KR20100070134A - Apparatus and method for controlling pan tilt zoom - Google Patents

Abstract

PURPOSE: A PTZ control device and a method thereof are provided to simply store a command and spent time as PTZ pattern information to manage. CONSTITUTION: A memory(15) stores a command for a PTZ(Pan Tilt Zoom) operation and requirement time as PTZ pattern information. A microcomputer(13) searches the saved PTZ pattern information. The microcomputer performs PTZ operation corresponding to the PTZ pattern information. The microcomputer searches the command and the spent time recorded in the PTZ pattern information during a PTZ pattern information reproduction mode.

Description

Pan tilt zoom control and method {Apparatus and method for controlling pan tilt zoom}

The present invention is, for example, a dome camera in which a surveillance camera with a zoom function and a pan tilter with a pan function and a tilt function are installed in a dome case. Pan tilt zoom control device and method).

In general, as shown in FIG. 1, the dome camera 100 is equipped with a camera equipped with a zoom function and a pan & tilter for rotating the camera in a horizontal or vertical direction. .

The dome camera 100 is connected to a digital video recorder (DVR) located at a remote location through an interface to transmit a camera image, and the digital video recorder 200 displays the camera image. The monitor 300 is displayed on the screen or stored in a storage such as a hard disk (HDD).

In addition, the dome camera 100 adjusts the zoom ratio of the camera according to a pan tilt zoom command (PTZ Command) received from the digital video recorder 200 or a pan tilt zoom command (PTZ Command) received from an external controller. A variable zoom operation, a pan operation of rotating the camera angle in the horizontal direction, and a tilt operation of rotating the camera angle in the vertical direction are performed.

In addition, while performing the pan tilt zoom operation as described above, the position information is periodically detected and stored and managed as the pan tilt zoom pattern information.

For example, as shown in FIG. 2, when the pan operation is rotated from 0 degrees to 60 degrees, after waiting for 1 second, and then rotating the pan operation from 60 degrees to 150 degrees, the pan tilt zoom pattern In the information, fan start position information corresponding to fan 0 degrees is recorded in a 2-byte recording size.

Then, the pan position information detected three times during the pan movement from 60 degrees to 60 degrees is recorded with a 2-byte recording size (6 bytes in total), and 4 times while waiting for 1 second at 60 degrees pan. The pan position information detected over is recorded in 2-byte write size (8 bytes in total), respectively.

In addition, since the pan position information detected three times during the pan movement from 60 degrees to 150 degrees is recorded in a 2-byte recording size (6 bytes in total), the pan tilt zoom pattern information is recorded in all 22 bytes. In size, the pan tilt information is stored and managed in a nonvolatile memory such as, for example, a pyrom or flash memory included in a pan tilter in a dome camera.

Meanwhile, the dome camera searches for the pan tilt zoom pattern information stored and managed in the nonvolatile memory as described above, and performs the corresponding pan tilt zoom operation again. If the number is gradually increased, since the capacity of the nonvolatile memory is exceeded, a problem arises in that the pan tilt zoom pattern information is not normally stored and managed.

The present invention, for example, to perform a pan tilt zoom (PTZ) operation, to count the corresponding command (Command) and time required (Time), so that it can be easily stored and managed as the pan tilt zoom pattern information It is to provide a pan tilt zoom control device and method.

In accordance with another aspect of the present invention, a pan tilt zoom control method includes: counting a command and a corresponding time when a pan tilt zoom (PTZ) operation is performed and storing the same as pan tilt zoom pattern information; And retrieving the stored pan tilt zoom pattern information and performing a corresponding pan tilt zoom operation.

In the first step, in the pan tilt zoom pattern information recording mode, the command and time required may be stored as tilt zoom pattern information.

The step 2 may include searching for a command and a time required recorded in the pan tilt zoom pattern information in the pan tilt zoom pattern information reproducing mode.

In the pan tilt zoom pattern information, at least one command of a 1 byte recording size and a time required for a 2 byte recording size are recorded.

The pan tilt zoom pattern information may be stored in a pan tilter in a dome camera, and the command may be received from a digital video recorder or an external controller connected and connected through an interface.

In addition, the pan tilt zoom control apparatus according to the present invention includes: a storage means for storing a command and time required for performing a pan tilt zoom (PTZ) operation as pan tilt zoom pattern information; And control means for retrieving the stored pan tilt zoom pattern information and performing a corresponding pan tilt zoom operation.

The storage means may be a non-volatile memory in which a command having a 1 byte write size and a time required for a 2 byte write size are stored, wherein at least one pan tilt zoom pattern information is recorded.

The control means may search for the command and the time required recorded in the pan tilt zoom pattern information in the pan tilt zoom pattern information reproduction mode.

The command may be received from a digital video recorder or an external controller connected and connected via an interface.

The pan tilt zoom control apparatus and method according to the present invention is, for example, a pan tilt zoom by a command received from a digital video recorder (DVR) or an external controller connected or connected through an interface in a dome camera. When performing the (PTZ) operation, the corresponding command and the time required are counted and stored as the pan tilt zoom pattern information, and then the stored pan tilt zoom pattern information is retrieved. Therefore, by performing the corresponding pan tilt zoom operation again, the pan tilt zoom pattern information can be stored more simply. Therefore, by using a limited memory, a larger number of pan tilt zoom pattern information can be stored and managed. Will be.

Hereinafter, preferred embodiments of the pan tilt zoom control apparatus and method according to the present invention will be described in detail with reference to the accompanying drawings.

In the pan tilt zoom control apparatus and method according to the present invention, for example, as described above with reference to FIG. 1, a camera equipped with a zoom function and a pan tilter equipped with a pan and tilt function are installed in a dome case. It can be applied to a dome camera or the like.

On the other hand, in the pan & tilter installed in the dome camera, for example, as shown in Fig. 3, the fan motor 10, the tilt motor 11, the motor driver 12, the microcomputer 13 , An interface unit 14, a memory 15, a timer 16, and the like.

In addition, the memory 15 is a non-volatile memory such as, for example, ypyrom or flash memory is used, the pan 15, the zoom tilt pattern information (PTZ Pattern Information) is stored and managed.

In addition, the microcomputer 13 performs a corresponding operation according to a command received from the digital video recorder 200 or an external controller (not shown) connected through the interface unit 14. For example, the command includes a pan start command, a pan stop command, a tilt start command, a tilt stop command, a zoom start command, a zoom Zoom Stop command.

On the other hand, in the microcomputer 13, for example, as shown in FIG. 4, after the fan operation is rotated from 0 degrees to 60 degrees, the microcomputer 13 waits for 1 second and then restarts the fan operation from 60 degrees to 150 degrees. In the case of rotation, the Pan Start Command received at Pan 0 degrees is stored in the 1 byte recording size.

In addition, the microcomputer 13 controls the motor driver 12 to check the time counted by the timer 16 while rotating the camera photographing angle in a clockwise direction at a pan of 0 degrees. do.

In the microcomputer 13, when a fan stop command is received at 60 degrees of fan, the time counted until that time, that is, the fan operation is performed to perform a fan operation from 0 degrees of fan to 60 degrees of fan. In addition to storing the time count in a two byte write size, the pan stop command is stored in a one byte write size.

In addition, the microcomputer 13 checks the time counted by the timer 16 while waiting at the fan 60 degrees, for example, after waiting for 1 second, a fan start command is received. In this case, the standby time corresponding to 1 second is stored in the 2 byte recording size, and the fan start command is stored in the 1 byte recording size.

The microcomputer 13 controls the motor driver 12 to check the time counted by the timer 16 while rotating the camera photographing angle clockwise at 60 degrees. do.

In addition, when the microcomputer 13 receives the fan stop command at 150 degrees, the time counted up to that time, that is, the time required to perform the fan operation from 60 degrees to 150 degrees fan (Time Count). Is stored in the two-byte write size, and the pan stop command is stored in the one-byte write size.

Each command and time required as described above are stored and managed in the memory 15 as the pan tilt zoom pattern information (PTZ Pattern Information).

For example, as described above with reference to FIG. 2, after the fan operation is rotated from 0 degrees to 60 degrees, the fan operation is performed by waiting for 1 second and then rotating the fan operation from 60 degrees to 150 degrees. In this case, if the position information is periodically detected and stored as the pan tilt zoom pattern information, the recording size becomes 22 bytes.

On the other hand, as in the present invention, when the time counted by the pan start and stop commands and the timer is stored as the pan tilt zoom pattern information, since the data is simplified to a 10-byte recording size, a larger number of memory can be stored in a limited capacity. Pan tilt zoom pattern information can be saved and managed.

5 and 6 show an operation flowchart of an embodiment of the method for controlling the pan tilt zoom according to the present invention. For example, in the microcomputer 13, the digital connection connected through the interface unit 14 is performed. When a command is received from the video recorder (DVR) or an external controller (S10), it is determined whether the command is a PTZ pattern recording start command.

As a result of the determination, if the PTZ pattern recording start command is performed (S11), the command is stored in a 1 byte recording size (S12), and a series of PTZ operations corresponding thereto are performed. In operation S13, the timer 16 is counted by controlling the operation of the timer 16.

In addition, in the microcomputer 13, a command is received from a digital video recorder (DVR) or an external controller connected and connected through the interface unit 14 while performing a PTZ operation through the above process. For example, when a stop command for stopping the PTZ operation is received (S14), the time counted by the timer 16 is stored in a 2 byte recording size (S15), and the stop command is stored in a 1 byte recording size. It is stored (S16).

Then, the start command, the stop command, and the time required stored as described above are stored and managed in the memory 15 as PTZ pattern information, and when any command is received thereafter, for example, a PTZ pattern execution start command If is received, the PTZ pattern information stored in the memory is searched and the corresponding operation is performed (S17).

For example, as shown in FIG. 6, in the microcomputer 13, a PTZ pattern execution start command is received from a digital video recorder (DVR) or an external controller connected and connected through the interface unit 14 (S20). ), Or whether the command to stop the PTZ pattern execution is received (S21).

When the PTZ pattern execution start command is received as a result of the monitoring, the PTZ pattern information stored in the memory 15 is searched (S22), and the PTZ operation corresponding to the previously executed PTZ start recording command is started. In this case, the PTZ operation will be executed and stopped for the amount of time previously executed.

In addition, the PTZ stop recording command recorded in the PTZ pattern information is searched to execute a series of PTZ pattern play for stopping the PTZ operation (S23). In the microcomputer 13, the PTZ pattern play as described above is performed. During execution, the time counted by the timer 16 is checked (S24).

When the counted time required matches the time required recorded in the PTZ pattern information (S25), the PTZ operation is stopped, so that the previously executed PTZ operation is performed again using the PTZ pattern information. In addition, since it is possible to store the PTZ pattern information more simply, it is possible to store and manage a larger number of pan tilt zoom pattern information by using a limited memory.

For reference, the pan operation and the tilt operation are performed by the rotation of the pan motor 10 and the tilt motor 11, and the zoom operation moves the zoom lens position of the camera installed in the dome camera, which is widely known. Since it is a well-known technique, a detailed description is omitted.

As mentioned above, preferred embodiments of the present invention described above are disclosed for the purpose of illustration, and those skilled in the art can improve other various embodiments within the spirit and technical scope of the present invention disclosed in the appended claims below. Changes, substitutions or additions will be possible.

1 shows an embodiment of a typical dome camera,

2 illustrates an exemplary embodiment of general pan tilt zoom pattern information.

Figure 3 shows the configuration of an embodiment for a pan tilter applied to the present invention,

4 illustrates an embodiment of pan tilt zoom pattern information according to the present invention;

5 and 6 illustrate an operation flowchart of an embodiment of a pan tilt zoom control method according to the present invention.

[Description of Drawings]

100: dome camera 200: digital video recorder

300: monitor 10: fan motor

11: tilt motor 12: motor driver

13: microcomputer 14: interface unit

15: memory 16: timer

Claims (9)

Performing a pan tilt zoom (PTZ) operation and counting a corresponding command and a time required to store the same as the pan tilt zoom pattern information; And And retrieving the stored pan tilt zoom pattern information and performing a pan tilt zoom operation corresponding to the stored pan tilt zoom pattern information. The method of claim 1, And the first step stores the command and the time required as the tilt zoom pattern information in the pan tilt zoom pattern information recording mode. The method of claim 1, The second step is a pan tilt zoom control method, characterized in that for retrieving the command and the time required recorded in the pan tilt zoom pattern information in the pan tilt zoom pattern information playback mode. The method of claim 1, And at least one command of a 1 byte recording size and a required time of a 2 byte recording size are recorded in the pan tilt zoom pattern information. The method of claim 1, The pan tilt zoom pattern information is stored in the pan tilter in the dome camera, And the command is received from a digital video recorder or an external controller connected and connected through an interface. Storage means for storing a command and time required for performing a pan tilt zoom (PTZ) operation as pan tilt zoom pattern information; And And a control means for retrieving the stored pan tilt zoom pattern information and performing a corresponding pan tilt zoom operation. The method of claim 6, And the storage means is a non-volatile memory in which a command of a 1 byte write size and a time required for a 2 byte write size are stored, where at least one pan tilt zoom pattern information is recorded. The method of claim 6, And the control means retrieves the command and the time required recorded in the pan tilt zoom pattern information in the pan tilt zoom pattern information reproduction mode. The method of claim 6, And the command is received from a digital video recorder or an external controller connected and connected through an interface.

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