JPH0946635A - Monitoring image recording and reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To record a state at recording in addition to an image in response to an image signal in the monitoring image recording and reproducing device recording an image signal from a monitor camera and reproducing the recorded image signal. SOLUTION: Image signals obtained by cameras 1a, 1b, 1c are recorded on a 1st magnetic disk 24 and various status data when the image signal is obtained are recorded on a 2nd magnetic disk 25 by using a key board 27. In the case of reproduction, the status data from the 2nd magnetic disk 25 are superimposed onto an image signal read from the 1st magnetic disk 24 at a superimposing circuit 26 and the status data are displayed on a monitor 3 together with a monitored image.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a monitoring image recording / reproducing apparatus for inputting and recording an image signal from a camera which images a monitoring target area and reproducing the image signal.

[0002]

2. Description of the Related Art A photographed image signal from a camera installed at a place to be monitored is input, the input signal is recorded on a recording medium, and the photographed image is displayed as needed to store,
There is a monitoring image recording / reproducing apparatus that monitors various places such as a house to ensure its safety. Such monitoring image recording / reproducing devices are used for monitoring in-stores at financial institutions and convenience stores, for monitoring automated teller machines, for monitoring passengers at railway institutions, and monitoring at toll gates on expressways. It is used for various purposes in modern society, such as for use in offices and for monitoring visitors and suspicious people at the entrance of apartments.

In this type of surveillance image recording / reproducing apparatus, a system using a hard disk is being adopted in place of the conventional time-lapse VCR. The system using this hard disk has less image deterioration of recording due to frequent access, as compared with the time-lapse VCR,
It is excellent in that there is no wear of the head when it is used for a long time, and the operation is easy with a GUI (graphical user interface).

[0004]

By the way, in such a monitoring image recording / reproducing apparatus, the image signal from the camera is recorded in the hard disk, and the recorded image signal is reproduced if necessary. Although the surveillance image is displayed on the monitor, in the conventional system, the situation data indicating the situation (the photographing place, the photographing condition of the camera, etc.) in which the image signal was obtained is not recorded, and therefore, the monitor reproduces the reproduced image. There is a problem in that it is inconvenient for the observer because the material in which the situation at the time of recording is written must be seen when observing.

The present invention has been made in view of such circumstances, and by recording the situation information indicating the situation when the image signal is obtained in addition to the image signal, the situation information is reproduced when the image signal is reproduced. It is an object of the present invention to provide a monitoring image recording / reproducing apparatus capable of reproducing and displaying status information at the same time and improving convenience for a monitor.

[0006]

A monitoring image recording / reproducing apparatus according to the present invention is a monitoring image recording / reproducing apparatus for recording an image signal from a camera for imaging a monitoring target area and reproducing the recorded image signal. It is characterized by comprising means for recording the information on the photographing condition when the recorded image signal is obtained, and means for reproducing the recorded information on the photographing condition together with the image signal.

In the monitoring image recording / reproducing apparatus of the present invention, the situation information when the image signal is obtained is recorded in the hard disk together with the image signal, and the situation information is reproduced at the same time when the image signal is reproduced. The status information is displayed in a manner of being superimposed on the image corresponding to the image signal. By doing so, the monitor can recognize various status information at a glance, and it is not necessary to search the recording material, and the operability of the monitor image recording / reproducing apparatus is improved for the monitor.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be specifically described below.

FIG. 1 is a schematic diagram showing an overall configuration using a security image recording / reproducing apparatus of the present invention. In FIG. 1, 1a, 1b, and 1c are three cameras installed at the locations to be monitored. Each camera 1a, 1b, 1c automatically picks up an image and outputs the obtained image signal to the recording / reproducing apparatus 2. The recording / reproducing apparatus 2 records the input image signal in a built-in hard disk, reproduces the image signal as necessary, and outputs it to the monitor 3. The monitor 3 displays an image according to the image signal. The processing operation of the recording / reproducing apparatus 2 is controlled by the user with the mouse 4.

FIG. 2 shows the recording / reproducing apparatus 2 in FIG.
FIG. 2 is a block diagram showing an internal configuration of the device. Recording / playback device 2
Is a camera selection / switching input analog image signal from each camera 1a, 1b, 1c and converting it to a digital image signal.
A / D conversion unit 21, V-RAM 22 for temporarily storing a digital image signal, compression / decompression unit 23 for compressing the image signal or expanding the compressed image signal, and recording the compressed image signal A first magnetic disk 24, a second magnetic disk 25 for recording situation data when an image signal is obtained,
A superimposing circuit 26 that superimposes the situation data read from the second magnetic disk 25 on the image signal reproduced from the first magnetic disk 24, and the supervisor inputs the situation data to be recorded on the second magnetic disk 25. Keyboard 27 and mouse 4,
Select the camera according to the instruction input from the keyboard 27, A /
A control unit 28 for controlling operation processing of the D conversion unit 21, compression / expansion unit 23, first magnetic disk 24, second magnetic disk 25, and the like;
It has a D / A converter 29 for converting the digital data from the superposition circuit 26 into analog data and outputting it to the monitor 3.

Next, the operation will be described. First, the operation during recording will be described. The image signals from the cameras 1a, 1b, 1c are selected by the camera selection / A / D conversion unit 21, digitally converted, temporarily stored in the V-RAM 22, and then compressed by the compression / decompression unit 23. It is recorded and recorded on the first magnetic disk 24. In addition, three cameras 1a, 1b, 1c
The switching of the image signal from is controlled by the control unit 28 according to a preset recording program. At this time, by the input of the monitor using the keyboard 27, the situation data regarding the image signal (various photography situation data such as the photographing place, the weather at the time of photographing, etc.) together with the information for specifying the image signal, the second magnetic disk. Recorded in 25.

The recording program setting will be briefly described below. Recording methods include alarm recording and continuous recording. Alarm recording is a method in which a sensor for detecting a specific situation change is provided at a place to be monitored, and the image signal is recorded for a predetermined time after the sensor detects the situation change and issues an alarm. On the other hand, continuous recording is a method of recording an image signal at regular intervals. For example, when a sensor detects that a user has started an operation with an automatic teller machine of a financial institution and starts recording an image signal from the timing when the alarm occurs,
An alarm record is set when recording only when a person appears at a specific place, and a continuous record is set when continuously recording inside a financial institution store even if nothing happens. The recording program set in this way is also used as the second status data.
It is recorded on the magnetic disk 25.

Next, the operation during reproduction will be described. The compressed image signal is reproduced from the first magnetic disk 24, the reproduced compressed image signal is expanded in the compression / expansion unit 23, and the restored image signal is temporarily stored in the V-RAM 22. It is output to the superposition circuit 26. On the other hand, the status data relating to the reproduced image signal is the second magnetic disk 25.
Is read from the superimposing circuit 26. Then, the situation data is superimposed on the image signal reproduced by the superimposing circuit 26, and the superimposed image data is converted into analog image data by the D / A conversion unit 29 and output to the monitor 3 to display the image. An image corresponding to the data is displayed.

FIG. 3 shows a display example of situation data on the monitor 3. FIG. 3 shows a display example in which a surveillance camera is installed at the entrance of the gate. The type of camera and the date and time when the image signal is obtained are automatically recorded together with the image signal, and this data is not included in the situation data in this example.

In the above example, when the image signal is recorded, the situation data relating to the image signal is recorded on the second magnetic disk 25 at the same time. However, in a general monitoring system, a monitor is resident. In most cases, the image signal is automatically recorded on the first magnetic disk 24. Therefore, it is needless to say that the situation data regarding each image signal may be written on the second magnetic disk 25 by the monitor using the keyboard 27 after the image signal is automatically recorded.

In the above example, the number of cameras to be installed is three, but this is an example, and it goes without saying that the present invention can be applied to any number of cameras.

[0017]

As described above, in the surveillance image recording / reproducing apparatus of the present invention, in addition to the image signal obtained from the surveillance camera, the situation data when the image signal is obtained are also recorded. , When displaying an image corresponding to an image signal, it is also possible to display information indicating the shooting status of the image, without the need for the surveillance person to search the file of the shooting record.
It is possible to instantly check various necessary related information and improve the convenience of the monitor.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing an overall configuration using a monitoring image recording / reproducing apparatus of the present invention.

FIG. 2 is a block diagram showing an internal configuration of the recording / reproducing apparatus in FIG.

FIG. 3 is a diagram showing a display example of situation data in the present invention.

[Explanation of symbols]

 1a, 1b, 1c Camera 2 Recording / playback device 3 Monitor 4 Mouse 21 Camera selection / A / D converter 22 V-RAM 23 Compressor / decompressor 24 First magnetic disk 25 Second magnetic disk 26 Superimposing circuit 27 Keyboard 28 Control section 29 D / A converter

Claims (1)

[Claims] 1. A monitoring image recording / reproducing apparatus for recording an image signal from a camera for capturing an image of a monitoring target area and reproducing the recorded image signal, and recording information on a photographing condition when the recorded image signal is obtained. An image recording / reproducing apparatus for monitoring, comprising: means for reproducing the information on the recorded photographing condition together with an image signal.