JPH08235345A - Video monitor system - Google Patents

Abstract

PURPOSE: To provide the video monitor system which constitutes the system which enables an arbitrary terminal equipment to monitor the monitor image picked up by an arbitrary monitor camera and is superior in flexibility. CONSTITUTION: The video monitor system consists of plural monitor cameras 10a to 10d, a picture processor to which analog video signals from plural monitor cameras 10a to 10d are inputted, plural terminal equipments 14a to 14c, and a communication line 16 connecting the picture processor and plural terminal equipments 14a to 14c. The picture processor generates picture data of monitor images picked up by monitor cameras 10a to 10d from analog video signals of the monitor image inputted from monitor cameras 10a to 10d and stores these generated picture data in a storage means 15 and transfers picture data of an arbitrary monitor camera to the terminal equipment of the request source in accordance with requests from terminal equipments 14a to 14c.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video surveillance system, and more particularly to a video surveillance system capable of constructing a system having a high flexibility.

[0002]

2. Description of the Related Art Conventionally, in a production site such as a factory, the operating status of a manufacturing line is monitored using a monitoring camera or the like.

Recently, for the purpose of product inventory management in stores, grasping customer situations, and disaster prevention,
Video surveillance systems including surveillance cameras have been installed in buildings, tunnels, underpasses, and the like.

FIG. 2 is a block diagram showing a schematic configuration of an example of the conventional video surveillance system.

In FIG. 2, 10a, 10b, 10c,
10d is a surveillance camera for shooting surveillance video, 11 is a switcher, 20 is a main monitor, 21 is a video signal distributor,
Reference numerals 22a, 22b and 22c are sub-monitors installed at the respective monitoring locations.

The switcher 11 is provided for each surveillance camera (10
a, 10b, 10c, 10d), the analog video signal of the monitoring video imaged is switched and input to the main monitor 20.

Next, the conventional video monitoring system shown in FIG. 2 will be described.

First, an analog video signal from a surveillance camera installed at a predetermined surveillance place is selected by the switcher 11 and input to the main monitor 20.

Here, the switcher 11 sequentially switches the analog video signals from the respective surveillance cameras, and the main monitor 2
It has the function of inputting 0.

Therefore, on the monitor screen of the main monitor 20, the images of the surveillance cameras that are sequentially switched are displayed, for example,
10a, 10b, 10c, 10d ...

In this case, after the last video from the surveillance camera is displayed, the surveillance camera is first returned to.

At the same time, when it is necessary to monitor at several places, the video signal from the main monitor 20 is distributed / amplified through the distributor 12, and then each sub monitor (22a, 22a,
22b, 22c).

[0013]

However, in the above-mentioned conventional video monitoring system, since the analog video signal is directly distributed, the sub-monitors (22a, 22b, 22c) are provided.
The image on the monitor screen is basically the same as the image on the monitor screen of the main monitor 20.

Therefore, it is difficult to display the monitor image from the specific monitor camera on the monitor screen of the specific sub monitor, and the monitor image from the specific monitor camera is displayed on the monitor screen of the specific sub monitor. It is necessary to separately connect a specific surveillance camera and a specific sub monitor.

However, if the particular surveillance camera and the particular sub-monitor are individually connected, the video surveillance system becomes fixed and the flexibility of the video surveillance system is lacking.

Further, since the video signal from each surveillance camera is handled in an analog manner, there is a problem that it is difficult to perform processing such as extracting a change in the video.

The present invention has been made in order to solve the above-mentioned problems of the prior art, and an object of the present invention is to provide a video surveillance system with a surveillance video imaged by an arbitrary surveillance camera and an arbitrary terminal device. It is to provide a technology that enables the construction of a flexible system that can be monitored by.

Another object of the present invention is to provide a technique capable of easily performing a process such as change point extraction on a monitor image from each surveillance camera in a video surveillance system. is there.

The above and other objects and novel features of the present invention will become apparent from the description of this specification and the accompanying drawings.

[0020]

Of the inventions disclosed in the present application, a representative one will be briefly described below.
It is as follows.

(1) A plurality of surveillance cameras, an image processing device to which an analog video signal of a surveillance video imaged by the plurality of surveillance cameras is input, a plurality of terminal devices, the image processing device and a plurality of terminals An image monitoring system comprising a communication line connecting to a device, wherein a monitoring image captured by an arbitrary monitoring camera among the plurality of monitoring cameras is sequentially monitored by an arbitrary terminal device. But,
Generating means for generating image data of the surveillance video imaged by each surveillance camera from an analog video signal of the surveillance video imaged by each surveillance camera input from each surveillance camera; and image data generated by the production means. It is characterized by comprising storage means for storing each surveillance camera, and transfer means for transferring image data of an arbitrary surveillance camera in the storage means to a terminal device of a request destination.

[0022]

According to the above means, a plurality of surveillance cameras, an image processing device to which analog video signals from the plurality of surveillance cameras are input, a plurality of terminal devices, the image processing device and a plurality of terminal devices. In a video surveillance system composed of a communication line connecting the above, the image processing device generates image data of the surveillance video imaged by each surveillance camera from an analog video signal of the surveillance video input from each surveillance camera, and a storage means. In addition, in response to a request from the terminal device, the image data of an arbitrary surveillance camera is transferred to the requesting terminal device.

As a result, it becomes possible to monitor the monitoring video imaged by an arbitrary monitoring camera with an arbitrary terminal device, and it is possible to construct a system with high flexibility.

Further, the system can be easily changed and the data processing in the terminal device can be easily carried out, so that it becomes possible to easily carry out the processing such as the change point detection on the images from the respective surveillance cameras. .

[0025]

Embodiments of the present invention will be described below in detail with reference to the drawings.

In all the drawings for explaining the embodiments, parts having the same functions are designated by the same reference numerals, and the repeated description thereof will be omitted.

FIG. 1 is a block diagram showing a schematic configuration of a video surveillance system which is an embodiment of the present invention.

In FIG. 1, 10a, 10b, 10c,
10d is a surveillance camera, 11 is a switcher, 12 is a video data collection device, 13 is a data supply device, and 14a, 14
Reference numerals b and 14c are terminal devices installed at the respective monitoring locations, 15 is an external storage device in the data supply device 13, and 16 is a local data communication network.

The video data collecting device 12 and
The data supply device 13 is composed of a workstation or the like, and the external storage device 15 is composed of a magnetic disk or the like.

Here, the video data collection device 12, the data supply device 13, and the external storage device 15 constitute the image processing means of the present invention.

Each surveillance camera (10a, 10b, 10c,
10d) is connected to the switcher 11, and the switcher 11 switches the switch in response to an instruction signal from the video data collection device 12, and each monitoring camera (10d).
a, 10b, 10c, 10d), the analog video signals of the monitoring video captured in sequence are sequentially input to the video data collection device 12.

The video data collecting device 12 uses the analog video signals of the surveillance video taken by the surveillance cameras (10a, 10b, 10c, 10d) to determine the surveillance cameras (10a, 10a, 10b).
10b, 10c, 10d), the image data of the surveillance video imaged is generated.

The video data collection device 12 is connected to the data supply device 13 and is connected to each of the monitoring cameras (10a, 10a,
10b, 10c, 10d), the image data of the monitoring video imaged is transferred to the data supply device 13.

The data supply device 13 includes the surveillance cameras (10a, 10a) transferred from the video data collection device 12.
(b, 10c, 10d), the image data of the monitoring video imaged by the monitoring cameras (10a, 10a, 10a)
(b, 10c, 10d) is written and stored in each file.

In this case, each surveillance camera (10a, 10a
The time is also written in the file for each of (b, 10c, 10d).

FIG. 2 is a diagram for explaining the file structure of each surveillance camera (10a, 10b, 10c, 10d) of the external storage device 15 shown in FIG.

In FIG. 2, 17a, 17b, 17c,
Reference numeral 17d denotes each surveillance camera (10a, 10b, 10c, 1
0d), and each file (17a, 17b, 17c, 17d) is further divided into two files 18a and 18b.

Each file (18a, 18b) has an area 1 in which a file identifier for identifying the file is stored.
9a, an area 19b for storing time, and an area 19c for storing image data.

Here, each surveillance camera (10a, 10b,
10c, 10d), the image data of the surveillance video imaged are alternately stored in the files 18a and 18b, and when the image data is read out, the file 1
Among the image data stored in 8a and the file 18b, the newest image data is read.

Further, the data supply device 13 is provided with terminal devices (14) at various locations via a high-speed local data communication network 16.
a, 14b, 14c), and the image data of the surveillance video taken by any surveillance camera in response to a request from each terminal device (14a, 14b, 14c) is installed at each surveillance location. Terminal devices (14a, 14b, 14
Transfer to c).

In this case, each terminal device (14a, 14a
b, 14c) is the external storage device 1 of the data supply device 13.
The image data stored in 5 can be referred to by using a network file server function or the like.

Further, each terminal device (14a, 14b, 14
In (c), the terminal device (14a, 14a, 14a, 14a, 14a, 14a) is designated by designating a desired surveillance camera to the data supply device 13 and designating an acquisition time interval of the image data of the surveillance video imaged by the desired surveillance camera. It is also possible to display the surveillance video imaged by a desired surveillance camera at predetermined time intervals on the screens 14b and 14c).

At this time, each terminal device (14a, 14b, 1
It is also possible to easily know whether or not there is a change in the surveillance video by taking the difference between the image data of the two at the time of switching the surveillance video taken by the desired surveillance camera displayed on the screen of 4c). .

In the video surveillance system of this embodiment,
It is easy to add terminal devices, and each terminal device (1
4a, 14b, 14c), since it is possible to arbitrarily specify the surveillance camera for photographing the surveillance object, it is possible to flexibly change the video surveillance system.

In the video surveillance system of this embodiment,
Although a method using an optical fiber is adopted as a high-speed data communication network, an Ethernet using a coaxial cable or the like can be used if necessary.

Further, although the video surveillance system using the computer network using the local data communication network 16 has been described in the present embodiment, the present invention is not limited to this, and the present invention can be applied as long as it has a similar function. Needless to say, is applicable.

Furthermore, it is also possible to monitor from a remote place using a digital public communication network or the like.

Although the present invention has been specifically described based on the embodiments, the present invention is not limited to the above embodiments, and it goes without saying that various modifications can be made without departing from the scope of the invention.

[0049]

The effects obtained by the typical ones of the inventions disclosed in the present application will be briefly described as follows.

(1) According to the present invention, a plurality of surveillance cameras, an image processing device to which analog video signals from the plurality of surveillance cameras are input, a plurality of terminal devices, the image processing device and a plurality of image processing devices. In a video surveillance system composed of a communication line connecting to a terminal device, image data of a surveillance image is generated from an analog video signal of a surveillance video taken by each surveillance camera and stored in a storage means of a data supply device,
Further, in response to a request from the terminal device, the image data of the arbitrary monitoring camera is transferred to the terminal device of the request destination, so the monitoring video imaged by the arbitrary monitoring camera is monitored by the arbitrary terminal device. This makes it possible to build a system with high flexibility.

Further, the system can be easily changed, and the data processing in the terminal device can be easily performed, so that it becomes possible to easily perform the change point detection and the like on the images from the respective surveillance cameras. .

[Brief description of drawings]

FIG. 1 is a diagram showing a schematic configuration of a video surveillance system according to an embodiment of the present invention.

FIG. 2 is a diagram for explaining a file configuration for each surveillance camera (10a, 10b, 10c, 10d) of the external storage device 15 shown in FIG.

FIG. 3 is a diagram showing a schematic configuration of a conventional video surveillance system.

[Explanation of symbols]

10a, 10b, 10c, 10d ... Surveillance camera, 11 ...
Switcher, 12 ... Image data collection device, 13 ... Data supply device, 14a, 14b, 14c ... Terminal device, 15 ...
External storage device, 16 ... Local data communication network, 17a, 17
b, 17c, 17d, 18a, 18b ... File, 20
... main monitor, 21 ... video signal distributor, 22a, 22b,
22c ... Secondary monitor.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Mitsugu Katayama 3300 Hayano, Mobara-shi, Chiba Hitachi, Ltd. Electronic Device Division

Claims (1)

[Claims] 1. A plurality of surveillance cameras, an image processing device to which an analog video signal of a surveillance video imaged by the plurality of surveillance cameras is input, a plurality of terminal devices, the image processing device and a plurality of terminal devices. A video monitoring system configured to include a communication line for connecting to and monitoring video monitored by any of the plurality of monitoring cameras sequentially by any terminal device, wherein the image processing device is Generating means for generating image data of the surveillance video captured by each surveillance camera from an analog video signal of the surveillance video captured by each surveillance camera input from each surveillance camera, and image data generated by the generation means Is stored for each surveillance camera, and transfer means for transferring the image data of any surveillance camera in the storage means to the terminal device of the request destination. Video surveillance system.