WO2012007979A1 - Terminal (200) de surveillance, commande et surveillance vidéo à distance doté d'une interface xdsl - Google Patents

Terminal (200) de surveillance, commande et surveillance vidéo à distance doté d'une interface xdsl Download PDF

Info

Publication number
WO2012007979A1
WO2012007979A1 PCT/IT2011/000241 IT2011000241W WO2012007979A1 WO 2012007979 A1 WO2012007979 A1 WO 2012007979A1 IT 2011000241 W IT2011000241 W IT 2011000241W WO 2012007979 A1 WO2012007979 A1 WO 2012007979A1
Authority
WO
WIPO (PCT)
Prior art keywords
remote
power supply
remote terminal
terminal
telephone
Prior art date
Application number
PCT/IT2011/000241
Other languages
English (en)
Inventor
Antonia Paris
Stefano Marchetti
Original Assignee
A Tlc S.R.L.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by A Tlc S.R.L. filed Critical A Tlc S.R.L.
Publication of WO2012007979A1 publication Critical patent/WO2012007979A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
    • H04N7/183—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a single remote source
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/10—Adaptations for transmission by electrical cable
    • H04N7/108—Adaptations for transmission by electrical cable the cable being constituted by a pair of wires
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
    • G08B13/189—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems
    • G08B13/194—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems
    • G08B13/196—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems using television cameras
    • G08B13/19654—Details concerning communication with a camera
    • G08B13/19656—Network used to communicate with a camera, e.g. WAN, LAN, Internet
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
    • G08B13/189—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems
    • G08B13/194—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems
    • G08B13/196—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems using television cameras
    • G08B13/19654—Details concerning communication with a camera
    • G08B13/19658—Telephone systems used to communicate with a camera, e.g. PSTN, GSM, POTS

Definitions

  • the present invention concerns a terminal for remote monitoring, controlling and video surveillance with xDSL interface, and relevant system.
  • the present invention concerns a remote terminal provided with camera for video surveillance connected by a telephone pair whereon the video flux on xDSL carrier and the power necessary for power supplying the same.
  • a remote terminal provided with camera for video surveillance connected by a telephone pair whereon the video flux on xDSL carrier and the power necessary for power supplying the same.
  • the invention allows therefore to make a remote terminal work for remote monitoring with an only wire (connection realised with some kilometres of telephone pairs), whereon the xDSL data signal and the supply current useful to supply the remote terminal.
  • the xDSL signal transports the data stream and the protocols of connection to the IP network.
  • the remote terminal can be achieved by its own IP address with which it can Exchange data packets relevant to video stream, audio signals, signals for ambient monitoring, stream for internet diffusion through the Wi-Fi access point and last but not the least remote control signals that will be managed by one or more control stations (PC) for video monitoring.
  • PC control stations
  • the terminal Besides the remote monitoring, it is possible to integrate the terminal with a transmitter-receiver having an interface, for example ZigBee and/or Bluetooth, useful to the remote management of smart services for digital city.
  • a transmitter-receiver having an interface, for example ZigBee and/or Bluetooth, useful to the remote management of smart services for digital city.
  • the interfaces used to afford to use local networks can be various such as for example video composite signals, Ethernet, RS485, etc.; in any case, with such means, it is not possible to cover larger than some hundreds of metres.
  • the collected information/signals can be thus used locally or conveyed on an infrastructural telecommunications network after a suitable treatment and interfacing.
  • the patent document WO 03/026305 discloses an apparatus for the remote monitoring wherein the remote terminal comprises a gateway to which a camera is connected and optionally sensors in a wireless way, all ones co-operating in order to identify the situation to which an alarm must follow.
  • the terminal is connected by a high speed connection to a security server and through the last to the monitoring client by a data network.
  • the supply of the remote terminal is like in the above described prior art, and no problems are described in this connection.
  • EP0157460 A2 illustrates the functioning of a remote surveillance system on telephone pair, wherein an only video signal is transmitted in analogical way (i.e. in basic band up to 5 MHz). In these frequency bands, the telephone pair presents bad electrical characteristics and for this reason line regenerators and equalizators are used to reconstruct the video signal after each line length. In the specification, no mechanisms of camera supply and/or line regenerators are mentioned/claimed, therefore this supply occurs by single local sources as in the prior art.
  • the system of EP0157460 A2 is a closed system since the images captured by the camera can be seen only on a site, by a particular monitor. It is mentioned the presence of a controlled signal towards the camera (direction opposite to the video signal) and an example of AC signal of the FSK is given for the control of the camera (for example: PAN, TILT, ZOOM, etc.), which is generated by the control room where the monitor is placed. It is further provided a DC camera control signal.
  • Remote terminal for remote monitoring comprising at least a camera for video surveillance and ambient monitoring, characterised in that it comprises connection means to an only telephone pair, said connection means being suitable to extract from the signal carried by said an only telephone pair at the same time the voltage needed to the remote power supply of the remote terminal and an xDSL signal for the communication with a central unit.
  • the remote terminal at least a Wi-Fi and/or ZigBee access point for third users is integrated, which is suitable to realise, by said xDSL signal, a data connection to said a central unit that is independent from the connection of said at least a camera.
  • the remote terminal further comprises the following elements:
  • a microprocessor that controls the functions of the remote terminal and elaborates signals to be sent to said an only telephone pair.
  • the remote terminal further comprises:
  • the remote terminal further comprises:
  • ADC and DAC converters for the interfacing to said microphone and monitoring loudspeaker
  • a remote monitoring system comprising one or more remote terminals according to the invention, provided with video surveillance and ambient monitoring camera, characterised in that it further comprises:
  • a remote power supply block comprising one or more remote power supply modules and a control module of said one or more remote power supply modules
  • said an only telephone pair providing at the same time the voltage needed for the power supply of the corresponding remote terminal and a xDSL signal for the communication between said corresponding remote terminal and a central unit, the xDSL signal being provided by a suitable DSLAM unit to said remote power supply block.
  • At least a Wi-Fi e/o ZigBee access point for third users is integrated, which is suitable to realise, by said xDSL signal transmitted by said an only telephone pair, a data connection to said central unit that is independent from the connection of said camera.
  • the system comprises, for each remote terminal of said one or more remote terminals, a further telephone pair connecting the remote terminal to said a corresponding remote power supply module, said a further telephone pair providing a further voltage for the power supply of the remote terminal.
  • said DSLAM unit is a local unit connected to a central telephone exchange which in turn is connected to an IP network infrastructure.
  • said DSLAM unit, and said remote power supply block are integrated to a telephone exchange connected to a IP network infrastructure.
  • the system further comprises a back panel for mutually connecting said one or more remote power supply modules, each remote power supply module comprising:
  • a plurality of state sensors for the monitoring of the electric state of the remote power supply module and the remote terminal;
  • a microprocessor with gates for the reading of the sensors of said plurality of sensors and management of the remote power supply module.
  • the system further comprises: A second output line to which said a further telephone pair is to be connected;
  • a high-pass filter for the injection of the remote power supply in said second output line is provided.
  • said plurality of state sensors comprises:
  • An overvoltage sensor for the control of the maximum voltage injected in the telephone pair by the DC/DC converter
  • a line current sensor that measures the exceeding of an upper or lower threshold for the output current
  • a sensor of presence of a remote reference system that is present in the remote terminal by the voltage drop as measured on a second reference resistor.
  • a remote power supply module for the remote power supply in a system according to the invention, characterised in that it comprises the relevant elements listed above according to the invention.
  • figure 1 shows a schematic black diagram of the implemented system for private (stand-alone) scenarios, according to the invention
  • figure 2 shows a schematic block diagram of the implemented system for infrastructural scenarios, according to the invention
  • figure 3 shows the model structure of the remote supply block according to a preferred embodiment of the invention
  • figure 4 shows a circuit scheme of a remote supply section according to a preferred embodiment of the invention
  • figure 5 shows the cultural module of a remote supply section as illustrated in figure 4, according to the invention
  • FIG 6 shows a more detailed block diagram of the remote terminal that is remote supplied according to a preferred embodiment of the invention.
  • the system according to the invention is composed by two apparatuses:
  • One or more remote terminals 200 are One or more remote terminals 200;
  • a remote electric feeder with xDSL splitter 100 A remote electric feeder with xDSL splitter 100.
  • FIG 1 a scenario for installation of the stand-alone type on a private site (hospital, industrial area, historical centre, sports centre, residential area, etc.) is illustrated.
  • the remote terminals 200 are installed in the strategic points to be monitored whilst the remote electric feeder block 100 and the mini-DSLAM 500 are installed in a room/cabinet that owned by the customer.
  • the mini-DSLAM 500 on one hand generates the xDSL streams 350 necessary to connect to the remote terminals 200 (through the 100), and on the other hand guarantees the connection 850 towards the telephone exchange 800 (for example SGU) useful to the connection towards the IP network infrastructure 700 (Internet).
  • the telephone exchange 800 for example SGU
  • connection to the telephone exchange 850 can be for example realised by an optical connection, a radio bridge, a multi-pair line ShDSL or a simple ADSL access.
  • the DSLAM 550 of the telephone exchange (connected to the infrastructural network 700) provides the xDSL streams 350 to the remote terminals 200 through the remote electric feeder 100.
  • the solution according to the invention provides the remote supply of the remote terminals 200 through the same line 300 that has been used for the transportation of the xDSL communication channel.
  • the utilised physical line is the classical telephone pair 300 that supports at the same time the remote supply voltage and xDSL technology data channel.
  • an electronic monitoring system and/or Wi-Fi and/or ZigBee access point has few plant constraints and can be installed in more than one strategic position provided the use of the only telephone pair.
  • a plant scheme is represented in figures 1 and 2, wherein one can see the low-consumption remote terminal 200 for the remote monitoring that has integrated the Wi-Fi access point, the telephone pair 300 and the block of the multi-channel remote electric feeder 100, which, besides generating the power supply, injects on the lines also the xDSL signals 350 coming from the telephone exchange 800 of the telecommunication provider or from the mini-DSLAM 500 of the private network.
  • the remote electric feeder block can take energy from a battery 600 of telephone exchange at 48 V DC, or from a DC source, or from the supply network at 230 V AC.
  • the block of the remote electric feeder is composed by a plurality of functional modules that are electrically interconnected through a back panel 191 (represented schematically in figure 4) and precisely:
  • Control module 150 for the supervision of the line modules 110 and the alarms management
  • the line module 110 is represented, which includes the conversion circuits DC/DC 111 for the generation of the remote DC supply, the high-pass filters 112 for the injection of the xDSL signal on the "Line a" 113 and the low-pass filters 127 for the injection of the remote power supply. It is further included the connection of a second pair, "Line b" 114, whereon the only remote power supply is applied (through the low-pass filters 127) to increase the power delivered to the remote terminal 200 and therefore to double the length of the line 300 (remote terminal 200 connected to two pairs 300).
  • the line module contains the following circuits:
  • the microprocessor 122 with in/out ports for reading the sensors 117,118,129,123 and the management of the remote power supply
  • the high-pass 112 and low-pass 127 filters for the injection of the xDSL signals and the remote power supply respectively.
  • the parameters that can be monitored and managed by the microprocessor 122 are:
  • the line currents 300 (line pairs xDSL+DC 113 and DC 114) are detected by the current sensor 129 that measures the overcurrent and the undercurrent;
  • the circuit 123 verifies the presence of the resistance R-segnature that is in the remote terminal 200, by the voltage fall as measured on the reference resistance RS.
  • the microprocessor 122 acquires the information extracted from the various sensors 117,118,129,123 through a A/D (Analogical/Digital) converter, and these are:
  • the microprocessor 122 executes the visualization of the alarms by leds 125 and manages also the communication with the control module through a serial interface 119.
  • the DC/DC 111 converter is rapidly switched off, which then switches on performing the detection 123 of the R- segnature;
  • RS internal resistance
  • every line connection 113 and 114 has a solid-state protection 120 that protects the internal circuits from the effects of the fulgurations induced on the line 300.
  • control module 150 connected to the back panel 191 , collects through a communication interface 151 the information relevant to the functioning state of the line modules that are present in the modular structure represented in Figure 3.
  • the microprocessor 152 that is in this module collects the information on the functioning state of the line modules 110 and makes them available on the Ethernet maintenance interface 155 that can be interrogated locally or reached remotely by an IP address.
  • the control module is power supplied by an own DC/DC power supply 153 that obtains the voltage useful to its own functioning starting from the 48 Vdc voltage present on the back panel 191.
  • the relevant hot-swap circuits 154 are always present.
  • the remote terminal 200 for the remote monitoring is an electronic apparatus that finds place within a specific container to be installed inside buildings or external spaces.
  • the remote terminal 200 can be powered and exchange information upstream and downstream with the communication network.
  • the content of the information concerns the remote monitoring, the remote management (for example by means of ZigBee technology) of the site and the diffusion of the Wi-Fi signal through the integrated access point.
  • a DC/DC converter 220 isolated between primary and secondary for the power supply of the remote terminal
  • the microprocessor 250 that controls the functions of the remote terminal and elaborates the signals towards the xDSL line 300;
  • the video codec 270 for the translation of the video signal for the conversion of the video signal
  • ADC and DAC converters 280 for the interfacing of the monitoring sensor set 281 and 282 (microphone and loudspeaker);
  • the SD Card 271 for the storing of the information detected by the camera and/or sensor set.
  • the DC/DC converter 220 is realised according to a step-down typology with transformer isolation, as required for the TNV3 circuits according to the regulation EN60950, being highly likely that the the remote terminal connection pair is exposed to induced currents and likely fulguration.
  • the low-voltage output (SELV) of 5Vdc supplies all the circuits of the terminal 200.
  • the terminal presents a typical resistance of lOOKOhm (R-segnature) 227 useful to the recognition and the individuation of the remote terminal for the subsequent voltage powering of the line 300 (security of the lines maintenance personnel).
  • the high efficiency of the converter guarantees a low consumption of the remote terminal 200 that results in the possibility of having very long lines 300.
  • circuital configuration the functioning modality and the utilized components contribute to obtain a low power absorption.
  • the xDSL microprocessor 250 integrates all the analogical and digital functions needed for the xDSL line conversion, the data digital treatment and the interconnection towards the other devices present in the terminal.
  • the microprocessor 250 is connected to the analogical line xDSL through a specific line interface 225 provided with a line transformer that adapts the impedances and guarantees the isolation of TNV3 level required by the security regulations EN60950 for the security of the apparatuses.
  • the wireless module 260 of the access point is consistent with the IEEE 802.11 standard and is provided with two external antennas 265 that operate in field diversity. It is connected to the processor through a digital interface.
  • the solid-state sensor of the camera 275 is connected, through a digital interface, to the Video Codec 270 that elaborates, codifies, encrypts and packetizes over IP the video stream before being sent by the xDSL microprocessor 250 towards the line 300.
  • the Codec 270 converts also the PTZ control signals sent over IP that are useful for the PAN-TILT-ZOOM traverse of the camera 275.
  • Such information is exchanged through a serial interface UART 274 before being sent to the circuits/interlockings of the motors of the traverse set.
  • the Codec 270 manages also the storing of the video stream on a SD Card 271 for possible recording that are stimulated or programmed by a software residing in the flash 252.
  • digital analogical converters 280 are provided in order to interface the relevant sensors 281 , 282 to microprocessor 250.
  • a ZigBee (or Bluetooth) transmitter-receiver 290 is inserted which has an antenna 291 that, according to standard IEEE 802.15.4 functions as Coordinator and/or Router and/or End Device and exchanges information towards the complementary devices installed in the systems to be monitored/controlled that are present in the vicinity of terminal 200.
  • the remote monitoring system according to the invention has a strength point in the possibility of powering remote terminals by telephone pairs 300 at distances of some kilometres.
  • the maximum achievable distance depends on the following factors:
  • the maximum utilisable voltage is imposed by the security regulations EN60950 which limit such a value to +/- 60Vdc with respect to ground. Considering the peak values of the xDSL signal and the usual tolerance, one can fall to +/- 55Vdc.
  • the above-mentioned lengths of the line 300 can be doubled by utilizing a second line pair (line b) to supply in parallel the remote terminal 200.
  • the remote terminal has a data connection by xDSL technology;
  • remote terminal 200 integrates in its interior manifold functionalities concerning the video surveillance 275, wireless services diffusion 260, 290 and the acoustic/ambient remote monitoring 281 , 282 by means of the use of dedicated sensors;
  • the remote electric feeder that generates a balanced voltage on the line pair 300 that is able to guarantee the transmission quality required on the xDSL channel;
  • control of the maximum fed voltage overvoltage detection
  • All the line remote electric feeder 110 are managed locally or remotely (Web) by an integrated control module 150;
  • the whole remote terminal is entirely managed via WEB by IP mapping.
  • This new low-consumption remote terminal 200 integrating therefore the functions of wireless diffusion and remote monitoring and remote management of intelligent services for the digital city by a ZigBee wireless connection, optimises also the plant installation and maintenance costs and tends to compensate, in some areas, the phenomenon of the "Digital Divide".
  • a digital coding of the video signal for example H264, Motion JPEG.MPEG-4, etc.
  • xDSL transmission channel
  • IP protocol IP protocol
  • the Applicant was able to test that, in systems like that described in EP 0 157 460 A2, the remote powering can only be utilized if one renounces to the line maximum length, and having a strong criticality of the system functioning and only after having equipped the regenerators with special electronic devices. These electronic devices must show an high impedance between input and output of the regenerator (not to attenuate the video signal and make the functioning of the amplifier/equalizer in the regenerator instable) and at the same time make the remote powering control circulate with the minimum voltage fall (minimal current leakages).
  • An electronic device suitable to this end could be a trivial switch that for video frequencies bands (MHz) is capable of showing a high impedance with a low internal resistance (minimum voltage fall on the current of remote powering).
  • MHz video frequencies bands
  • minimum voltage fall on the current of remote powering This complicates if, as described in EP 0 157 460 A2, one utilizes an a.c. control signal to control the camera, in a frequency band that is lower than the video signal.
  • an a.c. control signal to control the camera, in a frequency band that is lower than the video signal.
  • to have a high impedance between input and output of the regenerator one needs and a larger inductor that will present inevitably a larger internal resistance and therefore will create a voltage fall on the remote powering current.
  • specific active circuits would be needed, which however are not yet known.
  • the first type of solution is the remote monitoring together with a d.c. control signal with ON/OFF coding.
  • the coding of the control signal will be realised by a sequence of ON and OFF of the d.c. signal (presence/absence of the current) that will concern also the remote powering and therefore the functioning of the camera and all the line regenerators.
  • the existing capacities between the line conductors (200 to 300 nF/Km) and those existing at the same regenerators it came out to be very difficult to make such control information arriving to the camera without damaging the correct functioning of the camera.
  • the second tested solution has been that of the remote powering together with a control signal with voltage levels coding.
  • This second mode links the control signal to sudden level variations in the voltage detected by the camera. For example, to a determined line voltage difference (defined along time) a precise control/operation on the camera could correspond. Even in this case, the criticalities are different and concern the malfunctions of the camera associated to the powering variations and to the possible erroneous levels detections connected to the voltage falls on the line (loads and ambient conditions variations).

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Burglar Alarm Systems (AREA)
  • Alarm Systems (AREA)
  • Telephonic Communication Services (AREA)

Abstract

La présente invention concerne un terminal distant (200), servant à une surveillance à distance, qui comprend au moins une caméra servant à la surveillance vidéo et à la surveillance ambiante. Ledit terminal est caractérisé en ce qu'il comprend un moyen de connexion à une seule paire téléphonique (300), ledit moyen de connexion étant approprié pour extraire simultanément, du signal transporté par ladite paire téléphonique unique (300), la tension nécessaire à l'alimentation électrique à distance du terminal distant (200) et un signal xDSL destiné à la communication avec une unité centrale. La présente invention concerne en outre un système de surveillance à distance comprenant un ou plusieurs terminaux distants selon l'invention, équipés d'une caméra de surveillance vidéo et de surveillance ambiante. Ledit système est caractérisé en ce qu'il comprend en outre : - un bloc d'alimentation électrique à distance (100) comprenant un ou plusieurs modules d'alimentation électrique à distance (110) et un module de commande (150) dudit ou desdits modules d'alimentation électrique à distance (110) ; - une seule paire téléphonique (300) pour chaque terminal à distance qui connecte ce dernier à un module d'alimentation électrique à distance correspondant (110) dudit ou desdits modules d'alimentation électrique à distance (110), ladite paire téléphonique unique (300) fournissant simultanément la tension nécessaire pour l'alimentation électrique du terminal distant correspondant (200) et un signal xDSL pour la communication entre ledit terminal distant correspondant (200) et une unité centrale, une unité DSLAM appropriée (500, 550) fournissant le signal xDSL audit bloc d'alimentation électrique distant (100).
PCT/IT2011/000241 2010-07-13 2011-07-11 Terminal (200) de surveillance, commande et surveillance vidéo à distance doté d'une interface xdsl WO2012007979A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITRM2010A000381 2010-07-13
IT000381A ITRM20100381A1 (it) 2010-07-13 2010-07-13 Terminale per telemonitoraggio, telecontrollo e videosorveglianza con interfaccia xdsl.

Publications (1)

Publication Number Publication Date
WO2012007979A1 true WO2012007979A1 (fr) 2012-01-19

Family

ID=43479885

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT2011/000241 WO2012007979A1 (fr) 2010-07-13 2011-07-11 Terminal (200) de surveillance, commande et surveillance vidéo à distance doté d'une interface xdsl

Country Status (2)

Country Link
IT (1) ITRM20100381A1 (fr)
WO (1) WO2012007979A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0157460A2 (fr) 1984-04-05 1985-10-09 Philips Electronics Uk Limited Système de télévision à circuit fermé
WO2003026305A1 (fr) 2001-09-18 2003-03-27 @Security Broadband Corp. Systeme de securite video
US20050248653A1 (en) * 2004-05-07 2005-11-10 Jack Hoang Camera device with unitary interface cabling
US20090245268A1 (en) * 2008-03-31 2009-10-01 Avp Ip Holding Co., Llc Video Router and Method of Automatic Configuring Thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0157460A2 (fr) 1984-04-05 1985-10-09 Philips Electronics Uk Limited Système de télévision à circuit fermé
WO2003026305A1 (fr) 2001-09-18 2003-03-27 @Security Broadband Corp. Systeme de securite video
US20050248653A1 (en) * 2004-05-07 2005-11-10 Jack Hoang Camera device with unitary interface cabling
US20090245268A1 (en) * 2008-03-31 2009-10-01 Avp Ip Holding Co., Llc Video Router and Method of Automatic Configuring Thereof

Also Published As

Publication number Publication date
ITRM20100381A1 (it) 2012-01-14

Similar Documents

Publication Publication Date Title
US9300143B2 (en) High bandwidth data transport system for use in a smartgrid
KR102061954B1 (ko) 어드레싱가능한 전기 콘센트들을 포함하는, 스마트 기기들
US7796025B2 (en) Power line communication device and method
US7064654B2 (en) Power line communication system and method of operating the same
US20130003696A1 (en) Device handing over communication session from wireless communication to powerline communication
US7746877B2 (en) Method and apparatus for communicating loss of alternating current power supply
US20110103274A1 (en) Signal repeater system arrangement for stable data communication
US20040113756A1 (en) Device and method for coupling with electrical distribution network infrastructure to provide communications
EP2601746A1 (fr) Procédé et dispositif permettant de coupler une ligne d'alimentation en courant continu à une ligne téléphonique ou à un câble coaxial
AU2017331808B2 (en) Telecommunication system and method, and components therefor
US8428466B2 (en) Carrier current communication system with infrared receiver
CN1897627B (zh) 从第一服务到第二服务的远程迁移
WO2007123650A1 (fr) Procédé et appareil d'alimentation électrique d'interface réseau via les lignes téléphoniques
US20150071429A1 (en) Power distribution for telecommunications system
WO2012007979A1 (fr) Terminal (200) de surveillance, commande et surveillance vidéo à distance doté d'une interface xdsl
CN108112273A (zh) 电量计和用于其的适配器模块
TWI520512B (zh) Network connection device and system
CN209674217U (zh) 一种基于poe供电的安防系统
KR20160036056A (ko) 역으로 전력을 공급받는 송신 디바이스
EP3331146A1 (fr) Dispositif et procédé d'alimentation électrique un équipement de technologie de l'information et de communication
KR20170002745U (ko) 파워 오버 네트워크 디바이스 및 이를 포함하는 파워 오버 네트워크 시스템
CN209402663U (zh) 一种电子配线架和布线系统
US20080175361A1 (en) Apparatus and method for coextensive operation of multiple broadband services on a local network
JP2007158900A (ja) 宅内ネットワークシステムとこのシステムに用いるｉｐ電話用アダプタ、接続ユニット及び端末モデム装置
CN105991296A (zh) 供电方法及装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11752648

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 11752648

Country of ref document: EP

Kind code of ref document: A1