JP2001006088A - Surveillance camera device - Google Patents

Abstract

(57) [Summary] [Problem] To change the position of a monitoring camera by remote control, a time delay occurs due to the communication procedure of a control command through a communication line. It was necessary to separately mount cameras at appropriate locations and connect a communication line to each. SOLUTION: A camera mounting unit 11 in which a plurality of surveillance cameras 11a are arranged in a multi-faceted structure so that the surroundings can be seen, a communication control circuit 12 which receives a command to select a surveillance camera from a remote control signal line 2b, A selection control circuit 14 for interpreting the contents of the command and outputting a selection signal;
And a video switch circuit 13 for transmitting the video to be viewed using a pair of communication lines 2a and 2b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surveillance camera device used for safety monitoring of facilities and the like, grasp of traffic conditions on intersections and roads in the field of road traffic, and a surveillance system for illegal parking and the like.

[0002]

2. Description of the Related Art In recent years, facility monitoring, road condition monitoring, and the like have been integratedly operated at remote centers and the like.
For this reason, a surveillance camera installed at the site is connected to the center monitoring system via a communication line, etc. to grasp the situation at the site, and the direction of the camera is mechanically controlled and changed based on a command from the center, and the image of the surveillance location is displayed. The system sends signals to the center monitoring system.

FIG. 5 shows the configuration of a conventional monitoring system of this type. 1 is a monitoring camera device, 2 is a communication line for video signals and control signals, 3 is a communication control device, 4 is a video switching device, 5 is a switching control device, 6 is a console for video selection,
Reference numeral 7 denotes a monitor for displaying images. FIG. 6 shows the configuration of the surveillance camera device 1 used at the site of the surveillance system in detail. 1a is a surveillance camera, 1
Reference numeral b denotes a camera platform that changes the viewing position of the camera using a motor or the like; 1c, a control circuit that controls the motor of the camera platform and performs communication control;
a is a video signal line, and 2b is a control signal line for transmitting a control command for changing the direction of the camera.

[0004]

However, in the above-mentioned conventional surveillance camera device, when the operator wants to change the monitoring direction of one camera from the center side and view a monitoring image at a different angle, the operator needs to monitor the image on the monitor 7. While watching the console 6
The command signal is transmitted to the surveillance camera device 1 through the communication line 2. Therefore, the command signal is transmitted to the surveillance camera device 1 due to a delay in the transmission and a time lag of the operation of the motor of the camera platform 1b. The monitor 7 displays an image delayed in time, and the operator performs an operation of sending a command signal based on the image being viewed, so that the camera passes over a position that the user really wants to see. There was a problem.
Further, in order to monitor a wide area at the same time, it is necessary to separately install a plurality of cameras, and there is a problem that each monitoring camera device has a line for a video signal and a line for a control signal.

[0005] The present invention provides a surveillance camera device for monitoring a distant place using such a communication line, wherein the operation of changing the position of the surveillance camera can be performed quickly and easily. This is the purpose of 1. A second object is to provide a surveillance camera device that can simultaneously transmit surrounding video signals through a set of communication lines by installing one surveillance camera device. A third object is to provide a surveillance camera device that can automatically output surrounding surveillance images sequentially when one surveillance camera device is installed.
A fourth object of the present invention is to provide a surveillance camera device in which a camera identification code is inserted into a video signal to be transmitted so that the surveillance camera can be identified and can be displayed.

[0006]

In order to achieve the first object, the present invention provides a mounting unit for mounting a plurality of surveillance cameras on a polyhedral structure, and a switching unit for switching a video signal from the surveillance cameras. And a video switch circuit for issuing a camera selection command from a remote site through a communication line or the like, so that a camera in a monitoring direction can be easily selected and a monitoring video signal can be output. In order to achieve the second object, a video division display circuit for compressing the video signal and synthesizing a plurality of video signals on one screen is provided, and a division monitoring video signal can be output based on a division display command signal. It is like that. In order to achieve the third object, an automatic switching circuit is provided so that the video signals can be sequentially output, so that a monitoring video signal can be output. Further, in order to achieve the fourth object, a camera identification code insertion circuit is provided so that an identification code can be inserted into a video signal and displayed on a monitor so that a monitoring video signal can be output. As described above, in a surveillance camera device that performs remote monitoring using a communication line, an operation of changing the position of the surveillance camera can be performed quickly and easily, and an effective and easy-to-use surveillance camera system with a small number of necessary communication lines can be realized.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS According to the first aspect of the present invention, a camera mounting unit in which a plurality of surveillance cameras are arranged in a multi-sided structure so that the surroundings can be monitored, and the surveillance cameras are selected by a communication line from a remote place. A surveillance camera comprising: a communication control circuit for receiving a command to perform a command, a selection control circuit for interpreting the content of the command and outputting a selection signal, and a video switch circuit for extracting a video signal of the selected camera and transmitting the video signal through a communication line. It is a device that integrates a plurality of surveillance cameras into a polyhedral structure in a camera mounting unit, issues a command signal by remote operation of each surveillance camera, and selects it with a selection control circuit and a video switch circuit. In addition, there is an effect that a target monitoring video signal can be easily output without concern for a communication time delay.

According to a second aspect of the present invention, when a division display switching selection signal is input by the selection control circuit, a monitoring camera which has received a command is selected, and each image is displayed on one screen. 2. The surveillance camera device according to claim 1, further comprising a video division display circuit for compressing and synthesizing the signals so that the signals can be displayed and outputting the video signals to a video switch circuit, wherein the video camera uses a pair of communication lines. Thus, a plurality of surveillance cameras can be selected at the same time, and the surveillance video signal can be compressed, synthesized and output.

According to a third aspect of the present invention, when an automatic switching display command is input from the selection control circuit,
3. The surveillance camera device according to claim 1, further comprising an automatic switching circuit for sequentially outputting a commanded switching selection signal to the video switch circuit and sequentially selecting a plurality of cameras to extract a video signal. According to the order set by the communication line, the monitoring video signals of the plurality of monitoring cameras can be output sequentially and well.

According to a fourth aspect of the present invention, there is provided a camera identification code insertion circuit for adding an identification code of a camera currently selected by the selection control circuit to a video signal. The surveillance camera device according to
By inserting an identification code such as the number of the corresponding camera into the surveillance video signal, the surveillance camera can be identified clearly.

An embodiment of the present invention will be described below with reference to the drawings. (Embodiment 1) FIG. 1 shows the configuration of the first embodiment of the present invention. In FIG. 1, reference numeral 11 denotes a camera mounting unit in which a plurality of cameras are appropriately mounted on one structure so as to satisfy a viewing range according to a monitoring range, and 11a is a monitoring camera. The figure shows an example of a five-camera configuration. Reference numeral 10a denotes a video signal line for transmitting an image to the center monitoring system, and 10b denotes a control signal line for receiving a command signal from the center monitoring system, which is described separately in this example, but can be realized by the same communication line. 12
Is a communication control circuit for communication, 13 is a video switch circuit for switching the video output of the monitoring camera, and 14 is a selection control circuit for controlling the switching.

Next, the operation of the monitoring camera device configured as described above will be described. When the monitoring direction is determined from the center device, the number of the monitoring camera is input to the control signal line 10b as a command signal, and the communication control circuit 12
Received at. As a result, the selection control circuit 14 switches the switching selection signal from the commanded camera number to the video switch circuit l.
Output to 3. The video switch circuit 13 switches the video signal of the surveillance camera according to the switching selection signal to the video signal line 10a.
Is switched to output the selected video signal, and the selected video signal is transmitted to the center device through the video signal line 10a.

As described above, according to the first embodiment,
When the command signal is received on the control signal line 10b, the video signal of the surveillance camera can be output to the video signal line 10a without delay, so that the center device can obtain a video signal in real time.

(Embodiment 2) FIG. 2 shows a configuration of a second embodiment of the present invention. In the configuration of the first embodiment shown in FIG. 1 l
a, a video switch circuit 13, and a selection control circuit 14. In the second embodiment, when a switch selection command signal for split display is received from the control signal line 10b, a switch selection signal for split display is output to the video split display circuit 15 by the selection control circuit 14. The video division display circuit 15 selects the surveillance camera which has received the command, compresses and synthesizes each video signal so as to be able to divide and display each video signal on one screen, and converts the video signal in the same manner as the surveillance camera video signal. Input to the video switch circuit 13. As a result, a necessary video signal can be output to the video signal line 10a by selection from the selection control circuit 14 as one video signal equivalent to the video signal from the monitoring camera 11a.

As described above, according to the second embodiment,
By selecting a surveillance camera to be divided and displayed by the selection control circuit 14 in accordance with a command from the center monitoring system and giving a command to the video switch circuit 13 to switch to the video division display circuit 15, a desired division is performed on the video signal line 10a. The displayed video signal can be output, and there is an effect that a wide range of positions can be monitored simultaneously.

(Embodiment 3) FIG. 3 shows a configuration of a third embodiment of the present invention. In the third embodiment, an automatic switching circuit 16 is provided in the configuration of the first or second embodiment, and the automatic switching circuit 16 is connected to the selection control circuit 14 and the video switch circuit 13. In the third embodiment, when an automatic switching display command is received from the center monitoring system from the control signal line 10b, the selection control circuit 14 outputs an operation signal to the automatic switching circuit 16. The automatic switching circuit 16 receives the signal and sequentially outputs a switching selection signal to the video switching circuit 13 at a specified time interval. as a result,
The video switch circuit 13 selects the specified surveillance camera video signal and the divided display video signal, and
output to a.

As described above, according to the third embodiment,
The monitoring position can be switched and displayed at a fixed time interval automatically instructed, so that the outline around the monitoring position can be easily grasped.

(Embodiment 4) FIG. 4 shows a configuration of a fourth embodiment of the present invention. In the fourth embodiment, a camera identification code insertion circuit 17 is added to the configuration of the first, second, or third embodiment, and connected to the video switch circuit 13, the selection control circuit 14, and the video signal line 10a.
In the fourth embodiment, when the selection control circuit 14 or the automatic switching circuit 16 outputs a switching selection signal to the video switching circuit 13 and the camera identification code adding circuit 17, the video switching circuit 13 The video signal of the display circuit 16 is inserted into the camera identification code insertion circuit 1
7 is output. The camera identification code insertion circuit 17 automatically generates an identification code of the surveillance camera from the switching selection signal in the input video signal, and superimposes the identification code on the video signal and outputs it to the video signal line 10a.

As described above, according to the fourth embodiment,
The identification code superimposed on the video signal has an effect that the displayed video and the monitoring camera can be identified at the same time.

[0020]

According to the first aspect of the present invention,
When the command signal is received on the control signal line, the video signal of the surveillance camera can be output to the video signal line without delay. According to the second aspect of the present invention, when a surveillance camera to be divided and displayed is selected by a selection control circuit in accordance with a command from the center monitoring system, and a command is given to a video switch circuit to switch to the video division display circuit, the video is displayed. It is possible to output a desired divided and displayed video signal to the signal line, and it is possible to simultaneously monitor a wide range of positions. According to the third aspect of the present invention, the monitoring position can be automatically switched and displayed at regular time intervals, so that the outline of the monitoring position can be easily grasped. According to the fourth aspect of the invention, there is an effect that the displayed image and the monitoring camera can be simultaneously identified by the identification code superimposed on the image signal.

[Brief description of the drawings]

FIG. 1 is a schematic block diagram illustrating a configuration of a surveillance camera device according to Embodiment 1 of the present invention.

FIG. 2 is a schematic block diagram illustrating a configuration of a surveillance camera device according to Embodiment 2 of the present invention.

FIG. 3 is a schematic block diagram illustrating a configuration of a surveillance camera device according to Embodiment 3 of the present invention.

FIG. 4 is a schematic block diagram illustrating a configuration of a surveillance camera device according to Embodiment 4 of the present invention.

FIG. 5 is a schematic block diagram showing a configuration of a monitoring camera system in a conventional example.

FIG. 6 is a schematic block diagram showing a configuration of a monitoring camera device in a conventional example.

[Explanation of symbols]

 10a video signal line 10b control signal line 11 camera mounting unit 11a monitoring camera 12 communication control circuit 13 video switch circuit 14 selection control circuit 15 video division display circuit 16 automatic switching circuit 17 camera identification code insertion circuit

Claims (4)

[Claims] 1. A camera mounting unit in which a plurality of surveillance cameras are arranged in a multifaceted structure so as to be able to monitor the surroundings, a communication control circuit for receiving a command to select the surveillance camera from a remote communication line, and the contents of the command. A surveillance camera device comprising: a selection control circuit that interprets and outputs a selection signal; and a video switch circuit that extracts a video signal of the selected camera and transmits the video signal through a communication line. 2. When a division display switching selection signal is input by the selection control circuit, a surveillance camera receiving a command is selected, and compression is performed so that each video signal can be divided and displayed on one screen. 2. The surveillance camera device according to claim 1, further comprising a video division display circuit for combining and outputting the video signal to a video switch circuit. 3. When an automatic switching display command is inputted from the selection control circuit, the commanded switching selection signal is sequentially output to the video switch circuit to sequentially select a plurality of cameras and take out a video signal. A switching circuit is provided.
Or the surveillance camera device according to 2. 4. The surveillance camera device according to claim 1, further comprising a camera identification code insertion circuit for adding an identification code of a camera currently selected by the selection control circuit to a video signal.