• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
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    • 专利摘要:
    The present disclosure relates to a video surveillance system (10), comprising an outdoor surveillance camera unit (12) for capturing and at least video signals and having a first communication interface (14) for communication with a remote coded access service device (20) for securely storing surveillance information related to said video signals and having a coded access, wherein the surveillance information provided via the first communication interface (14) is encrypted in the outdoor surveillance camera unit (12) and in that an external tamper-proof power supply unit (15) is arranged to supply power and provide back-up power supply to the outdoor surveillance camera unit (12), wherein the video surveillance system (10) further comprises a code for providing coded access to said remote (20), and means for down loading said video signals from said coded access recording device (20).
    公开号:SE1651103A1
    申请号:SE1651103
    申请日:2016-08-11
    公开日:2018-02-12
    发明作者:Johansson Daniel
    申请人:Senecta Security Ab；
    IPC主号:
    专利说明:

    VIDEO SURVEILLANCE SYSTEM TECHNICAL FIELDThe embodiments described herein relate to a video Surveillance system according to the introductory part of claim 1.
    BACKGROUNDVideo surveillance systems are known to include video surveillance cameras and often surveillance monitors are connected to the surveillance cameras via network.
    The term “video surveillance system” normally means a system being able to survey and control a surveillance area indoors or outdoors by means of video cameras.
    A simple video surveillance system can comprise only one video camera, but often aplurality of video cameras are provided. Typically, the video cameras together canprovide a plurality of images covering the same surveillance area, often transmittedsimultaneously to an operator for “manual” checking. But, manual checking is oftencombined with recording to be able to check time stamped events that have occurred.
    Today, there are also video surveillance systems, typically being more cost-effective,in which a centrally located video surveillance central covering multiple surveillanceareas, often for different customers, have operators checking a set of monitors for different customers more or less simultaneously.
    Present video surveillance systems, however, as described above, suffer from lack ofpersonal integrity. This is particularly the case outdoors, where also law applicable inmostjurisdictions hinders legally correct video surveillance outdoors, at least withvideo recording, which of course is a significant drawback. ln reality, a requirementfor permission for legally correct video surveillance outdoors of an area is normally that the area is recognized as a criminal area.
    Also in countries being liberal to video surveillance outdoors, for instance England,there are considerable problems with the handling of recorded material, which isoften a drawback when for instance the Police requires access to relevant material recorded, for instance during a police investigation.
    Thus, there are a number of drawbacks with prior art video Surveillance systems, inparticular as regards obtaining a permission to legally set up a video surveillancesystem having one or more outdoor video cameras. One reason, for instance in ajurisdiction as in Sweden, for not being granted a permission for such a system, is that itis considered that recorded video material can be used freely of the owner of the videosurveillance system.One of the primary drawbacks of prior art video surveillancesystems is that they are capable of being tampered with or even destroyed and therefore cannot be relied upon as credible evidence, especially in a court of law.
    Another problem is that even if permission would be granted for an outdoor videosurveillance camera, a physical visit by the police or other responsible personnel, tothe camera itself is often required to be able to get access to the recorded video material, for instance in case of an incident.
    Moreover, present infrastructure available for video surveillance systems also suffersfrom problems with power supply and back-up power adapted to power outdoor CamefaS.
    Hence, there is a need to overcome at least some of the drawbacks mentioned above.
    SUMMARY According to one aspect of the present disclosure, it would be advantageous to havea video surveillance system with limited access to stored video recording of anoutdoor incident and accurate time synchronization, which could be reviewed afterthe incident or in real-time by the authorities on the scene and later by investigators, prosecutors and/orjudges to witness firsthand the incident as it actually happened.
    Additionally, according to another aspect of the present disclosure, it would beadvantageous to have a video surveillance system that could instantaneouslybroadcast live activity to authorities for instance in order that a response to the crime could be dispatched to the scene in order to determine and/or prevent the crime.
    One of the primary requisites of a secure video surveillance system is a codedaccess system providing limited access only to authorized persons, and encoding of the recorded video and possibly audio information itself in all parts of the system.
    This is necessary if the recorded information is stored onboard an outdoor camera or transmitted to a secure storage for retention by authorized persons.
    Another failure of prior art systems is lack of external synchronization so that the exact time is accurately embedded into the secure coded information.
    The above stated aspects and objects are achieved by means of a video survei|ance system according to the independent claim.
    According to one aspect, information related to captured video and/or audio isencrypted internally within an outdoor video camera unit and then transmitted to a secure service device.
    A first a survei|ance camera unit for capturing and at least video signals and having a first embodiment provides a video survei|ance system, comprisingcommunication interface for communication with a remote coded access servicedevice for securely storing survei|ance information related to the video signals andhaving a coded access. The survei|ance information provided via the firstcommunication interface is encrypted in the survei|ance camera unit, which typicallycomprises an outdoor video camera. An external tamper-proof power supply unit isarranged to supply power and provide back-up power supply to the survei|ancecamera unit. The video survei|ance system further comprises a code for providingcoded access to the remote coded access service device, and means for down- loading said information from the coded access service device. ln one embodiment, information related to captured video and/or audio is encrypted internally within the outdoor survei|ance camera unit and stored therein.
    According to an embodiment, the survei|ance camera is coupled to an encryptionunit arranged to encrypt the video signals, including image and sound, recorded andprovide encrypted survei|ance information via the first communication interface. The encryption unit may be provided as a separate unit to the video camera.
    According to an embodiment the external tamper-proof power supply unit is arranged inside a building comprising parts of the survei|ance system.
    According to an embodiment, the external tamper-proof power supply unit is arranged outside a building comprising parts of the Surveillance system.
    An advantage of certain embodiments described herein is that information related tocaptured video and/or audio is encrypted already internally within the surveillancecamera unit. ln this way, not even the owner of the video surveillance system can usethe captured and recorded video material freely, which is in line with many presentjurisdictions as in Sweden, for instance. This solves the problem with providing acomplete solution to the problem of providing a secure outdoor environment without influencing the personal integrity.
    Another advantage of the inventive video surveillance system is that the captured andrecorded video being always encrypted cannot be be tampered with, and therefore be relied upon as credible evidence. ln another embodiment, the encrypted captured and recorded video material can betransmitted in real time and/or from stored files by wireless transmission to authoritiesor to an off surveillance camera unit storage site. Preferably the transmission link is a satellite up-link down link system.
    The first is an advantage in case there is an immediate need for real-time video andpossibly sound, for instance in case of serious crime taking place. The authorities may then request wireless real time transmission and in real-time control resources.
    Further advantages and features of embodiments of the present invention will becomeapparent when reading the following detailed description in conjunction with the drawings.
    BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic block diagram of a video surveillance system in which someembodiments of this disclosure are implemented, wherein power supply is inside acompany network, typically a physical unit such as a building, arranged to providepower via the first communication interface, via a communication link, for instance by means of Power over Ethernet (POE); Fig. 2 is a schematic block diagram of a video Surveillance system in which someembodiments of this disclosure are implemented, wherein power supply is providedoutside the company netvvork (building); FIG. 3 is a schematic block diagram of a video surveillance system in which someembodiments of this disclosure are implemented, wherein power supply is outsidethe company network (building) and communication is provided via mobile network,and FIG. 4 is a detailed schematic block diagram of a surveillance camera unit according to one embodiment of this disclosure.
    DETAILED DESCRIPTION The present invention will now be described more fully hereinafter with reference to theaccompanying drawings, in which different exemplary embodiments are shown. Theseexemplary embodiments are provided so that this disclosure will be thorough and complete and not for purposes of limitation.
    Fig. 1 embodiments of this disclosure may be implemented. illustrates an example of a video surveillance system in which some As illustrated in FIG. 1, the surveillance system 10 comprises at least one surveillancecamera unit 12, herein a video camera having encryption as schematically illustratedby the wording “CRYPTO CAIVI", in the drawings, but is not limited to only one. Thesurveillance camera unit 12 according to this embodiment comprises an outdoorvideo camera provided for outdoor use (schematically illustrated by the wording“OUTDOOR”) and provided for capturing and recording at least video signals, butpossibly also audio and covering an area of surveillance S. The surveillance cameraunit 12 is mounted, for instance on a façade of a building, for surveillance of the areaof surveillance S and can be of any suitable conventional type, such as a CCD-camera. The visible part of the camera can be of cupola-type having built-in IR-illumination for improved image-quality or of so-called ”pin-hole” type for hiddenmounting inside a facade of a building or the like. Typically, it is not possible to see ifthe camera of the surveillance camera unit is encrypted or not, since the camera itself may by any conventional suitable camera.
    Video and sound is encrypted directly in the surveillance camera unit 12 to hinder unauthorized persons to access the information related to the captured and recorded video and possibly sound by the Surveillance camera unit 12. The encryption isprovided all the way to an authorized end-user via a secure (secure againsttampering or accessing by unauthorized persons) remote coded access device 20such as a communication central operated by the police or the like and such that that the personal integrity can always be preserved.
    Herein, the term “surveillance camera unit 12", means that the camera and the encryption circuitry of the camera unit 12 may be physically separated entities, butstill being considered as one surveillance camera unit 12. The encryption circuitrymay be provided for instance in an intelligent emergency sign, as disclosed below.Then a cable between the camera and the encryption circuitry has to be protected against tampering. lf the cable is tampered with, no information will be transmitted. ln one embodiment, as illustrated in FIG. 1, information related to captured videoand/or audio is encrypted internally within the outdoor surveillance camera unit 12(This is illustrated by the label “CRYPTO-CAM” in FIG. 1).for further transmission to asecure remote coded access device 20, herein service server (This is illustrated bythe by the wording “SERVICE SERVER”). The term "remote" means remote from the surveillance camera. ln this embodiment, the outdoor surveillance camera unit 12 is mounted outdoors toa building (schematically illustrated by the wording “INDOOR” indicating indoors inrelation to the building and “OUTDOOR” indicating outdoors in relation to thebuilding) and is pointed in a forward direction as seen in FIG. 1. The surveillancecamera unit 12 may alternatively be hidden. The video camera of the surveillancecamera unit 12 is typically provided with a wide angle, infra-red lens, with a motorizediris to increase the operating light range of the video camera. The video cameraemployed typically has a minimum resolution of, for example, 300 times 200 pixels,has infra-red capabilities and preferably runs up to 30 frames per second. The videocamera preferably employs CCD such that night vision by infrared optics is improved.The surveillance camera unit 12 may also advantageously include a microphone (notshown) for capturing, and possibly recording sound from an area of interest. Thearea of interest for recording sound might be the area of surveillance S, but can alsobe another area of interest, for instance a larger area, or a smaller area. To be ableto combine video, but also sound is a great advantage since sound may be used forrecognizing for instance a dialect spoken, or when combined with a time stamp, when an explosion took place, and in what direction for instance.
    The surveillance camera unit 12 has a first communication interface 14 forcommunication via a communication network, or link, with the remote coded accessservice device 20 for securely storing information related to the video and possibly audio signals and having a coded access.
    Typically, the encrypted surveillance camera unit 12 sets up an encryptedcommunication link 18 to the remote coded access service device 20 already whenthe surveillance camera unit 12 is connected to a network 19 related to the system10, which network 19 can be a company network, LAN, (FIG: 1 and FIG. 2) or a wireless network, such as a mobile network (FIG. 3), or a combination thereof. ln this way, already present infrastructure such as the company network 19 includingfirewalls, switches (GBE switch) etc. can be employed. This is environmentallyimportant since no new, separate video surveillance systems and transmissioninfrastructure has to be installed. The system 10 may also use and be combined withother present infrastructure and structures for network handling, power supply,maintenance and access systems such as door locks (as disclosed in the Swedishpatent SE-C2-537 077 for instance), emergency signs (provided they are intelligentas disclosed in Swedish patent SE-C2-536 311 for instance), company alarmsystems etc. Since the system 10 can be combined with present infrastructure, theinvention provides practical and economic advantages. But, important is that thesurveillance information provided via the first communication interface 14 isencrypted already in the surveillance camera unit 12 (which may in someembodiments be separated into multiple entities as disclosed above) and remains encrypted in the remote coded access service device 20.
    The information transmitted can include one or more of the following: status, at whattime transmission of the captured video and sound to the remote coded accessservice device 20 shall occur, typically during low data traffic time such as during night.
    An external tamper-proof power supply unit 15, typically provided indoors (FIG. 1), isarranged to supply power and provide back-up power supply to the outdoorsurveillance camera unit 12. The tamper-proof power supply unit 15 can becombined with network connection means using conventional communication protocols such as TCP/IP, or alternatively, or in combination with a cellular network connection, power supply and back-up power in case of power failure. Power canalso be supplied via the network using TCP/IP for instance by means of POE (PowerOver Ethernet) as illustrated in FIG. 1. A video monitor (not shown) can be connectedto the surveillance unit camera 12 by means of a video online link, for instanceprovided by means of the communication link 18, to display the scene or incidentcurrently being photographed by the video camera 12 through a monitor and/ortransmit the image to an off building site through a mobile network. The latter isillustrated in FIG. 3. Alternatively, the tamper-proof power supply unit 15 can bemounted outdoors in a separate locked and tamper-proof enclosure. This is schematically illustrated in FIG. 2.
    The service centre 20 comprises a service centre, such as a computer server, forinstance a Video Management System Server (VMS-server), in which computerprograms such as scripts can be implemented by a person skilled in the art of programming.
    Typically, the service centre 20 receives encrypted images and possibly sounds provided by, or sent from, the surveillance camera unit 12, via the first interface 14.
    The video surveillance system 10 further comprises a code (not illustrated) forproviding coded access to the remote coded access service device 20, and meansfor down-loading (not illustrated) the information from the coded access device 20.The coded access device 20, herein the service centre, is the only place wheredecryption can be performed and under certain well defined circumstances, and forlimited zones, corresponding to areas of surveillance S only, which is required for thepersonal integrity to be preserved complying also with jurisdictions.in strict countriesin this regards. This is a considerable advantage compared to prior art outdoor videosurveillance cameras and probably the only reason to get allowance for an outdoor video camera of a surveillance system.
    The code can be a code for providing coded access by an authorized user such aspolice and military operators, to one or more zones S. The means for down-loadingthe encrypted information can be an authorization code permitting access and circuitry therefore.
    Authorized users such as police and military having a particular soft-ware installed can then request connection from a so-called communication central, wherein typically each city or the like is divided into zones. An advantage of having zones isto limit the amount of information being available to an operator (of the service centre20) at the same time. Certain users, for instance operators, have access to a number of zones, whereas certain users have limited access only.
    One reason to using zones is to delimit the amount of information presented on ascreen to the operators of the communication central. lf, as an example, an alarm, orinformation about an incident, is transmitted by phone, or by an automatic alarm,from a place within a particular zone, say” zone 27”, an operator of thecommunication central, which communication central for the sake of simplicity maycorrespond to the service center 20, will decide if the system 10 should be used (i. e. to access surveillance information) or not.
    To be able to “open”, i. e. to request connection to the camera unit 12 to receive real-time information or to access recorded video related to zone 27, typically twooperators within the communication central 20 have to enter their own personal codeto the soft-ware running the application for coded access. The entering of thepersonal codes is stored in an event memory including the reason to why the zone27 should be opened. How zone 27 has been opened this is indicated on the screenof the communication central in some way, for instance by a coloured pin having afirst colour. When zone 27 is open all encrypted out door cameras 12 are shown inthis first colour and if the also have sound this is illustrated in a second colour. lndoor cameras are represented by a third colour. One reason to be able to see alsoindoor cameras is that it is possible to follow a crime also indoors, for instance if thecrime continues indoors. lf the operator considers that the situation requires morezones, a new zone, for instance zone 26 can be opened in the same way. Thenumber of zones that can be opened is typically limited only by the size of the screen of the communication center.
    Also, check of recorded material can be performed in a corresponding way as described above in relation to zones.
    The first interface 14 can also be configured to receive control commands and otherdata input. ln this way, there is provided a video surveillance system that couldinstantaneously broadcast live activity to authorities in order that a response to acrime could be dispatched to the scene in order to determine and/or prevent the crime.
    Another advantage of some of the embodiments presented herein is that they aresimple to implement for a person skilled in the art of programming by simple scriptsfor the VMS-server.
    Now is referred to FIG. 4 schematically illustrating a block-schematic of a camera unit 12 according to an exemplary embodiment.
    The camera unit 12 may include one or more crypto-authenticating chip(s).
    Crypto-authenticating chips are well known and can be implemented by means of aprocessor CPU 40. They are designed to receive as input a first data string and, inresponse, output a second data string. When both data strings are processedtogether with a secret key, the result will show the second data string to have beenproduced by the crypto-authenticating chip or not. The second string cannot be inexpensively determined from knowing the first string without having the key.
    The secret key for each crypto-authenticating chip is securely supplied to a singleentity that cooperates with network operators, which entity operates a securedatabase and comparison service to perform the authentication for the network operators.
    The video signals generated by the image sensor 41 of the video camera 12 areconverted to digital format and synchronized, as explained below, and stored on eMMC storage 42 or a hard drive.
    The hard disk storage is preferred for large capacity. Any configured hard disk devicecan be used for example, a Seagate UDMA 8.6 GB hard drive. Additionally tape drivestorage can be used either as primary or backup. The storage medium can be analogor digital. For example, an endless tape loop or other storage medium could be used.Video storage can be VCR type with endless loop characteristics, re-writeable CDROM, computer hard drive with computer compression of video. This allows upgrading as new storage media types are produced.
    According to one embodiment, the storage 42 which has the capacity to store theinformation for 48 hours or more, records the digitized, encrypted output of the videocamera 12. The storage 42 can be controlled by a remote user to activate the storage play back recorded information, find referenced events, and decode the ll stored information and the like. This permits authorities remotely to be in full controlof the storage 42 in the camera unit 12 so that they may view information off site andmonitor current or any previously recorded incident. Preferably, a system controllerprohibits recording over a previously recorded portion of the data, prior to the drivespace being released to the system. ln this manner a permanent, non-corrupted record is retained.
    The analogue output of video camera 12 is fed to image stream 43 and audio stream 44 processing.
    According to one embodiment, when there is a need for real-time streaming of videofor instance to direct operating personnel, there is provided a camera 12 unit withelectronic memory capable of storing received data. Data is transmitted and receivedby a transceiver through standard RF modulation and demodulation techniques suchas FM (frequency modulation), AM (amplitude modulation), SSB (single side-band),PSK (phase shift keying), PCM (pulse code modulation), and the like. The transceiver is normally in a powered-down mode FSK (frequency shift keying), whereby the transceiver receives signals into memory to trigger events such aperiodic down load to secure storage. Upon the reception of user specified data, thetransceiver generates a signal as previously described to start the down loadprocedure. The transceiver can be switched between active and passive mode by reception of the appropriate code. ln the drawings and specification, there have been disclosed typical embodiments and,although specific terms are employed, they are used in a generic and descriptive senseonly and not for purposes of limitation, the scope of the invention being set forth in the following claims.
    权利要求:
    Claims (2)
    [1] 1.
    [2] 2 CLA|/IS _ A video Surveillance system (10), comprising a Surveillance camera unit (12) for capturing and at least video signals andhaving a first communication interface (14) for communication with a remotecoded access service device (20) for securely storing information related to saidvideo signals and having a coded access, characterised in that the surveillanceinformation provided via the first communication interface (14) is encrypted in theoutdoor surveillance camera unit (12) and in that an external tamper-proof powersupply unit (15) is arranged to supply power and provide back-up power supply tothe outdoor surveillance camera unit (12), wherein the video surveillance system(10) further comprises a code for providing coded access to said remote codedaccess service device (20), and means for down-loading said video signals from said coded access service device (20). _ The video surveillance system (10) according to claim 1, wherein the surveillance camera unit (12) is coupled to an encryption unit (17) arranged to encrypt thesurveillance information, including image and sound, recorded and provide the encrypted surveillance information via the first communication interface (14). _ The video surveillance system (10) according to claim 1 or 2, wherein the external tamper-proof power supply unit (15) is arranged inside a building comprising parts of the surveillance system (10). _ The video surveillance system (10) according to claim 1 or 2, wherein the external tamper-proof power supply unit (15) is arranged outside a building comprising parts of the surveillance system (10). _ The video surveillance system (10) according to claim 3, wherein the external tamper-proof power supply unit (15) is arranged to provide information and powervia the first communication interface (14), by means of Power over Ethernet(POE) or similar. _ The video surveillance system (10) according to claim 3, wherein the surveillance camera unit (12) further comprises at least one audio unit in communication with said surveillance unit (12) for monitoring areas proximate the camera (12).
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    同族专利:
    公开号 | 公开日
    SE541154C2|2019-04-16|
    EP3282695A1|2018-02-14|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US7450638B2|2003-07-21|2008-11-11|Sony Corporation|Power-line communication based surveillance system|
    AU2012100359B4|2012-03-29|2014-09-18|Vissafe Pty Ltd|A portable multi-camera surveillance and monitoring system|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE1651103A|SE541154C2|2016-08-11|2016-08-11|Video surveillance system with encryption in the camera unit|SE1651103A| SE541154C2|2016-08-11|2016-08-11|Video surveillance system with encryption in the camera unit|
    EP17185856.6A| EP3282695A1|2016-08-11|2017-08-11|Video surveillance system|
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