WO2005041580A1 - Surveillance device with video cameras - Google Patents

Surveillance device with video cameras Download PDF

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Publication number
WO2005041580A1
WO2005041580A1 PCT/DE2004/002177 DE2004002177W WO2005041580A1 WO 2005041580 A1 WO2005041580 A1 WO 2005041580A1 DE 2004002177 W DE2004002177 W DE 2004002177W WO 2005041580 A1 WO2005041580 A1 WO 2005041580A1
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WO
WIPO (PCT)
Prior art keywords
digital video
monitor
monitoring device
video signals
pixels
Prior art date
Application number
PCT/DE2004/002177
Other languages
German (de)
French (fr)
Inventor
Klaus STÖTTINGER
Original Assignee
Deutsche Telekom Ag
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 Deutsche Telekom Ag filed Critical Deutsche Telekom Ag
Priority to EP04786889A priority Critical patent/EP1676443A1/en
Publication of WO2005041580A1 publication Critical patent/WO2005041580A1/en

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Classifications

    • 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
    • G08B13/19639—Details of the system layout
    • G08B13/19645—Multiple cameras, each having view on one of a plurality of scenes, e.g. multiple cameras for multi-room surveillance or for tracking an object by view hand-over
    • 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
    • G08B13/19678—User interface
    • G08B13/19684—Portable terminal, e.g. mobile phone, used for viewing video remotely
    • 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
    • G08B13/19678—User interface
    • G08B13/19691—Signalling events for better perception by user, e.g. indicating alarms by making display brighter, adding text, creating a sound
    • G08B13/19693—Signalling events for better perception by user, e.g. indicating alarms by making display brighter, adding text, creating a sound using multiple video sources viewed on a single or compound screen
    • 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
    • H04N7/181—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a plurality of remote sources
    • 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
    • H04N7/185—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a single remote source from a mobile camera, e.g. for remote control

Definitions

  • Video surveillance systems often have a large number of video cameras, for example up to 70, whose simultaneous display on a few monitors is problematic. Such video monitoring devices are often operated on board ships, in particular ferry and cruise ships, for safety reasons. Even when displaying four reduced images on one monitor, a large number of monitors are either required, which is often not possible due to space constraints. However, sequential display of the images for a few seconds at a time means that security-relevant information may not be recognized immediately.
  • digital video signals being able to be supplied via a communication network to at least two monitors, a plurality of reduced images being able to be displayed on a first monitor and one of the reduced images being selectable on a second monitor is shown larger.
  • the monitoring device has the advantage that images of all video cameras can be observed on one, and in the case of a very large number of video cameras, also on two or more screens, and that in the event of an abnormality on one of the images, an image with a higher resolution can be made available on at least one other monitor in a very simple manner.
  • a cost-effective implementation of the monitoring device according to the invention with inexpensive components manufactured in large quantities is possible in that the video cameras are assigned computers with suitable programs for forming the digital video signals, which have LAN interfaces, and that the communication network is a local area network (LAN).
  • LAN local area network
  • Another advantage of this embodiment is that the use of the computers, preferably personal computers, enables simple programming to suit the respective needs.
  • the digital video signals are MPEG signals and / or that the
  • the digital video signals are transmitted according to the Internet Protocol (IP).
  • IP Internet Protocol
  • Pointing device generated command are switchable that digital video signals with a lower number of pixels are transmitted to the first monitor and that a selected digital video signal with a higher number of pixels is transmitted to the second monitor.
  • the Large number of digital video signals each transmit a small amount of data, while only the selected digital video signal has a larger amount of data.
  • devices assigned to the video cameras for forming the digital video signals generate digital video signals with a higher number of pixels, that the digital video signals with a higher number of pixels are converted into digital video signals with a lower number of pixels in a computer assigned to the first monitor and are displayed on the first monitor and that a digital video signal selected with the aid of the pointing device and having a higher number of pixels is transmitted to the second monitor.
  • all digital video signals to be transmitted via the communication network have a large amount of data.
  • the choice between these two configurations depends, among other things, on the number of video cameras and the performance of the communication network - in the case of Ethernet, for example, on the transmission capacity of 10 Mbit / s or 100 Mbit / s.
  • the second embodiment has the advantage that digital video signals with a higher number of pixels are available in the entire communication network - even if they are not displayed on the first monitor.
  • the monitoring device is possible in a simple manner by using a communication network.
  • at least one further video camera and / or at least one further monitor with computer is connected via a wireless network connection.
  • the monitoring device according to the invention can be developed in such a way that sensors are assigned to the video cameras that report special events, and that means are provided which images from those video cameras, whose associated sensor reports a special event, mark it conspicuously. Marking can be done, for example, by a flashing red frame and / or an acoustic signal.
  • an image of a video camera, the associated sensor of which reports a special event is displayed larger on a further monitor. This can be the monitor on which the image selected with the pointing device is displayed or another.
  • the monitoring device according to the invention can be any monitoring device.
  • the monitoring device according to the invention can be any monitoring device.
  • Documentation purposes can also be designed such that means are provided for recording the digital video signals.
  • surveillance cameras Kl to Kn are each equipped with a personal computer (PC) and a LAN interface.
  • Programs are installed in the PC which encode digital video signals according to the MPEG format from the video signals generated by the video cameras K1 to Kn and the transmission of the MPEG signals enable a local area network comprising a router R according to the Internet protocol.
  • commands transmitted by the video cameras K1 to Kn can be received and executed over the network, for example a selection of the MPEG signals between a low and a high number of pixels.
  • the video camera Kx is also provided with a sensor S, which is represented as a microphone and registers events - in this case, noises - which are evaluated in the PC. A corresponding message is then transmitted over the network.
  • a first computer CI is connected to the network and receives the MPEG signals from all video cameras. These are displayed on the monitor M1 as reduced images of, for example, 180 x 140 pixels. In the exemplary embodiment there is space for 49 images on the screen, which is, for example, an LCD display with a size of 1280 x 1024 pixels. If necessary, information about the images, such as their location, can be displayed on the screen.
  • the surveillance person notices something in one of the pictures B1 to Bn, the person points to the picture Bx with a cursor (not shown in the figure) and actuates a mouse button.
  • the computer CI then transmits the command to the camera Kx to send the image with a full number of pixels to the computer C2, which displays the corresponding size on the monitor M2.
  • one or more monitoring devices WKl can be wirelessly connected to the network or the router R. It is also possible to transmit the images, which are shown larger on the second monitor, to other monitors or computers or other display devices, if necessary wirelessly, and to display what is shown in the
  • Drawing is shown as an example with a laptop M3 and a PDA M4.
  • a recording device REC to the network, which is shown in the drawing as a tape device, but can also be implemented in another form, for example as a hard disk memory.
  • the network has the appropriate performance with regard to the amounts of data to be transmitted, it is also possible to send MPEG signals with large numbers of pixels from all video cameras K1 to Kn and to carry out the reduction in the computer CI. After selecting one of the images by clicking the mouse, the computer C2 receives a command to receive the MPEG signals from the corresponding video camera.

Abstract

The invention relates to a surveillance device with video cameras, wherein digital video signals can be supplied to at least two monitors via a communications network. A plurality of reduced images can be displayed in a first monitor. One of the reduced images can be selected with a pointing device and shown in a larger size on the second monitor.

Description

Beschreibungdescription
Überwachungseinrichtung mit VideokamerasMonitoring device with video cameras
Video-Überwachungseinrichtungen verfügen häufig über eine große Anzahl von Videokameras, beispielsweise bis zu 70, deren gleichzeitige Darstellung auf wenigen Monitoren problematisch ist. Derartige Video- Überwachungseinrichtungen werden häufig an Bord von Schiffen, insbesondere Fähr- und Kreuzfahrtschiffen, aus Sicherheitsgründen betrieben. Selbst bei der Darstellung von vier verkleinerten Bildern auf einem Monitor werden entweder sehr viele Monitore benötigt, was aus Platzgründen oft nicht möglich ist. Eine sequentielle Darstellung der Bilder für jeweils einige Sekunden bedeutet jedoch, dass sicherheitsrelevante Informationen möglicherweise nicht sofort erkannt werden.Video surveillance systems often have a large number of video cameras, for example up to 70, whose simultaneous display on a few monitors is problematic. Such video monitoring devices are often operated on board ships, in particular ferry and cruise ships, for safety reasons. Even when displaying four reduced images on one monitor, a large number of monitors are either required, which is often not possible due to space constraints. However, sequential display of the images for a few seconds at a time means that security-relevant information may not be recognized immediately.
Mit der erfindungsgemäßen Überwachungseinrichtung ist eine besonders vorteilhafte Überwachung möglich, wobei digitale Videosignale über ein Kommunikationsnetzwerk mindestens zwei Monitoren zuführbar sind, wobei auf einem ersten Monitor eine Vielzahl von verkleinerten Bildern darstellbar ist und wobei mit einem Zeigegerät eines der verkleinerten Bilder auswählbar ist, das auf einem zweiten Monitor größer dargestellt wird.With the monitoring device according to the invention, a particularly advantageous monitoring is possible, digital video signals being able to be supplied via a communication network to at least two monitors, a plurality of reduced images being able to be displayed on a first monitor and one of the reduced images being selectable on a second monitor is shown larger.
Die erfindungsgemäße Überwachungseinrichtung weist den Vorteil auf, dass Bilder sämtlicher Videokameras auf einem, bei einer sehr großen Zahl von Videokameras auch auf zwei oder mehr Bildschirmen beobachtet werden können und dass bei einer Auffälligkeit auf einem der Bilder in sehr einfacher Weise ein Bild mit höherer Auflösung auf mindestens einem weiteren Monitor zur Verfügung gestellt werden kann.The monitoring device according to the invention has the advantage that images of all video cameras can be observed on one, and in the case of a very large number of video cameras, also on two or more screens, and that in the event of an abnormality on one of the images, an image with a higher resolution can be made available on at least one other monitor in a very simple manner.
Eine kostengünstige Realisierung der erfindungsgemäßen Überwachungseinrichtung mit preiswerten in großen Stückzahlen hergestellten Komponenten ist dadurch möglich, dass den Videokameras zur Bildung der digitalen Videosignale Computer mit geeigneten Programmen zugeordnet sind, welche LAN-Schnittstellen aufweisen, und dass das Kommunikationsnetzwerk ein lokales Netzwerk (LAN) ist.A cost-effective implementation of the monitoring device according to the invention with inexpensive components manufactured in large quantities is possible in that the video cameras are assigned computers with suitable programs for forming the digital video signals, which have LAN interfaces, and that the communication network is a local area network (LAN).
Ein weiterer Vorteil dieser Ausgestaltung besteht darin, dass durch die Verwendung der Computer, vorzugsweise Personalcomputer, eine einfache Programmierung auf die jeweiligen Bedürfnisse möglich ist.Another advantage of this embodiment is that the use of the computers, preferably personal computers, enables simple programming to suit the respective needs.
Dabei ist vorzugsweise vorgesehen, dass die digitalen Videosignale MPEG-Signale sind und/oder dass dieIt is preferably provided that the digital video signals are MPEG signals and / or that the
Übertragung der digitalen Videosignale nach dem Internet- Protokoll (IP) erfolgt.The digital video signals are transmitted according to the Internet Protocol (IP).
Eine vorteilhafte Ausgestaltung der erfindungsgemäßen Überwachungseinrichtung besteht darin, dass denAn advantageous embodiment of the monitoring device according to the invention is that the
Videokameras zugeordnete Einrichtungen zur Bildung der digitalen Videosignale zwischen kleineren Bildern mit geringerer Bildpunktzahl und größeren Bildern mit höherer Bildpunktzahl durch ein vom ersten Computer über das Kommunikationsnetzwerk übertragenes mit Hilfe desDevices assigned to video cameras for forming the digital video signals between smaller images with a lower number of pixels and larger images with a higher number of pixels by means of a transmission from the first computer via the communication network
Zeigegerätes erzeugtes Kommando umschaltbar sind, dass digitale Videosignale mit niedrigerer Bildpunktzahl zum ersten Monitor übertragen werden und dass ein ausgewähltes digitales Videosignal mit höherer Bildpunktzahl zum zweiten Monitor übertragen wird. Bei dieser Ausgestaltung wird die Vielzahl der digitalen Videosignale mit jeweils einer geringen Datenmenge übertragen, während nur das ausgewählte digitale Videosignal eine größere Datenmenge aufweist.Pointing device generated command are switchable that digital video signals with a lower number of pixels are transmitted to the first monitor and that a selected digital video signal with a higher number of pixels is transmitted to the second monitor. With this configuration, the Large number of digital video signals each transmit a small amount of data, while only the selected digital video signal has a larger amount of data.
Dagegen ist bei einer anderen Ausgestaltung der erfindungsgemäßen Überwachungseinrichtung vorgesehen, dass den Videokameras zugeordnete Einrichtungen zur Bildung der digitalen Videosignale digitale Videosignale mit höherer Bildpunktzahl erzeugen, dass die digitalen Videosignale mit höherer Bildpunktzahl in einem dem ersten Monitor zugeordneten Computer in digitale Videosignale mit geringerer Bildpunktzahl umgewandelt und auf dem ersten Monitor dargestellt werden und dass ein mit Hilfe des Zeigegerätes ausgewähltes digitales Videosignal mit höherer Bildpunktzahl zum zweiten Monitor übertragen wird. Bei dieser Ausgestaltung weisen sämtliche über das Kommunikationsnetzwerk zu übertragenden digitalen Videosignale eine große Datenmenge auf.In contrast, in another embodiment of the monitoring device according to the invention it is provided that devices assigned to the video cameras for forming the digital video signals generate digital video signals with a higher number of pixels, that the digital video signals with a higher number of pixels are converted into digital video signals with a lower number of pixels in a computer assigned to the first monitor and are displayed on the first monitor and that a digital video signal selected with the aid of the pointing device and having a higher number of pixels is transmitted to the second monitor. In this embodiment, all digital video signals to be transmitted via the communication network have a large amount of data.
Die Wahl zwischen diesen beiden Ausgestaltungen hängt unter anderem von der Zahl der Videokameras und von der Leistungsfähigkeit des Kommunikationsnetzwerkes ab - im Falle des Ethernet beispielsweise von der Übertragungskapazität von 10 Mbit/s oder 100 Mbit/s. Die zweite Ausgestaltung hat den Vorteil, dass im gesamten Kommunikationsnetzwerk digitale Videosignale mit höherer Bildpunktzahl zur Verfügung stehen - auch wenn sie auf dem ersten Monitor nicht dargestellt werden.The choice between these two configurations depends, among other things, on the number of video cameras and the performance of the communication network - in the case of Ethernet, for example, on the transmission capacity of 10 Mbit / s or 100 Mbit / s. The second embodiment has the advantage that digital video signals with a higher number of pixels are available in the entire communication network - even if they are not displayed on the first monitor.
Durch die Verwendung eines Kommunikationsnetzwerkes ist eine Erweiterung der Überwachungseinrichtung in einfacher Weise möglich. So kann beispielsweise vorgesehen sein, dass mindestens eine weitere Videokamera und/oder mindestens ein weiterer Monitor mit Computer über eine drahtlose Netzwerkverbindung angeschlossen ist. Um die Aufmerksamkeit des überwachenden Personals auf diejenigen Bilder zu lenken, die möglicherweise besondere Ereignisse wiedergeben, kann die erfindungsgemäße Überwachungseinrichtung derart weitergebildet sein, dass den Videokameras Sensoren zugeordnet sind, die besondere Ereignisse melden, und dass Mittel vorgesehen sind, welche Bilder von denjenigen Videokameras, deren zugeordneter Sensor ein besonderes Ereignis meldet, auffällig markieren. Das Markieren kann beispielsweise durch einen blinkenden roten Rahmen und/oder ein akustisches Signal erfolgen.An expansion of the monitoring device is possible in a simple manner by using a communication network. For example, it can be provided that at least one further video camera and / or at least one further monitor with computer is connected via a wireless network connection. In order to draw the surveillance personnel's attention to those images that possibly represent special events, the monitoring device according to the invention can be developed in such a way that sensors are assigned to the video cameras that report special events, and that means are provided which images from those video cameras, whose associated sensor reports a special event, mark it conspicuously. Marking can be done, for example, by a flashing red frame and / or an acoustic signal.
Zusätzlich oder alternativ kann dabei vorgesehen sein, dass ein Bild einer Videokamera, deren zugeordneter Sensor ein besonderes Ereignis meldet, auf einem weiteren Monitor größer dargestellt wird. Dies kann derjenige Monitor sein, auf dem das mit dem Zeigegerät ausgewählte Bild dargestellt wird oder ein weiterer.Additionally or alternatively, it can be provided that an image of a video camera, the associated sensor of which reports a special event, is displayed larger on a further monitor. This can be the monitor on which the image selected with the pointing device is displayed or another.
Die erfindungsgemäße Überwachungseinrichtung kann zuThe monitoring device according to the invention can
Dokumentationszwecken auch derart ausgebildet sein, dass Mittel zur Aufzeichnung der digitalen Videosignale vorgesehen sind.Documentation purposes can also be designed such that means are provided for recording the digital video signals.
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und in der nachfolgenden Beschreibung näher erläutert .An embodiment of the invention is shown in the drawing and explained in more detail in the following description.
Bei dem in der Zeichnung als Blockschaltbild dargestellten Ausführungsbeispiel sind Überwachungskameras Kl bis Kn jeweils mit einem Personalcomputer (PC) und einer LAN- Schnittstelle ausgerüstet. Im PC sind Programme installiert, welche aus den von den Videokameras Kl bis Kn erzeugten Videosignalen digitale Videosignale nach dem MPEG-Format codieren und die Übertragung der MPEG-Signale über das einen Router R umfassende lokale Netzwerk nach dem Internet-Protokoll ermöglichen. Außerdem können von den Videokameras Kl bis Kn über das Netzwerk übertragene Kommandos empfangen und ausgeführt werden, beispielsweise eine Auswahl der MPEG-Signale zwischen einer niedrigen und einer hohen Bildpunktzahl.In the embodiment shown in the drawing as a block diagram, surveillance cameras Kl to Kn are each equipped with a personal computer (PC) and a LAN interface. Programs are installed in the PC which encode digital video signals according to the MPEG format from the video signals generated by the video cameras K1 to Kn and the transmission of the MPEG signals enable a local area network comprising a router R according to the Internet protocol. In addition, commands transmitted by the video cameras K1 to Kn can be received and executed over the network, for example a selection of the MPEG signals between a low and a high number of pixels.
Die Videokamera Kx ist bei dem Ausführungsbeispiel ferner mit einem Sensor S versehen, der als Mikrofon dargestellt ist und Ereignisse - in diesem Fall Geräusche - registriert, die im PC ausgewertet werden. Eine entsprechende Meldung wird dann über das Netzwerk übertragen.In the exemplary embodiment, the video camera Kx is also provided with a sensor S, which is represented as a microphone and registers events - in this case, noises - which are evaluated in the PC. A corresponding message is then transmitted over the network.
Ein erster Computer CI ist an das Netzwerk angeschlossen und empfängt die MPEG-Signale aller Videokameras. Diese werden auf dem Monitor Ml als verkleinerte Bilder von beispielsweise 180 x 140 Bildpunkten dargestellt. Bei dem Ausführungsbeispiel finden 49 Bilder auf dem Bildschirm Platz, der beispielsweise ein LCD-Display der Größe 1280 x 1024 Bildpunkte (Pixel) ist. Gegebenenfalls können auf dem Bildschirm noch Hinweise zu den Bildern, beispielsweise deren Standort, wiedergegeben werden.A first computer CI is connected to the network and receives the MPEG signals from all video cameras. These are displayed on the monitor M1 as reduced images of, for example, 180 x 140 pixels. In the exemplary embodiment there is space for 49 images on the screen, which is, for example, an LCD display with a size of 1280 x 1024 pixels. If necessary, information about the images, such as their location, can be displayed on the screen.
Fällt der überwachenden Person an einem der Bilder Bl bis Bn etwas auf, so zeigt die Person mit einem in der Figur nicht dargestellten Cursor auf das Bild Bx und betätigt eine Maus-Taste. Daraufhin wird vom Computer CI das Kommando an die Kamera Kx übertragen, das Bild mit voller Pixelzahl an den Computer C2 zu senden, der es mit entsprechender Größe auf dem Monitor M2 darstellt.If the surveillance person notices something in one of the pictures B1 to Bn, the person points to the picture Bx with a cursor (not shown in the figure) and actuates a mouse button. The computer CI then transmits the command to the camera Kx to send the image with a full number of pixels to the computer C2, which displays the corresponding size on the monitor M2.
Bei Bedarf - also beispielsweise bei einer höheren Zahl von Kameras - können auch mehrere Computer und Bildschirme mit kleinen Bilddarstellungen angeschlossen werden, ebenso wie mehrere Computer und Monitore mit Vollbilddarstellungen.If required - for example with a higher number of cameras - several computers and monitors can also be used small images can be connected, as well as several computers and monitors with full images.
Außer den Kameras Kl bis Kn können eine oder mehrere Überwachungseinrichtungen WKl drahtlos mit dem Netzwerk bzw. dem Router R verbunden werden. Es ist ferner möglich, die Bilder, die auf dem zweiten Monitor größer dargestellt werden, an weitere Monitore bzw. Computer oder andere Darstellungseinrichtungen, gegebenenfalls drahtlos, zu übertragen und entsprechend darzustellen, was in derIn addition to the cameras Kl to Kn, one or more monitoring devices WKl can be wirelessly connected to the network or the router R. It is also possible to transmit the images, which are shown larger on the second monitor, to other monitors or computers or other display devices, if necessary wirelessly, and to display what is shown in the
Zeichnung beispielhaft mit einem Laptop M3 und einem PDA M4 dargestellt ist.Drawing is shown as an example with a laptop M3 and a PDA M4.
Schließlich ist der Anschluss eines AufZeichnungsgerätes REC an das Netzwerk möglich, das in der Zeichnung als Bandgerät dargestellt ist, jedoch auch in anderer Form, beispielsweise als Festplattenspeicher, realisiert werden kann.Finally, it is possible to connect a recording device REC to the network, which is shown in the drawing as a tape device, but can also be implemented in another form, for example as a hard disk memory.
Tritt im Bereich der Videokamera Kx ein Geräusch auf, so wird die überwachende Person durch eine Hervorhebung des Bildes Bx auf dieses Bild aufmerksam gemacht.If a noise occurs in the area of the video camera Kx, the surveillance person is made aware of this picture by highlighting the picture Bx.
Wie bereits erwähnt, besteht bei entsprechender Leistungsfähigkeit des Netzwerkes bezüglich der zu übertragenden Datenmengen auch die Möglichkeit, von allen Videokameras Kl bis Kn MPEG-Signale mit großen Bildpunktzahlen zu senden und die Verkleinerung im Computer CI durchzuführen. Nach der durch den Mausklick erfolgten Auswahl eines der Bilder erhält der Computer C2 ein Kommando zum Empfang der MPEG-Signale aus der entsprechenden Videokamera. As already mentioned, if the network has the appropriate performance with regard to the amounts of data to be transmitted, it is also possible to send MPEG signals with large numbers of pixels from all video cameras K1 to Kn and to carry out the reduction in the computer CI. After selecting one of the images by clicking the mouse, the computer C2 receives a command to receive the MPEG signals from the corresponding video camera.

Claims

Patentansprüche claims
1. Überwachungseinrichtung mit Videokameras, wobei digitale Videosignale über ein Kommunikationsnetzwerk (R) mindestens zwei Monitoren (Ml, M2) zuführbar sind, wobei auf einem ersten Monitor (Ml) eine Vielzahl von verkleinerten Bildern (Bl bis Bn) darstellbar ist und wobei mit einem Zeigegerät (Z) eines der verkleinerten Bilder auswählbar ist, das auf einem zweiten Monitor (M2) größer dargestellt wird.1. Monitoring device with video cameras, digital video signals being able to be fed via a communication network (R) to at least two monitors (M1, M2), a plurality of reduced images (B1 to Bn) being able to be displayed on a first monitor (M1), and with one Pointing device (Z) one of the reduced images can be selected, which is shown larger on a second monitor (M2).
2. Überwachungseinrichtung nach Anspruch 1, dadurch gekennzeichnet, dass den Videokameras (Kl bis Kn) zur Bildung der digitalen Videosignale Computer (PC) mit geeigneten Programmen zugeordnet sind, welche LAN- Schnittstellen aufweisen, und dass das Kommunikationsnetzwerk ein lokales Netzwerk (LAN) ist.2. Monitoring device according to claim 1, characterized in that the video cameras (Kl to Kn) for forming the digital video signals are assigned to computers (PC) with suitable programs which have LAN interfaces, and that the communication network is a local area network (LAN) ,
3. Überwachungseinrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die digitalen Videosignale MPEG-Signale sind.3. Monitoring device according to one of the preceding claims, characterized in that the digital video signals are MPEG signals.
4. Überwachungseinrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Übertragung der digitalen Videosignale nach dem Internet-Protokoll (IP) erfolgt.4. Monitoring device according to one of the preceding claims, characterized in that the transmission of the digital video signals takes place according to the Internet protocol (IP).
5. Überwachungseinrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass den Videokameras (Kl bis Kn) zugeordnete Einrichtungen (PC) zur Bildung der digitalen Videosignale zwischen kleineren Bildern mit geringerer Bildpunktzahl und größeren Bildern mit höherer Bildpunktzahl durch ein vom ersten Computer (Cl) über das Kommunikationsnetzwerk (R) übertragenes mit Hilfe des Zeigegerätes (Z) erzeugtes Kommando umschaltbar sind, dass digitale Videosignale mit niedrigerer Bildpunktzahl zum ersten Monitor (Ml) übertragen werden und dass ein ausgewähltes digitales Videosignal mit höherer Bildpunktzahl zum zweiten Monitor (M2) übertragen wird.5. Monitoring device according to one of the preceding claims, characterized in that the video cameras (Kl to Kn) associated devices (PC) for forming the digital video signals between smaller images with fewer pixels and larger images with higher ones Pixels can be switched by a command generated by the first computer (Cl) via the communication network (R) and generated with the aid of the pointing device (Z), that digital video signals with a lower number of pixels are transmitted to the first monitor (Ml) and that a selected digital video signal with a higher one Pixel number is transferred to the second monitor (M2).
6. Überwachungseinrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass den Videokameras (Kl bis6. Monitoring device according to one of claims 1 to 4, characterized in that the video cameras (Kl to
Kn) zugeordnete Einrichtungen (PC) zur Bildung der digitalen Videosignale digitale Videosignale mit höherer Bildpunktzahl erzeugen, dass die digitalen Videosignale mit höherer Bildpunktzahl in einem dem ersten Monitor (Ml) zugeordneten Computer (Cl) in digitale Videosignale mit geringerer Bildpunktzahl umgewandelt und auf dem ersten Monitor (Ml) dargestellt werden und dass ein mit Hilfe des Zeigegerätes (Z) ausgewähltes digitales Videosignal mit höherer Bildpunktzahl zum zweiten Monitor (M2) übertragen wird.Kn) associated devices (PC) for forming the digital video signals generate digital video signals with a higher number of pixels, that the digital video signals with a higher number of pixels are converted in a computer (Cl) assigned to the first monitor (Ml) into digital video signals with a lower number of pixels and on the first Monitor (Ml) are displayed and that a digital video signal selected with the aid of the pointing device (Z) with a higher number of pixels is transmitted to the second monitor (M2).
7. Überwachungseinrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass mindestens eine weitere Videokamera (WKl) und/oder mindestens ein weiterer Monitor mit Computer über eine drahtlose Netzwerkverbindung (WLAN) angeschlossen ist.7. Monitoring device according to one of the preceding claims, characterized in that at least one further video camera (WKl) and / or at least one further monitor with computer is connected via a wireless network connection (WLAN).
8. Überwachungseinrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass den Videokameras (Kx) Sensoren (S) zugeordnet sind, die besondere Ereignisse melden, und dass Mittel vorgesehen sind, welche Bilder von denjenigen Videokameras (Kx) , deren zugeordneter Sensor (S) ein besonderes Ereignis meldet, auffällig markieren. 8. Monitoring device according to one of the preceding claims, characterized in that the video cameras (Kx) sensors (S) are assigned that report special events, and that means are provided which images of those video cameras (Kx), their associated sensor (S ) reports a special event, mark it conspicuously.
9. Überwachungseinrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass ein Bild einer Videokamera (Kx) , deren zugeordneter Sensor (S) ein besonderes Ereignis meldet, auf einem weiteren Monitor (M2) größer dargestellt wird.9. Monitoring device according to one of the preceding claims, characterized in that an image of a video camera (Kx), whose associated sensor (S) reports a special event, is shown larger on a further monitor (M2).
10. Überwachungseinrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass Mittel (REC) zur Aufzeichnung der digitalen Videosignale vorgesehen sind. 10. Monitoring device according to one of the preceding claims, characterized in that means (REC) are provided for recording the digital video signals.
PCT/DE2004/002177 2003-10-16 2004-09-30 Surveillance device with video cameras WO2005041580A1 (en)

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