KR100734655B1 - Apparatus for controling focus and zoom of separate camera lens part - Google Patents

Abstract

The present invention relates to a focus and zoom control apparatus of a detachable camera lens unit, for example, in a surveillance camera in which a camera lens unit and a main body unit are separated and bound, a focus motor, a zoom motor, and a motor driving unit in the detachable camera lens unit. And a focus and zoom control value corresponding to a separation distance between the detachable camera lens unit and an arbitrary subject in a memory in a control box connected to the detachable camera lens unit. After storing in the form, when the camera installer inputs an arbitrary separation distance, the camera detects and outputs the corresponding focus and zoom control value to the motor driving unit of the detachable camera lens unit, thereby controlling focus and zoom of the detachable camera lens unit. Since the operation can be easily adjusted using the control box, Mera installer, will be very useful inventions that are able to more easily install a surveillance camera.

Surveillance camera, camera lens unit, zoom motor, focus motor, motor drive unit, control box, separation distance, zoom control value, focus control value

Description

Apparatus for controling focus and zoom of separate camera lens part}

1 illustrates a state in which a pan / tilt equipped with a general surveillance camera and a digital video recorder are connected and connected.

2 illustrates a configuration of a general removable camera lens unit and a main body unit,

3 illustrates a configuration of a focus and zoom control apparatus of a detachable camera lens unit according to the present invention;

4 is a table illustrating focus and zoom control values stored and managed in a database according to the present invention.

※ Explanation of code for main part of drawing

100: surveillance camera 200: pan / tilter

300: digital video recorder 20: zoom lens

21: focus lens 22: iris

23: CD 24: signal processing unit

25,40: Micom 26,42: Key pad

27: interface unit 30: zoom motor

31: focus motor 32: motor drive unit

41: memory 43: display

The present invention relates to a focus and zoom control apparatus of a detachable camera lens unit. For example, in a surveillance camera in which a camera lens unit and a main body unit are separated and bound, the camera installer may perform focus and zoom control operations of the detachable camera lens unit. The present invention relates to a focus and zoom control apparatus of a detachable camera lens unit for easy adjustment using a control box.

Generally, a PTZ surveillance camera equipped with a pan / tilt / zoom function is mounted on a pan & tilter fixedly installed on a ceiling of a specific place, for example, as shown in FIG. 1. The PTZ monitoring camera 100 may move the surveillance area to another direction by a panning operation rotated in the horizontal direction by the pan / tilt 200 and a tilting operation rotated in the vertical direction. Can be changed.

In addition, in the PTZ surveillance camera, the zoom lens may be variably adjusted in a tele or wide direction to enlarge or photograph a subject, and to capture the captured video image. As shown in FIG. 1, the digital video recorder 300 is located at a remote place.

The digital video recorder 300 outputs and displays the video image photographed by the PTZ surveillance camera through a monitor screen and records and stores the recording on a hard disk (HDD) included in the device. For example, an administrator who monitors a corresponding area through the monitor screen may arbitrarily remotely control a pan / tilt angle of the pan / tilt 200 by using a joystick or the like. .

On the other hand, in recent years, as shown in Figure 2, a lens-separated camera in which a camera lens part and a body part are separated and bound, has been developed and released in a low-cost supply type and commercialized. For example, the camera lens unit includes a zoom lens 20, a focus lens 21, and an iris 22, and the camera body unit includes a CD 23, a signal processor 24, and a microcomputer ( 25, a keypad 26, and an interface unit 27 are included.

In addition, the zoom lens 20 and the focus lens 21 of the camera lens unit may be adjusted to an arbitrary zoom state and focus state by a manual operation of the camera installer. For example, the camera installer may include the camera lens unit and the camera lens unit. After installing the surveillance camera with the main body attached to a high place such as a ceiling, a mobile phone or a radio is used to inquire the centrally located administrator of the current focus and zoom state.

As the administrator instructs, the focus and zoom states are manually adjusted. When the surveillance camera is installed in this way, the focus lens and the zoom lens of the surveillance camera installed in a high place are installed by the camera installer. Since manual adjustments must be directed by the administrator looking at the monitor, a problem arises in that a lot of time and effort are inefficiently spent installing the camera.

Accordingly, the present invention has been created to solve the above problems, and for example, includes a focus motor, a zoom motor, and a motor driving part in the detachable camera lens unit, and is connected to the detachable camera lens unit. SUMMARY OF THE INVENTION An object of the present invention is to provide a focus and zoom control apparatus of a detachable camera lens unit to more easily adjust a focus and zoom control operation of the detachable camera lens unit using a control box.

The focus and zoom control apparatus of the detachable camera lens unit according to the present invention for achieving the above object, the connecting means for connection connection with the detachable camera lens unit; Input means for inputting a separation distance between the detachable camera lens unit and an arbitrary subject; And control means for searching for and reading a focus and zoom control value corresponding to the separation distance from a memory to control the focus lens and the zoom lens of the detachable camera lens unit.

In addition, the memory stores focus and zoom control values corresponding to the separation distance between the detachable camera lens unit and an arbitrary subject in the form of a database. The detachable camera lens unit includes a focus motor, a zoom motor, and And a motor driving unit, wherein the motor driving unit receives the focus and zoom control values searched and read by the control unit, and drives the focus motor and the zoom motor.

Hereinafter, a preferred embodiment of a focus and zoom control apparatus of a detachable camera lens unit according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 3 illustrates a configuration of a focus and zoom control device of a detachable camera lens unit according to the present invention. For example, the control device may be manufactured as a control box that can be easily carried by a camera installer. As shown in FIG. 3, the microcomputer 40, the memory 41, the keypad 42, and the display unit 43 may be included.

In addition, the camera lens unit includes a zoom lens 20, a focus lens 21, and an iris 22, and a zoom motor 30, a focus motor 31, and a motor driver 32 are added. The motor driver 32 drives the zoom motor 30 and the focus motor 31 according to the focus control value and the zoom control value output from the microcomputer 40 of the control box. The zoom and focus states can be adjusted.

On the other hand, the memory 41 of the control box, as shown in Figure 4, the zoom control (Z_CTL #) value and the focus control value (F_CTL) corresponding to the distance (Distance) between the surveillance camera and any subject #) Is stored and managed in a database, for example, the zoom control value and the focus control value are optimal for the separation distance input by the camera installer arbitrarily through the keypad 42 of the control box. As the zoom control value and the focus control value, it may be preset by a plurality of experiment result values previously performed.

In the microcomputer 40 of the control box, when the camera installer inputs the separation distance between any one subject and the camera while the control box is connected to the detachable camera lens unit, the memory ( 41), the zoom control value and the focus control value stored in association with the separation distance are read.

For example, in the microcomputer 40, when the camera installer inputs the separation distance between the monitoring camera and the subject by using the keypad 42 as '1.5 m', the display unit 43 may be turned on. By operating the control, the display indicates that the separation distance of '1.5m' has been input, search the memory 41, and the second zoom control value Z_CTL_ # 2 stored in association with the separation distance of '1.5m' The second focus control value F_CTL_ # 2 is read.

In addition, the microcomputer 40 outputs the second zoom control value and the second focus control value read as described above to the motor driver 32 of the camera lens unit, and the motor driver 32 The zoom motor 30 is driven according to the second zoom control value received from the micom of the control box, and the focus motor 31 is driven according to the second focus control value received from the micom. .

Accordingly, the camera installer connects the control box to the camera lens in a state where the surveillance camera is installed at a high place such as a ceiling or before installation, and then the surveillance camera and any subject. By entering the separation distance between the camera, it is possible to easily adjust the focus and zoom state of the surveillance camera.

For reference, the focus control value and the zoom control value may be stored and managed by an arbitrary voltage value necessary to variably drive the focus motor and the zoom motor in the motor driving unit, and thus, the above-described preferred embodiment of the present invention. Is disclosed for the purpose of illustration, those skilled in the art will be able to improve, change, replace or add other various embodiments within the spirit and scope of the present invention disclosed in the appended claims below. .

The focus and zoom control device of the detachable camera lens unit according to the present invention constructed and operated as described above, for example, in a surveillance camera in which the camera lens unit and the main body unit are separated and bound, the focus motor and zoom in the detachable camera lens unit A focus and zoom corresponding to a separation distance between the detachable camera lens unit and an arbitrary subject in a memory in a control box connected to the detachable camera lens unit, including a motor and a motor driving unit. After storing the control values in the form of a database, when the camera installer inputs an arbitrary separation distance, the camera installer detects the corresponding focus and zoom control values and outputs them to the motor driving unit of the detachable camera lens unit. Negative focus and zoom control can be easily adjusted using the control box. It is a very useful invention that the camera installer can install the surveillance camera more conveniently because it can be saved.

Claims (4)

In the surveillance camera that the camera lens portion and the main body portion separated and fixed, Connecting means for connecting and connecting the camera lens with the main body separated; Input means for a user to arbitrarily input a separation distance between the camera lens unit and an arbitrary subject; Storage means for storing focus and zoom control values corresponding to a separation distance between the camera lens unit and a subject in a database; And a control means for searching for and reading a focus and zoom control value corresponding to the separation distance input by the user from the storage means to control the focus lens and the zoom lens of the camera lens unit. Each of the means is included in a control box separate from the main body portion, the focus and zoom control device of the detachable camera lens portion. delete The method of claim 1, The camera lens unit includes a focus motor, a zoom motor, and a motor driving unit. The focus and zoom control apparatus of the separate camera lens unit. The method of claim 3, wherein And the motor driving unit receives the focus and zoom control values retrieved and read by the control unit and drives the focus motor and the zoom motor.

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