WO2014073714A1 - Broadcast signal optical transport system - Google Patents

Broadcast signal optical transport system Download PDF

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Publication number
WO2014073714A1
WO2014073714A1 PCT/KR2012/009263 KR2012009263W WO2014073714A1 WO 2014073714 A1 WO2014073714 A1 WO 2014073714A1 KR 2012009263 W KR2012009263 W KR 2012009263W WO 2014073714 A1 WO2014073714 A1 WO 2014073714A1
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WO
WIPO (PCT)
Prior art keywords
optical
signal
signal input
unit
photoelectric conversion
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Application number
PCT/KR2012/009263
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French (fr)
Korean (ko)
Inventor
조진기
이창희
송태진
Original Assignee
주식회사 오티콤
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Priority to PCT/KR2012/009263 priority Critical patent/WO2014073714A1/en
Publication of WO2014073714A1 publication Critical patent/WO2014073714A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/65—Arrangements characterised by transmission systems for broadcast
    • H04H20/69—Optical systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/02—Arrangements for relaying broadcast information
    • H04H20/04—Arrangements for relaying broadcast information from field pickup units [FPU]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
    • H04H60/02—Arrangements for generating broadcast information; Arrangements for generating broadcast-related information with a direct linking to broadcast information or to broadcast space-time; Arrangements for simultaneous generation of broadcast information and broadcast-related information
    • H04H60/04—Studio equipment; Interconnection of studios
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
    • H04N7/181—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a plurality of remote sources
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/22—Adaptations for optical transmission
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0221—Power control, e.g. to keep the total optical power constant

Definitions

  • the present invention relates to a broadcast signal optical transmission device for transmitting a broadcast signal of high-definition relay broadcasting such as full HD.
  • FIG. 1 is a diagram schematically illustrating a relay site for broadcasting a sports game.
  • the various broadcast sites include a plurality of television cameras for obtaining image signals and audio signals by directly photographing a scene, and an announcer and a commentator.
  • Remote device including a relay seat that relays and explains the scene situation while watching the site, and monitors and monitors the video and audio taken by the television camera and relay status from the relay seat, for example, sitting in a VAN. It is composed of a center device, and, in addition to the relay seat, for example, in the case of a sporting event, an interview with a player or a manager in a locker room, etc., is performed. Multiplexed and transmitted by wire or wireless to the broadcast station.
  • PBTS is collected and transmitted.
  • Patent Literature 1 There is a technique of Patent Literature 1 filed by the present applicant for such a portable optical transmission device, which is in an unpublished state.
  • Patent Document 1 Patent Application No. 2011-67759
  • the present invention has been made in view of the above problems, and by connecting a remote device and a remote device with each other and a remote device and a center device with each other in a network, the transmission of a conventional one-to-one structure as well as one-to-many
  • the present invention also provides an optical signal transmission apparatus capable of ADD / DROP, which can transmit and transmit and freely select and change a transmission path through which a broadcast signal (optical signal) is transmitted from each node of the network to a plurality of nodes.
  • ADD / DROP optical signal transmission apparatus capable of ADD / DROP, which can transmit and transmit and freely select and change a transmission path through which a broadcast signal (optical signal) is transmitted from each node of the network to a plurality of nodes.
  • the broadcast signal optical transmission device of the present invention for achieving the above object is an optical transmission device having an ADD / DROP function of the broadcast signal, the broadcast signal input and output unit for inputting and outputting video and audio signals taken by one or more cameras, And a communication and control signal input / output unit for inputting and outputting a control signal, an image and audio signal inputted from the broadcast signal input / output unit, and a communication and control signal inputted from the communication and control signal input / output unit to be converted into an optical signal.
  • a signal synthesizing and photoelectric conversion unit for converting an optical signal input from an optical branch coupling and multiplexing unit into an electrical signal and outputting the signal to the broadcasting signal input / output unit and the control signal input / output unit, respectively, and the light input from the signal synthesizing and photoelectric conversion unit. Multiplex the signal and output it to the outside, and selectively receive the optical signal input from the outside to synthesize the signal
  • the ADD / DROP function is achieved by setting the wavelength of the optical signal output by the photoelectric conversion unit to a variable wavelength.
  • the ADD / DROP function is achieved by converting the wavelength of the optical signal that the optical branch combining and multiplexing unit can receive from the outside into a variable wavelength.
  • the apparatus further comprises a remote controller, wherein the remote controller converts the wavelength of the optical signal output by the photoelectric conversion unit into a variable wavelength, or the optical branch combining and multiplexing unit can receive an external signal. Control to convert wavelength to variable wavelength.
  • the apparatus further includes a power supply, wherein the power supply is supplied with field power and supplied to the inside and the outside of the optical transmission device, and is supplied with power from another external optical transmission device to provide the interior and exterior of the optical transmission device. Supply to the outside.
  • the present invention enables transmission and reception of one-to-one relay broadcast signals between an optical transmission apparatus and an optical transmission apparatus or a center apparatus as in the prior art, and a plurality of optical transmission apparatuses constitute a network, and a plurality of optical transmission apparatuses are connected to each other. It is possible to obtain the effect that the transmission and reception of multiple broadcast signals is possible.
  • FIG. 1 is a diagram schematically showing a relay site for broadcasting a sports game.
  • Fig. 2 is a functional block diagram showing the internal structure of a relay broadcast broadcasting system and an optical transmission device according to a preferred embodiment of the present invention.
  • 3 is a functional block diagram illustrating an internal configuration of the signal synthesizing and photoelectric conversion unit 30.
  • Fig. 2 is a functional block diagram showing the internal structure of a relay broadcast broadcasting system and an optical transmission device according to a preferred embodiment of the present invention.
  • a plurality of optical transmitters 100, 100-1, 100-2, ..., 100-n are distributed and disposed in necessary places at the relay site, and each optical transmitter 100, 100 -1, 100-2, ..., 100-n) are connected to the center device 200 at the same time and interconnected through the composite cable (C) to form a network.
  • the optical transmission device 100 of the present embodiment includes a broadcast signal input / output unit 50-1, 50-2, ..., 50-n for inputting and outputting video and audio signals captured by a camera, and for communication, data signals, and pan / Communication and input / output of control signals, such as tilt and contact, and image and audio signals inputted from the control signal input / output unit 70 and the broadcast signal input / output units 50-1, 50-2, ..., 50-n;
  • a signal synthesizing and photoelectric conversion unit for synthesizing the communication and control signals input from the control signal input / output unit 70 to encode or decode them, and combining or separating them to convert an optical signal into an electrical signal or an electrical signal into an optical signal ( 30) and optical branch coupling and multiplexing for combining or separating the optical signal input from the signal synthesizing and photoelectric conversion unit 30 or the optical signal input from another optical transmission device to ADD / DROP to another optical transmission device and a center device.
  • Part 10 is included.
  • the optical transmission device 100 may further include a power supply unit 90, the optical transmission device 100 receives the site power through the power supply unit 90 to the camera (60-1, 60-2, . , 60-n) or the like, or power to other optical transmitters 100-1, 100-2, ..., 100-n through the composite cable C, and another optical transmission. Power may be supplied from the device, and may be supplied where necessary, such as cameras 60-1, 60-2, ..., 60-n.
  • the configuration and function of the optical transmitters 100-1, 100-2,..., 100-n are basically the same as those of the optical transmitter 100.
  • Cameras 60-1, 60-2, ..., 60-n are connected to the plurality of broadcast signal input / output units 50-1, 50-2, ..., 50-n one to one, respectively, and each camera ( Broadcast signal input / output units 50-1, 50-2, ..., 50-n corresponding to video and audio of the relay site photographed by 60-1, 60-2, ..., 60-n respectively through cables and the like. Is entered.
  • the communication and control signal input / output unit 70 controls, for example, a communication signal for communication between the cameraman and the center device 200, a signal for controlling the pan / tilt of the camera, and a contact signal for turning on or off a specific camera. Signals are input and output to the signal synthesizing and photoelectric conversion unit 30, and these signals may be input from, for example, a remote control unit COM installed in the field or the center apparatus 200.
  • 3 is a functional block diagram illustrating an internal configuration of the signal synthesizing and photoelectric conversion unit 30.
  • the signal synthesizing and photoelectric conversion unit 30 is acquired by a plurality of cameras 60-1, 60-2, ..., 60-n arranged in the field and broadcast signal input / output units 50-1, 50-2,... Converts analog video and audio signals input through the 50-n) and analog communication and control signals inputted from the communication and control signal input / output unit 70 into digital signals, or digital inputs from another optical transmission apparatus described later.
  • An A / D / D / A converter 31 for converting a signal into an analog signal, a signal synthesizer 33 for synthesizing a video signal, an audio signal, and a control signal, and an electrical output from the signal synthesizer 33 And a photoelectric conversion unit 35 for converting the signal into an optical signal or conversely converting an optical signal input from another optical transmission device into an electrical signal.
  • the photoelectric conversion unit 35 of the signal synthesizing and photoelectric conversion unit 30 is configured to include a wavelength conversion photodiode, for example, by the control from the remote control unit COM of the center apparatus 200. It converts an electrical signal into an optical signal of a specific wavelength among a plurality of wavelength bands and has a variable wavelength function for outputting to the optical branch coupling and multiplexing unit 10.
  • the wavelength conversion photodiode and a technique for converting the electrical signal into an optical signal having a specific wavelength among the plurality of wavelength bands are well known techniques, and thus detailed description thereof will be omitted.
  • the reason for converting an electric signal into an optical signal of a specific wavelength among a plurality of wavelength bands, etc. are demonstrated in detail later.
  • the signal synthesis and photoelectric conversion unit 30 of the present invention specifically, the photoelectric conversion unit 35 is not limited to outputting an optical signal having a variable wavelength, and as described later, You may use it.
  • the A / D and D / A converter 31 may be omitted when the cameras 60-1, 60-2, ..., 60-n and the like are digital equipment.
  • the optical splitter coupling and multiplexing unit 10 selectively multiplexes a plurality of optical signals output from the signal synthesizing and photoelectric conversion unit 30, and the other optical transmission apparatuses 100-1 and 100-2 through the composite cable C. , ..., 100-n) and the center device 200, and other optical transmission device (100-1, 100-2, ..., 100-n) or the center device via the composite cable (C)
  • An optical signal from 200 is selectively received and output to the signal synthesis and photoelectric conversion unit 30.
  • the multiplexing of the optical signal in the optical branch combining and multiplexing section 10 is performed by a wavelength division multiplexing (WDM) method, and other optical transmission apparatuses 100-1, 100-2, ..., 100- n)
  • the optical branch combining and multiplexing unit 10 includes an optical ADD / DROP multiplexer in order to selectively transmit and receive optical signals between the center apparatuses 200, that is, perform an ADD / DROP function. Since the optical ADD / DROP multiplexer is a known technique, a detailed description thereof will be omitted.
  • the optical transmission apparatus 100 selectively transmits and receives an optical signal with a plurality of other optical transmission apparatuses 100-1, 100-2, ..., 100-n in the network, that is, ADD /
  • the signal synthesizing and photoelectric conversion unit 30 of the optical transmission apparatus 100 uses the wavelength of the optical signal to be output, for example, using the remote control unit COM of the center apparatus 200.
  • the remote control unit COM of the center apparatus 200 By user control, for example,? 1,? 2,? 3,... It should be configured to be able to output at a variable wavelength, such as ⁇ n.
  • the optical branch coupling and multiplexing unit 10 of the optical transmitter 100 transmits and receives only an optical signal having a wavelength? 1.
  • the optical branch coupling and multiplexing unit 10 of the optical transmission device 100-1 transmits and receives only an optical signal having a wavelength ⁇ 2
  • the optical branch coupling and multiplexing unit 10 of the optical transmission device 100-2 has an optical signal having a wavelength ⁇ 3. Only send and receive.
  • the ADD / DROP function of the present invention can be realized by selecting a specific optical transmission device among a plurality of optical transmission devices 100, 100-1, 100-2, ..., 100-n to transmit or receive an optical signal. have.
  • the wavelength of the optical signal output from the signal synthesizing and photoelectric conversion unit 30 to the optical branch coupling and multiplexing unit 10 is a fixed wavelength, and the optical branch coupling and multiplexing is performed.
  • the unit 10 may be able to selectively change the wavelength of the optical signal transmitted and received using, for example, an optical filter.
  • the wavelength of the output optical signal should be different for each signal synthesizing and photoelectric conversion unit 30 of each of the plurality of optical transmission apparatuses 100, 100-1, 100-2,..., 100-n.
  • the user can arbitrarily change the wavelength of the optical signal transmitted and received by the optical branch coupling and multiplexing unit 10 through, for example, the remote control unit COM of the center apparatus 200.
  • the optical transmission apparatus 100, the optical transmission apparatus 100-1, the optical transmission apparatus 100-2 and the center apparatus 200 are respectively disposed at the relay site and connected to the network through the composite cable C.
  • the operation of the optical transmission device of the present embodiment will be described with reference to FIG.
  • the PD directing and supervising the broadcast broadcasts the relay site while watching the scene while watching the video obtained from each site through the monitor of the center apparatus 200.
  • Video and audio images respectively captured by a plurality of cameras 60-1, 60-2, ..., 60-n arranged in the field are respectively broadcast signal input / output units 50-1, 50-2, ..., 50-. n) and when a data signal such as a subtitle to be superimposed on the screen is input through the communication and control signal input / output unit 70, the signal synthesis and photoelectric conversion unit 30 inputs a plurality of data signals.
  • the optical branching and multiplexing unit 10 performs a process of synthesizing the data signal to a specific image signal, such as an image and an audio signal, as necessary, and then converting the plurality of electrical signals into a plurality of optical signals having different wavelengths.
  • the optical branch coupling and multiplexing unit 10 multiplexes a plurality of optical signals input from the optical branch coupling and multiplexing unit 10 and outputs the multiplexed optical signals to other optical transmission apparatuses and center apparatuses in the network.
  • the remote controller is the communication and control signal input and output unit 70 of the optical transmission device 100
  • the optical synthesis apparatus 100 is controlled by converting the signal synthesis and the wavelength of the output optical signal of the photoelectric conversion unit 35 of the photoelectric conversion unit 30 into an optical signal having a wavelength that the optical transmission apparatus 100-1 can receive.
  • the image captured by the camera 60-1 is added to the optical transmission device 100-1.
  • the optical transmission apparatus 100-1 receives all of the plurality of images photographed by the plurality of cameras of the optical transmission apparatus 100, only the image photographed by the camera 60-2 is received.
  • the remote control device COM performs signal synthesis and control signal input / output unit 70 of the optical transmission device 100 and outputs the wavelength of the output optical signal of the photoelectric conversion unit 35 of the photoelectric conversion unit 30.
  • Image transmission by the camera 60-2 of the optical transmission device 100 is controlled by controlling the camera 60-2 to convert the wavelength of the optical signal of the captured image into an optical signal of a wavelength that the optical transmission device 100-1 cannot receive.
  • DROP on device 100-1 is controlled by controlling the camera 60-2 to convert the wavelength of the optical signal of the captured image into an optical signal of a wavelength that the optical transmission device 100-1 cannot receive.
  • the optical signal output from the signal synthesizing and photoelectric conversion unit 30 is an optical signal having a fixed wavelength, and the wavelength of the optical signal received by the optical splitting / coupling and multiplexing unit 10 can be selectively changed.
  • the ADD function is a remote control device COM through the communication and control signal input and output unit 70 of the optical transmission device 100-1
  • the optical branch coupling and multiplexing unit 10 is the camera of the optical transmission device 100 60-1 is performed by controlling to receive the captured image
  • the DROP function is performed by the remote controller COM to perform optical branch combining and multiplexing through the communication and control signal input / output unit 70 of the optical transmission device 100-1.
  • the unit 10 may control the camera 60-2 of the optical transmission apparatus 100 to not receive only the image captured by the optical transmission apparatus 100.
  • the present invention enables transmission and reception of one-to-one relay broadcast signals between the optical transmission apparatus and the optical transmission apparatus or the center apparatus as in the related art, and a plurality of optical transmission apparatuses constitute a network, and thus the plurality of optical transmission apparatuses. It is possible to transmit and receive one to many relay broadcast signals.
  • the ADD / DROP function allows the ADD or DROP of the specific video or the entire video of the specific optical transmission apparatus among the one or more relay broadcast signals transmitted and received by one-to-many, so that the transmission path of the relay broadcast signal can be freely selected and changed.
  • the remote control device COM is disposed in the center device 200 to perform a remote control function in the center device.
  • the present invention is not limited thereto, and the remote control device COM may include the center device 200. It may be arrange
  • 50-1, 50-2, 50-n broadcasting signal input / output unit

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Optical Communication System (AREA)

Abstract

The present invention is an optical transport system having a broadcast signal add/drop function, comprising: a broadcast signal input/output unit for inputting/outputting images and voice signals captured by one or more cameras; a communication and control signal input/output unit for inputting/outputting a communication and control signal; a signal synthesizing and photoelectric conversion unit for synthesizing the image and voice signal input from the broadcast signal input/output unit and the communication and control signal input from the communication and control signal input/output unit and converting the signals into optical signals, and converting the optical signal input from an optical add/drop multiplexer unit (10) into an electrical signal and outputting the electrical signal to each of the broadcast signal input/output unit and the control signal input/output unit; and the optical add/drop multiplexer unit (10) for multiplexing the optical signal input from the signal synthesizing and photoelectric conversion unit and outputting the multiplexed signal to an external unit, and selectively receiving the optical signal input from an external unit and outputting the received optical signal to the signal synthesizing and photoelectric conversion unit.

Description

방송신호 광 전송장치Broadcast signal optical transmission device
본 발명은 풀 HD 등의 고화질 중계방송의 방송신호를 전송하는 방송신호 광 전송장치에 관한 것이다.The present invention relates to a broadcast signal optical transmission device for transmitting a broadcast signal of high-definition relay broadcasting such as full HD.
현재 텔레비전 방송은 2012년 말 전면적인 디지털방송으로의 전환을 앞두고 크게 변화하고 있으며, 이에 따라 축구, 야구, 골프 등의 각종 스포츠경기의 중계방송은 물론, 각종 기념식이나 행사 등의 중계방송은 고화질의 풀 HD방식으로 이루어지고 있다.Currently, television broadcasting is changing drastically ahead of the transition to full-scale digital broadcasting at the end of 2012. Accordingly, broadcasts of various sports events such as soccer, baseball, and golf, as well as broadcasts of various ceremonies and events, It is done in full HD.
도 1은 스포츠경기를 중계방송하는 중계현장을 모식적으로 나타내는 도면으로, 통상 상기 각종 중계방송 현장은 직접 현장을 촬영함으로써 화상 신호 및 음성 신호를 얻는 복수의 텔레비전 카메라와 예를 들어 아나운서 및 해설자 등이 현장을 보면서 현장 상황을 중계 및 해설하는 중계석을 포함하는 원격장치와, 예를 들어 VAN 등에 앉아서 텔레비전 카메라가 촬영한 화상 및 음성과 중계석으로부터의 중계상황을 모니터 등을 이용하여 보면서 이들을 지휘, 통제하는 센터장치로 구성되고, 상기 중계석 이외에도, 예를 들어 스포츠 경기의 경우에는 라커 룸 등에서의 선수나 감독의 인터뷰 등도 이루어지며, 이들 현장에서 수집된 화상 및 음성은 VAN 등에 설치된 별도의 전송장치를 통해서 다중화되어 방송국으로 유선 또는 무선으로 전송된다.FIG. 1 is a diagram schematically illustrating a relay site for broadcasting a sports game. In general, the various broadcast sites include a plurality of television cameras for obtaining image signals and audio signals by directly photographing a scene, and an announcer and a commentator. Remote device including a relay seat that relays and explains the scene situation while watching the site, and monitors and monitors the video and audio taken by the television camera and relay status from the relay seat, for example, sitting in a VAN. It is composed of a center device, and, in addition to the relay seat, for example, in the case of a sporting event, an interview with a player or a manager in a locker room, etc., is performed. Multiplexed and transmitted by wire or wireless to the broadcast station.
일반적으로 중계방송은 현장의 다양한 모습을 직접 촬영하기 위해서 2대 이상의 복수의 카메라가 사용되고, 복수의 각각의 카메라에서 촬영된 화상 및 음성신호는 휴대형 방송신호 광 전송장치(Portable Broadcasting Transport System, 이하 「PBTS」라 한다)를 통해서 수집되어 전송된다.In general, two or more cameras are used to directly broadcast a variety of scenes, and images and audio signals captured by each of the cameras are portable broadcasting transport systems. PBTS "is collected and transmitted.
이와 같은 휴대형 광 전송장치로 본 출원인에 의해 출원되어 미공개상태인 특허문헌 1의 기술이 있다.There is a technique of Patent Literature 1 filed by the present applicant for such a portable optical transmission device, which is in an unpublished state.
그러나 종래의 광 전송장치에서는 원격장치와 센터장치 간의 네트워크 구성이 고정되어 있으므로, 원격장치와 원격장치 상호 간, 원격장치와 센터장치 간의 정보의 교환경로의 변경이 불가능하고, 또, 원격장치와 센터장치 상호 간의 정보교환도 어려운 것이 현실이다.However, in the conventional optical transmission device, since the network configuration between the remote device and the center device is fixed, it is impossible to change the information exchange path between the remote device and the remote device, and between the remote device and the center device. The reality is that information exchange between devices is also difficult.
[선행기술문헌][Preceding technical literature]
[특허문헌][Patent Documents]
특허문헌 1 : 특허출원 2011-67759호Patent Document 1: Patent Application No. 2011-67759
본 발명은 상기 과제를 고려하여 이루어진 것으로, 원격장치와 원격장치 상호 간 및 원격장치와 센터장치 간을 서로 네트워크로 연결하여, 종래와 같은 1 대 1 구조의 전송은 물론 1 대 다(多)의 전송도 가능하고, 또, 네트워크의 각 노드(node)에서 복수의 노드로 방송신호(광신호)가 전송되는 전송경로를 자유롭게 선택 및 변경할 수 있는 ADD/DROP 가능한 방송신호 광 전송장치를 제공하는 것을 목적으로 한다.The present invention has been made in view of the above problems, and by connecting a remote device and a remote device with each other and a remote device and a center device with each other in a network, the transmission of a conventional one-to-one structure as well as one-to-many The present invention also provides an optical signal transmission apparatus capable of ADD / DROP, which can transmit and transmit and freely select and change a transmission path through which a broadcast signal (optical signal) is transmitted from each node of the network to a plurality of nodes. The purpose.
상기 목적을 달성하기 위한 본 발명의 방송신호 광 전송장치는, 방송신호의 ADD/DROP 기능을 갖는 광 전송장치로, 하나 이상의 카메라가 촬영한 영상 및 음성신호를 입출력하는 방송신호 입출력부와, 통신 및 제어신호를 입출력하는 통신 및 제어신호 입출력부와, 상기 방송신호 입출력부로부터 입력되는 화상 및 음성신호와 상기 통신 및 제어신호 입출력부로부터 입력되는 통신 및 제어신호를 합성하여 광신호로 변환하고, 광 분기 결합 및 다중화부로부터 입력되는 광신호를 전기신호로 변환하여 상기 방송신호 입출력부 및 상기 제어신호 입출력부로 각각 출력하는 신호 합성 및 광전변환부와, 상기 신호 합성 및 광전변환부로부터 입력되는 광신호를 다중화하여 외부로 출력하고, 외부로부터 입력되는 광신호를 선택적으로 수신하여 상기 신호 합성 및 광전변환부로 출력하는 광 분기 결합 및 다중화부(10)를 포함한다.The broadcast signal optical transmission device of the present invention for achieving the above object is an optical transmission device having an ADD / DROP function of the broadcast signal, the broadcast signal input and output unit for inputting and outputting video and audio signals taken by one or more cameras, And a communication and control signal input / output unit for inputting and outputting a control signal, an image and audio signal inputted from the broadcast signal input / output unit, and a communication and control signal inputted from the communication and control signal input / output unit to be converted into an optical signal. A signal synthesizing and photoelectric conversion unit for converting an optical signal input from an optical branch coupling and multiplexing unit into an electrical signal and outputting the signal to the broadcasting signal input / output unit and the control signal input / output unit, respectively, and the light input from the signal synthesizing and photoelectric conversion unit. Multiplex the signal and output it to the outside, and selectively receive the optical signal input from the outside to synthesize the signal An optical branch coupling and a multiplexing unit (10) for output to the photoelectric conversion.
바람직하게는, 상기 ADD/DROP 기능은 상기 광전변환부가 출력하는 광신호의 파장을 가변파장으로 함으로써 이루어진다.Preferably, the ADD / DROP function is achieved by setting the wavelength of the optical signal output by the photoelectric conversion unit to a variable wavelength.
바람직하게는, 상기 ADD/DROP 기능은 상기 광 분기 결합 및 다중화부가 외부로부터 수신할 수 있는 광신호의 파장을 가변파장으로 변환함으로써 이루어진다.Preferably, the ADD / DROP function is achieved by converting the wavelength of the optical signal that the optical branch combining and multiplexing unit can receive from the outside into a variable wavelength.
바람직하게는, 원격제어장치를 더 포함하며, 상기 원격제어장치가 상기 광전변환부가 출력하는 광신호의 파장을 가변파장으로 변환하거나 또는 상기 광 분기 결합 및 다중화부가 외부로부터 수신할 수 있는 광신호의 파장을 가변파장으로 변환하도록 제어한다.Preferably, the apparatus further comprises a remote controller, wherein the remote controller converts the wavelength of the optical signal output by the photoelectric conversion unit into a variable wavelength, or the optical branch combining and multiplexing unit can receive an external signal. Control to convert wavelength to variable wavelength.
바람직하게는, 전원공급장치를 더 포함하며, 상기 전원공급장치는 현장 전원을 공급받아서 광 전송장치 내부 및 외부로 공급하고, 또, 외부의 다른 광 전송장치로부터 전원을 공급받아서 광 전송장치 내부 및 외부로 공급한다.Preferably, the apparatus further includes a power supply, wherein the power supply is supplied with field power and supplied to the inside and the outside of the optical transmission device, and is supplied with power from another external optical transmission device to provide the interior and exterior of the optical transmission device. Supply to the outside.
본 발명은 종래와 같이 광 전송장치와 광 전송장치 또는 센터장치 사이의 1 대 1의 중계방송신호의 송수신이 가능한 동시에, 복수의 광 전송장치가 네트워크를 구성하여, 복수의 광 전송장치끼리 1 대 다의 중계방송신호의 송수신이 가능하다는 효과를 얻을 수 있다.The present invention enables transmission and reception of one-to-one relay broadcast signals between an optical transmission apparatus and an optical transmission apparatus or a center apparatus as in the prior art, and a plurality of optical transmission apparatuses constitute a network, and a plurality of optical transmission apparatuses are connected to each other. It is possible to obtain the effect that the transmission and reception of multiple broadcast signals is possible.
또, ADD/DROP 기능에 의해 1 대 다로 송수신되는 중계방송신호 중 특정 영상 또는 특정 광 전송장치 전체의 영상을 ADD하거나 또는 DROP할 수 있으므로, 중계방송신호의 전송경로를 자유롭게 선택 및 변경할 수 있다는 효과도 얻을 수 있다.In addition, it is possible to add or drop the specific video or the entire video of the specific optical transmission apparatus among the one or more relay broadcast signals transmitted and received by the ADD / DROP function, so that the transmission path of the relay broadcast signal can be freely selected and changed. Can also be obtained.
도 1은 스포츠경기를 중계방송하는 중계현장을 모식적으로 나타내는 도면이다.1 is a diagram schematically showing a relay site for broadcasting a sports game.
도 2는 본 발명의 바람직한 실시형태의 중계방송 방송시스템 및 광 전송장치의 내부 구성을 나타내는 기능 블록도이다.Fig. 2 is a functional block diagram showing the internal structure of a relay broadcast broadcasting system and an optical transmission device according to a preferred embodiment of the present invention.
도 3은 신호 합성 및 광전변환부(30)의 내부 구성을 나타내는 기능 블록도이다.3 is a functional block diagram illustrating an internal configuration of the signal synthesizing and photoelectric conversion unit 30.
이하, 본 발명의 바람직한 실시형태에 대해서 도면을 참조하면서 상세하게 설명한다.EMBODIMENT OF THE INVENTION Hereinafter, preferred embodiment of this invention is described in detail, referring drawings.
도 2는 본 발명의 바람직한 실시형태의 중계방송 방송시스템 및 광 전송장치의 내부 구성을 나타내는 기능 블록도이다.Fig. 2 is a functional block diagram showing the internal structure of a relay broadcast broadcasting system and an optical transmission device according to a preferred embodiment of the present invention.
도 2에 도시된 것과 같이, 복수의 광 전송장치(100, 100-1, 100-2, …, 100-n)가 중계 현장의 필요한 장소에 분산 배치되고, 각각의 광 전송장치(100, 100-1, 100-2, …, 100-n)는 복합케이블(C)을 통해서 상호 연결되는 동시에 센터장치(200)와도 연결되어서 네트워크를 구성한다.As shown in FIG. 2, a plurality of optical transmitters 100, 100-1, 100-2, ..., 100-n are distributed and disposed in necessary places at the relay site, and each optical transmitter 100, 100 -1, 100-2, ..., 100-n) are connected to the center device 200 at the same time and interconnected through the composite cable (C) to form a network.
본 실시형태의 광 전송장치(100)는 카메라가 촬영한 영상 및 음성신호를 입출력하는 방송신호 입출력부(50-1, 50-2, …, 50-n)와, 통신이나 데이터신호, 팬/틸트, 접점 등의 제어신호를 입출력하는 통신 및 제어신호 입출력부(70)와, 방송신호 입출력부(50-1, 50-2, …, 50-n)로부터 입력되는 화상 및 음성신호와 통신 및 제어신호 입출력부(70)로부터 입력되는 통신 및 제어신호를 합성하여 인코드 또는 디코드하고, 결합 또는 분리하여 광신호를 전기신호로 변환하거나 전기신호를 광신호로 변환하는 신호 합성 및 광전변환부(30)와, 신호 합성 및 광전변환부(30)로부터 입력되는 광신호 또는 다른 광 전송장치로부터 입력되는 광신호를 결합 또는 분리하여 다른 광 전송장치 및 센터장치로 ADD/DROP하는 광 분기 결합 및 다중화부(10)를 포함한다.The optical transmission device 100 of the present embodiment includes a broadcast signal input / output unit 50-1, 50-2, ..., 50-n for inputting and outputting video and audio signals captured by a camera, and for communication, data signals, and pan / Communication and input / output of control signals, such as tilt and contact, and image and audio signals inputted from the control signal input / output unit 70 and the broadcast signal input / output units 50-1, 50-2, ..., 50-n; A signal synthesizing and photoelectric conversion unit for synthesizing the communication and control signals input from the control signal input / output unit 70 to encode or decode them, and combining or separating them to convert an optical signal into an electrical signal or an electrical signal into an optical signal ( 30) and optical branch coupling and multiplexing for combining or separating the optical signal input from the signal synthesizing and photoelectric conversion unit 30 or the optical signal input from another optical transmission device to ADD / DROP to another optical transmission device and a center device. Part 10 is included.
또, 광 전송장치(100)는 전원공급부(90)를 더 포함해도 좋으며, 광 전송장치(100)는 전원공급부(90)를 통해서 현장 전원을 공급받아서 카메라(60-1, 60-2, …, 60-n) 등 필요한 곳에 공급하거나, 또는 복합케이블(C)을 통해서 다른 광 전송장치(100-1, 100-2, …, 100-n)에 전원을 공급할 수 있고, 또, 다른 광 전송장치로부터 전원을 공급받아서 카메라(60-1, 60-2, …, 60-n) 등 필요한 곳에 공급할 수도 있다.In addition, the optical transmission device 100 may further include a power supply unit 90, the optical transmission device 100 receives the site power through the power supply unit 90 to the camera (60-1, 60-2, ...). , 60-n) or the like, or power to other optical transmitters 100-1, 100-2, ..., 100-n through the composite cable C, and another optical transmission. Power may be supplied from the device, and may be supplied where necessary, such as cameras 60-1, 60-2, ..., 60-n.
도 2에서 광 전송장치(100-1, 100-2, …, 100-n)의 구성 및 기능은 광 전송장치(100)와 기본적으로 동일하다.In FIG. 2, the configuration and function of the optical transmitters 100-1, 100-2,..., 100-n are basically the same as those of the optical transmitter 100.
복수의 방송신호 입출력부(50-1, 50-2, …, 50-n)에는 각각 1 대 1로 카메라(60-1, 60-2, …, 60-n)가 연결되며, 각 카메라(60-1, 60-2, …, 60-n)가 촬영한 중계현장의 영상 및 음성이 케이블 등을 통해서 각각 대응하는 방송신호 입출력부(50-1, 50-2, …, 50-n)로 입력된다.Cameras 60-1, 60-2, ..., 60-n are connected to the plurality of broadcast signal input / output units 50-1, 50-2, ..., 50-n one to one, respectively, and each camera ( Broadcast signal input / output units 50-1, 50-2, ..., 50-n corresponding to video and audio of the relay site photographed by 60-1, 60-2, ..., 60-n respectively through cables and the like. Is entered.
통신 및 제어신호 입출력부(70)는 예를 들어 카메라맨과 센터장치(200) 등과의 통신을 위한 통신신호, 카메라의 팬/틸트를 제어하는 신호, 특정 카메라를 온 또는 오프하는 접점신호 등의 제어신호를 입력하여 신호 합성 및 광전변환부(30)로 출력하며, 이들 신호는 예를 들어 현장이나 센터장치(200)에 설치된 원격제어부(COM)로부터 입력될 수 있다.The communication and control signal input / output unit 70 controls, for example, a communication signal for communication between the cameraman and the center device 200, a signal for controlling the pan / tilt of the camera, and a contact signal for turning on or off a specific camera. Signals are input and output to the signal synthesizing and photoelectric conversion unit 30, and these signals may be input from, for example, a remote control unit COM installed in the field or the center apparatus 200.
다음에, 도 3을 이용하여 신호 합성 및 광전변환부(30)에 대해서 상세하게 설명한다. 도 3은 신호 합성 및 광전변환부(30)의 내부 구성을 나타내는 기능 블록도이다.Next, the signal synthesis and photoelectric conversion unit 30 will be described in detail with reference to FIG. 3. 3 is a functional block diagram illustrating an internal configuration of the signal synthesizing and photoelectric conversion unit 30.
신호 합성 및 광전변환부(30)는 현장에 배치된 복수의 카메라(60-1, 60-2, …, 60-n)에 의해 취득되어 방송신호 입출력부(50-1, 50-2, …, 50-n)를 통해서 입력되는 아날로그 영상 및 음성신호와 통신 및 제어신호 입출력부(70)로부터 입력되는 아날로그 통신 및 제어신호를 디지털 신호로 변환하거나, 또는 후술하는 다른 광 전송장치로부터 입력되는 디지털 신호를 아날로그 신호로 변환하는 A/D·D/A 변환부(31)와, 영상신호 및 음성신호와 제어신호를 합성하는 신호 합성부(33)와, 신호 합성부(33)에서 출력되는 전기신호를 광신호로 변환하거나, 역으로 다른 광 전송장치로부터 입력되는 광신호를 전기신호로 변환하는 광전변환부(35)를 포함한다.The signal synthesizing and photoelectric conversion unit 30 is acquired by a plurality of cameras 60-1, 60-2, ..., 60-n arranged in the field and broadcast signal input / output units 50-1, 50-2,... Converts analog video and audio signals input through the 50-n) and analog communication and control signals inputted from the communication and control signal input / output unit 70 into digital signals, or digital inputs from another optical transmission apparatus described later. An A / D / D / A converter 31 for converting a signal into an analog signal, a signal synthesizer 33 for synthesizing a video signal, an audio signal, and a control signal, and an electrical output from the signal synthesizer 33 And a photoelectric conversion unit 35 for converting the signal into an optical signal or conversely converting an optical signal input from another optical transmission device into an electrical signal.
여기서, 신호 합성 및 광전변환부(30)의 광전변환부(35)는 파장변환 광 다이오드를 포함하는 구성으로 이루어지며, 예를 들어 센터장치(200)의 원격제어부(COM)로부터의 제어에 의해 전기신호를 복수의 파장 대역 중 특정 파장의 광신호로 변환하여 광 분기 결합 및 다중화부(10)로 출력하는 가변 파장 기능을 갖는다. 파장변환 광 다이오드 및 이에 의해 전기신호를 복수의 파장 대역 중 특정 파장의 광신호로 변환하는 기술은 공지의 기술이므로 여기에서는 상세한 설명은 생략한다. 또, 전기신호를 복수의 파장 대역 중 특정 파장의 광신호로 변환하는 이유 등에 대해서는 나중에 상세하게 설명한다.Here, the photoelectric conversion unit 35 of the signal synthesizing and photoelectric conversion unit 30 is configured to include a wavelength conversion photodiode, for example, by the control from the remote control unit COM of the center apparatus 200. It converts an electrical signal into an optical signal of a specific wavelength among a plurality of wavelength bands and has a variable wavelength function for outputting to the optical branch coupling and multiplexing unit 10. The wavelength conversion photodiode and a technique for converting the electrical signal into an optical signal having a specific wavelength among the plurality of wavelength bands are well known techniques, and thus detailed description thereof will be omitted. In addition, the reason for converting an electric signal into an optical signal of a specific wavelength among a plurality of wavelength bands, etc. are demonstrated in detail later.
그러나 본 발명의 신호 합성 및 광전변환부(30), 구체적으로는 광전변환부(35)가 가변 파장의 광신호를 출력하는 것으로 한정되는 것은 아니며, 후술하는 것과 같이 고정 파장의 광신호를 출력하는 것으로 해도 좋다.However, the signal synthesis and photoelectric conversion unit 30 of the present invention, specifically, the photoelectric conversion unit 35 is not limited to outputting an optical signal having a variable wavelength, and as described later, You may use it.
또, A/D·D/A 변환부(31)는 카메라(60-1, 60-2, …, 60-n) 등이 디지털 장비인 경우에는 없어도 좋다.The A / D and D / A converter 31 may be omitted when the cameras 60-1, 60-2, ..., 60-n and the like are digital equipment.
광 분기 결합 및 다중화부(10)는 신호 합성 및 광전변환부(30)에서 출력되는 복수의 광신호를 선택적으로 다중화하여 복합케이블(C)을 통해서 다른 광 전송장치(100-1, 100-2, …, 100-n) 및 센터장치(200)로 선택적으로 전송하고, 또, 복합케이블(C)을 통해서 다른 광 전송장치(100-1, 100-2, …, 100-n) 또는 센터장치(200)로부터의 광신호를 선택적으로 수신하여 신호 합성 및 광전변환부(30)로 출력한다.The optical splitter coupling and multiplexing unit 10 selectively multiplexes a plurality of optical signals output from the signal synthesizing and photoelectric conversion unit 30, and the other optical transmission apparatuses 100-1 and 100-2 through the composite cable C. , ..., 100-n) and the center device 200, and other optical transmission device (100-1, 100-2, ..., 100-n) or the center device via the composite cable (C) An optical signal from 200 is selectively received and output to the signal synthesis and photoelectric conversion unit 30.
광 분기 결합 및 다중화부(10)에서의 광신호의 다중화는 파장분할 다중화(WDM : Wavelen호 Division Multiplexing)방식에 의해 이루어지며, 다른 광 전송장치(100-1, 100-2, …, 100-n) 또는 센터장치(200) 간의 선택적인 광신호의 송수신, 즉 ADD/DROP 기능을 수행하기 위해서 광 분기 결합 및 다중화부(10)는 광 ADD/DROP 멀티플렉서(Optical ADD/DROP Multiflexer)로 이루어진다. 광 ADD/DROP 멀티플렉서는 공지의 기술이므로 여기에서는 구체적인 설명은 생략한다.The multiplexing of the optical signal in the optical branch combining and multiplexing section 10 is performed by a wavelength division multiplexing (WDM) method, and other optical transmission apparatuses 100-1, 100-2, ..., 100- n) Alternatively, the optical branch combining and multiplexing unit 10 includes an optical ADD / DROP multiplexer in order to selectively transmit and receive optical signals between the center apparatuses 200, that is, perform an ADD / DROP function. Since the optical ADD / DROP multiplexer is a known technique, a detailed description thereof will be omitted.
다만, 본 실시형태에서 광 전송장치(100)가 네트워크 내의 복수의 다른 광 전송장치(100-1, 100-2, …, 100-n)와 선택적으로 광신호의 송수신을 하기 위해서, 즉 ADD/DROP이 가능하기 위해서는 앞에서도 설명한 것과 같이 광 전송장치(100)의 신호 합성 및 광전변환부(30)는 출력하는 광신호의 파장을 예를 들어 센터장치(200)의 원격제어부(COM)를 이용한 사용자의 제어에 의해, 예를 들어 λ1, λ2, λ3, …, λn과 같이 가변 파장으로 출력할 수 있게 구성되어야 한다.In the present embodiment, however, the optical transmission apparatus 100 selectively transmits and receives an optical signal with a plurality of other optical transmission apparatuses 100-1, 100-2, ..., 100-n in the network, that is, ADD / In order to enable DROP, as described above, the signal synthesizing and photoelectric conversion unit 30 of the optical transmission apparatus 100 uses the wavelength of the optical signal to be output, for example, using the remote control unit COM of the center apparatus 200. By user control, for example,? 1,? 2,? 3,... It should be configured to be able to output at a variable wavelength, such as λn.
또, 복수의 광 전송장치(100, 100-1, 100-2, …, 100-n)에서 예를 들어 광 전송장치 100의 광 분기 결합 및 다중화부(10)는 파장 λ1의 광신호만을 송수신하고, 광 전송장치 100-1의 광 분기 결합 및 다중화부(10)는 파장 λ2의 광신호만을 송수신하며, 광 전송장치 100-2의 광 분기 결합 및 다중화부(10)는 파장 λ3의 광신호만을 송수신하도록 하여야한다.Also, in the plurality of optical transmitters 100, 100-1, 100-2, ..., 100-n, for example, the optical branch coupling and multiplexing unit 10 of the optical transmitter 100 transmits and receives only an optical signal having a wavelength? 1. The optical branch coupling and multiplexing unit 10 of the optical transmission device 100-1 transmits and receives only an optical signal having a wavelength λ 2, and the optical branch coupling and multiplexing unit 10 of the optical transmission device 100-2 has an optical signal having a wavelength λ 3. Only send and receive.
즉, 필요에 따라서 사용자가 예를 들어 센터장치(200)의 원격제어부(COM)에 의해 신호 합성 및 광전변환부(30)의 출력 광신호의 파장을 조절함으로써 각각 특정 파장의 광신호만을 송수신하는 복수의 광 전송장치(100, 100-1, 100-2, …, 100-n) 중 원하는 특정의 광 전송장치를 선택하여 광신호를 전송 또는 수신하도록 함으로써 본 발명의 ADD/DROP 기능을 실현할 수 있다.That is, the user transmits and receives only an optical signal having a specific wavelength by adjusting the wavelength of the signal synthesis and the output optical signal of the photoelectric conversion unit 30, for example, by the remote control unit COM of the center apparatus 200 as needed. The ADD / DROP function of the present invention can be realized by selecting a specific optical transmission device among a plurality of optical transmission devices 100, 100-1, 100-2, ..., 100-n to transmit or receive an optical signal. have.
그러나 본 발명은 이에 한정되는 것은 아니며, 예를 들어 신호 합성 및 광전변환부(30)에서 광 분기 결합 및 다중화부(10)로 출력하는 광신호의 파장은 고정 파장으로 하고, 광 분기 결합 및 다중화부(10)에서 예를 들어 광 필터를 이용하여 송수신하는 광신호의 파장을 선택적으로 변경할 수 있게 해도 좋다.However, the present invention is not limited thereto. For example, the wavelength of the optical signal output from the signal synthesizing and photoelectric conversion unit 30 to the optical branch coupling and multiplexing unit 10 is a fixed wavelength, and the optical branch coupling and multiplexing is performed. The unit 10 may be able to selectively change the wavelength of the optical signal transmitted and received using, for example, an optical filter.
물론, 이 경우에는 복수의 광 전송장치(100, 100-1, 100-2, …, 100-n) 각각의 신호 합성 및 광전변환부(30)마다 출력 광신호의 파장이 서로 달라야 한다. 또, 광 분기 결합 및 다중화부(10)에서의 송수신 광신호의 파장의 선택적 변경은 예를 들어 센터장치(200)의 원격제어부(COM)를 통해서 사용자가 임의로 할 수 있다.Of course, in this case, the wavelength of the output optical signal should be different for each signal synthesizing and photoelectric conversion unit 30 of each of the plurality of optical transmission apparatuses 100, 100-1, 100-2,..., 100-n. In addition, the user can arbitrarily change the wavelength of the optical signal transmitted and received by the optical branch coupling and multiplexing unit 10 through, for example, the remote control unit COM of the center apparatus 200.
이하, 예를 들어 광 전송장치(100), 광 전송장치(100-1), 광 전송장치(100-2) 및 센터장치(200)가 각각 중계 현장에 배치되어 복합케이블(C)을 통해 네트워크로 연결되고, 각각의 카메라는 필요한 장소에 배치되어 촬영을 함으로써 중계방송을 하는 것으로 가정하여 본 실시형태의 광 전송장치의 동작에 대해서 도 2를 참조하면서 설명한다.Hereinafter, for example, the optical transmission apparatus 100, the optical transmission apparatus 100-1, the optical transmission apparatus 100-2 and the center apparatus 200 are respectively disposed at the relay site and connected to the network through the composite cable C. The operation of the optical transmission device of the present embodiment will be described with reference to FIG.
중계방송을 지휘, 감독하는 PD가 센터장치(200)의 모니터를 통해서 각 현장에서 입수되는 영상을 보면서 현장을 보면서 중계현장을 지휘한다.The PD directing and supervising the broadcast broadcasts the relay site while watching the scene while watching the video obtained from each site through the monitor of the center apparatus 200.
현장에 배치된 복수의 카메라(60-1, 60-2, …, 60-n)가 각각 촬영한 영상 및 음성은 각각 대응하는 방송신호 입출력부(50-1, 50-2, …, 50-n)를 통해서 입력되고, 또, 통신 및 제어신호 입출력부(70)를 통해서 예를 들어 화면에 중첩될 자막 등의 데이터신호가 입력되면, 신호 합성 및 광전변환부(30)에서는 입력되는 복수의 화상 및 음성신호 중 필요에 따라서 특정 화상 신호에 상기 데이터신호를 합성하는 등의 처리를 하고, 이어서 복수의 전기신호를 각각 다른 파장을 갖는 복수의 광신호로 변환하여 광 분기 결합 및 다중화부(10)로 출력한다.Video and audio images respectively captured by a plurality of cameras 60-1, 60-2, ..., 60-n arranged in the field are respectively broadcast signal input / output units 50-1, 50-2, ..., 50-. n) and when a data signal such as a subtitle to be superimposed on the screen is input through the communication and control signal input / output unit 70, the signal synthesis and photoelectric conversion unit 30 inputs a plurality of data signals. The optical branching and multiplexing unit 10 performs a process of synthesizing the data signal to a specific image signal, such as an image and an audio signal, as necessary, and then converting the plurality of electrical signals into a plurality of optical signals having different wavelengths. )
광 분기 결합 및 다중화부(10)는 광 분기 결합 및 다중화부(10)로부터 입력되는 복수의 광신호를 다중화하여 네트워크 내의 다른 광 전송장치 및 센터장치로 출력한다.The optical branch coupling and multiplexing unit 10 multiplexes a plurality of optical signals input from the optical branch coupling and multiplexing unit 10 and outputs the multiplexed optical signals to other optical transmission apparatuses and center apparatuses in the network.
이때, 예를 들어 광 전송장치 100의 카메라 60-1이 촬영한 영상을 광 전송장치 100-1에 ADD 하고자 하면, 원격제어장치(COM)는 광 전송장치 100의 통신 및 제어신호 입출력부(70)를 통해서 신호 합성 및 광전변환부(30)의 광전변환부(35)의 출력 광신호의 파장을 광 전송장치 100-1이 수신할 수 있는 파장의 광신호로 변환하도록 제어함으로써 광 전송장치 100의 카메라 60-1이 촬영한 영상이 광 전송장치 100-1에 ADD된다.At this time, for example, if the camera 60-1 of the optical transmission device 100 wants to ADD the image to the optical transmission device 100-1, the remote controller (COM) is the communication and control signal input and output unit 70 of the optical transmission device 100 The optical synthesis apparatus 100 is controlled by converting the signal synthesis and the wavelength of the output optical signal of the photoelectric conversion unit 35 of the photoelectric conversion unit 30 into an optical signal having a wavelength that the optical transmission apparatus 100-1 can receive. The image captured by the camera 60-1 is added to the optical transmission device 100-1.
또, 예를 들어 만일 광 전송장치 100의 복수의 카메라가 각각 촬영한 복수의 영상을 광 전송장치 100-1이 모두 수신하는 도중에, 수신하는 이들 복수의 영상 중 카메라 60-2가 촬영한 영상만을 DROP 하고자 하면, 원격제어장치(COM)는 광 전송장치 100의 통신 및 제어신호 입출력부(70)를 통해서 신호 합성 및 광전변환부(30)의 광전변환부(35)의 출력 광신호의 파장 중 카메라 60-2가 촬영한 영상의 광신호의 파장을 광 전송장치 100-1이 수신할 수 없는 파장의 광신호로 변환하도록 제어함으로써 광 전송장치 100의 카메라 60-2가 촬영한 영상이 광 전송장치 100-1에서 DROP된다.For example, if the optical transmission apparatus 100-1 receives all of the plurality of images photographed by the plurality of cameras of the optical transmission apparatus 100, only the image photographed by the camera 60-2 is received. In order to DROP, the remote control device COM performs signal synthesis and control signal input / output unit 70 of the optical transmission device 100 and outputs the wavelength of the output optical signal of the photoelectric conversion unit 35 of the photoelectric conversion unit 30. Image transmission by the camera 60-2 of the optical transmission device 100 is controlled by controlling the camera 60-2 to convert the wavelength of the optical signal of the captured image into an optical signal of a wavelength that the optical transmission device 100-1 cannot receive. DROP on device 100-1.
만일, 앞에서 설명한 것과 같이 신호 합성 및 광전변환부(30)가 출력하는 광신호는 고정 파장의 광신호이고, 광 분기 결합 및 다중화부(10)가 수신하는 광신호의 파장을 선택적으로 변경할 수 있는 구성인 경우에는, 상기 ADD 기능은 원격제어장치(COM)가 광 전송장치 100-1의 통신 및 제어신호 입출력부(70)를 통해서 광 분기 결합 및 다중화부(10)가 광 전송장치 100의 카메라 60-1이 촬영한 영상을 수신하도록 제어함으로써 수행되고, 또, DROP 기능은 원격제어장치(COM)가 광 전송장치 100-1의 통신 및 제어신호 입출력부(70)를 통해서 광 분기 결합 및 다중화부(10)가 광 전송장치 100의 카메라 60-2가 촬영한 영상만을 수신할 수 없도록 제어함으로써 이루어질 수 있다.As described above, the optical signal output from the signal synthesizing and photoelectric conversion unit 30 is an optical signal having a fixed wavelength, and the wavelength of the optical signal received by the optical splitting / coupling and multiplexing unit 10 can be selectively changed. In the case of the configuration, the ADD function is a remote control device COM through the communication and control signal input and output unit 70 of the optical transmission device 100-1, the optical branch coupling and multiplexing unit 10 is the camera of the optical transmission device 100 60-1 is performed by controlling to receive the captured image, and the DROP function is performed by the remote controller COM to perform optical branch combining and multiplexing through the communication and control signal input / output unit 70 of the optical transmission device 100-1. The unit 10 may control the camera 60-2 of the optical transmission apparatus 100 to not receive only the image captured by the optical transmission apparatus 100.
이상과 같이 본 발명은 종래와 같이 광 전송장치와 광 전송장치 또는 센터장치 사이의 1 대 1의 중계방송신호의 송수신이 가능한 동시에, 복수의 광 전송장치가 네트워크를 구성하여, 복수의 광 전송장치끼리 1 대 다(多)의 중계방송신호의 송수신이 가능하게 된다.As described above, the present invention enables transmission and reception of one-to-one relay broadcast signals between the optical transmission apparatus and the optical transmission apparatus or the center apparatus as in the related art, and a plurality of optical transmission apparatuses constitute a network, and thus the plurality of optical transmission apparatuses. It is possible to transmit and receive one to many relay broadcast signals.
또, ADD/DROP 기능에 의해 1 대 다로 송수신되는 중계방송신호 중 특정 영상 또는 특정 광 전송장치 전체의 영상을 ADD하거나 또는 DROP할 수 있으므로, 중계방송신호의 전송경로를 자유롭게 선택 및 변경할 수 있다.In addition, the ADD / DROP function allows the ADD or DROP of the specific video or the entire video of the specific optical transmission apparatus among the one or more relay broadcast signals transmitted and received by one-to-many, so that the transmission path of the relay broadcast signal can be freely selected and changed.
상기 실시형태에서는 센터장치(200)에 원격제어장치(COM)가 배치되어서, 센터장치에서 원격제어기능을 수행하는 것으로 하였으나, 이에 한정되는 것은 아니며, 원격제어장치(COM)는 센터장치(200) 이외의 어느 곳에 배치되어도 좋다.In the above embodiment, the remote control device COM is disposed in the center device 200 to perform a remote control function in the center device. However, the present invention is not limited thereto, and the remote control device COM may include the center device 200. It may be arrange | positioned other than.
[부호의 설명][Description of the code]
10: 광 분기 결합 및 다중화부10: optical branch coupling and multiplexing unit
30: 신호 합성 및 광전변환부30: signal synthesis and photoelectric conversion unit
50-1, 50-2, 50-n: 방송신호 입출력부50-1, 50-2, 50-n: broadcasting signal input / output unit
60-1, 60-2, 60-n: 카메라60-1, 60-2, 60-n: camera
70: 통신 및 제어신호 입출력부70: communication and control signal input and output unit
90: 전원공급부90: power supply
100, 100-1, 100-2, 100-n: 광 전송장치100, 100-1, 100-2, 100-n: optical transmission device
200: 센터장치200: center unit
C: 복합케이블C: composite cable
COM:원격제어장치COM: Remote Control Unit

Claims (5)

  1. 방송신호의 ADD/DROP 기능을 갖는 광 전송장치로,An optical transmission device having an ADD / DROP function of a broadcast signal,
    하나 이상의 카메라가 촬영한 영상 및 음성신호를 입출력하는 방송신호 입출력부와,A broadcast signal input / output unit for inputting and outputting video and audio signals captured by one or more cameras;
    통신 및 제어신호를 입출력하는 통신 및 제어신호 입출력부와,A communication and control signal input / output unit for inputting and outputting communication and control signals,
    상기 방송신호 입출력부로부터 입력되는 화상 및 음성신호와 상기 통신 및 제어신호 입출력부로부터 입력되는 통신 및 제어신호를 합성하여 광신호로 변환하고, 광 분기 결합 및 다중화부로부터 입력되는 광신호를 전기신호로 변환하여 상기 방송신호 입출력부 및 상기 제어신호 입출력부로 각각 출력하는 신호 합성 및 광전변환부와,Image and audio signals inputted from the broadcast signal input / output unit and communication and control signals inputted from the communication and control signal input / output unit are synthesized and converted into optical signals, and optical signals inputted from the optical branch coupling and multiplexing unit are converted into electrical signals. A signal synthesizing and photoelectric conversion unit for converting into and outputting to the broadcast signal input / output unit and the control signal input / output unit, respectively;
    상기 신호 합성 및 광전변환부로부터 입력되는 광신호를 다중화하여 외부로 출력하고, 외부로부터 입력되는 광신호를 선택적으로 수신하여 상기 신호 합성 및 광전변환부로 출력하는 광 분기 결합 및 다중화부를 포함하는 광 전송장치.Optical transmission including an optical splitting and multiplexing unit for multiplexing and outputting the optical signal input from the signal synthesizing and photoelectric conversion unit, and selectively receiving the optical signal input from the external and outputting the optical signal to the signal synthesizing and photoelectric conversion unit Device.
  2. 청구항 1에 있어서,The method according to claim 1,
    상기 ADD/DROP 기능은 상기 광전변환부가 출력하는 광신호의 파장을 가변파장으로 함으로써 이루어지는 광 전송장치.And the ADD / DROP function is performed by setting the wavelength of the optical signal output by the photoelectric conversion unit to a variable wavelength.
  3. 청구항 1에 있어서,The method according to claim 1,
    상기 ADD/DROP 기능은 상기 광 분기 결합 및 다중화부가 외부로부터 수신할 수 있는 광신호의 파장을 가변파장으로 변환함으로써 이루어지는 광 전송장치.The ADD / DROP function is performed by converting a wavelength of an optical signal that can be received from the outside by the optical splitting and multiplexing unit into a variable wavelength.
  4. 청구항 2 또는 3에 있어서,The method according to claim 2 or 3,
    원격제어장치를 더 포함하며,It further comprises a remote control device,
    상기 원격제어장치가 상기 광전변환부가 출력하는 광신호의 파장을 가변파장으로 변환하거나 또는 상기 광 분기 결합 및 다중화부가 외부로부터 수신할 수 있는 광신호의 파장을 가변파장으로 변환하도록 제어하는 광 전송장치.An optical transmission device for controlling the remote control device to convert the wavelength of the optical signal output by the photoelectric conversion unit into a variable wavelength or to convert the wavelength of the optical signal that the optical splitting and multiplexing unit can receive from the outside into a variable wavelength; .
  5. 청구항 1에 있어서,The method according to claim 1,
    전원공급장치를 더 포함하며,It further includes a power supply,
    상기 전원공급장치는 현장 전원을 공급받아서 광 전송장치 내부 및 외부로 공급하고, 또, 외부의 다른 광 전송장치로부터 전원을 공급받아서 광 전송장치 내부 및 외부로 공급하는 광 전송장치.The power supply device is supplied with field power to the inside and the outside of the optical transmission device, and also receives power from another external optical transmission device to supply the internal and external optical transmission device.
PCT/KR2012/009263 2012-11-06 2012-11-06 Broadcast signal optical transport system WO2014073714A1 (en)

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US20050213992A1 (en) * 2004-03-25 2005-09-29 Piehler David M Method and apparatus for optical transmission of data
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US7614074B2 (en) * 2001-04-23 2009-11-03 Scientific-Atlanta, Inc. Burst-mode digital transmitter
US7269350B2 (en) * 2001-07-05 2007-09-11 Wave7 Optics, Inc. System and method for communicating optical signals between a data service provider and subscribers
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