KR101357182B1 - High definition serial digital interface video transmission system - Google Patents

Abstract

The present invention relates to an HD SDI image transmission device for a high speed signal process. The HD SDI transmission device is equipped with an optical signal transmission module (50) comprising: a multiplexer (51) which outputs a signal to a remote optical signal receiving module (210) through one optical fiber (C1) by multiplexing after distinguishing among an image signal, an audio signal, a data signal and an Ethernet signal, and transmits the audio signal, the data signal, and the Ethernet signal which are transmitted from the optical signal receiving module (210) to a speaker (12), a first microcomputer (52), and a first Ethernet terminal device (13) by receiving and processing the audio signal, the data signal, and the Ethernet signal through the optical fiber (C1); the first microcomputer (52) which outputs a pan-tilt drive control signal to a pan-tilt drive unit (21); a first SerDes (53) which processes an input/output digital signal at high speed by outputting a parallel signal that is inputted from the multiplexer (51) to a first optical converting unit (54) after converting the parallel signal into a serial signal and outputting the serial signal that is inputted from the first optical converting unit (54) to the multiplexer (51) after converting the serial signal into the parallel signal; the first optical converting unit (54) which sends a signal serialized from the first SerDes (53) to the optical signal receiving module (210) through the optical fiber (C1) after receiving the signal and converting into an optical signal, and converts an optical signal received from the remote optical signal receiving module (210) through the optical fiber (C1) into an electrical signal. The present invention thereby has the merit of being able to process signals by distinguishing among an image signal, an audio signal, a data signal, and an Ethernet signal. [Reference numerals] (11) CCTV camera; (12) Speaker; (13) First Ethernet terminal device; (21) Pan-tilt drive unit; (51) Multiplexer; (52) First microcomputer; (53) First SerDes; (54) First optical converting unit; (55) First Ethernet connecting unit

Description

High Speed Signal Processing HD SDI Video Transmission System {High Definition Serial Digital Interface Video Transmission System}

The present invention relates to a high speed signal processing HD SDI video transmission apparatus, and more particularly, to an apparatus or a device capable of distinguishing and processing a video signal, an audio signal, a data signal, and an Ethernet signal, and processing each of the distinguished signals. The present invention relates to a high-speed signal processing HD SDI video transmission apparatus that is capable of transmission control and is suitable for preventing optical loss from occurring.

Recently, due to social unrest factors such as crime and demands for the importance of safety measures, the activation of security market is increasing. As a part of this, the surveillance system such as Closed Circuit Television (CCTV) is being used to prevent crime or to arrest criminals using it, so the importance of CCTV system in the security market is increasing. The most important thing in the CCTV system is the ability to identify objects regardless of the day or night, and accordingly, a high resolution function is required to accurately identify the monitored object.

And CCTV cameras are changing from SD (720 × 486, NTSC) resolution to HD (1920 × 1080, HD 1080p) or MegaPixel level. It is demanding change. In particular, in order to process a large amount of information required in high-definition, image compression technology was applied to use the IP network instead of coaxial cable, which led to the rapid growth of the IP camera market, which was sluggish. However, the change from conventional coaxial cable to network systems required more cost and technology for design and operation, and it was a burden for those who operated the system on a small scale. At this time, it is the HD-SDI (High Definition Serial Digital Interface) transmission method.

This HD-SDI transmission method refers to a method of converting a digital video signal into a serial signal without compression and transmitting it through a coaxial cable or an optical cable. HD-SDI has been standardized by the American Film Television Engineers Association (SMPTE), which describes all aspects of electrical interfaces, data formats, auxiliary data and video formats.

As a technique using the HD SDI transmission system as described above, a compressed image transmission system using SDI and a method thereof according to Korean Patent Publication No. 10-2011-0133854 (published date: December 14, 2011) are known.

The technique disclosed in Korean Patent Application Laid-open No. 10-2011-0133854 discloses that when the video data of the surveillance camera is transmitted using SDI, the compressed video data is included in an ancillary data packet to be transmitted simultaneously with real-time monitoring in the system. The present invention provides a compressed video delivery system and method using SDI capable of storing a compressed bitstream without a separate video compression engine, and thus detailed description thereof will be omitted.

However, the technique disclosed in Korean Patent Laid-Open Publication No. 10-2011-0133854 distinguishes between heterogeneous signals, for example, video signals, audio signals, data signals, and Ethernet signals, and converts each of these signals into corresponding unique devices such as video devices, There was a technical limitation because it could not provide the technology to input and output to audio equipment, Ethernet terminal device, etc.

On the other hand, when driving a general CCTV camera, a slip ring is adopted in the video transmission device to smoothly rotate the CCTV camera without twisting the control line, power line or optical cable.

In addition, Korean Patent No. 10-1039121 (name: video cable connection device used in the image transmission device) is disclosed in the slip ring technology of the image transmission device designed to transmit a high-quality video signal without distortion.

"Image cable connection device used in the image transmission device" according to the above Patent No. 10-1039121 is adopted by adopting a method of infinitely rotating the video signal cable using the connector 150 and the optical coupling lens 155 The rotation block that pan-tilts the high-definition camera mounted on the transmission device enables infinite rotation.

However, the "video cable connection device used for the image transmission apparatus" according to the Patent No. 10-1039121 has the following problems.

First of all, since the above technology adopts the optical connector method, the alignment of the optical cable cores at the top and the bottom thereof is very poor during rotation, and as a result, the eccentricity of the optical cable cores occurs. There was a problem that a large value of optical loss occurs. Larger light losses lead to poor performance, of course.

In addition, the optical coupling lens had to be used to connect two optical cables below and above to transmit the image transmitted from the camera module. When the optical coupling lens was used, friction between the optical cable and the optical coupling lens occurred. This friction produces very fine powder.

Only one fine powder caused by the optical coupling lens friction leads to a fatal problem that a very large light loss occurs.

In addition, in the conventional case, since the optical cable system is adopted, assembly workability is not good, and there is a problem that optical transmission performance is deteriorated.

The present invention was created to solve the above problems of the prior art, and the high speed signal processing HD SDI video transmission apparatus according to the present invention,

First, in the high speed signal processing HD SDI video optical transmission system, video signals, audio signals, data signals, and Ethernet signals can be distinguished and processed, and each of the distinguished signals can be controlled by an apparatus or device capable of processing the corresponding signals. To ensure that

Second, to output only the video selected by the user as a specific monitor among the images captured by a plurality of CCTV cameras to selectively monitor a plurality of images with a small number of monitors to improve the user use environment,

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Third, a capillary for holding the core of the optical fiber and a parallel beam lens are attached to the capillary, and the optical signal can be transmitted through a pair of parallel beam lenses, thereby outputting 9 um emitted from the core of the optical fiber. It is possible to enlarge the optical signal of 600 um and to make the enlarged beam into a parallel beam, and thus to enlarge the light emitted from the core and to make the parallel beam at the same time, and then to transmit it to the second optical fiber so that no optical loss occurs. (The actual light loss target value is -1 dB, more preferably, ultra low loss of -0.5 dB or less),

Fourth, the adhesion of the parallel beam lens and the capillary is made of an epoxy resin having the same refractive index as that of the optical fiber core so that the light emitted from the end of the optical fiber core can be incident on the parallel beam lens without spreading.

Fifth, the light is transmitted by a pair of parallel beam lenses, but an air gap is formed between the pair of parallel beam lenses so that they are spaced apart from each other. So that no friction occurs and as a result there is no light loss due to friction,

Sixth, the lens holder is provided with a lens and the bearing of the same size and shape is mounted on the outer circumferential surface of the lens holder, and then the lens aligning tube is fitted to the outer ring of the bearing so that the beam emitted from the core is directly lost to the core. To ensure perfect alignment between the fiber optic cores

Seventh, by providing a disk spring between the spindle shaft and the bearing of the first lens holder, to minimize the longitudinal play of the bearing to hold the spindle shaft eccentricity,

Eighth, the first capillary and the first parallel beam lens are inclined at an angle of 8 degrees while simultaneously facing each other, and the second parallel beam lens and the second capillary are also at an angle of 8 degrees at the same time. The present invention provides a high-speed signal processing HD SDI video transmission apparatus suitable for minimizing reflection of transmitted light to prevent reflection loss.

High speed signal processing HD SDI video transmission apparatus according to the present invention for achieving the above object,
A CCTV camera provided inside the camera housing and capturing an image;
A speaker provided inside the camera housing and outputting an audio signal as a sound;
The video signal input from the plurality of CCTV cameras, the audio signal output to the speaker and the pan tilt driving control signal for controlling the pan tilt driving of the CCTV camera, the external first Ethernet terminal device and the Ethernet network Ethernet signal input and output through the multiplexing and multiplexing to output to the optical signal receiving module of the remote output to the first optical cable and the audio signal and data signal transmitted from the optical signal receiving module of the remote pantilt drive control signal and Ethernet signal And a multiplexer for receiving and processing the signal through a first optical cable and transmitting the same to a speaker, a first microcomputer, and a first Ethernet terminal device, and to output a pan tilt driving control signal for driving the pan tilt of the CCTV camera to the pan tilt driving unit. 1 microcomputer and the parallel signal input from the multiplexer is converted into a serial signal to the first optical conversion unit A first source (SerDes) for converting a serial signal input from the first optical conversion unit into a parallel signal and outputting the same to a multiplexer to process input / output digital signals at high speed, and a serialized signal from the first source. Optical signal transmission module comprising a first optical conversion unit for receiving and converting the optical signal to the optical signal receiving module 210 through the optical cable and converting the optical signal received from the remote optical signal receiving module through the optical cable into an electrical signal ;
A camera housing including the camera, a speaker, and an optical signal transmission module therein;
A rotating module having a pan tilt driving unit configured to pan and tilt the camera housing therein, a supporting module supporting the rotating module, and a first hollow hole penetrating in a longitudinal direction in a circular tube shape; When the fixing ring and the second hollow hole formed in the longitudinal direction is formed and is formed of a rotating ring which is rotatably coupled coaxially to the fixed ring and the rotating ring is fixedly coupled to the rotating module when the rotating module rotates indefinitely. Rotating together and the fixing ring is fixed to the support module is configured to include a power supply cable and a control ring connected to the CCTV camera when the camera housing is rotated so that the camera housing can be rotated without twisting It is characterized by.

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The high speed signal processing HD SDI video transmission apparatus of the present invention, the slip ring,

An insert for fixing the first optical fiber inserted into the first hollow hole on the upper side of the rotating ring and fastened to the rotating ring by a fastening screw to rotate in accordance with the rotation of the rotating ring and connected to the first optical conversion unit; 1 A spindle shaft having a through hole formed in a longitudinal direction and a cylindrical shape having a bottom surface, the cylindrical inlet side of which is fixed to the spindle shaft by being fitted to the spindle shaft and rotated together with the rotation of the spindle shaft. The first lens holder through which the first lens mounting hole is formed, and is inserted into and fixed to the first through hole of the spindle shaft, one end of which is connected to the first light conversion unit, and the other end of the first lens holder is in the hollow portion of the first lens holder. A first optical fiber terminated in the first optical fiber and a first insertion hole penetrating in the longitudinal direction and interpolating the core of the first optical fiber to the first insertion hole Turn on the first capillary provided at the end of the core of the first optical fiber and the first lens mounting hole of the first lens holder to be coaxial with the core of the first optical fiber. At the same time, the first parallel beam lens and the first parallel beam lens and the first capillary, which diffuse light emitted from the core and make parallel light at the end, are bonded to each other by adhesion and are emitted from the core of the first optical fiber. A first adhesive part having the same refractive index as that of the first optical fiber core, and the first hollow hole at the lower side of the rotating ring facing the spindle shaft such that the light is incident on the first parallel beam lens without being diffused; The second through-hole fastened to the fixing ring to receive the optical signal of the first optical fiber and to transmit the second optical fiber to remotely transmit the optical signal of the first optical fiber in the longitudinal direction A second lens holder having a fixed shaft formed therein, a cylindrical shape having an upper surface, the cylindrical inlet side of which is fixed to the fixed shaft by being fixed to the fixed shaft, and having a second lens mounting hole formed therethrough on the upper surface thereof; A second optical fiber disposed in the hollow portion of the second lens holder and inserted into and fixed to the second through hole of the fixed shaft; and a second insertion hole penetrated in the longitudinal direction, the core of the second optical fiber Intercalating the second insertion hole into a second capillary provided at the end of the second optical fiber and the core of the second optical fiber, and simultaneously forming an air gap with the first parallel beam lens. 1 is mounted in the second lens mounting hole of the second lens holder so as to be spaced apart from the parallel beam lens, and receives the parallel light emitted from the first parallel beam lens, and receives the received light into the second light beam. A second parallel beam lens that focuses and transfers the light to the core of the second optical fiber, and the second parallel beam lens and the second capillary are bonded to each other by adhesion, and are emitted from the second parallel beam lens. A second adhesive part having the same refractive index as that of the second optical fiber core, the first bearing mounted on an outer circumferential surface of the first lens holder such that the second optical fiber is incident on the core of the second optical fiber in a state where the light is not diffused; The second bearing mounted on the outer circumferential surface of the second lens holder in the same size and shape as the first bearing, and the inner circumferential surface of the rotary ring in the hollow hole of the rotary ring as a tubular shape having a third through hole formed in the longitudinal direction therein; Lens erlings are provided on the outer races of the first bearing and the second bearing while maintaining the gap, and to hold the first parallel beam lens and the second parallel beam lens eccentric. It is characterized in that the line pipe is further included.

In the optical slip ring of the high speed signal processing HD SDI video transmission apparatus of the present invention, the first parallel beam lens has a length of λ / 4 wavelength of an optical signal wavelength λ propagating through the first optical fiber. The length of the second parallel beam lens is characterized in that the length of the λ / 4 wavelength of the optical signal wavelength λ propagating the second optical fiber.

In the optical slip ring of the high speed signal processing HD SDI image transmission apparatus of the present invention, the first capillary and the first parallel beam lens are formed to be inclined at an angle of 8 degrees so as to face each other, and the second parallel beam lens The second capillary is characterized in that the surfaces facing each other are inclined 8 degrees.

The optical slip ring of the high-speed signal processing HD SDI video transmission apparatus of the present invention is characterized in that the first and second bonding portions are ultraviolet curable epoxy resins having the same refractive index as the first and second optical fiber cores.
The high-speed signal processing HD SDI video transmission apparatus according to the present invention is characterized in that the multiplexer is provided with a signal discriminating unit for discriminating and discriminating video signals, audio signals, data signals, and Ethernet signals.
The high speed signal processing HD SDI video transmission apparatus according to the present invention distinguishes the video signal, the audio signal, the data signal, and the Ethernet signal by the signal discrimination unit provided with the multiplex therein, and controls the video signal through a CCTV camera. The audio signal is input / output controlled by a speaker, and the pan tilt drive control signal, which is a data signal, is output controlled by the pan tilt driver through the first microcomputer, and the Ethernet signal is controlled by the first Ethernet terminal device through the first Ethernet connection unit. Characterized in that.

A high speed signal processing HD SDI video transmission / reception system according to the present invention for achieving the above object, the high speed signal processing HD SDI video transmission apparatus; And a high speed signal processing HD SDI video receiving apparatus, wherein the high speed signal processing HD SDI video receiving apparatus comprises an input device for inputting a data command for driving a pan tilt of the CCTV camera, and an image captured by the CCTV camera. A monitor for displaying a signal, a microphone for converting an input sound into an electrical signal, and outputting the distinction between the video signal and the Ethernet signal received through the one optical cable, respectively, and transmitting the image signal and the Ethernet signal to the second Ethernet terminal device and the monitor; And an optical signal receiving module for distinguishing the command data input from the device and the audio signal input from the microphone and the audio signal input from the microphone, and transmitting them to the optical signal transmission module through one optical cable. It is done.

In the high-speed signal processing HD SDI video transmitting and receiving system of the present invention, the optical signal receiving module converts the optical signal received from the optical signal transmission module into an electrical signal and outputs the electrical signal to the second source, and receives the received signal from the second source. A second optical converter converting the serialized signal into an optical signal and outputting the serial signal to the optical signal transmission module; and converting the parallel signal input from the demultiplexer into a serial signal and outputting the serial signal to the second optical converter; The second source and the serial signal input from the optical conversion unit to parallel to the demultiplexer, and the video signal and the Ethernet signal transmitted from the optical signal transmission module to distinguish and demultiplexed to the monitor and the second Ethernet terminal device, respectively, A demultiplexer for dividing a signal input from a microphone and an input device and outputting the parallel signal to the second source; Hayeoseo a fan-tilt control signal based on the command data received from the group characterized in that comprises a second microcomputer for outputting a de-multiplexer.

In the present invention, the high-speed signal processing HD SDI video transmitting / receiving system includes a signal discriminating unit for discriminating and discriminating an input / output video signal, an audio signal, a data signal, and an Ethernet signal. Based on the distinction between the data signal and the Ethernet signal, the video signal is input / output controlled by the CCTV camera and the monitor, the audio signal is controlled by the speaker and the micro input / output, and the data signal is controlled by the first and second microcomputers. The signal is characterized in that the input and output control to the first and second Ethernet terminal through the first and second Ethernet connection.

In the present invention, the high speed signal processing HD SDI image transmission / reception system of the present invention includes, on the input device, which CCTV camera the user will monitor among the images photographed by a plurality of CCTV cameras, and on which monitor to display the image to be monitored. And an image selection input unit capable of selecting a signal, and the first microcomputer receives the camera selection key input from the image selection input unit of the input device and monitors the image selection signal with the multiplexer based on the received camera selection key signal. Outputs a multiplexer to the multiplexer, wherein the multiplexer outputs only the video signal captured by the CCTV camera corresponding to the monitoring image selection signal received from the plurality of CCTV cameras based on the monitoring image selection signal received from the first microcomputer. Demultiplexer of optical signal receiving module The second microcomputer of the optical signal receiving module receives a monitor selection key input from an image selection input unit of the input device and outputs a monitor selection signal to the demultiplexer based on the received monitor selection key signal. The demultiplexer may switch control of an image signal received from the multiplexer to the corresponding monitor based on the monitor selection signal received from the second microcomputer.

The high speed signal processing HD SDI video transmission apparatus of the present invention having the above configuration has the following effects.

First, when transmitting and receiving a high-speed signal processing HD SDI video as an optical signal, it is possible to distinguish and process the video signal, audio signal, data signal, and Ethernet signal, and to process the corresponding signal to an apparatus or a device capable of processing the corresponding signal. There is an effect to control the transmission.

Second, it outputs only the image selected by the user as a specific monitor among the images captured by a plurality of CCTV cameras so that a plurality of images can be selectively monitored even with a small number of monitors. have.

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Third, by attaching the parallel beam lens to the capillary holding the core of the optical fiber and transmitting the optical signal through a pair of parallel beam lens, the optical signal of 9 um emitted from the core of the optical fiber is 600 um It is effective in minimizing the optical loss by transferring the enlarged parallel beam to the second optical fiber. The optical transmission system that does not occur is practically impossible, and according to the embodiment of the present invention, a very remarkable effect of obtaining a value of -1 dB, more preferably -0.5 dB or less occurs (see FIG. 5).

Fourth, since the adhesion of the parallel beam lens and the capillary is made of an epoxy resin having the same refractive index as that of the optical fiber core, the light emitted from the end of the optical fiber core can be incident on the parallel beam lens without spreading. .

Fifth, the light is transmitted by a pair of parallel beam lenses, but an air gap is formed between the pair of parallel beam lenses to be spaced apart from each other. Friction does not occur, and as a result, there is an effect that there is no light loss due to friction.

Sixth, the lens holder is provided with a lens and the bearing of the same size and shape is mounted on the outer circumferential surface of the lens holder, and then the lens aligning tube is fitted to the outer ring of the bearing so that the beam emitted from the core is directly lost to the core. There is an effect that the alignment between the optical fiber cores can be completely performed to be delivered.

Seventh, by providing a disk spring between the spindle shaft and the bearing of the first lens holder, it is possible to minimize the longitudinal play of the bearing to hold the spindle shaft eccentric.

Eighth, the first capillary and the first parallel beam lens are inclined 8 degrees so that the surfaces facing each other are inclined, and the second parallel beam lens and the second capillary are inclined 8 degrees in the opposite directions. By doing so, there is an effect of minimizing reflection so that reflection loss does not occur.

1 is an external perspective view of a high-speed signal processing HD SDI video transmission apparatus according to an embodiment of the present invention.
2 is a block diagram of a high-speed signal processing HD SDI video transmission apparatus according to an embodiment of the present invention.
3 is a detailed block diagram of an optical signal transmission module of a high speed signal processing HD SDI image transmission device according to an embodiment of the present invention.
4 is a block diagram of a high-speed signal processing HD SDI video receiving apparatus according to an embodiment of the present invention.
5 is a cross-sectional view and an enlarged view of an essential part of an optical slip ring of a high-speed signal processing HD SDI video transmission apparatus according to an embodiment of the present invention.
FIG. 6 is a detailed structural diagram of an optical slip ring of a high speed signal processing HD SDI video transmitting apparatus according to an embodiment of the present invention.
7 is an exploded perspective view illustrating main parts of an optical slip ring of a high speed signal processing HD SDI video transmission apparatus according to an embodiment of the present invention.
FIG. 8 is a photograph of a screen value of a measuring instrument for measuring an optical loss value when the optical slip ring of the high speed signal processing HD SDI image transmitting apparatus according to an embodiment of the present invention is adopted.

Next, the present invention will be described in detail with reference to the accompanying drawings of a preferred embodiment of the present invention, a high speed signal processing HD SDI video transmission apparatus and a high speed signal processing HD SDI video transmission / reception system including the HD SDI video transmission apparatus.
High-speed signal processing HD SDI video transmission device 1 according to an embodiment of the present invention, the optical signal transmission module 50, CCTV camera 11, the speaker 12, the camera housing 10 and the rotation module 20 ) And the support module 30 and the slip ring 100 is configured.
The optical signal transmission module 50 includes a multiplexer 51, a first microcomputer 52, a first Serdes 53, and a first optical converter 54.

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The multiplexer 51 is configured to control video tilt input from a plurality of CCTV cameras 11, audio signals output from a speaker 12, and pan tilt driving of the CCTV camera 11. In order to transmit the optical signal reception module 210 to the optical signal receiving module 210 by multiplexing and multiplexing the pan tilt driving control signal and the Ethernet signal input / output through the external first Ethernet terminal device 13 and the Ethernet network. C12) and the speaker 12 by receiving and processing the audio signal and the pantilt drive control signal and the Ethernet signal which are transmitted from the optical signal receiving module 210 through one optical fiber C1. The first microcomputer 52 and the first Ethernet terminal 13 are configured to be transmitted.

The first microcomputer 52 is configured to output a pan tilt drive control signal for driving the pan tilt of the CCTV camera 11 to the pan tilt driver 21.

The first Serdes 53 convert the parallel signal input from the multiplexer 51 into a serial signal, output the serial signal to the first optical converter 54, and the serial input from the first optical converter 54. It converts a signal into a parallel signal and outputs it to the multiplexer 51 to process the input / output digital signal at high speed.

The first optical conversion unit 54 receives the serialized signal from the first source 53, converts the serialized signal into an optical signal, and sends the optical signal to the optical signal receiving module 210 through the optical fiber C1. The optical signal received from the receiving module 210 through the optical fiber C1 is converted into an electrical signal.

The first Ethernet connection unit 150 is an interface for inputting and outputting data with the Ethernet network.

The multiplexer 51 is provided with a signal discrimination unit for discriminating and discriminating video signals, audio signals, data signals, and Ethernet signals.

The multiplex 51 distinguishes the video signal, the audio signal, the data signal and the Ethernet signal by the signal discriminating unit provided therein, and controls the video signal to the input / output signal by the CCTV camera 11 and the audio signal to the speaker 12. I / O control, and the pan tilt drive control signal, which is a data signal, is output controlled to the pan tilt driver 21 through the first microcomputer 52, and the Ethernet signal is transmitted through the first Ethernet connection unit 55 to the first Ethernet terminal. Input and output control with the device 13 is characterized.

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The CCTV cameras 11 are provided in plural and each CCTV camera 11 is provided inside the camera housing 10, and captures a surveillance target area and sends it to the optical signal transmission module 50 as an analog video signal.

The speaker 12 is provided inside the camera housing 10 and outputs an audio signal, which is voice information input through a microphone 222 provided in a control room (not shown), to the monitoring target area.

The camera housing 10 is a mechanical configuration for providing a CCTV camera 11, a speaker 12 and an optical signal transmission module 50 therein.

The rotation module 20 is configured to be provided with a pan tilt driver 21 for rotating the pan and tilt of the camera housing 10 therein.

The support module 30 is configured to support the rotation module 20.

The slip ring 100 has a fixed ring 110 formed with a first hollow hole 110a penetrating in the longitudinal direction in a circular tube shape, and a second hollow hole 120a penetrating in the longitudinal direction. It consists of a rotary ring 120 is rotatably coupled by the bearing (115a, 115b) coaxially to the fixing ring 110, the rotary ring 120 is fixedly coupled to the rotation module 20 is rotated module ( When the 20 rotates indefinitely and the fixing ring 110 is fixedly coupled to the support module 30, the general cable (Ka, connected to the camera housing 10 when the camera housing 10 is rotated) Kb) (power supply cable and control signal cable) is a configuration that allows the camera housing 10 to rotate without twisting.

The optical slip ring 100 of the high speed signal processing HD SDI image transmission device 1 according to an embodiment of the present invention rotates indefinitely without twisting the optical fiber in the second hollow hole 120a of the rotation ring 120. Although it is configured to be possible, the optical signal emitted from the optical fiber is transmitted by the lens, rather than the conventional cable connection method, and is specifically called an "optical slip ring" among slip rings.

In addition, the term core (C1a, C2a) of the description of the present specification is a concept including a cladding (cladding) for the total reflection induction.

The optical slip ring 100 of the high speed signal processing HD SDI video transmission device 1 according to an embodiment of the present invention includes a spindle shaft 131, a first lens holder 141, and a first optical fiber C1. ), A first capillary 151, a first parallel beam lens 161, a first adhesive part 165, a fixed shaft 135, a second lens holder 145, and a second light Fiber C2, second capillary 155, second parallel beam lens 163, second bonding portion 167, first bearing 171, second bearing 172 and lens alignment It characterized in that it comprises a tube (180).

The spindle shaft 131 is inserted into the first hollow hole (110a) on the upper side of the rotary ring 120 and is fastened to the rotary ring 120 by a fastening screw (P1) to rotate in accordance with the rotation of the rotary ring 120 The first through hole 131a is formed in the longitudinal direction to insert and fix the first optical fiber C1 connected to the first light conversion unit 54.

The first lens holder 141 is a cylindrical shape having a bottom surface 141a and is fixed to the spindle shaft 131 by being inserted into the cylindrical inlet side, that is, the upper end of the cylindrical shaft 131 by the spindle shaft 131. Rotate together according to the rotation, and the first lens mounting hole (141a ') is formed through the bottom surface (141a).

The first optical fiber C1 is provided such that one end thereof is connected to the first light conversion unit 54 and the other end thereof is terminated in the hollow part S1 of the first lens holder 141.

The first capillary 151 is provided at the end of the core C1a of the first optical fiber C1. Specifically, the first insertion hole 151a is formed to penetrate in the longitudinal direction so that the first optical The core C1a of the fiber C1 is interpolated into the first insertion hole 151a and extrapolated to the core C1a of the first optical fiber C1. As a result, the hollow of the first lens holder 141 is It is located in the part S1.

The first parallel beam lens 161 is fitted to the first lens mounting hole 141a 'of the first lens holder 141 so as to be coaxial with the core C1a of the first optical fiber C1. The light irradiated from the core C1a of the optical fiber C1 is enlarged, and at the end, the light is made into parallel light.

For example, in one embodiment of the present invention, the diameter of the core is usually 9 um, and the light of 9 um, which is the same as the core diameter, is enlarged to 600 um.

The first adhesive part 165 adhesively couples the first parallel beam lens 161 and the first capillary 151 by adhesion, and emits light from the core C1a of the first optical fiber C1. It has the same refractive index as the first optical fiber core (C1a) so that it can be incident to the first parallel beam lens 161 without being spread.

The first adhesive part 165 may be formed of an ultraviolet curable epoxy resin having the same refractive index as that of the first optical fiber core C1a.

Accordingly, the light emitted from the core C1a of the first optical fiber C1 may be incident on the first parallel beam lens without being spread.

The fixed shaft 135 is positioned in the first hollow hole 110a at the lower side of the rotary ring 120 facing the spindle shaft 131 (specifically, the fixed ring cover 112). Is fastened by the fastening screw (P2) in the], and receives the optical signal of the first optical fiber (C1) and transmits it to a remote light transmission equipment (not shown) or manager PC (not shown) The second through hole 135a for inserting and fixing the two optical fibers C2 is formed in the longitudinal direction.

That is, the fixed shaft 135 is fastened to the fixed ring cover 112, the fixed ring cover 112 is fastened to the fixed ring 110 by a fastening screw (not shown), as a result of which the fixed shaft 135 It is fastened to the fixing ring (110).

The second lens holder 145 is a cylindrical shape having an upper surface 145a, and an inlet, that is, a lower end, of the cylindrical surface is fixed to the fixed shaft 135 by being fixed to the fixed shaft 135, and an upper surface 145a. The second lens mounting hole 145a 'is formed therethrough.

One end of the second optical fiber C2 is located in the hollow portion S2 of the second lens holder 145, and the other end thereof is connected to a remote light transmission device (not shown) or a manager PC (not shown). It is interpolated in the second through hole 135a of the shaft 135.

The second capillary 155 is provided at one end of the core C2a of the second optical fiber C2, and the second insertion hole 155a is formed to penetrate in the longitudinal direction, so that the second optical fiber C2 is formed. The core C2a of one end is inserted into the second insertion hole 155a to hold the core C2a of the second optical fiber C2.

The second parallel beam lens 163 is coaxial with the core C2a of the second optical fiber C2 and simultaneously forms the first parallel beam lens 161 and the air gap G1. 161 is fitted into the second lens mounting hole 145a 'of the second lens holder 145 to receive the parallel light emitted from the first parallel beam lens 161 and receives the received light as the second light. The light is condensed so as to be transmitted to the fiber C2 without loss and optically transmitted to the core C2a of the second optical fiber C2.

The second adhesive part 167 bonds the second parallel beam lens 163 and the second capillary 155 to each other by adhesion, and does not spread light emitted from the second parallel beam lens 163. It has the same refractive index as the second optical fiber core C2a to be incident on the core C2a of the second optical fiber C2.

The second adhesive part 167 is preferably an ultraviolet curable epoxy resin having the same refractive index as that of the second optical fiber core C2a, similarly to the first adhesive part.

The first bearing 171 is mounted on the outer circumferential surface of the first lens holder 141 so that the second lens holder 145 is rotatable with the spindle shaft 131, but the lens alignment tube 180 is fixed without rotation. Keep it intact.

The second bearing 172 has the same size and shape as the first bearing 171, and is mounted on the outer circumferential surface of the second lens holder 145 by adopting such a configuration so that the second bearing 172 is formed in the lens alignment tube 180. The second lens holder 145 provided through the two bearings 172 is exactly aligned with the first lens holder 141.

The lens alignment tube 180 is a tubular shape having a third through hole 180a formed in a longitudinal direction therein, and the inner circumferential surface of the rotating ring 120 in the second hollow hole 120a of the rotating ring 120. It is provided with an interference fit on the outer rings of the first bearing 171 and the second bearing 172 while maintaining the gap, and for catching the eccentricity of the first parallel beam lens 161 and the second parallel beam lens 163. Configuration.

In the optical slip ring 100 of the high speed signal processing HD SDI image transmitting apparatus 1 according to the exemplary embodiment of the present invention, the length of the first parallel beam lens 161 is defined by the first optical fiber C1. It is characterized in that it is formed at a λ / 4 wavelength length of the wavelength λ length of the propagating light.

According to this, the 9 um light emitted from the core C1a of the first optical fiber C1 is enlarged to 600 um, and at the end, there is an advantage of making parallel light.

Similarly, in the optical slip ring 100 of the high speed signal processing HD SDI image transmission device 1 according to an embodiment of the present invention, the length of the second parallel beam lens 165 is equal to the length of the second optical fiber C2. It is characterized in that it is formed at a λ / 4 wavelength length of the wavelength λ length of the propagating light.

According to this, there is an advantage in that the parallel light emitted from the first parallel beam lens 161 can be received and the received light can be transmitted to the second optical fiber C2 without loss.

In the optical slip ring 100 of the high speed signal processing HD SDI image transmission device 1 according to an embodiment of the present invention, a first mounting flange 131b protrudes radially outward from the spindle shaft 131. And a first mounting flange 131b is externally inserted into the first hollow hole 110a, and the lower surface of the first mounting flange 131b has a dolce 131c downward (with a fixed shaft 135). Direction] is characterized in that it is formed.

This facilitates the mounting of the spindle shaft 131 to the rotary ring 120 and facilitates the mounting of the disc spring 190.

In the optical slip ring 100 of the high speed signal processing HD SDI image transmission device 1 according to an embodiment of the present invention, a central through hole 190a formed through the center portion of the optical slip ring 100 is extrapolated to the dolce 131c. 1 is interposed between the lens holder 141 and the lens alignment tube 180 and the spindle shaft 131 to act as an elastic force on the first bearing 171 and the lens alignment tube 180 and the spindle shaft 131 The disk spring 190 for holding the eccentricity of the shaft 131 is further characterized in that it is configured.

By adopting the disk spring 190 to prevent longitudinal play of the first bearing 191 to catch the eccentricity of the spindle shaft 131 as a result can prevent the alignment error between the core (C1a, C2a) as a whole There is an advantage to that.

In the optical slip ring 100 of the high speed signal processing HD SDI image transmission device 1 according to an embodiment of the present invention, as shown in FIG. 6, the first capillary 151 is first parallel with the first capillary 151. The beam lenses 161 are formed to face each other side by side, and the front end surface of the first capillary 151 facing the first parallel beam lens 161 is in a horizontal direction perpendicular to the longitudinal direction. The tip end surface of the first parallel beam lens 161 facing the first capillary 151 is inclined upwardly at an inclination angle θ1, and is inclined upward at a horizontal direction perpendicular to the longitudinal direction. The inclination angle θ1 of the first capillary 151 and the inclination angle θ2 of the first parallel beam lens 161 are both 8 degrees.

Similarly, as shown in FIG. 6, the surfaces of the second parallel beam lens 163 and the second capillary 155 are formed to face each other and face the second parallel beam lens 163. The front end surface of the second capillary 155 is inclined upwardly at an inclination angle θ4 with respect to the horizontal direction perpendicular to the longitudinal direction, and faces the second parallel beam lens facing the second capillary 155. The tip end surface of 163 is inclined upwardly at an inclination angle θ3 with respect to the horizontal direction perpendicular to the longitudinal direction, and the inclination angle θ4 of the second capillary 155 and the second parallel beam lens 163. Are all 8 degrees.

As described above, since the inclination angles θ1, θ2, θ3, and θ4 are all formed at 8 degrees, there is an advantage of preventing light loss due to reflection by blocking the loss due to reflection.

The fixing shaft 135 has a second mounting flange 135b protruding outward in the radial direction, thereby facilitating mounting on the cover 112.

Reference numeral 111 is a mounting portion 111 for mounting the fixing ring 110 to the support module 30.

On the other hand, although not shown, it is known that there is provided an electrical terminal that can maintain the contact between the fixed ring 110 and the rotary ring 120, even if rotated.

Next, a configuration of a high speed signal processing HD SDI video transmission / reception system according to an embodiment of the present invention will be described.

The high speed signal processing HD SDI video transmitting / receiving system according to an embodiment of the present invention comprises the high speed signal processing HD SDI video transmitting apparatus 1 and the high speed signal processing HD SDI video receiving apparatus 2 described later.

In the high speed signal processing HD SDI video transmitting / receiving system according to an embodiment of the present invention, the high speed signal processing HD SDI video receiving apparatus 2 includes an input device 224, a monitor 221, a microphone 222, and an optical signal. Characterized in that the receiving module 210.

The input device 224 is provided in a control center (not shown) and is a user interface for inputting a command for driving a pan tilt of the CCTV camera 11.

The microphone 222 is configured for the administrator of the control center to input a voice.

The monitor 221 is provided in the control center is a display device for displaying the image taken by the CCTV camera (11).

The optical signal receiving module 210 distinguishes the video signal and the Ethernet signal received through one optical fiber C2 and transmits them to the second Ethernet terminal device 223 and the monitor 221 or the input device ( The command data input from 224 and the Ethernet signal input from the second Ethernet terminal device and the audio signal input from the microphone 222 are distinguished from each other, and the optical signal transmission module 50 is connected through one optical fiber C2. It is a configuration to transmit.

In the high speed signal processing HD SDI video transmission / reception system according to an embodiment of the present invention, the optical signal receiving module 210 may include a second optical converter 214, a second third 213, and a demultiplexer 211. And a second microcomputer 212.

The second optical conversion unit 214 converts the optical signal received from the optical signal transmission module 50 into an electrical signal and outputs the electrical signal to the second source 213, and serialization received from the second source 213. The photoelectric / electric photoelectric device converts the converted signal into an optical signal and outputs the optical signal to the optical signal transmission module 50 through the optical fiber C2.

The second source 213 converts the parallel signal input from the demultiplexer 211 into a serial signal and outputs the serial signal to the second optical converter 214, and the serial input from the second optical converter 214. The signal is paralleled and sent to the demultiplexer 211.

The demultiplexer 211 distinguishes the video signal and the Ethernet signal transmitted from the optical signal transmission module 50 and demultiplexes the image signal and the Ethernet signal to the monitor 221 and the second Ethernet terminal device 223, respectively, and the microphone 222 and the input. A signal input from the device 224 is divided and output to the second source 213 as a parallel signal.

The second microcomputer 212 generates a pan tilt driving control signal based on a data command input from the input device 224, and outputs the same to the demultiplexer 211.

The second Ethernet connection unit 250 is an interface for inputting and outputting data with the Ethernet network.

In the high-speed signal processing HD SDI video transmission and reception system according to an embodiment of the present invention, the demultiplexer 211 is provided with a signal discrimination unit for discriminating and discriminating video signals, audio signals, data signals, and Ethernet signals inputted and outputted. Based on the distinction between the video signal, the audio signal, the data signal and the Ethernet signal by the signal discriminating unit, the video signal is input / output controlled by the CCTV camera 11 and the monitor 221, and the audio signal is the speaker 12 and the microphone ( 222, the input and output control, the data signal is output control to the first microcomputer 52 and the second microcomputer 212, the Ethernet signal is the first and second Ethernet terminals through the first and second Ethernet connection (55, 215) Input / output control with the devices 13, 223 is characterized.

Meanwhile, the multiplexer 51 and the demultiplexer 211 may include a switching unit (not shown), a streaming control unit (not shown), a PLL circuit unit (not shown), The clock generation unit (not shown) and the buffer (not shown) are provided as is known to those skilled in the art before the present application.

In the high-speed signal processing HD SDI video transmission and reception system according to an embodiment of the present invention, the input device 224 is an image captured by any CCTV camera 11 among the images taken by the user in a plurality of CCTV cameras 11 And an image selection input unit (not shown) for selecting whether to monitor and which monitor 221 to display the image to be monitored.

In this case, the first microcomputer 52 receives a camera selection key (input of a unique ID of a CCTV camera for outputting video among a plurality of CCTV cameras 11) input from an image selection input unit of the input device 224. The monitoring image selection signal is output to the multiplexer 51 to the multiplexer 51 based on the received camera selection key signal.

The multiplexer 51 may include a CCTV camera 11 corresponding to a monitoring image selection signal received from images received from a plurality of CCTV cameras 11 based on the monitoring image selection signals received from the first microcomputer 52. Switching only the image signal captured by the demultiplexer to the demultiplexer 211 of the optical signal receiving module 210.

The second microcomputer 212 of the optical signal receiving module 210 may include a monitor selection key inputted from the image selection input unit of the input device 224 (a monitor 221 for displaying an image among a plurality of monitors 221). Unique ID), and outputs a monitor selection signal to the demultiplexer 211 based on the received monitor selection key signal.

 The demultiplexer 211 may switch control of an image signal received from the multiplexer 51 based on the monitor selection signal received from the second microcomputer 212 to the corresponding monitor.

On the other hand, the optical signal transmission module 50 is provided with an A / D conversion unit (not shown) for receiving the N analog video input from the CCTV camera 11 and converting it to digital, the optical signal receiving module 210 Of course, there is provided a D / A converter (not shown) for converting a digital signal into an analog signal to output to the monitor 221.

The following describes the operation of the high-speed signal processing HD SDI video transmission and reception system according to an embodiment of the present invention having the above configuration.

When the user inputs a camera selection key and a monitor selection key through an image selection input unit (not shown) included in the input device 224, the multiplexer 51 receives the monitoring image selection signal received from the first microcomputer 52. Switching only the video signal captured by the CCTV camera 11 corresponding to the monitoring image selection signal received from the images received from the plurality of CCTV cameras 11 to the demultiplexer 211 of the optical signal receiving module 210 based on. To control.

The demultiplexer 211 switches and controls the video signal received from the multiplexer 51 based on the monitor selection signal received from the second microcomputer 212 to the corresponding monitor so that a CCTV camera selected by the user is captured on the monitor. The image is output.

As described above, the first microcomputer 52 controls the multiplexer 51 to monitor the image being transmitted while maintaining the port currently being operated, and the second microcomputer 212 also demultiplexes the optical signal receiving module 210. 211), the image being received can be monitored while maintaining the current port.

The following describes the operation of the optical slip ring in the HD SDI video transmission apparatus according to an embodiment of the present invention.

When the rotating block 20 rotates, the rotating ring 120 rotates in association with the rotating block 20, the spindle shaft 131 rotates in accordance with the rotation of the rotating ring 120. As the spindle shaft 131 rotates, the first lens holder 141 rotates.

In this case, the lens alignment tube 180, the second lens holder 145, and the second spindle shaft 131 do not rotate and remain fixed.

As the first lens holder 141 rotates, the first optical fiber C1 inserted into the first lens holder 141 rotates and the first capillary 151 connected to the first optical fiber C1 and The first parallel beam lens 161 also rotates to transmit an optical signal.

The following describes the optical signal transmission action.

The video signal acquired by the camera is converted into an optical signal by the first optical conversion unit 54, and the optical signal converted in this way is transmitted by the first optical fiber C1 to the first optical fiber C1 core C1a. Leads to the end.

The light emitted from the end of the first optical fiber core C1a does not spread from the first adhesive part 165 having the same refractive index and goes straight into the first parallel beam lens 161.

The first parallel beam lens 161 enlarges the incident light to 600 um and makes a parallel beam.

The light made of the parallel beam is then incident on the second parallel beam lens 163 after the air gap G1 proceeds to the parallel light, is refracted, and is incident to the core C2a of the second optical fiber C2 and transmitted. .

On the other hand, Figure 8 is a photograph of the measuring instrument screen value measured the optical loss value when the optical slip ring of the pan and tilt rotatable image transmission apparatus according to an embodiment of the present invention is shown, the model number of JGR : It shows the value measured by the optical power meter of the Back Reflection Meter which is BR5, and the loss value of -0.48 dB is displayed. Therefore, when the optical slip ring according to an embodiment of the present invention is adopted, ultra low loss can be realized. It can be confirmed.

It will be apparent to those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or scope of the invention as defined in the appended claims. It is self-evident to those who have.

Therefore, the above-described embodiments are to be considered as illustrative rather than restrictive, and the present invention is not limited to the above description, but may be modified within the scope of the appended claims and equivalents thereof.

1: HD SDI video transmission device 10: Camera housing
11: CCTV Camera 12: Speaker
13: first Ethernet terminal device 20: rotation module
21: pan tilt drive unit 30: support module
50: optical signal transmission module 51: multiplexer
52: the first microcomputer 53: the first death
54: first optical conversion unit 55: first Ethernet connection unit
100: Slip ring of HD SDI video transmission device
110: fixing ring 110a: first hollow hole
115a, 115b: bearing 120: rotary ring
120a: second hollow hole 131: spindle shaft
131a: first through hole 131b: first mounting flange
131c: Dolte 135: fixed shaft
135a: second through hole 141: first lens holder
141a: bottom surface of the first lens holder 141a ': first lens mounting hole
S1: hollow part of the first lens holder 145: second lens holder
145a: upper surface of the second lens holder 145a ': second lens mounting hole
S2: hollow part of the second lens holder 151: first capillary
151a: first insertion hole 155: second capillary
155a: second insertion hole 161: first parallel beam lens
163: second parallel beam lens 165: first adhesive part
167: second bonding portion G1: air gap
171: first bearing 172: second bearing
180: lens alignment tube 180a: third through hole
190: disc spring 190a: center hole
2: HD SDI video receiver 210: optical signal transmission module
211: demultiplexer 212: second microcomputer
213: second Sudes 214: second light conversion unit
215: second Ethernet connection 221: monitor
222: microphone 223: second Ethernet terminal device
224: input device

Claims (3)

A plurality of CCTV cameras 11 provided inside the camera housing 10 to capture an image;
A speaker 12 provided inside the camera housing 10 and outputting an audio signal as a sound;
An image signal input from the CCTV camera 11 and an audio signal output to the speaker 12 and a pan tilt driving control signal for controlling the pan tilt driving of the CCTV camera 11 and an external device. Differentiate and multiplex each of the first Ethernet terminal 13 and the Ethernet signal inputted and outputted through the Ethernet network to be output to the first optical fiber C1 for transmission to the optical signal receiving module 210 of the remote, The audio signal and the signal transmitted from the optical signal receiving module 210, the pan tilt drive control signal and the Ethernet signal received through the first optical fiber (C1) to process the speaker 12, the first microcomputer (52) and The first microcomputer 52 outputting the multiplexer 51 to the first Ethernet terminal device 13 and the pan tilt drive control signal for driving the pan tilt of the CCTV camera 11 to the pan tilt driver 21. And input from the multiplexer 51. Converts the parallel signal into a serial signal and outputs it to the first optical converter 54, converts the serial signal input from the first optical converter 54 into a parallel signal, and outputs it to the multiplexer 51 to output the input / output digital signal at high speed. A first signal (SerDes) 53 for processing with the optical signal receiving module through the first optical fiber (C1) receives the serialized signal from the first source (53) and converts it into an optical signal ( Optical signal transmission module 50 consisting of a first optical conversion unit 54 for transmitting to the optical signal received from the remote optical signal receiving module 210 through the first optical fiber (C1) to an electrical signal (210) );
A camera housing 10 having the CCTV camera 11, a speaker 12, and an optical signal transmission module 50 therein;
A rotation module 20 having a pan tilt driving part 21 configured to pan and tilt the camera housing 10 therein;
A support module 30 supporting the rotation module 20;
A fixed ring 110 having a first hollow hole 110a penetrating in the longitudinal direction in a circular tube shape and a second hollow hole 120a penetrating in the longitudinal direction are formed and coaxially formed in the fixing ring 110. It consists of a rotary ring 120 is rotatably coupled to the rotary ring 120 is fixedly coupled to the rotary module 20 is rotated together when the rotary module 20 is infinitely rotated and the fixed ring 110 ) Is fixed to the support module 30 so that the power supply cable and the control cable connected to the CCTV camera 11 when the camera housing 10 rotates so that the camera housing 10 can rotate without twisting. Slip ring 100;
It is configured to include,
The slip ring 100,
On the upper side of the rotary ring 120 is inserted into the first hollow hole (110a) and fastened to the rotary ring 120 by a fastening screw to rotate in accordance with the rotation of the rotary ring 120 and the first light conversion unit ( A spindle shaft 131 having a first through hole 131 a formed in the longitudinal direction for inserting and fixing the first optical fiber C1 connected to 54;
A cylindrical shape having a bottom surface 141a, the inlet side of the cylinder being pressed against the spindle shaft 131 and fixed to the spindle shaft 131 and rotating together in accordance with the rotation of the spindle shaft 131, and the bottom surface 141a. The first lens holder 141 is formed through the first lens mounting hole (141a '),
A first end inserted into and fixed to the first through hole 131a of the spindle shaft 131, one end of which is connected to the first light conversion part 54, and the other end of which is terminated in the hollow part of the first lens holder 141. 1 optical fiber (C1),
The first insertion hole 151a is formed to penetrate in the longitudinal direction, and the core of the first optical fiber C1 is inserted into the first insertion hole 151a to be provided at the end of the core of the first optical fiber C1. The first capillary 151,
The light is inserted into the first lens mounting hole 141a 'of the first lens holder 141 so as to be coaxial with the core of the first optical fiber C1, and diffuses the light irradiated from the core of the first optical fiber C1. At the same time the first parallel beam lens 161 made of parallel light,
The first parallel beam lens 161 and the first capillary 151 are bonded to each other by adhesion, and the light emitted from the core of the first optical fiber C1 is not diffused. A first adhesive part 165 having the same refractive index as the first optical fiber core to be incident to the 161,
The optical signal of the first optical fiber (C1) is fastened to the fixing ring 110 to be located inside the first hollow hole (110a) on the lower side of the rotary ring 120 facing the spindle shaft 131 A fixed shaft 135 having a second through hole 135a formed in a longitudinal direction to receive and receive and transmit a second optical fiber C2 for transmitting it to a remote optical signal receiving module 210;
A cylindrical shape having an upper surface having a cylindrical inlet side is fitted to the fixed shaft 135 to be fixed to the fixed shaft 135, and a second lens mounting hole 145a 'is formed through the upper surface 145a. A lens holder 145,
A second optical fiber C2 having one end disposed in the hollow portion of the second lens holder 145 and inserted into and fixed to the second through hole 135a of the fixed shaft 135;
The second insertion hole 155a is formed in the longitudinal direction, and the second capillar provided at the end of the second optical fiber by inserting the core of the second optical fiber C2 into the second insertion hole 155a. Lee (155),
The second lens holder 145 may be coaxial with the core of the second optical fiber and spaced apart from the first parallel beam lens 161 so as to form the first parallel beam lens 161 and the air gap G1. 2 is mounted in the lens mounting hole 145a 'and receives the parallel light emitted from the first parallel beam lens 161, and collects the received light to transmit the received light to the second optical fiber C2 without loss. A second parallel beam lens 163 for optically transmitting to the core of the fiber,
The second optical fiber C2 is coupled to the second parallel beam lens 163 and the second capillary 155 by bonding, and the light emitted from the second parallel beam lens 163 is not diffused. A second adhesive part 167 having the same refractive index as the second optical fiber core to be incident to the core of the second optical fiber core,
A first bearing 171 mounted on an outer circumferential surface of the first lens holder 141;
A second bearing 172 mounted on an outer circumferential surface of the second lens holder 145 in the same size and shape as the first bearing 171,
The first bearing 171 and the second bearing while maintaining a gap with the inner circumferential surface of the rotary ring 120 in the hollow hole of the rotary ring 120 as a tubular shape having a third through hole 180a formed in the longitudinal direction therein. The outer ring of (172) is provided with an interference fit and the lens alignment tube 180 for holding the first parallel beam lens 161 and the second parallel beam lens 163 eccentric is further configured to include High speed signal processing HD SDI video transmission apparatus.
The method according to claim 1,
The multiplexer 51 is provided with a signal discrimination unit for discriminating and discriminating video signals, audio signals, data signals, and Ethernet signals inputted and outputted.
The multiplex 51,
The video signal is inputted and controlled by the CCTV camera 11 and the audio signal is inputted and controlled by the speaker 12 by distinguishing the video signal, the audio signal, the data signal and the Ethernet signal by the signal discriminating unit provided therein. The in pan tilt driving control signal is output controlled to the pan tilt driving unit 21 through the first microcomputer 52, and the Ethernet signal is controlled by the first Ethernet terminal device 13 through the first Ethernet connection unit 55. High speed signal processing HD SDI video transmission device, characterized in that.
The method according to claim 2,
The optical slip ring 100 has a length of the first parallel beam lens 161 having a length of λ / 4 wavelength of an optical signal wavelength λ propagating through the first optical fiber, and the second parallel beam The length of the lens 163 is formed to have a length of λ / 4 wavelength of the optical signal wavelength λ propagating the second optical fiber,
The first capillary 151 and the first parallel beam lens 161 are formed to be inclined at an angle of 8 degrees so as to face each other, and the second parallel beam lens 163 and the second capillary 155 may be inclined. ) Is a high-speed signal processing HD SDI video transmission device, characterized in that the surface facing each other is inclined 8 degrees.

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