the number of multiple transceivers MR1 to MRn corresponding to each surveillance camera that applies a control signal to the control device; One coaxial cable connecting the multiple transceivers MR1 to MRn in series; It is connected to the manipulator 4 which is connected to said one coaxial cable and outputs the said control signal, and the power supply 5 which supplies power to the said multiple transceiver and a control apparatus, and from the said multiple transceiver via the said coaxial cable. A multiple transmission / reception center (MT) for receiving a transmitted video signal and transmitting control signals and power input from the manipulator 5 and the power supply 5 to the multiple transceiver; In addition, a monitor 1 for receiving a video signal from the multiplexing transmission / reception center MT and displaying the video signal is provided, and the video signal and the control signal using one coaxial cable regardless of the number of surveillance cameras. It is devised to transmit power.

Description

Multiple transmitting and receiving device for closed circuit television

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

도 1은 종래의 폐쇄회로 텔레비젼의 다중 송수신장치를 도시한 블록도, 도 2는 종래의 또 다른 폐쇄회로 텔레비젼의 다중 송수신장치(특허 제 96-2481호)를 도시한 블록도, 도 3은 본 발명에 따른 폐쇄회로 텔레비젼의 다중 송수신장치를 도시한 블록도, 도 4는 본 발명에 따른 다중 송수신기를 도시한 블록도, 도 5는 본 발명에 따른 다중 송수신 중앙기를 도시한 블록도.1 is a block diagram showing a multiple transceiver of a conventional closed circuit television, FIG. 2 is a block diagram showing a multiple transceiver of a conventional closed circuit television (Patent No. 96-2481), and FIG. Fig. 4 is a block diagram showing a multiple transceiver of a closed circuit television according to the invention, Fig. 4 is a block diagram showing a multiple transceiver according to the present invention, and Fig. 5 is a block diagram showing a multiple transceiver center according to the present invention.

Claims

Multiple transmission / reception of a closed-circuit television which transmits a video signal of the monitoring cameras CA1 to CAn to the monitor 1 and transmits a control signal and power to control the position and perspective of the monitoring cameras CA1 to CAn. An apparatus comprising: a plurality of surveillance cameras CA1 to CAn for photographing a subject and outputting a video signal; Number of control devices (Rx1 to Rxn) corresponding to each of the monitoring cameras CA1 to CAn for adjusting the up, down, left and right rotation of the monitoring cameras CA1 to CAn, enlargement and reduction of the subject, and perspective of the distance; By connecting the monitoring cameras CA1 to CAn and the control devices Rx1 to Rxn at the same time, the video signals of the monitoring cameras CA1 to CAn are transmitted and each monitoring device for applying a control signal to the control device. Multiple transceivers MR1 to MRn corresponding to cameras CA1 to CAn; One coaxial cable connecting the multiple transceivers MR1 to MRn in series; Connected to the one coaxial cable and simultaneously connected to a manipulator 4 for outputting the control signal and a power supply 5 for supplying power to the multiple transceivers MR1 to MRn and the control devices Rx1 to Rxn. Image signals transmitted from the multiple transceivers MR1 to MRn are received through the coaxial cable, and control signals and power input from the manipulator 5 and the power supply 5 are transferred to the multiple transceivers MR1 to MRn. A multiple transmit / receive center (MT) for transmitting; And a monitor (1) receiving a video signal from the multiplexing transmission / reception center (MT) and displaying the video signal.

The first and second amplifiers (102) of claim 1, wherein the multiple transceivers (MR1 to MRn) receive video inputs from the surveillance cameras CA1 to CAn and amplify them to appropriate values. The first mixer 104 for mixing and modulating the video signal amplified by the oscillation signal output from the first oscillator 108, and cleans the RF signal modulated by the first mixer 104 to clean only a predetermined frequency band The first filter 106, the second amplifier 110 for amplifying the RF signal passed through the first filter 106, and the RF amplifier signal passed through the second amplifier 110 to filter only a predetermined frequency band again The second mixer 112, the second mixer 116, and the second mixer (116) and the second mixer (RF mixer) in which RF signals of different frequency bands sent from another multiple transceiver are mixed. A third amplifier for amplifying the RF signal output through 116) back to an appropriate value; Mixing the RF amplifier signal output from the third amplifier 118 with the third filter 120 for filtering only a predetermined frequency band again and another multiple transceivers MR1 to MRn passing through the third filter 120. Filtering a predetermined band of the control signal value separated from the forward combiner 130 and the forward combiner 130 for separating the video signal and the control signal transmitted from the rear-end or multiple transmit / receive MT, power, etc. The first band filter 202, a data amplifier 204 for amplifying a control signal passed through the first band filter 202, and a control signal amplified by the data amplifier 204 to prevent other signals from passing therethrough. The RF demodulator 208 recovers the original control signal from the RF value (e.g., RS-485, RS-422, Current Loop Signal, etc.), and analyzes the control signal output from the RF demodulator 208. A decoder 210 for applying a signal to Rx1 to Rxn; A second band filter 206 for passing only a control signal of a frequency band to other control devices Rx1 to Rxn among the control signals passed through the device 204, and a multiple transceiver of the other end with the second band filter 206 A first reverse coupler 114 for coupling an RF signal applied from MR1 to MRn, and transmits an image signal applied from the surveillance cameras CA1 to CAn to a multiplexing transmission / reception center MT; Multi-transmitter and receiver of a closed-circuit television, characterized in that receiving the control signal and power applied from the multi-transmitter.

According to claim 1, wherein the multiplexing transmission and reception center (MT), the power supply for applying AC power to the coaxial cable (5), the third band filter 300 to prevent the AC power flowing into the main circuit, A second reverse coupler 302 for combining the image signal passed through the third band filter 300 and a control signal having a different direction, and a fourth for appropriately amplifying the RF signal passed through the second reverse coupler 302. The signals distributed by the high frequency divider 306 and the high frequency divider 306 that classify the RF signals passing through the high frequency amplifier 304, the fourth high frequency combiner 304 for each channel, are not introduced to the channel. The video signal passing through the third filter 120 is demodulated to the original signal by synthesizing with the third filter 120 which filters the third filter 120, the signal passing through the third filter 120 and the third oscillator which makes a specific period. To the third mixer 310. The video amplifier 314 and the surveillance cameras CA1 to CAn for amplifying the original video signal completely demodulated by the third mixer 310 to display the image on the monitor 10 by amplifying the original video signal to be observed as a clean image. An encoder 400 for encoding a value of a control signal output from the manipulator 4, an RF modulator 402 for converting a control signal encoded by the encoder 400 into an RF signal, and the RF modulator 402. The fourth band filter 404 for transmitting the signal output from the second reverse coupler 302 and at the same time block other signals that may be introduced from the second reverse coupler 302 not to flow toward the RF modulator 402. And a video signal received from the multiple transceivers MR1 to MRn and transmitted to the monitor 1, and control signals and power are received from the manipulator 4 and the power supply 5. Song at (MR1-MRn) Multiple transceiver of a closed circuit television, characterized in that for receiving.

※ Note: The disclosure is based on the initial application.