JPH07203262A - Surveilance camera apparatus - Google Patents

Abstract

PURPOSE: To recognize the appearance of a subject coming into a monitoring area by providing a zoom lens, and alternately and continuously operating it in a normal mode and a zoom mode. CONSTITUTION: A control unit 30 checks a time period in which a normal mode for recognizing the picture of a subject having fixed focal length is switched to a zoom mode for recognizing the picture of a subject having variable focal length at the time of the monitoring operation of a monitoring camera 100. Then, a zoom lens 12 is driven through a zoom control unit 40 within a time period and with zoom magnification inputted from a key matrix 20 and stored in an RAM 34, and the normal mode and the zoom mode are alternately switched. Thus, monitoring can be attained by continuously switching the normal mode and the zoom mode.

Description

Detailed Description of the Invention

[0001]

The present invention relates to a surveillance camera device (surveil).
lance camera system), and more particularly to an improved surveillance camera device used for surveillance purposes in which a normal mode and a zoom mode are alternately and continuously performed during operation.

[0002]

2. Description of the Related Art Generally, a conventional surveillance camera device is attached to a specific area, for example, a subway station, a bank, a public facility, etc. to monitor and inspect the specific area. In these surveillance camera devices, a fixed focal length lens (fixed focal length lens) that recognizes an image of a subject with a fixed focal length is generally used.
A fixed-mounted camera with a lens) is used. Therefore, such a normal surveillance camera device has a limited ability to recognize the appearance of a subject entering the surveillance area.

[0003]

SUMMARY OF THE INVENTION Therefore, a main object of the present invention is to provide an improved surveillance camera device capable of continuously operating a normal mode and a zoom mode alternately and monitoring a predetermined area. Is to provide.

[0004]

In order to achieve the above object, the present invention relates to a surveillance camera apparatus for observing a subject in a surveillance area in which a camera is attached, and a zoom lens for recognizing an image of the subject in the surveillance area. A key matrix having a camera for generating a video signal corresponding to the image and a plurality of key means, wherein the plurality of key means comprises a camera at a fixed focal length for a first time period. Normal mode key for selecting the normal mode for recognizing the image of, the zoom mode key for selecting the zoom mode for the camera to recognize the image of the subject having the variable focal length to the second time period, corresponding to the variable focal length Zoom magnification key for selecting a zoom magnification, a start key for generating a start signal to start the monitoring operation of the camera, and the first and second tie keys. And those containing numeric keys for selecting the period, the camera, characterized in that it comprises a control unit for operating the normal mode and continuously 互交 to the zoom mode.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The surveillance camera device of the present invention will be described in more detail below with reference to the drawings.

FIG. 1 is a block diagram of a surveillance camera apparatus 100 that performs surveillance operation in an alternating combination of a normal mode and a zoom mode, which is a means for recognizing an image of a subject according to the present invention. It is shown. The surveillance camera device 100 includes a camera 10 and a key matrix 2
0 or remote controller, control unit 30, zoom motor drive unit 40, signal processing unit 60 and monitor 80
including.

The camera 10 drives the zoom lens 12 under the control of the zoom lens 12 and the zoom motor drive unit 40 which recognizes an optical image of a subject with a fixed focal length and a variable focal length by selecting an appropriate zoom magnification. The motor 14 is included. The camera 10 converts an image of a subject into a video signal. The converted video signal is transmitted to the A / D converter 50, which converts the video signal into a digital form. After this, the video signal in digital form is sent to the signal processing unit 60. The video signal processed by this signal processing unit 60 is a D / which converts the licensed video signal into an analog form.
The image of the subject is sent to the monitor 80 through the A converter 70.

The key matrix 20 is a control unit 30.
It is connected to and arranged from a large number of keys. As shown in FIG. 2, the key matrix 20 includes the first camera 10
A normal mode key 22 for selecting a normal mode of a function of recognizing an image of a subject through the zoom lens 12 at a fixed focal length to the time period " _TN ", and a variable of the camera 10 to the second time period " _TZ ". A zoom mode key 23 for selecting a zoom mode of a function of performing a monitoring operation through the zoom lens 12 having a focal length, a zoom magnification key 24 for selecting a zoom magnification for the zoom lens 12 in the zoom mode, a time period T _N , A numeric key 25 for selecting data for T _Z and zoom magnification, a line feed key 26 for completing the selection of the numeric key 25, a start key 27 for starting the monitoring operation, and an end key for ending the monitoring operation of the monitoring camera device 100. 28 and.

The key matrix 20 may be embodied as a remote controller having the same structure as that of the key matrix.

The control unit 30 is a ROM (read only memory) in which various system programs are stored.
Memory) 32, data for time periods T _N , T _Z ,
It has a RAM (random access memory) 34 that stores zoom magnification data that can be changed or updated through the use of the numeric key 25, and a central processing unit (CPU) 36 that controls the surveillance camera device 100.
Further, the control unit 30 includes a timer (not shown) for checking the time periods T _N and T _Z in the normal mode and the zoom mode during the monitoring operation of the monitoring camera device 100.

The control unit 30 sends a motor control signal to the zoom motor drive unit 40 to drive the zoom motor 14. The zoom motor drive unit 40 sends the zoom motor drive signal to the zoom motor 14 in response to the motor control signal from the control unit 30.

FIG. 3 shows a data input routine necessary for executing the monitoring operation of the monitoring camera apparatus 100.

As shown in FIG. 3, in step S11, the control unit 30 subsequently checks the rising edge of the input open signal from the normal mode key 22 for switching the time period T _N. If the control unit 30 receives the input from the normal mode key 22, the control process proceeds to step S12.

In step S12, the time period T _N
Is switched by the numeric key 25. After that, the switching of the time period T _N is completed by pressing the line feed key 26, and the process proceeds to step S13 where the data for the normal time period T _N is stored in the RAM 34.

Thereafter, in step S14, the control unit 30 determines whether the zoom mode key 23 has been pressed. If the determination is affirmative, the process proceeds to step S14.
Proceeding to 15, the zoom time period T _Z is set by the numeric key 25. Then, in step S16, the setting of the time period T _Z is completed by pressing the line feed key 26, and the data for the time period T _Z is RA.
It is stored in M34.

Thereafter, in step S17, the control unit 30 checks whether the zoom magnification key 24 has been pressed. If the control unit 30 receives an input from the zoom factor key 24, the process proceeds to step S18. In step S18, the zoom magnification is input by using the numeric key 25. Then, in step S19, the setting of the zoom magnification is changed by the line feed key 26.
This is completed by pressing and the data for this zoom magnification is stored in the RAM 34.

The operation of the surveillance camera device 100, which executes the surveillance operation according to the input data, will be described in detail with reference to FIG.

As shown in FIG. 4, in step S31, the monitoring operation of the monitoring camera apparatus 100 is started by pressing the start key 27 to send a monitoring start signal to the control unit 30.

In step S32, the control unit 3
0 in response to the start signal from the start key 27, as shown in FIG. 5, when the duration of the time period T _N, the monitoring camera apparatus 100 is in between the zoom lens 12 is fixed focus lens of the time period T _N Do to work in normal mode.

In step S33, under the normal mode, the control unit 30 continuously determines whether the elapsed time period T ₁ while implementing the normal mode still exists within the predetermined normal mode time period T _N. To check. In the same step, if the elapsed time period T ₁ reaches the time period T _N , the process proceeds to step S34.

In step S34, the control unit 3
0 allows the camera 10 to perform a monitoring operation in a zoom mode for a predetermined time period T _Z , as shown in FIG. 5, in which the zoom lens 12 has the zoom set in step S18. The magnification is adjusted.

Then, in step S35, the control unit 30 compares the time period T ₂ consumed while operating in the zoom mode. In the same step, if the consumed time period T ₂ is the predetermined time period T
_{If Z} is reached, the process proceeds to step S36.

In step S36, the control unit 3
0 determines whether or not the end key 28 is pressed so as to end the monitoring operation of the monitoring camera apparatus 100. If the determination is affirmative, the monitoring operation of the monitoring camera apparatus 100 is ended. However, if the determination is negative, the process returns to step S32 to repeat the above-described monitoring operation until the input signal from the end key 28 is confirmed.

Although the present invention has been described in terms of a preferred embodiment, various modifications will occur to those skilled in the art without departing from the scope of the invention.

[0025]

Therefore, according to the present invention, it is possible to continuously switch the operation between the normal mode and the zoom mode and watch the area.

[Brief description of drawings]

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

FIG. 2 is a diagram showing an arrangement of a large number of keys on the key matrix shown in FIG.

FIG. 3 is a flowchart illustrating an operation of the surveillance camera device.

FIG. 4 is a flowchart illustrating an operation of the surveillance camera device.

FIG. 5 is a diagram showing a relationship between a normal mode and a zoom mode used in the surveillance camera device of the present invention.

[Explanation of symbols]

 10 Camera 20 Key Matrix 22 Normal Mode Key 23 Zoom Mode Key 24 Zoom Magnification Key 25 Numeric Key 30 Control Unit 40 Zoom Motor Drive Unit 60 Signal Processing Unit 80 Monitor 100 Surveillance Camera Device

Claims (1)

[Claims] 1. A surveillance camera device for monitoring a subject in a surveillance area to which a camera is attached, comprising a zoom lens for recognizing an image of the subject in the surveillance area, and generating a video signal corresponding to the image. A key matrix having a plurality of key means, wherein the plurality of key means is a normal mode key for selecting a normal mode in which the camera recognizes an image of a subject in a fixed focal length to a first time period, A zoom mode key for selecting a zoom mode for recognizing an image of a subject having a variable focal length for two time periods, a zoom magnification key for selecting a zoom magnification corresponding to the variable focal length, and a camera monitoring operation start A start key for generating a start signal, and a numeric key for selecting the first and second time periods; A surveillance camera device, comprising: a control unit for operating the camera continuously and alternately in the normal mode and the zoom mode.