JPH10172082A - Picture transmission device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To indicate which sensor for prevention of crime generates an alarm with respect to a picture transmission device. SOLUTION: A picture transmission device is provided with a display panel 20, and LEDs 21 are arranged on this display panel 20 correspondingly to sensors for prevention of crime. When a sensor generates an alarm in the guard mode, a controller 9 transmits an image, which is picked up by a monitor camera corresponding to this sensor, to a center device and lights the LED corresponding to this sensor out of LEDs 21 on the display panel 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image transmission apparatus for monitoring a monitoring area with a monitoring camera and transmitting an image captured by the monitoring camera to a security center via a telephone line when an abnormality occurs in the monitoring area. About.

[0002]

2. Description of the Related Art FIG. 3 shows a configuration example of a conventional image transmission apparatus. In the figure, 1 ₁ and 1 ₂ are surveillance cameras (hereinafter simply referred to as cameras), 2 ₁ and 2 ₂ are security sensors (hereinafter simply referred to as sensors), 3 is a switching circuit, 4 is an A / D converter, Reference numeral 5 denotes a field memory, 6 denotes a compressor, 7 denotes a memory device, 8 denotes a modem, 9 denotes a control device, 10 denotes an image transmission device, 11 denotes an operation device, 12 denotes a bus, and L denotes a telephone line.

[0003] Surveillance cameras (hereinafter simply referred to as cameras) 1 ₁ and 1 ₂ are installed at predetermined places in a surveillance area of a security destination, such as a tenant building or an office building, which is a subject of security. The sensor 2 ₁ at a predetermined position of the monitored area that is the security of the subject, 2 ₂ are installed, the output of these sensors 2 _1, 2 ₂ are input to the control unit 9.
Various sensors such as a hot-wire sensor for detecting a moving object and a magnet switch for detecting that a window or a door has been opened can be used as these sensors 2 ₁ and 2 _2. All are assumed to be heat ray sensors.

[0004] Then, the camera ₁ 1, 1 ₂ and the sensor 2 _1,
2 ₂ associated to the. Which camera corresponds to which sensor is registered in the control device 9 in advance. This camera and the correspondence between the sensor can be determined arbitrarily, where easy to the camera 1 ₁ and the sensor 2 ₁ associated with understanding is camera 1 ₂ and the sensor 2 ₂ is associated with Suppose you have Although it is normal to provide two or more cameras and sensors, a case will be described here in which two cameras and two sensors are provided.
The following description is naturally the same when three or more cameras and sensors are provided.

[0005] is operating the camera 1 _1, 1 ₂ at all times, video signals from the camera 1 _1, 1 ₂ are respectively inputted to the switching unit 3. The switching device 3 is one which is a switch circuit, by a control signal from the control unit 9, the camera 1 _1, 1 to the subsequent stage switching cyclically video signal every predetermined time from ₂ The output has been made.

[0006] Now, assuming that the video signal captured by the camera 1 ₁ switcher 3 is selected, the video signal is made and the digital image data by the A / D converter 4, one field in the extraction Then, the data is temporarily written to the field memory 5. Thereafter, the image data is read from the field memory 5, compressed by the compressor 6, and written to the memory device 7.

[0007] or more, the process is completed switching device 3 is switched to select the video signal from the camera 1 _2, the process facilities described above for the video signal from the camera 1 ₂ output from the switching unit 3 Is done.

By repeating the above processing,
Data of a still image captured is written into the memory device 7 alternately camera 1 _1, 1 _2.

The writing and reading operations of the field memory 5 and the compression operation of the compressor 6 are controlled by a control signal from a control device 9. What kind of method is used as a data compression method in the compressor 6 is arbitrary, but generally, JPEG (Joint Photog) is used.
The method is often used.
Although the field memory 5 is used in FIG. 3, it is apparent that a frame memory may be used instead of the field memory 5. When the capacity of the memory device 7 becomes full, old image data is sequentially updated with new image data.

The modem 8 bidirectionally exchanges various data with a center device (not shown in FIG. 3) installed at a security center of a security company.

The control device 9 controls the overall operation of the image transmission device 10 and is composed of a processing unit using a CPU or MPU. The memory device 7 is connected via a bus 12.

The operating device 11 is used to set an operation mode of the control device 9, and here, it is assumed that two modes, ie, a warning mode and a release mode, can be set. The operation device 11 corresponds to a device usually called a remote controller or the like. Although the operation device 11 is shown as being separate from the image transmission device 10 in FIG. 3, the operation device 11 may be integrated with the image transmission device 10.
Although only one operating device 11 is shown in FIG. 3, this is a convenient measure to avoid complicating the drawing and to facilitate understanding. Are usually provided in plurals, specifically, for example, for each tenant, or for each security area.

Next, the image transmission apparatus 10 having the configuration shown in FIG.
The operation of will be described briefly. Now, it is assumed that the warning release mode is set by the operation device 11. Sensor 2
_1, 2 ₂ indicates the detection of the moving object and detects the movement of a person since the operating firm signal (hereinafter, this signal is referred to as alarm signals) is output to the control device 9 is released mode If the setting is made, the alarm signal is ignored. In this case, the control device 9 only controls the switch 3 to switch at predetermined intervals. Thus the video signal from the camera 1 _1, 1 ₂ is switched cyclically by the switching device 3, is digitized by A / D converter 4, the still image data is written in the field memory 5 are read out therefrom The operation of being compressed by the compressor 6 and being written to the memory device 7 is repeatedly performed.

Next, the operation when the alert mode is set by the operation device 11 will be schematically described.

In the alert mode, when the control device 9 receives an alarm signal from a certain sensor, the alarm signal is a signal indicating an abnormality. Therefore, the control device 9 controls the switching unit 3 to output the alarm signal. Select the camera corresponding to.
As a result, the still image captured by the camera is subjected to the above-described processing and written into the memory device 7.

When the writing of the still image from the camera to the memory device 7 is completed, the control device 9
Disables writing to the memory device 7 by a control signal. At this time, the memory device 7 has two still images of the still image captured by the camera, the still image captured before the sensor outputs the alarm signal and the still image captured after the alarm signal is output. This means that the still image data has been written.

The control device 9 fetches these two still image data from the memory device 7 via the bus 12, and furthermore, data indicating which security sensor outputs the alert signal to the image data (hereinafter, this data is referred to as The data is referred to as sensor information) and transmitted by the modem 8 to the center device. This is an abnormal notification.

The image data and the sensor information are received by the center device, demodulated, decompressed and displayed on the monitor, so that the operator of the center device can grasp the situation before and after the occurrence of the abnormality. it can.

The control unit 9, the transmission of these abnormal data and still image data indicating the ends, as well as the write-protect of the memory device 7, the video signal from the camera 1 _1, 1 ₂ by switching device 3 Switch cyclically.

In the alert mode, the control device 9 repeats the above-described operation every time the sensor outputs an alarm signal.

[0021]

By the way, when an operator in charge of the center apparatus receives an abnormality report from a certain image transmission apparatus, the operator reports the abnormality to a guard located at the nearest station. The image transmission device is dispatched to a security destination where the image transmission device is installed, and an instruction is issued.As described above, the conventional image transmission device corresponds to the sensor when the sensor outputs an alarm signal in the alert mode. Since only the image captured by the camera is transmitted, the dispatched security staff goes to the security destination and looks at the image transmission device to find out which sensor output the alarm signal, that is, where there is an abnormality. Because it was not possible to clearly recognize the location, it was difficult to immediately determine which part to investigate.

Of course, if the operator of the center device is contacted by telephone or the like, it is possible to know the location of the abnormality, but it is troublesome to contact the operator of the center device each time.

An object of the present invention is to solve the above-mentioned problem, and an object of the present invention is to provide an image transmitting apparatus capable of clearly knowing which sensor has output the alarm signal.

[0024]

According to another aspect of the present invention, there is provided an image transmitting apparatus including a monitoring camera and a security sensor, the image transmitting apparatus including a display unit. In the case where the security sensor outputs a signal indicating an abnormality when the alert mode is set, display is performed on the security sensor that has output the signal indicating the abnormality.

According to a second aspect of the present invention, there is provided an image transmitting apparatus, wherein a surveillance camera and a security sensor are connected to each other, and when the security sensor outputs a signal indicating abnormality when the alert mode is set, An image transmission device that transmits an image captured by a surveillance camera associated with a security sensor, includes a display unit, and outputs a signal indicating an abnormality when the security sensor is set when a security mode is set. Is characterized in that a display related to the security sensor that has output a signal indicating the abnormality is performed.

[0026]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing an embodiment of an image transmission device according to the present invention. In the drawing, reference numeral 20 denotes a display panel. Note that the same or equivalent components as those shown in FIG. 3 are denoted by the same reference numerals, and redundant description will be omitted.

The configuration shown in FIG. 1 is obtained by adding a display panel 20 to the configuration shown in FIG. Display panel 2
2, for example, as shown in FIG. 2, includes a light emitting element 21, such as an LED, a warning button 23, a release button 24, and a reset button 25. Further, a display column 22 is provided beside the light emitting element 21. I have.

The light emitting elements 21 are provided by the maximum number of sensors that can be connected to the image transmission apparatus 10. Therefore, since eight light emitting elements 21 are provided in FIG. 2, it can be understood that a maximum of eight sensors can be connected to the image transmission device 10.

In the display column 22, the name of the place where the sensor corresponding to the left light emitting element 21 is installed is written. Usually, the display column 22 can be attached with a long and thin paper.

The alert button 23 is a button for setting the alert mode, and the release button 24 is a button for setting the release mode. These two buttons, the alert button 23 and the release button 24, have the same functions as the operation device 11.

The reset button 25 is a button for resetting the lit or blinking light emitting element 21 to turn it off.

[0032] Now, operation in the release mode is the same as described above, the control unit 9 also receives the alarm signal from the sensor 2 ₁ or sensor 2 ₂ ignores it, also with respect to the display panel 20 No control is performed.

[0033] Upon receiving the alarm signal from the sensor 2 ₁ or sensor 2 ₂ during the alert mode, the controller 9 sensor information to the image data captured by the camera corresponding to a sensor that outputs the alarm signal as described above To the center device, and the light emitting element 21 of the display panel 20.
The light emitting element corresponding to the sensor is turned on or off.

In the above embodiment, the display panel 20
Although the light emitting element 21 is provided corresponding to the sensor, the display panel 20 is constituted by a display means such as a liquid crystal display device, and when the sensor outputs an alarm signal in the alert mode, the display means is provided on the display means. It is also possible to display information such as the installation location of the sensor that has output the alarm signal. In short, when the sensor outputs the alarm signal in the alert mode, the sensor that outputs the alarm signal What is necessary is just to be able to display which place is installed.

As described above, when a security guard is dispatched, by looking at the display panel 20 of the image transmission apparatus 10, it can be determined which sensor has output the alarm signal and which location has an abnormality. Since it is possible to easily and clearly recognize whether or not there is, it is possible to quickly conduct an investigation.

[Brief description of the drawings]

FIG. 1 is a diagram showing an embodiment of an image transmission device according to the present invention.

FIG. 2 is a diagram showing a configuration example of a display panel 20 of FIG.

FIG. 3 is a diagram illustrating a configuration example of a conventional image transmission device.

[Explanation of symbols]

1 ₁ , 1 ₂ ... surveillance camera, 2 ₁ , 2 ₂ ... security sensor, 3
... Switching circuit, 4 ... A / D converter, 5 ... Field memory, 6 ... Compressor, 7 ... Memory device, 8 ... Modem, 9 ...
Control device, 10 image transmission device, 11 operation device, 12
.. Bus, 20 display panel, 21 light emitting element, 22 display field, 23 warning button, 24 release button, 25 reset button, L telephone line.

Continued on the front page (51) Int.Cl. ⁶ Identification code FI H04N 7/18 H04N 7/18 F

Claims (2)

[Claims] 1. An image transmission apparatus comprising a surveillance camera and a security sensor connected to each other, the display device comprising a display means, and when the security sensor outputs a signal indicating an abnormality when the alert mode is set. An image transmission device for displaying a security sensor that outputs a signal indicating the abnormality. 2. A surveillance camera connected to a security sensor when a security camera is connected to the security sensor and a signal indicating an abnormality is output when the security sensor is set in a security mode. An image transmission apparatus for transmitting an image captured in the above, provided with a display means, when the security sensor outputs a signal indicating an abnormality when the alert mode is set, and outputs a signal indicating the abnormality An image transmission device for displaying a security sensor.