WO2014129854A1 - Appareil permettant de transmettre un signal d'image numérique de haute qualité (haute définition) sur une longue distance à l'aide d'un câble utp - Google Patents

Appareil permettant de transmettre un signal d'image numérique de haute qualité (haute définition) sur une longue distance à l'aide d'un câble utp Download PDF

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Publication number
WO2014129854A1
WO2014129854A1 PCT/KR2014/001449 KR2014001449W WO2014129854A1 WO 2014129854 A1 WO2014129854 A1 WO 2014129854A1 KR 2014001449 W KR2014001449 W KR 2014001449W WO 2014129854 A1 WO2014129854 A1 WO 2014129854A1
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Prior art keywords
video signal
signal
digital
high definition
definition video
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PCT/KR2014/001449
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English (en)
Korean (ko)
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박성하
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주식회사 투윈스컴
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Priority claimed from KR1020130019480A external-priority patent/KR101360992B1/ko
Priority claimed from KR1020130144169A external-priority patent/KR101360996B1/ko
Application filed by 주식회사 투윈스컴 filed Critical 주식회사 투윈스컴
Publication of WO2014129854A1 publication Critical patent/WO2014129854A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast

Definitions

  • 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)
  • 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)
  • the signal 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.
  • transmission and reception of captured video signals use a coaxial cable.
  • the receiver 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.
  • 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.
  • 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.
  • 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.
  • the file stored in the camcorder 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.
  • 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
  • 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 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.
  • Patent Application No. 10-2005-0070222 dated August 01, 2005 A method and system for real-time multimedia streaming using 1394b-UTP5 was proposed.
  • 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;
  • 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
  • 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.
  • 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.
  • 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.
  • PnP Plug and Play
  • 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.
  • HD-SDI High Definition Serial Digital Interface
  • 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.
  • 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.
  • HD-SDI digital high-definition video
  • 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.
  • 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.
  • 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
  • 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
  • UTP cable Unshieled Twisted Pair: UTP
  • UTP Unshieled Twisted Pair
  • 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.
  • the digital high definition image signal is converted into an analog high definition image signal
  • 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
  • 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,
  • the analog high-definition video signal is amplified to compensate for the signal attenuation generated during transmission
  • 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.
  • the first repeater and the second repeater n-repeaters had to be installed at every 200m interval of the coaxial cable.
  • 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.
  • 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.
  • 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.
  • FIG. 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.
  • FIG. 5 is a schematic diagram showing an overall configuration according to another embodiment of the present invention.
  • FIG. 6 is a schematic diagram showing an overall configuration according to another embodiment of the present invention.
  • FIG. 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,
  • 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,
  • the analog high definition video signal is amplified to compensate for the signal attenuation generated during transmission.
  • the analog high definition image signal is converted into a digital high definition image signal
  • 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.
  • 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.
  • 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.
  • FPGA field programmable gate array
  • 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.
  • HD Digital High-definition
  • 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.
  • 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.
  • 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).
  • the analog high definition video signal is amplified to compensate for the signal attenuation generated during transmission. do.
  • 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 modifies the signal attenuation compensation 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 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.
  • TX transmission unit
  • HD-class video digital high-definition
  • UTP cable UTP cable
  • 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.
  • ISP image signal processor
  • TX transmitting unit
  • 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.
  • 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 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 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.
  • FPGA field programmable gate array
  • 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.
  • TX transmission unit
  • HD-class video digital high-definition
  • 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.
  • 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.
  • 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 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 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.
  • FPGA field programmable gate array
  • 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. 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.
  • HD-class video 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 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.
  • FPGA field programmable gate array
  • 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 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).

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Abstract

La présente invention se rapporte à un appareil permettant de transmettre un signal d'image numérique de haute qualité (haute définition (HD)) sur une longue distance à l'aide d'un câble à paire torsadée blindée (UTP pour Unshielded Twisted Pair). L'appareil est caractérisé par le fait qu'il fonctionne au moyen des étapes consistant à : transférer un signal d'image numérique de haute qualité photographié par un appareil de prise de vues de haute définition (HD) directement à un premier répéteur d'une partie de transmission pour sortir un signal d'image numérique HD-SDI comme signal de BT 1120, le signal d'image étant amplifié de sorte à compenser une atténuation du signal ; transférer le signal d'image numérique de haute qualité compensé du premier répéteur à un convertisseur numérique/analogique (N/A) afin de convertir le signal d'image numérique de haute qualité en un signal d'image analogique de haute qualité ; transférer le signal d'image analogique de haute qualité du convertisseur N/A à un réseau prédiffusé programmable par l'utilisateur (FPGA pour Field Programmable Gate Array) d'un semi-conducteur qui se compose d'un élément logique programmable et d'une ligne interne programmable afin de séparer le signal d'image analogique de haute qualité en un signal de luminance et un signal de chrominance tout en compensant une atténuation du signal d'image ; transférer le signal d'image analogique de haute qualité corrigé du réseau FPGA à un premier amplificateur différentiel pour amplifier le signal d'image analogique de haute qualité en une paire d'un signal + et d'un signal - transmis à travers un câble UTP sur une distance allant de 2 à 3 km ; faire en sorte qu'un second amplificateur différentiel d'une partie de réception de signal amplifie le signal d'image analogique de haute qualité reçu par le câble UTP de sorte à compenser une atténuation du signal d'image analogique de haute qualité qui s'est produite pendant la transmission ; transférer le signal d'image analogique de haute qualité amplifié du second amplificateur différentiel à un convertisseur analogique/numérique (A/N) pour convertir le signal d'image analogique de haute qualité en un signal d'image numérique de haute qualité ; transférer le signal d'image numérique de haute qualité amplifié du convertisseur analogique/numérique (A/N) à un second réseau FPGA pour corriger le signal d'image numérique de haute qualité de sorte à compenser une atténuation du signal ; transférer le signal d'image numérique de haute qualité corrigé du second réseau FPGA à un second répéteur afin de reproduire électriquement le signal d'image numérique de haute qualité corrigé tout en compensant une atténuation du signal ; et transférer le signal d'image numérique de haute qualité compensé du second répéteur à un enregistreur vidéo numérique pour afficher l'image sur un moniteur.
PCT/KR2014/001449 2013-02-22 2014-02-22 Appareil permettant de transmettre un signal d'image numérique de haute qualité (haute définition) sur une longue distance à l'aide d'un câble utp WO2014129854A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR10-2013-0019480 2013-02-22
KR1020130019480A KR101360992B1 (ko) 2013-02-22 2013-02-22 디지털 고화질(hd급 영상) 영상신호 장거리 전송장치
KR1020130144169A KR101360996B1 (ko) 2013-11-25 2013-11-25 유티피(utp) 케이블을 이용한 디지털 고화질(hd급 영상) 영상신호 장거리 전송장치
KR10-2013-0144169 2013-11-25

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WO2014129854A1 true WO2014129854A1 (fr) 2014-08-28

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