KR0129792B1 - Cctv camera for zoom type - Google Patents

Abstract

Disclosed is a monitoring camera of zoom recording type. The camera comprises a zoom motor(200), a zoom motor driver(500), control keys(700) and a zoom encoder(900). The control keys(700) are prepared for setting a interval time and a zoom magnification. The zoom encoder(900) determines the location of zoom. Thereby, a special area can be close up periodically according to the variation of interval time and zoom magnification.

Description

Surveillance Camera with Zoom Recording

1 is a block diagram showing the configuration of a surveillance camera driven by a zoom recording method according to the present invention.

2 shows keys for setting time intervals and zoom ratios.

3 is a flowchart for setting time intervals and zoom magnifications.

4 is a view showing the interval between the switching time between the normal mode and the zooming mode of the surveillance camera according to the present invention.

5 is a view showing a zooming operation in the display device according to the present invention.

* Explanation of symbols for main parts of the drawings

100: zoom lens 200: zoom motor

300: solid-state imaging device 400: signal processing / driver

500: zoom motor drive unit 600: control unit

700: setting key 800: liquid crystal display

900: zoom encoder

The present invention relates to a zoom recording method for a surveillance camera, and in particular, to set a zoom magnification and a periodic zoom operation time interval at a fixed angle of view of the surveillance camera, and to enlarge or enlarge the zoom magnification at a predetermined period by the setting value. The present invention relates to a surveillance camera of a zoom recording method that can be reduced.

Since the conventional surveillance camera can monitor only a fixed angle of view (angle in the horizontal plane) in a fixed or rotating state, the user cannot zoom in or out at a predetermined interval in the recorded screen of the surveillance camera.

Therefore, surveillance cameras installed in subway stations, banks, and public buildings do not accurately recognize objects in the distance and cannot expect clear picture quality. In addition, although the conventional surveillance camera uses a fixed focus lens, the fixed focus lens is fixed at the focal length set in the lens circuit, and there are various inconveniences in practical use. In addition, the conventional fixed focus lens limits the size of a constant screen at the same distance, so that the camera needs to be closer to the subject or closer to the object in order to obtain a larger image. Therefore, the conventional surveillance camera is mainly installed in a fixed place, it is not possible to adjust the size of the screen. In other words, the conventional surveillance camera can only catch the projectile by a certain angle, and in order to hold the subject large or far away, the subject must be approached or positioned farther away, and the focal length of the zoom lens can be changed manually by remote control. There was a problem that can only shoot.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problem, and an object of the present invention is to set a zoom operation time interval (interval time) and a zoom ratio for periodically operating at a fixed time interval on a fixed angle of view of a surveillance camera. The present invention provides an improved surveillance camera capable of periodically zooming in or zooming out a specific important portion as well as the entire angle of view through the entire angle of view.

According to an aspect of the present invention, a zoom lens unit for receiving an image of a subject to be monitored, a zoom motor for driving zooming of the zoom lens unit, a solid-state imaging device for converting an image of the subject into an electrical signal, A signal processor for converting an electrical signal provided from the solid-state imaging device into a video image signal, a zoom motor driver for driving the zoom motor, and a zoom position by determining a zoom position to zoom an image of an object or to select an angle of view A zoom encoder for generating data, a control unit providing a driving signal to the zoom motor driving unit according to the zoom position data from the encoder and providing a display control signal for displaying a current state of the camera; For surveillance of zoom recording method including liquid crystal display device displaying current status In the camera, is configured to include the zoom ratio setting means for setting a zoom magnification of the zoom operation time setting means, the zooming of said zoom lens for performing a zooming operation of said zoom lens at the predetermined time intervals.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram illustrating a configuration of a surveillance camera that performs a zooming operation of a surveillance camera according to the present invention. The zoom lens 100 receives an external image and continuously adjusts a lens to capture a subject by varying a focal length. A zoom motor 200 for zooming, a solid-state imaging device 300 for converting an external image sensed by the zoom lens 100 into an electrical signal, driving the solid-state imaging device 300 and a solid-state imaging device ( Signal processing / driver 400 for converting the electrical signal output from the 300 into an image signal, the control unit 600 for controlling the zoom operation of the surveillance camera, the setting key 700 for setting the time interval and zoom magnification, present Display the zooming state and the operation state by the setting key 700, the zoom encoder 900 to determine the current zoom position, the video signal provided from the signal processing / driver 400 It consists of a monitor 1000 for display.

The detailed operation process of the surveillance camera according to the present invention configured as described above is as follows.

First, when an external image is input through the zoom lens 100, the solid-state imaging device 300 converts the brightness and the color of the received external image provided through the lens 100 into an electrical signal to process the signal processor / driver 400. Is provided.

At this time, the signal processor / driver 400 converts the electrical signal output from the solid-state imaging device 300 into an image signal, and the converted image signal is provided to the screen through the monitor 1000. The zoom motor 200 performs a zoom operation by converting a focal length of the lens according to the driving of the zoom motor driver 500. The zoom encoder 900 is configured to determine the position of the zoom so as to zoom an image to be photographed or to select an angle of view. The control unit 600 provides a time interval from the setting key 700, that is, a time interval for switching between the zooming mode and the normal mode, and the zoom position data and the provided time interval from the zoom encoder 900 when the zoom magnification setting data is provided. A display control signal for providing a zoom motor driving signal for driving the zoom motor in accordance with the result of combining the zoom magnification setting data, and for displaying the time interval and zoom magnification setting data provided from the setting key 700 on the screen. To the liquid crystal display device 800.

At this time, the liquid crystal display 800 displays the time interval and the zoom magnification setting data according to the input of the setting key 700 according to the display control signal provided from the controller 600 on the screen.

2 is a diagram illustrating the function of the setting key 700.

As shown in the figure, the setting key 700 includes a mode setting key, a mode set key, hours, minutes, seconds, and + and-keys. The mode setting key is a key for selecting a time interval or zoom magnification, and the mode set key is a key for completing the selection of the mode setting key. The hour, minute and second keys are keys for setting the time interval for switching from the zooming mode to the normal mode, and the (+) key or (-) key is for setting the zoom magnification. Mode setting key selects time interval or zoom magnification. To set time interval, press mode setting key and then press hour, minute, second key to set arbitrary time. Then use the mode set key to complete the setting. Press the mode setting key again to switch to the zoom magnification mode. At this time, set zoom magnification with (+) key or (-) key and press mode set key to complete. In this case, the user checks the time interval and zoom magnification for switching from the zooming mode to the normal mode through the liquid crystal display device 800.

3 is a flowchart illustrating a process for setting a mode switching time interval of a surveillance camera and setting a zoom ratio, which will be described in detail with reference to FIG. 1.

The control unit 600 sets the mode switching time interval setting and the zoom magnification in step 20. When the mode setting key of the setting key 700 is pressed once, the control unit 600 proceeds to step 22 to determine the setting key 700. Set the normal mode time T1 by the hour, minute, and second keys, proceed to step 24, and set the zooming mode time T2 by the hour, minute, and second keys of the setting key 77, and step 26 Proceeds to.

When the mode set key of the setting key 700 is pressed once, the control unit 600 proceeds to step 26 and finishes setting the mode switching time T1 set in the above-described step, and proceeds to step 28 to zoom in. Complete the mode time (T2) setting.

At this time, the control unit 600 proceeds to step 30 to display the current zoom position and the zoom ratio data for the (+) or (-) key of the input setting key 700 on the screen. The control unit 800 controls the user to set the zoom magnification to a desired magnification, and the process proceeds to step 32, when the mode set key of the setting key 700 is pressed once, on the zoom magnification data input in step 30. Correspond to setting and completing the zoom mode.

4 shows the switching time intervals between the normal mode and the zooming mode set in FIG. 3, and when the normal mode time interval is set to T1 and the zooming mode time interval is set to T2 using the setting key of the block 700, the monitoring camera Maintains the initial setting for T1 time in normal mode, and then zooms in or zooms out after T1 time in normal mode to maintain T2 time, then returns to normal mode after T2 time elapses. Repeat the return action. At this time, zoom-in is a technique of getting a close-up of a subject to monitor a situation around it, and then zooms in on only a certain subject, and zoom-out is a technique of bringing the subject's surroundings closer to the subject's surroundings with a close-up of the subject first. .

5 illustrates an operation of zooming in the liquid crystal display 800. When the current zoom position data is provided from the zoom encoder 900, the controller 600 displays the current zoom position on the liquid crystal display 800. When the desired mode, that is, the normal mode or the zooming mode, is set by the mode setting key of the setting key 700, the zoom ratio for the input (+) or (−) is displayed on the liquid crystal display 800. At this time, A is the state of the liquid crystal display when the (+) key of the setting key 700 is pressed, and B is the state of the liquid crystal display device 800 when the (-) key of the setting key 700 is pressed. to be.

As described above, the zoom recording monitoring camera according to the present invention can freely set a predetermined mode switching time interval, that is, a normal mode and a switching time interval, and periodically monitor the whole or a specific portion of the subject. There is an effect that can be done.

Claims (2)

A zoom lens unit 100 for receiving an image of a subject to be monitored, a zoom motor 200 for driving zooming of the zoom lens unit 100, and a solid-state image sensor 300 for converting an image of the subject into an electrical signal. ), A signal processor 400 for converting an electrical signal provided from the solid-state imaging device 300 into a video image signal, a zoom motor driver 500 for driving the zoom motor 200, or zooming an image of an object. Determining a zoom position to select an angle of view and providing a driving signal to the zoom motor driver 500 for generating the zoom position data and the zoom motor driver 500 according to the zoom position data from the encoder 900. A zoom recording room including a control unit 600 for providing a display control signal for displaying a current state of a camera and a liquid crystal display device 800 for displaying a current state of a camera under control of the control unit 600. In the monitoring camera for a zoom operation time setting means for performing a zoom operation of the zoom lens unit 100, at the predetermined time intervals; And a zoom magnification setting means for setting a zoom magnification for a zoom operation of the zoom lens unit (100). The method of claim 1, wherein the zoom operation time setting means comprises: a mode switching setting key for performing a zoom operation at predetermined time intervals, a mode sec key for completing the zoom magnification and the zoom operation time interval setting for the zoom operation, Hour, minute, and second keys to set the zoom operation time interval; And a control unit 600 which controls to perform a zoom operation at every zoom operation time interval input through the key, wherein the zoom magnification setting means comprises: setting a fraud mode setting key, the mode set key, and the zoom magnification ( +) Key or (-) key; And a control unit (600) for controlling a zoom operation at a zoom ratio input through the key.