EP0939387B1 - Einrichtung zur Raumüberwachung - Google Patents
Einrichtung zur Raumüberwachung Download PDFInfo
- Publication number
- EP0939387B1 EP0939387B1 EP99103260A EP99103260A EP0939387B1 EP 0939387 B1 EP0939387 B1 EP 0939387B1 EP 99103260 A EP99103260 A EP 99103260A EP 99103260 A EP99103260 A EP 99103260A EP 0939387 B1 EP0939387 B1 EP 0939387B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- image sensor
- signal
- movement detector
- detector
- image
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Lifetime
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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
- G08B13/19602—Image analysis to detect motion of the intruder, e.g. by frame subtraction
-
- 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
- G08B13/19602—Image analysis to detect motion of the intruder, e.g. by frame subtraction
- G08B13/19604—Image analysis to detect motion of the intruder, e.g. by frame subtraction involving reference image or background adaptation with time to compensate for changing conditions, e.g. reference image update on detection of light level change
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- 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
- G08B13/19697—Arrangements wherein non-video detectors generate an alarm themselves
Definitions
- the present invention relates to a device for room surveillance, with at least an image sensor and at least one presence or motion detector and with one Control and evaluation electronics to which the at least one image sensor and the at least one presence or motion detector are connected.
- the presence or Motion detector exclusively to reduce the power consumption of the preferred battery powered device by turning on the image sensor when needed. something similar applies to the video surveillance system described in GB-A-2 309 133, whose image sensor connected to a VCR.
- the presence or motion detector enables better utilization of the magnetic tape used for image storage, by turning on the VCR only when needed.
- DE-U-297 18 312 which has an image sensor, a stage for Still image creation and still image storage, a stage for creating difference images and one Contains the stage for image analysis, the analysis result is based on predefined criteria of reportability compared, and if the result is positive, a message is sent to a central station. While this facility allows for intelligent surveillance by checking the signals of the image sensor for tolerance and reporting reliability are carried out automatically, so that a message is only sent to the head office if a positive analysis result is available.
- the invention is now to provide a device of the type mentioned at the outset, which is intelligent surveillance, optimal security against deception and sufficient Robustness guaranteed.
- control and evaluation electronics has a processing stage for local signal evaluation, in which a Combined evaluation of the signals of the at least one image sensor and the at least one A presence or motion detector is used to determine the mean lighting of the monitored room and that in the combined evaluation of the Signals the weighting of the signal of the at least one presence or motion detector (6) depends on the average lighting and with decreasing average lighting increases.
- the device according to the invention is therefore a two- or multi-criteria motion detector at least one image sensor.
- This detector points towards both known dual detectors as well as significant advantages over pure image sensors. Compared to the dual detectors, where no or only a very rough spatial resolution is possible, so that A distinction between humans and animals can often not be made, is the inventive Detectors much more robust.
- the image sensor also offers the option of Classification of objects based on their geometry and movement and thus the intelligent Monitoring and verification and storage of events and later Accessibility from these.
- the detector according to the invention has the advantage that it even in poor lighting conditions the performance of a presence or Provides motion detector and is therefore fully functional.
- the presence or Motion detector the image processing algorithms when interpreting difficult situations support.
- a first preferred embodiment of the device according to the invention is characterized in that that prior to the combined evaluation of the signals, a separate pre-evaluation both the signals of the at least one image sensor and that of the at least one a presence or motion detector.
- a second preferred embodiment of the device according to the invention is thereby characterized in that the at least one image sensor by a CMOS image sensor, preferably an active pixel sensor is formed.
- the formation of the at least one image sensor as a CMOS image sensor has, among other things the advantage of an order of magnitude lower power consumption than CCD cameras and the ability to access individual pixels. The latter allows pictures with reduced resolution or only read out interesting areas of the image, whereas with CCD cameras the pixels only can be read out line by line.
- a third preferred embodiment of the device according to the invention is thereby characterized in that a means of determining the distance of one of the at least a presence or motion detector detected object and that the Distance signal of this means is fed to the processing stage.
- the device for room monitoring shown in Fig. 1 consists essentially of a multi-criteria motion detector 1, hereinafter referred to as a detector, and one hereinafter referred to as electronics control and evaluation electronics 2 with a control stage 3 and a processing stage 4 for the local evaluation of the signals of the detector 1.
- a detector a multi-criteria motion detector 1
- electronics control and evaluation electronics 2 with a control stage 3 and a processing stage 4 for the local evaluation of the signals of the detector 1.
- this representation only shows the individual function blocks and not the specific ones apparatus construction of the facility again. For example, certain are usually Parts of the electronics are present in detector 1. The latter applies in particular if the detector signals are processed or pre-evaluated in detector 1.
- the detector 1 consists of at least one image sensor 5 and at least one following Presence or motion detector 6 referred to as P / B detector.
- the image sensor 5 is included a means for measuring the lighting in the monitored room. Both that Image sensor 5 and the P / B detector 6 are each followed by a preprocessing stage 7 or 8, but also included in detector 1 or, if applicable, in processing level 4 can be.
- the signals reach the processing stage from the preprocessing stage 7 and 8 4, which also the illumination signal of the means for illumination measurement contained in the image sensor 5 is fed.
- the detector 1 can have a distance meter 9 for determining the distance from the P / B detector 6 events included.
- Processing level 4 is autonomous and enables local decisions and / or the display of those recorded by the image sensor 5 Pictures; it is preferably also for transferring the images to a distant one Central 10 equipped, where, for example, additional verification can then take place.
- the P / B detector 6 is a motion or presence detector based on one of the known detection principles Passive infrared, active infrared, microwaves, ultrasound or any Combination of them.
- CMOS image sensor a so-called APS [APS: active pixel Sensor] used, which is characterized by a very low power consumption and by the possibility of access to individual pixels.
- APS active pixel Sensor
- additional application-specific analog or digital functions for example simple Image processing algorithms such as filters or exposure control can be easily integrated.
- APS the article "A 128 x 128 CMOS Active Pixel Image Sensor for Highly Integrated Imaging Systems "by Sunetra K. Mendis, Sabrina E. Kennedy and Eric R. Fossum, IEDM 93-538 and "128X128 CMOS Photodiode-Type Active Pixel Sensor With On-Chip Timing, Control and Signal Chain Electronics "by R.H. Nixon, S.E. Kemeny, C.O. Staller and E. R. Fossum in SPIE Vol. 2415/117.
- the image sensor 5 is directed towards the space to be monitored, detects it in terms of image technology, digitizes the image and stores it as a reference image in a memory. If the image sensor 5 forming APS consists of 128 by 128 pixels, for example, would then be used a wide-angle lens at a distance of 15 m in front of the image sensor 5 one pixel of approximately 12 by 12 cm. Such a grid is suitable, human and distinguish animal shapes relatively reliably from each other.
- the image sensor 5 makes intervals a picture of the monitored room from fractions of a second is saved Images for a certain time and compare them with the reference image and / or with each other.
- the storage of the images is preferably controlled in such a way that the images sent by the detector 1 immediately preceding and / or immediately following the detected event until saved further and that the remaining images automatically after the specified time to be deleted.
- the image sensor 5 is sensitive to light and has a large dynamic range (sufficient recognizability of details with strong light / dark contrast) optimized.
- the functions integrated on the APS chip allow an automatic electronic Integrate closure with a dynamic of 1: 1000.
- the P / B detector 6 essentially serves to detect the potential weaknesses of the image sensor 5 compensate. This includes in particular that the image sensor 5 is below a critical one Illumination provides no image information, and that also a strong change in the image information is often not caused by an intruder compared to the reference image. you think, for example, of abrupt changes in lighting that by switching the street lighting on / off, passing vehicles with the lights on Headlights, thunderstorms or the like can be caused. In these and the like In cases where the signal from the P / B detector 6 is taken into account, the robustness of the Detector 1 increased significantly. This is taken into account by a combined evaluation the signals of the image sensor 5 and the P / B detector 6 in the processing stage 4 realized.
- the signals from the image sensor 5 and the PIB detector 6 to subject the combined evaluation to a separate preliminary evaluation, which in preprocessing stages 7 and 8.
- the preprocessing stages 7 and 8 in the respective sensor / detector 5 or 6 or in the processing stage 4 be integrated.
- the signals from the P / B detector 6 in converted a format suitable for combined evaluation with the signal of the image sensor 5 and classified according to their strength. If the detector 1 contains a distance meter 9, then this becomes corresponding in the presence of a signal from the P / B detector 6 Starch from processing level 4 activated via control level 3 and delivers to the processing level information about the distance of the event just detected or Object from detector 1. With the help of this distance information, the signal from the image sensor can be used 5 clear conclusions on the size of a detected object and thus on its size Nature, such as humans or animals.
- the pre-evaluation is in the form of hardware and / or in the form of a processor core integrated on the APS chip.
- the number of compared the modified image of the reference image, its clustering and characteristics of the pixel cluster certainly.
- the reference image is constantly updated, whereby Changes are only adopted in the reference image after checking their stability.
- the reference image tracking can be done by including the signals of the P / B detector 6 run more stable.
- processing stage 4 At the input of processing stage 4 there is a signal of the P / B classified according to strength Detector 6, an image signal of the image sensor 5 with information about the number of changes Pixels and the characteristics of the pixel clusters and possibly a signal from the distance meter 9, the distance of the event triggering the signal of the P / B detector 6 indicates.
- the processing stage 4 continuously receives information about the image sensor 5 medium lighting in the monitored room and weighted in the combined evaluation the signals the signals of the lighting-independent P / B detector 6 the weaker the more the lighting is.
- the combined evaluation of the signals gives a decision at the output of processing stage 4 Alarm or non-alarm, this decision essentially the image content, the overall lighting, the information from the P / B detector 6 and the change and / or history of these parameters, hereinafter referred to as global criteria, are taken into account.
- Plausibility links are very helpful here: if, for example, lighting and change the image content quickly and strongly, but the signal of the P / B detector 6 is weak, then no alarm is given, but the stability of the new image is checked and in it searched for movements. If the P / B detector 6 reports no movement and only If there was a change in lighting and / or image, it was almost certain to become one Illumination switched on or off so that there is no alarm. Whether it's actually a change of lighting has taken place, can easily be checked based on the stability of the new image become.
- the detailed analysis is carried out both statically and dynamically.
- the cluster areas examined for size, topology and orientation, in the second case regarding the change in size, shape and position of the cluster areas.
- an attempt is made to move or move from the fixed reference image Filter out objects and then assign them a clear, alarm-relevant category.
- the difference between humans and animals is the height / aspect ratio of the frequency range in question, the vertical and the horizontal predominates in animals. From the front there is a distinction between people and Animal very difficult; but you can assume that the detected object is not frontal moved towards the detector 1 but sidesteps and is therefore easier to see.
- FIG. 2 shows a simple example of signal processing in a device for room monitoring without distance meter 9 (Fig. 1).
- the representation assumed that the preprocessing stages 7 and 8 in the processing stage 4 (FIG. 1) are integrated, so that the preprocessing of the signals of the image sensor 5 and the P / B detector 6 not locally in the relevant sensor or detector, but instead takes place in processing stage 4.
- the number of pixels changed compared to the reference image is determined. If this number is zero or very small, then the signal of the P / B detector 6 is compared with a threshold value P 2 with P 2 > P 1 . If the signal of the P / B detector 6 is greater than P 2 , an alarm is triggered, if not, then the processing of the relevant sensor signal is terminated.
- the signals can possibly also be analyzed over a longer time interval.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Multimedia (AREA)
- Closed-Circuit Television Systems (AREA)
- Image Processing (AREA)
- Alarm Systems (AREA)
- Image Analysis (AREA)
Description
- Fig. 1
- ein Blockschema eines erfindungsgemässen Einrichtung zur Raumüberwachung; und
- Fig. 2
- ein Flussdiagramm zur Erläuterung der Signalverarbeitung.
- Geringe Anzahl geänderter Pixel absolut oder pro Häufungsbereich: Unterkritische Änderung, die nicht für ein Alarmereignis genügt. Es findet keine weitere Auswertung statt.
- Mittlere Anzahl geänderter Pixel absolut oder pro Häufungsbereich: Es findet eine Detailanalyse statt.
- Grosse Anzahl geänderter Pixel absolut oder pro Häufungsbereich: Es erfolgt zuerst eine Überprüfung der globalen Kriterien und sofern diese keine vernünftige Erklärung liefert, anschliessend eine Detailanalyse.
Claims (15)
- Einrichtung zur Raumüberwachung, mit mindestens einem Bildsensor (5) und mindestens einem Präsenz- oder Bewegungsdetektor (6) und mit einer Steuerungs- und Auswerteelektronik (2), an welche der mindestens eine Bildsensor (5) und der mindestens eine Präsenzoder Bewegungsdetektor (6) angeschlossen sind, dadurch gekennzeichnet, dass die Steuerungs- und Auswerteelektronik (2) eine Verarbeitungsstufe (4) zur lokalen Signalauswertung aufweist, bei welcher eine kombinierte Auswertung der Signale des mindestens einen Bildsensors (5) und des mindestens einen Präsenz- oder Bewegungsdetektors (6) erfolgt, dass eine Bestimmung der mittleren Beleuchtung des überwachten Raumes erfolgt, und dass bei der kombinierten Auswertung der Signale die Gewichtung des Signals des mindestens einen Präsenz- oder Bewegungsdetektors (6) von der mittleren Beleuchtung abhängig ist und mit abnehmender mittlerer Beleuchtung zunimmt.
- Einrichtung nach Anspruch 1, dadurch gekennzeichnet, dass vor der kombinierten Auswertung der Signale eine getrennte Vorauswertung (7, 8) sowohl der Signale des mindestens einen Bildsensors (5) als auch derjenigen des mindestens einen Präsenz- oder Bewegungsdetektors (6) erfolgt.
- Einrichtung nach Anspruch 2, dadurch gekennzeichnet, dass die genannte Vorauswertung (7, 8) im jeweiligen Sensor oder Detektor (5 bzw. 6) oder in der Verarbeitungsstufe (4) erfolgt.
- Einrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der mindestens eine Bildsensor (5) durch einen CMOS-Bildsensor, vorzugsweise einen Aktiv Pixel Sensor, gebildet ist.
- Einrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass ein Speicher für die vom Bildsensor (5) aufgenommenen Bilder vorgesehen ist, und dass dieser Speicher so gesteuert ist, dass eine Speicherung derjenigen Bilder erfolgt, welche in Kombination mit dem Signal des Präsenz- oder Bewegungsdetektors (6)zu einem Alarmentscheid geführt haben.
- Einrichtung nach Anspruch 5, dadurch gekennzeichnet, dass zusätzlich eine Speicherung der den genannten Bildern unmittelbar vorausgehenden und/oder nachfolgenden Bilder erfolgt.
- Einrichtung nach Anspruch 5 oder 6, dadurch gekennzeichnet, dass eine Schnittstelle zum Auslesen der gespeicherten Bilder vorgesehen ist, und dass das Auslesen vorzugsweise mit einem PC erfolgt.
- Einrichtung nach einem der Ansprüche 5 bis 7, dadurch gekennzeichnet, dass ein Mittel zur Übertragung der genannten gespeicherten Bilder an eine von der Überwachungseinrichtung räumlich getrennte Station vorgesehen ist.
- Einrichtung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass ein Mittel (9) zur Bestimmung der Entfernung eines von dem mindestens einen Präsenz- oder Bewegungsdetektor (6) detektierten Objekts vorgesehen und dass das Distanzsignal dieses Mittels der Verarbeitungsstufe (4) zugeführt ist.
- Einrichtung nach Anspruch 4, dadurch gekennzeichnet, dass bei der Vorauswertung (7) der Signale des mindestens einen Bildsensors (5) eine Bestimmung der Anzahl der gegenüber einem Referenzzbild geänderten Pixel und/oder von deren Häufung und/oder von deren Verteilung über das Bild erfolgt.
- Einrichtung nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass bei für den Betrieb des Bildsensors (5) nicht ausreichender Beleuchtung nur eine Auswertung des Signals des Präsenz- oder Bewegungsdetektors (6) erfolgt.
- Einrichtung nach Anspruch 11, dadurch gekennzeichnet, dass ein Vergleich des Signals des Präsenz/Bewegungsdetektors (6) mit einem ersten Schwellwert (P1) erfolgt, dessen Grösse ungefähr der Alarmschwelle eines Präsenz- oder Bewegungsdetektors des betreffenden Typs entspricht.
- Einrichtung nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, dass bei für den Betrieb des Bildsensors (5) ausreichender Beleuchtung ein Vergleich des Signals des Präsenz- oder Bewegungsdetektors (6) mit von der Anzahl der gegenüber einem Referenzbild veränderten Pixel in dem vom Bildsensor (5) aufgenommenen Bild abhängigen Schwellwerten (P2, P3) erfolgt.
- Einrichtung nach Anspruch 13, dadurch gekennzeichnet, dass bei nur sehr wenig gegenüber dem Referenzbild veränderten Pixeln ein Vergleich des Signals des Präsenz- oder Bewegungsdetektors (6) mit einem über dem ersten Schwellwert (P1) liegenden zweiten Schwellwert (P2) erfolgt, wobei diese Analyse über ein längeres Zeitintervall erfolgen kann.
- Einrichtung nach Anspruch 13, dadurch gekennzeichnet, dass bei vielen gegenüber dem Referenzbild veränderten Pixeln ein Vergleich des Signals des Präsenz- oder Bewegungsmelders (6) mit einem wesentlich unter dem ersten Schwellwert (P1) liegenden dritten Schwellwert (P3) erfolgt, und dass nur dann eine weitere Verarbeitung der Sensorsignale stattfindet, wenn nicht gleichzeitig das Signal des Präsenz- oder Bewegungsmelders (6) unterhalb des dritten Schwellwerts (P3) liegt und vom Bildsensor (5) eine grosse Beleuchtungsänderung registriert wurde.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP99103260A EP0939387B1 (de) | 1998-02-28 | 1999-02-19 | Einrichtung zur Raumüberwachung |
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP98103542 | 1998-02-28 | ||
EP98103542A EP0939386A1 (de) | 1998-02-28 | 1998-02-28 | Einrichtung zur Raumüberwachung |
CH76798 | 1998-03-31 | ||
CH76798 | 1998-03-31 | ||
EP99103260A EP0939387B1 (de) | 1998-02-28 | 1999-02-19 | Einrichtung zur Raumüberwachung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0939387A1 EP0939387A1 (de) | 1999-09-01 |
EP0939387B1 true EP0939387B1 (de) | 2003-09-17 |
Family
ID=25685622
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP99103260A Expired - Lifetime EP0939387B1 (de) | 1998-02-28 | 1999-02-19 | Einrichtung zur Raumüberwachung |
Country Status (5)
Country | Link |
---|---|
US (1) | US6396534B1 (de) |
EP (1) | EP0939387B1 (de) |
DE (1) | DE59906980D1 (de) |
DK (1) | DK0939387T3 (de) |
ES (1) | ES2209257T3 (de) |
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GB2064189A (en) * | 1979-11-09 | 1981-06-10 | Ascotts Ltd | Surveillance System |
JPH027195A (ja) * | 1988-06-27 | 1990-01-11 | Mitsui Eng & Shipbuild Co Ltd | 異常監視システム |
US5473368A (en) * | 1988-11-29 | 1995-12-05 | Hart; Frank J. | Interactive surveillance device |
JP3222456B2 (ja) * | 1990-07-30 | 2001-10-29 | 株式会社東芝 | 映像監視システム、送信装置、受信装置、および映像監視方法 |
DE4138254C1 (de) * | 1991-11-21 | 1993-06-24 | Grundig E.M.V. Elektro-Mechanische Versuchsanstalt Max Grundig Hollaend. Stiftung & Co Kg, 8510 Fuerth, De | |
US5581297A (en) * | 1992-07-24 | 1996-12-03 | Intelligent Instruments Corporation | Low power video security monitoring system |
DE29607184U1 (de) * | 1995-04-27 | 1996-07-18 | Frauhammer Alfred | Gefahrenmeldeanlage mit Videoüberwachung |
US5610580A (en) * | 1995-08-04 | 1997-03-11 | Lai; Joseph M. | Motion detection imaging device and method |
US5825413A (en) | 1995-11-01 | 1998-10-20 | Thomson Consumer Electronics, Inc. | Infrared surveillance system with controlled video recording |
GB2309133A (en) | 1996-01-11 | 1997-07-16 | Richad Thomas Fortescue | Video surveillance system including video recorder timing control device |
US5982418A (en) * | 1996-04-22 | 1999-11-09 | Sensormatic Electronics Corporation | Distributed video data storage in video surveillance system |
DE29718213U1 (de) * | 1997-10-14 | 1997-12-04 | Waldmann, Günter, Dipl.-Ing., 91052 Erlangen | Vorrichtung zur automatischen, intelligenten Überwachung |
-
1999
- 1999-02-19 DK DK99103260T patent/DK0939387T3/da active
- 1999-02-19 EP EP99103260A patent/EP0939387B1/de not_active Expired - Lifetime
- 1999-02-19 DE DE59906980T patent/DE59906980D1/de not_active Expired - Lifetime
- 1999-02-19 ES ES99103260T patent/ES2209257T3/es not_active Expired - Lifetime
- 1999-02-26 US US09/258,731 patent/US6396534B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US6396534B1 (en) | 2002-05-28 |
EP0939387A1 (de) | 1999-09-01 |
ES2209257T3 (es) | 2004-06-16 |
DK0939387T3 (da) | 2004-02-02 |
DE59906980D1 (de) | 2003-10-23 |
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