WO2014129854A1

WO2014129854A1 - Apparatus for transmitting high quality (hd class) digital image signal over long distance using utp cable

Info

Publication number: WO2014129854A1
Application number: PCT/KR2014/001449
Authority: WO
Inventors: 박성하
Original assignee: 주식회사 투윈스컴
Priority date: 2013-02-22
Filing date: 2014-02-22
Publication date: 2014-08-28

Abstract

The present invention relates to an apparatus for transmitting a high quality (HD class) digital image signal over a long distance using a UTP cable. The apparatus is characterized by operating through the steps of: transferring a high quality digital image signal photographed by an HD camera directly to a first repeater of a transmission part to output an HD-SDI digital image signal as a signal of BT 1120, the image signal being amplified so as to compensate for an attenuation of the signal; transferring the compensated high quality digital image signal from the first repeater to a D/A converter to convert the high quality digital image signal into a high quality analog image signal; transferring the high quality analog image signal from the D/A converter to an FPGA of a semiconductor consisting of a programmable logic element and a programmable internal line to separate the high quality analog image signal into a luma signal and a chroma signal along with compensating for an attenuation of the image signal; transferring the corrected high quality analog image signal from the FPGA to a first differential amplifier to amplify the high quality analog image signal into one pair of a +signal and a -signal transmitted through a UTP cable over a distance of 2-3km; making a second differential amplifier of a signal reception part amplify the high quality analog image signal received through the UTP cable so as to compensate for an attenuation of the high quality analog image signal having occurred during the transmission; transferring the amplified high quality analog image signal from the second differential amplifier to an A/D converter to convert the high quality analog image signal into a high quality digital image signal; transferring the high quality digital image signal from the A/D converter to a second FPGA to revise the high quality digital image signal so as to compensate for an attenuation of the signal; transferring the revised high quality digital image signal from the second FPGA to a second repeater to electrically reproduce the revised high quality digital image signal along with compensating for an attenuation of the signal; and transferring the compensated high quality digital image signal from the second repeater to a digital DVR to display the image on a monitor.

Description

Digital high-definition video signal long-distance transmission device using UTP cable

The present invention relates to a digital high-definition (HD-class video) video signal long distance transmission apparatus using a UTP cable, and in particular, digital high-definition (HD-class video) video signal can not be transmitted over a long distance 100m or more using a UTP cable digital high-definition (HD quality video) When transmitting video signals, convert digital signals into signals that can be loaded on UTP cables (analog signals, etc.), amplify them, and transmit them over long distances of 2 to 3 km via UTP (Unshieled Twisted Pair) cables. After receiving and amplifying the signal transmitted through the UTP cable and converting it into a digital high-definition (HD-class) video signal, the signal is modified to an original state in an FPGA so that it can be viewed on a monitor while playing on a digital DVR. UTP that can transmit digital high-definition video signal over long distance of 2 ~ 3km using UTP cable Using the table relates to a digital high definition (HD quality video) image signal long-distance transport.

Generally, transmission and reception of captured video signals, such as a camera of a surveillance system, use a coaxial cable.

That is, after transmitting the captured image of the camera to the receiver installed in the monitoring station by using a coaxial cable, the receiver recovers the signal and outputs it to an image output device such as a monitor.

The coaxial cable for transmitting and receiving image signals photographed by the camera as described above has a straight line structure without twisting by performing external noise shielding using ground.

Unbalanced transmission was performed based on the common ground potential, and the inflow of noise was prevented by transmitting using a shielding film.

Such a coaxial cable has an advantage of cost competitiveness in a small-scale application, but in a large-scale site, since the 1: 1 transmission method increases the material cost of the cable, and the construction efficiency decreases due to an increase in piping wiring trays. Deterioration of image quality over distance is increased, so even if an amplifier is additionally installed, a long distance transmission over a certain distance is impossible.

Thus, the transmission and reception of captured video signals, such as cameras of surveillance systems, were to use a common UTIP cable.

That is, after transmitting the captured image of the camera to the receiver installed in the monitoring station using the UTIP cable to restore the signal from the receiver to output to an image output device such as a monitor.

In the case of the UTP cable, there is no shielding structure, but it has a twisted structure, and a signal is transmitted by a balanced transmission method using phase inversion, and noise is blocked by a balanced transmission method of a twisted structure.

Such a UTP cable has a feature to remove noise by a twisted structure, but it is impossible to completely remove the noise, and when a transmission line exceeds 100m, an amplifier must be added every 100m.

In addition, in the case of the image transmission by the coaxial cable and the UTP cable of the prior art described above, it is not possible to supply power to be input to an external device such as a camera by a coaxial cable or a UTP cable, so that a separate power supply device is provided. I have a problem.

Moreover, due to the remarkable development of computer and information communication technology, the modern society has been developed not only to transmit and receive text data but also to send and receive large-capacity multimedia files such as voice and video through remote internet.

Based on the technology related to the multimedia transmission, a voice call technology through the Internet network has been developed, and furthermore, a video call or video chat service capable of making a call or chatting while watching a face image captured by a video camera is provided.

On the other hand, according to the above video call or video chat service, the other person's face or object can be checked in real time, but the range of the video camera can be taken within a few tens to hundreds of centimeters from the computer. There was a problem that can not provide a remote image.

In order to capture the site image outside the building, after moving to the site and shooting a video with a digital camcorder, the file stored in the camcorder must be transferred to a streaming server by transferring it to a computer through a cable, so there is a time difference between streaming after shooting. There was a problem that can not be broadcast live in real time.

For this reason, the patent application No. 10-2007-0094038 dated September 17, 2007 (simultaneous transmission / reception apparatus for power and video signals using a UTP cable) has been proposed.

Looking at the patent application No. 10-2007-0094038,

In the transceiver having a transmitter and a receiver for transmitting and receiving the video signal and power of the camera via a UTIP cable,

The UTP cable is composed of 1 pair (pair),

The transmitter includes a modulator for receiving a video signal of the camera and modulating the video signal to a specific frequency;

A transmission side differential amplifier which differentially amplifies the output video signal of the modulator;

And a transmission side power supply unit receiving DC power from the receiver and outputting the DC power to the camera.

The one-pair utility cable is connected to an output terminal of the transmitting side differential amplifier through a pair of capacitors and commonly connected to an input terminal of the transmitting side power supply through a pair of inductors.

The receiver,

A receiving side differential amplifier which differentially amplifies the video signal received from the transmitter;

A demodulator for demodulating the output video signal of the receiving side differential amplifier into an original video signal;

A video signal amplifier for amplifying the output video signal of the demodulator;

An image output unit which outputs an output image signal of the image signal amplifier to an image output device;

Receiving side power supply unit for supplying DC power to the transmitter;

The one-pair UTP cable is configured to be connected to the input terminal of the receiving side differential amplification unit through a pair of capacitors and to be commonly connected to the receiving side power supply unit.

In addition, Patent Application No. 10-2005-0070222 dated August 01, 2005 (A method and system for real-time multimedia streaming using 1394ｂ-ＵＴＰ5) was proposed.

This is a real-time multimedia streaming system that streams multimedia data captured by a digital camcorder to a user terminal in real time.

A digital camcorder that photographs an object and generates multimedia data in digital form in real time;

At least one 1394a-1394b bridge for converting 1394a standard multimedia data transmitted from the digital camcorder through a UTP5 cable (Unshielded Twisted Pair Cable cat. 5) to 1394b standard;

A 1394b-UTP5 switching hub that aggregates one or more UTP5 cables connected to the 1394a-1394b bridge and receives 1394b standard multimedia data from the 1394a-1394b bridge; And

Real-time multimedia streaming to receive the multimedia data from the 1394b-UTP5 switching hub in real time via a UTP5 cable and to stream the corresponding multimedia data to the user terminal in real time when a specific channel or a specific URL is selected from the user terminal through an information communication network. server;

It was configured to include.

However, in the conventional video signal transmission and reception apparatus using the UTIP cable as described above, the signal system for transmitting the video signal from the camera to the monitor and the storage device transmits the video signal using the 'NTSC' standard method, and the NTSC signal. In the interlaced scanning method, a single screen is composed of 525 horizontal signal lines, which transmit 30 still images per second to realize a moving image. Therefore, there is a limitation in transmitting high resolution images due to signal characteristics.

In other words, it was not possible to transmit HD video over a UTP cable.

For this reason, video signals are transmitted through a network using standard compression methods such as 'MPEG-4', 'H.264', etc. Although a method of doing so has been proposed, a video transmission method using a network can transmit a high resolution, but there are many inconveniences for users and installers.

That is, PnP (Plug and Play) does not become a problem that can be used to set the encoder IP settings, port settings, and other settings using a separate configuration program and management program for each manufacturer.

In addition, each manufacturer uses a standard compression method, but since the internal programs for implementing the images are all different, they are not compatible with each other.

The IP method (compression) using UTP cable can transmit HD-quality video over a long distance, but video has a drawback phenomenon or a traffic problem.

And although some HD-SDI transmission method is used, when the transmission distance is coaxial cable, the transmission distance is only 140 ~ 200m, so various methods should be used to extend the transmission distance.

Here, HD-SDI (High Definition Serial Digital Interface) refers to the digital video transmission standard, which is advantageous when implementing high resolution video of at least 720p (1280 x 720), and currently supports HD-SDI format in HD cameras and broadcasting equipment for HD digital broadcasting. I use it.

Since each format for transmitting the digital high-definition video (HD-SDI) signal has a large amount of data transmitted per second, the frequency should be used at a high frequency of several hundred MHz to 1 GHz or more, and compared with an analog video format using less than 10 MHz. If you look at the difference is more than 100 times.

Higher frequencies mean that waveforms are shorter, so signal attenuation occurs faster, and most importantly, signal attenuation should be minimized.

Therefore, a 75 ohm coaxial cable should be used to transmit a digital high-definition video (HD-SDI) signal, and there is a problem in that the signal attenuation occurs due to the frequency-dependent refinement wave voltage ratio (VSWR) when a general BNC plug is used.

Therefore, HD class video can be transmitted through a coaxial cable, but only up to 200m can be transmitted. Therefore, a repeater should be installed every 200m section to transmit HD class video over a long distance of 2-3km through a coaxial cable. there was.

That is, as shown in FIG.

In order to output the HD-quality video signal captured by the HD camera 101 to the repeater 103 via the coaxial cable 102 and transmit it to the receiving unit 110, each of the

coaxial cables

104, 106 and 109 is transmitted. The first repeater 105, the second repeater 107, and the n-th repeater 108 should be installed at intervals of 200 m.

Therefore, there are inefficient disadvantages such as difficulty in installing a repeater and increasing installation cost.

In addition, if the range of HD camera installation is in a large area such as an apartment complex, the distance to be managed while receiving the video signals of these HD cameras becomes longer, so it is also possible to suggest a method using an optical cable. It was expensive and not easy to install, so it could not be used efficiently.

Accordingly, the present invention is to solve the above-mentioned problems, the digital high-definition video signal can not be transmitted over a long distance over 100m over the UTP cable to transmit digital high-definition video signal When the digital signal is converted into a signal (analog signal, etc.) that can be carried on the UTP cable, and amplified it, then transmitted through a UTP cable (Unshieled Twisted Pair: UTP) cable, and transmitted through the UTP cable After receiving and amplifying the signal, it converts it into a digital high-definition video signal and converts the signal to the original state in the FPGA so that it can be viewed on a monitor while playing on a digital DVR. Of digital high-definition video signal using UTP cable that can transmit 2 ~ 3Km long distance To provide a transmitting apparatus for that purpose.

Long distance digital high-definition (HD-class video) video signal transmission apparatus using the UTP cable of the present invention for achieving the above object,

The digital high-definition video signal shot by the HD camera is directly transmitted to the first repeater of the transmitter to receive the HD-SDI digital video signal and amplify the video signal while outputting the signal of the BT 1120 to compensate for the attenuation of the signal.

In the D / A converter receiving the digital high definition image signal restored from the repeater, the digital high definition image signal is converted into an analog high definition image signal,

Attenuation of video signal while separating Luma signal and Chroma signal of analog high definition video signal in FPGA which is a semiconductor device including programmable logic elements and programmable internal lines receiving analog high definition video signal converted through D / A converter To compensate,

The first differential amplifier receiving the analog high definition video signal modified by the FPGA amplifies the analog high definition video signal with one pair of + signal and-signal according to the UTP cable, and then transmits it over a long distance of 2 to 3 km through the UTP cable. Let's do it,

In the second differential amplifier of the receiver for receiving the analog high-definition video signal transmitted through the UTP cable, the analog high-definition video signal is amplified to compensate for the signal attenuation generated during transmission,

In the A / D converter receiving the analog high-definition video signal amplified by the second differential amplifier to convert the analog high-definition video signal into a digital high-definition video signal,

Compensating for signal attenuation of the digital high definition video signal in a second FPGA that receives the digital high definition video signal from the A / D converter.

Compensating attenuation of the signal while amplifying the digital high definition video signal in a second repeater receiving the modified digital high definition video signal from the second FPGA,

The digital high-definition video signal amplified by the repeater is characterized in that it is configured to be viewed on a monitor while playing on the digital DVR.

By using a digital high-definition (HD-class image) video signal long-distance transmission apparatus using the UTP cable according to the present invention

In order to transmit HD-quality video signals taken by HD cameras to the converter via coaxial cables, the first repeater and the second repeater n-repeaters had to be installed at every 200m interval of the coaxial cable.

It converts digital high definition video signal that could not be transmitted through UTP cable to analog signal that can transmit 2 ~ 3Km via UTP cable, and then converts it into digital high definition video signal after long distance transmission. By allowing users to check high-quality video on a monitor, digital high-definition (HD video) video signals can be transmitted over a distance of 2 to 3 km without installing the first repeater, the second repeater, and the n-th repeater every 200 m.

When transmitting digital high-definition video signals over long distances, UTP cables with a smaller diameter than coaxial cables are used to improve the piping space efficiency.

Digital high-definition (HD-class) video signal shot by the HD camera to output through the UTP cable has the effect that can be used without a separate power line or signal line.

1 is a schematic diagram showing a state of transmitting through a middle coaxial cable.

Figure 2 is a schematic diagram showing the overall configuration according to an embodiment of the present invention.

3 is a schematic diagram showing an overall configuration according to another embodiment of the present invention.

Figure 4 is a schematic diagram showing the overall configuration according to another embodiment of the present invention.

5 is a schematic diagram showing an overall configuration according to another embodiment of the present invention.

6 is a schematic diagram showing an overall configuration according to another embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

2 is a diagram illustrating a long distance transmission apparatus of a digital high definition (HD level) video signal using a UTP cable according to an embodiment of the present invention.

The digital high-definition video signal captured by the HD camera 1 is directly transmitted to the first repeater 11 of the transmission unit TX. The HD-SDI digital video signal is input and output as a signal of the BT 1120. Amplifies to compensate for the attenuation of the signal,

The D / A converter 12 receiving the digital high definition image signal compensated from the first repeater 11 converts the digital high definition image signal into an analog high definition image signal,

The analog high definition image in the first field programmable gate array (FPGA) 13, which is a semiconductor device including a programmable logic element that receives the converted analog high definition image signal through the D / A converter 12 and a programmable internal line. Compensating for attenuation of video signal by separating Luma signal and Chroma signal of the signal,

In the first differential amplifier 14 receiving the analog high definition video signal modified by the first FPGA 13, the analog high definition video signal is amplified by one pair of the + signal and the-signal according to the UTP cable. 15) through a long distance of 2-3km,

In the second differential amplifier 21 of the receiver (RX) 20 receiving the analog high definition video signal transmitted through the UTP cable 15, the analog high definition video signal is amplified to compensate for the signal attenuation generated during transmission.

In the A / D converter 22 receiving the analog high definition image signal amplified by the second differential amplifier 21, the analog high definition image signal is converted into a digital high definition image signal,

Compensating for signal attenuation of the digital high definition image signal in the second FPGA 23 receiving the digital high definition image signal from the A / D converter 22,

Compensating the attenuation of the signal while amplifying the digital high definition video signal in the second repeater 24 receiving the modified digital high definition video signal from the second FPGA 23,

The digital high definition video signal compensated by the second repeater 24 is transmitted to the digital DVR 30 so as to be viewed by the monitor 31 while playing.

Here, the data signal is output from the digital DVR 30 to be transmitted to each HD camera 1 to control the state of view, zoom, and contrast of the HD camera 1 with the digital DVR 30 or the joystick in the disaster prevention room. The communication direction is one-way communication.

In addition, the patch (PATCH) 40 in the place where the digital DVR 30 is located through the two pairs of the UTP cable 15 to supply the necessary power to all HD cameras 1 without using a separate power line. do.

The digital high-definition video signal long distance transmission apparatus using the UTP cable of the present invention configured as described above is an analog signal when transmitting a digital high-definition video signal through a UTP (Unshieled Twisted Pair) cable 15. By converting the data into a digital signal, it can transmit up to 2 ~ 3km, which is much longer than the transmission distance of 100m.

The digital high-definition (HD-class image) video signal captured by the HD camera 1 is transmitted to the digital DVR 30 through the transmitter 10, the UTP cable 15, and the receiver 20, while the digital DVR of the disaster prevention room ( 30) or the data controlled by the joystick is transmitted to all the HD cameras 1 through the receiver 20, the UTP cable 15, and the transmitter 10, such as the angle of view, zoom, contrast, etc. of the HD camera 1; Allows you to control the state.

The digital high-definition video signal captured by the HD camera 1 is directly transmitted to the first repeater 11 of the transmission unit TX, and the HD-SDI digital video signal is output as a signal of BT 1120. To amplify the video signal to compensate for the attenuation of the signal.

The D / A converter 12 receiving the digital high definition video signal compensated from the first repeater 11 converts the digital high definition video signal into an analog high definition video signal.

The analog high definition image in the first field programmable gate array (FPGA) 13, which is a semiconductor device including a programmable logic element that receives the converted analog high definition image signal through the D / A converter 12 and a programmable internal line. Compensate for attenuation of video signal by separating Luma signal and Chroma signal.

In the first differential amplifier 14 receiving the analog high definition video signal modified by the first FPGA 13, the analog high definition video signal is amplified by one pair of the + signal and the-signal according to the UTP cable. 15) through a long distance of 2-3km through.

The second differential amplifier 21 of the receiver (RX) 20 receiving the analog high definition video signal transmitted through the UTP cable 15 amplifies the analog high definition video signal to compensate for the signal attenuation generated during transmission.

The A / D converter 22 receiving the analog high definition image signal amplified by the second differential amplifier 21 converts the analog high definition image signal into a digital high definition image signal.

The second FPGA 23 receiving the digital high definition video signal from the A / D converter 22 compensates for the signal attenuation of the digital high definition video signal.

The second repeater 24 receiving the modified digital high definition video signal from the second FPGA 23 compensates for the attenuation of the signal while restoring the digital high definition video signal.

The digital high-definition video signal compensated for signal attenuation in the second repeater 24 is transmitted to the digital DVR 30 so as to reproduce the digital high-definition video signal captured by the HD camera 1 in the digital DVR 30. The monitor 31 allows viewing.

Figure 3 is a digital high-definition (HD-class video) using a UTP cable of the present invention according to another embodiment of a long distance transmission apparatus of digital high-definition (HD) video (1) (1a) ... (1n) HD video) After converting video signal to analog high definition video signal, it is 2 ~ 3Km through UTP (Unshieled Twisted Pair) cable (15) (15a) ... (15n) and 25 pair UTP cable (16) It is to be able to transmit to the digital DVR 30 installed at a far distance up to, the same configuration as the configuration of FIG.

The digital high-definition (HD-class video) video signal captured by the HD camera (1) (1a) ... (1n) is transmitted to the transmitter 10, the UTP cable (15) (15a) ... (15n), and 25 pairs ( Pair) Data to be controlled by the digital DVR 30 of the disaster prevention room or the joystick while being transmitted to the digital DVR 30 via the UTP cable 16 and the receiver 20 are paired with the receiver 20 and 25 pair UTP. The state of the angle of view, zoom, contrast, etc. of the HD camera 1 is transmitted to all the

HD cameras

1, 1a, ... 1n via the cable 16, the UTP cable 15, and the transmitter 10. To control.

The digital high-definition (HD-class video) video signals respectively shot by the

HD cameras

1, 1a, 1n are transferred directly to the first repeater 11 of the transmission unit TX 10, and then HD-. The attenuation of the signal is compensated by amplifying the video signal while receiving the SDI digital video signal and outputting it as a signal of the BT 1120.

In the D / A converter 12 receiving the digital high quality video signal compensated for signal attenuation from the first repeater 11, the digital high quality video signal is loaded on the

UTP cables

15, 15a, 15n. To convert an analog high-definition video signal.

The high definition video signal converted into an analog signal through the D / A converter 12 compensates for the attenuation of the video signal while separating the luma signal and the chroma signal of the analog high definition video signal in the first FPGA 13.

In the first differential amplifier 14 receiving the modified analog high definition video signal from the first FPGA 13, the analog high definition video signal is amplified by one pair of a + signal and a-signal according to a UTP cable, and then a UTP cable ( 15) through a long distance of 2-3km through.

Each analog high-definition video signal is transmitted from each UTP cable (15) (15a) ... (15n) to the patch 40 so that the video signal is amplified and transmitted through one 25 pair UTP cable (16). Be sure to

In the second differential amplifier 21 of the receiver (RX) 20 receiving the analog high definition video signal transmitted through the 25 pair UTP cable 16, the analog high definition video signal is amplified to compensate for the signal attenuation generated during transmission. do.

The second FPGA 23 receiving the digital high definition video signal from the A / D converter 22 modifies the signal attenuation compensation of the digital high definition video signal.

The digital high-definition video signal compensated for attenuation in the second repeater 24 is transmitted to the digital DVR 30 so that the digital high-definition video signal captured by the HD camera 1 can be reproduced by the digital DVR 30 while the monitor is reproduced. (31).

The digital data transmitted from the digital DVR 30 through the receiver 20 is transmitted to the patch 40 through the 25 pair UTP cable 16, and then a plurality of

UTP cables

15 and 15a. It is transmitted in parallel to .15 (n) and is transmitted to each HD camera (1) (1a) ... (1n) to control the state of view, zoom, contrast, etc. of the HD camera (1).

Power supplied to the patch 40 from the outside is transferred in parallel to a plurality of UTP cables (15) (15a) ... (15n) and supplied to each HD camera (1) (1a) ... (1n) This enables efficient operation by a stable power source without using a separate power line.

FIG. 4 is a diagram in which a transmission unit (TX) 50 is built in the HD camera 2 according to another embodiment of a digital high-definition (HD-class video) long-distance transmission apparatus using a UTP cable according to the present invention. The same configuration as the configuration is shown by the same reference numerals.

The digital high definition video signal captured by the HD camera 2 is transferred to an image signal processor (ISP) 51 of a transmitting unit (TX) 50 embedded in the HD camera 2, and the digital high quality video signal is processed. Convert to analog high definition video signal.

The first FPGA (field programmable gate array) 52 receives the analog high definition video signal converted through the ISP 51 to compensate for the attenuation of the video signal while separating the luma signal and the chroma signal of the analog high definition video signal. do.

In the first differential amplifier 53 which receives the analog high definition video signal modified by the first FPGA 52, the analog high definition video signal is amplified by one pair of a + signal and a-signal according to the UTP cable. 15) through a long distance of 2-3km through.

The second differential amplifier 21 of the receiver (RX) 20 receiving the analog high definition video signal transmitted through the UTP cable 15 amplifies the high quality video signal to compensate for signal attenuation generated during transmission.

The digital high-definition video signal is originally transferred from the second field programmable gate array (FPGA) 23, which is a semiconductor device including a programmable logic element that receives the digital high-definition video signal from the A / D converter 22 and a programmable internal line. Modify to the state of.

The original high definition video signal modified by the second FPGA 23 compensates for the attenuation of the signal while electrically reproducing the signal in the second repeater 24.

The original high-definition video signal reproduced by the second repeater 24 is transmitted to the digital DVR 30 as a digital signal so that it can be viewed by the monitor 31 while reproducing it by the digital DVR 30.

FIG. 5 is a block diagram of a transmission unit (TX) 60 embedded in an HD camera 3 according to another embodiment of a digital high-definition (HD-class video) video signal long distance transmission apparatus using a UTP cable according to the present invention. The same configuration as the configuration is shown by the same reference numerals.

The digital high quality video signal captured by the HD camera 3 is transferred to the D / A converter 61 of the transmitter (TX) 60 built in the HD camera 3 to convert the digital high quality video signal into an analog high definition video signal. Do it.

In the first field programmable gate array (FPGA) 62 receiving the analog high definition video signal converted through the D / A converter 61, the video signal is attenuated while separating the luma signal and the chroma signal of the analog high definition video signal. To compensate.

The first differential amplifier 63 receiving the analog high definition video signal modified by the first FPGA 62 amplifies the analog high definition video signal with one pair of a + signal and a-signal according to the UTP cable, and then UTP cable ( 15) through a long distance of 2-3km through.

FIG. 6 illustrates a digital high-definition (HD-class) video signal long-distance transmission device according to another embodiment of the present invention, in which the same components as those in FIG. 2 are designated by the same reference numerals.

Digital high-definition (HD-class video) video signals captured by the HD camera 1 are superimposed and output through one coaxial cable 5.

The digital high-definition (HD-class image) video signal photographed by the HD camera 1 is transmitted to the digital DVR 30 through the transmitter 10, the UTP cable 15, and the receiver 20, and the digital in the disaster prevention room. Data controlled by the DVR 30 or the joystick is transmitted to all the HD cameras 1 through the receiver 20, the UTP cable 15, and the transmitter 10, so that the angle of view, zoom, and contrast of the HD camera 1 are increased. To control the status of the lamp.

The digital high-definition video signal whose signal attenuation is compensated for in the second repeater 24 is transmitted to the digital DVR 30 so that the digital high-definition video signal captured by the HD camera 1 is reproduced by the digital DVR 30. While viewing the monitor (31).

Although the preferred embodiments of the present invention have been illustrated and described above, the present invention is not limited to the above-described embodiments, and the present invention is not limited to the above-described embodiments without departing from the spirit of the present invention as claimed in the claims. Various modifications may be made by those skilled in the art, and such modifications are intended to fall within the scope of the appended claims.

Claims

Converts digital high-definition (HD-class video) video signals captured by HD cameras (1) to digital signals (analog signals) that can be loaded on UTP cables through D / A converters, and transmits them over long distances of 2 to 3 km through UTP cables. Digital high-definition (HD-class video) video signal long-distance transmission device, characterized in that configured to be.
In the long-distance transmission device of digital high-definition (HD-class image) video signal shot by an HD camera,

The digital high-definition (HD-class image) video signal shot by the HD camera 1 is transmitted to the D / A converter 12,

In the D / A converter 12 which has received the digital high definition image signal, the digital high definition image signal is converted into an analog high definition image signal.

The converted analog high-definition video signal is transmitted to the 2 ~ 3km through the UTP cable 15,

In the A / D converter 22 receiving the analog high definition video signal transmitted from 2 to 3 km through the UTP cable, the analog high definition video signal is converted into a digital high definition (HD class video) video signal.

The digital high-definition video signal converted by the A / D converter 22 is transmitted to the digital DVR 30 and reproduced by the digital DVR 30 while being configured to be viewed on the monitor 31 UTP (UTP) ) Long distance transmission device for digital high-definition video signal using cable.
The method according to claim 2,

In the digital DVR 30, a data signal for controlling the angle of view, zoom, and contrast of the HD camera 1 is output and transmitted to each HD camera 1 to the digital DVR 30 or the joystick in the disaster prevention room. Long distance transmission device for digital high-definition (HD-level video) video signal using a UTP cable, which is configured to be controlled.
In the long-distance transmission device of digital high-definition (HD-class image) video signal shot by an HD camera,

The digital high-definition video signal captured by the HD camera 1 is directly transmitted to the first repeater 11 of the transmission unit TX. The HD-SDI digital video signal is input and output as a signal of the BT 1120. Amplifies to compensate for the attenuation of the signal,

In the D / A converter 12 receiving the digital high definition image signal compensated by the first repeater 11, the digital high definition image signal is converted into an analog high definition image signal and then converted into an analog high definition image signal of 2 to 3 km through the UTP cable 15. Transmit over long distances,

In the A / D converter 22 of the receiving unit (RX) 20 which receives the analog high definition video signal transmitted through the UTP cable 15, converts the analog high definition video signal into a digital high definition video signal,

The second repeater 24 receiving the digital high definition video signal from the A / D converter 22 restores the digital high definition video signal and compensates for the attenuation of the signal.

The digital high definition video signal compensated by the second repeater 24 is transmitted to the digital DVR 30 to be viewed on the monitor 31 while being reproduced by the digital DVR 30. Long distance transmission device for digital high-definition video signal using cable.
In the long-distance transmission device of digital high-definition (HD-class image) video signal shot by an HD camera,

The digital high-definition video signal captured by the HD camera 1 is directly transmitted to the first repeater 11 of the transmission unit TX. The HD-SDI digital video signal is input and output as a signal of the BT 1120. Amplifies to compensate for the attenuation of the signal,

The D / A converter 12 receiving the digital high definition video signal compensated from the first repeater 11 converts the digital high definition video signal into an analog high definition video signal,

The analog high definition image in the first field programmable gate array (FPGA) 13, which is a semiconductor device including a programmable logic element that receives the converted analog high definition image signal through the D / A converter 12 and a programmable internal line. Compensating for the attenuation of the video signal by separating the Luma signal and the Chroma signal of the signal, and then transmits a long distance of 2 to 3 km through the UTP cable 15,

In the A / D converter 22 of the receiving unit (RX) 20 which receives the analog high definition video signal transmitted through the UTP cable 15, converts the analog high definition video signal into a digital high definition video signal,

In the second FPGA 23 receiving the digital high definition video signal from the A / D converter 22, it is corrected for compensation of signal attenuation of the digital high definition video signal.

The second repeater 24 receiving the modified digital high definition video signal from the second FPGA 23 is configured to compensate for the attenuation of the signal while restoring the signal of the digital high definition video signal.

The digital high definition video signal compensated by the second repeater 24 is transmitted to the digital DVR 30 to be viewed on the monitor 31 while being reproduced by the digital DVR 30. Long distance transmission device for digital high-definition video signal using cable.
In the long-distance transmission device of digital high-definition (HD-class image) video signal shot by an HD camera,

The digital high-definition video signal captured by the HD camera 1 is directly transmitted to the first repeater 11 of the transmission unit TX. The HD-SDI digital video signal is input and output as a signal of the BT 1120. Amplifies to compensate for the attenuation of the signal,

The D / A converter 12 receiving the digital high definition video signal compensated from the first repeater 11 converts the digital high definition video signal into an analog high definition video signal,

In the first differential amplifier 14 receiving the analog high-definition video signal converted through the D / A converter 12, the analog high-definition video signal is amplified by one pair of the + signal and the-signal according to the UTP cable, and then UTP. Transmission over a long distance of 2-3 km through the cable 15,

In the second differential amplifier 21 of the receiver (RX) 20 receiving the analog high definition video signal transmitted through the UTP cable 15, the analog high definition video signal is amplified to compensate for the signal attenuation generated during transmission.

In the A / D converter 22 receiving the analog high definition image signal amplified by the second differential amplifier 21, the analog high definition image signal is converted into a digital high definition image signal,

The second repeater 24 receiving the digital high definition video signal from the A / D converter 22 restores the digital high definition video signal and compensates for the attenuation of the signal.

The digital high definition video signal compensated by the second repeater 24 is transmitted to the digital DVR 30 to be viewed on the monitor 31 while being reproduced by the digital DVR 30. Long distance transmission device for digital high-definition video signal using cable.
In the long-distance transmission device of digital high-definition (HD-class image) video signal shot by an HD camera,

The digital high-definition video signal captured by the HD camera 1 is directly transmitted to the first repeater 11 of the transmission unit TX. The HD-SDI digital video signal is input and output as a signal of the BT 1120. Amplifies to compensate for the attenuation of the signal,

The D / A converter 12 receiving the digital high definition video signal compensated from the first repeater 11 converts the digital high definition video signal into an analog high definition video signal,

The analog high definition image in the first field programmable gate array (FPGA) 13, which is a semiconductor device including a programmable logic element that receives the converted analog high definition image signal through the D / A converter 12 and a programmable internal line. Compensating for attenuation of video signal by separating Luma signal and Chroma signal of the signal,

The first differential amplifier 14 receiving the analog high definition video signal compensated by the first FPGA 13 amplifies the analog high definition video signal with one pair of a + signal and a-signal according to the UTP cable, and then UTP cable ( 15) through a long distance of 2-3 km,

In the second differential amplifier 21 of the receiver (RX) 20 receiving the analog high definition video signal transmitted through the UTP cable 15, the analog high definition video signal is amplified to compensate for the signal attenuation generated during transmission.

In the A / D converter 22 receiving the analog high definition image signal amplified by the second differential amplifier 21, the analog high definition image signal is converted into a digital high definition image signal,

In the second FPGA 23 receiving the digital high definition video signal from the A / D converter 22, it is corrected for compensation of signal attenuation of the digital high definition video signal.

The second repeater 24 receiving the modified digital high definition video signal from the second FPGA 23 compensates for the attenuation of the signal while restoring the digital high definition video signal.

The digital high definition video signal compensated by the second repeater 24 is transmitted to the digital DVR 30 to be viewed on the monitor 31 while being reproduced by the digital DVR 30. Long distance transmission device for digital high-definition video signal using cable.
The digital high-definition (HD-class image) video signals respectively shot by the HD cameras (1) (1a) ... (1n) are analog high-definition images via the transmitter (TX) 10 (10a) ... (10n). Is converted into a signal and transmitted over a long distance of 2 to 3 km through the UTP cable 15 (15a) ... (15n),

Each analog high-definition video signal is transmitted from each UTP cable (15) (15a) ... (15n) to the patch 40 so that the video signal is amplified and transmitted through one 25 pair UTP cable (16). Make sure,

The analog high definition video signal transmitted through the 25 pair UTP cable 16 is converted into a digital high definition video signal via a receiving unit (RX) 20,

The digital high-definition video signal is transmitted to the digital DVR (30) while playing the digital high-definition (HD video) video signal long-distance transmission device using a UTP cable, characterized in that configured to be viewed through the monitor 31 .
The method according to claim 8,

The digital high-definition (HD-class video) video signals respectively shot by the HD cameras 1, 1a, 1n are transmitted via the transmitters TX, 10, 10a, 10n. It is converted into a high quality video signal and transmitted over a long distance of 2 to 3 km through 4 pairs of UTP cables 15, 15a, 15n, respectively.

The respective analog high definition video signals are transmitted to the patch 40 through the respective UTP cables 15, 15a, 15n, while power is supplied from the patch 40 to the respective UTP cables 15, 15a. Long distance digital high-definition (HD-class video) video signal using a UTP cable, which is configured to be supplied to the HD cameras 1, 1a, 1n through 15n. Transmission device.
The method according to claim 8,

When the transmitter (TX) (10) (10a) ... (10n) is transmitted to the patch 40 via an analog high-definition video signal via each UTP cable (15) (15a) ... (15n) Digital high-quality images (HD-quality video) shot from up to 24 HD cameras (1) (1a) ... (1n) while amplifying the video signal to transmit data through one pair of 25 pair UTP cable 16 Each video signal is transmitted through one pair of 25 pair UTP cable 16,

The analog high-definition video signal transmitted through the 25 pair UTP cable 16 is converted into a digital high-definition video signal via the receiving unit (RX) 20, transferred to the digital DVR 30, and played back through the monitor 31. Digital high-definition (HD-class video) video signal long-distance transmission device using a UTP cable, characterized in that configured to see.
The digital high-definition video signal captured by the HD camera 2 is converted into an analog high-definition video signal by a transmission unit (TX) 50 built in the HD camera 2 and transmitted to a long distance of 2-3 km through the UTP cable 15. and,

Receiving unit (RX) 50 converts the analog high-definition video signal to a digital high-definition video signal, and transmits to the digital DVR 30 to play while watching the monitor 31 characterized in that configured to be viewed through the monitor (UTP) cable Digital high-definition (HD video) video signal long-distance transmission device.
The method according to claim 11,

The transmitting unit (TX) 50 converts the digital high definition video signal into an analog high definition video signal by signal processing at an ISP (image signal processor) 51,

The first FPGA 52 receiving the converted analog high definition video signal through the ISP 51 compensates for the attenuation of the video signal while separating the luma signal and the chroma signal of the analog high definition video signal, and then UTP cable 15. Long distance transmission device for digital high-definition (HD-class video) video signal using a UTP cable, characterized in that configured to transmit over a long distance of 2 to 3km through.
The method according to claim 11,

The transmitting unit (TX) 50 converts the digital high definition video signal into an analog high definition video signal by signal processing at an ISP (image signal processor) 51,

The first FPGA 52 receiving the analog high definition video signal converted through the ISP 51 is corrected for compensation of signal attenuation of the analog high definition video signal,

In the first differential amplifier 53 which receives the analog high definition video signal modified by the first FPGA 52, the analog high definition video signal is amplified by one pair of a + signal and a-signal according to the UTP cable. 15) Digital high-definition (HD-class video) video signal long-distance transmission device using a UTP cable, characterized in that configured to transmit over a long distance of 2-3km through.
In the long-distance transmission device of digital high-definition (HD-class image) video signal shot by an HD camera,

The digital high-definition video signal captured by the HD camera 2 is converted into an analog high-definition video signal while signal processing the digital high-definition video signal by the ISP (image signal processor) 51 of the built-in transmitter (TX) 50,

The first FPGA 52 receiving the analog high definition video signal converted through the ISP 51 is corrected for compensation of signal attenuation of the analog high definition video signal,

In the first differential amplifier 53 which receives the analog high definition video signal modified by the first FPGA 52, the analog high definition video signal is amplified by one pair of a + signal and a-signal according to the UTP cable. 15) through a long distance of 2-3km,

In the second differential amplifier 21 of the receiver (RX) 20 receiving the analog high definition video signal transmitted through the UTP cable 15, the analog high definition video signal is amplified to compensate for the signal attenuation generated during transmission.

In the A / D converter 22 receiving the analog high definition image signal amplified by the second differential amplifier 21, the analog high definition image signal is converted into a digital high definition image signal,

In the second FPGA 23 receiving the digital high definition video signal from the A / D converter 22, it is corrected for compensation of signal attenuation of the digital high definition video signal.

The second repeater 24 receiving the modified digital high definition video signal from the second FPGA 23 compensates for the attenuation of the signal while restoring the digital high definition video signal.

The digital high definition video signal compensated by the second repeater 24 is transmitted to the digital DVR 30 to be viewed on the monitor 31 while being reproduced by the digital DVR 30. Long distance transmission device for digital high-definition video signal using cable.
The digital high-definition video signal captured by the HD camera 3 is transferred to the D / A converter 61 of the built-in transmitter (TX) 60 to convert the digital high-definition video signal into an analog high-definition video signal.

In the first field programmable gate array (FPGA) 62 receiving the analog high definition video signal converted through the D / A converter 61, the video signal is attenuated while separating the luma signal and the chroma signal of the analog high definition video signal. Compensation for the digital high-definition (HD class) video signal long-distance transmission device using a UTP cable, characterized in that configured to transmit a long distance of 2-3km through the UTP cable (15).
The method according to claim 15,

The digital high-definition video signal captured by the HD camera 3 is transferred to the D / A converter 61 of the built-in transmitter (TX) 60 to convert the digital high-definition video signal into an analog high-definition video signal.

The first differential amplifier 63 receiving the analog high definition image signal converted through the D / A converter 61 amplifies the analog high definition image signal into one pair of + and-signals according to the UTP cable, and then UTP. Long distance transmission apparatus for digital high-definition (HD-class video) video signal using a UTP cable, characterized in that it is configured to transmit a long distance of 2-3km through the cable (15).
The method according to claim 15,

The digital high-definition video signal captured by the HD camera 3 is transferred to the D / A converter 61 of the built-in transmitter (TX) 60 to convert the digital high-definition video signal into an analog high-definition video signal.

In the first field programmable gate array (FPGA) 62 receiving the analog high definition image signal converted through the D / A converter 61, the video signal is attenuated while separating the luma signal and the chroma signal of the analog high definition image signal. To compensate,

The first differential amplifier 63 receiving the analog high definition video signal modified by the first FPGA 62 amplifies the analog high definition video signal with one pair of a + signal and a-signal according to the UTP cable, and then UTP cable ( 15) Digital high-definition (HD-class video) video signal long-distance transmission device using a UTP cable, characterized in that configured to transmit over a long distance of 2-3km through.
In the long-distance transmission device of digital high-definition (HD-class image) video signal shot by an HD camera,

The digital high quality video signal captured by the HD camera 3 is transferred to the D / A converter 61 of the transmitter (TX) 60 built in the HD camera 3 to convert the digital high quality video signal into an analog high definition video signal. Let's do it,

In the first field programmable gate array (FPGA) 62 receiving the analog high definition image signal converted through the D / A converter 61, the video signal is attenuated while separating the luma signal and the chroma signal of the analog high definition image signal. To compensate,

The first differential amplifier 63 receiving the analog high definition video signal modified by the first FPGA 62 amplifies the analog high definition video signal with one pair of a + signal and a-signal according to the UTP cable, and then UTP cable ( 15) through a long distance of 2-3km,

In the second differential amplifier 21 of the receiver (RX) 20 receiving the analog high definition video signal transmitted through the UTP cable 15, the analog high definition video signal is amplified to compensate for the signal attenuation generated during transmission.

In the A / D converter 22 receiving the analog high definition image signal amplified by the second differential amplifier 21, the analog high definition image signal is converted into a digital high definition image signal,

In the second FPGA 23 receiving the digital high definition video signal from the A / D converter 22, it is corrected for compensation of signal attenuation of the digital high definition video signal.

The second repeater 24 receiving the modified digital high definition image signal from the second FPGA 23 is configured to compensate for attenuation of the signal while restoring the digital high definition image signal.

The digital high definition video signal compensated by the second repeater 24 is transmitted to the digital DVR 30 to be viewed on the monitor 31 while being reproduced by the digital DVR 30. Long distance transmission device for digital high-definition video signal using cable.
Output digital high-definition (HD quality) video signal shot by the HD camera (1) to the transmission unit (TX) 80 through the coaxial cable (5) to transmit up to 2-3km through the UTP cable (15) Long distance transmission device for digital high-definition (HD-class video) video signal using a UTP cable.