KR100750971B1 - Controller for auto charicter generator, closed circuit system including the same and controlling method thereof - Google Patents

Abstract

A controller for an automatic character generator, a closed circuit system comprising the same, and a method for controlling the controller are provided to facilitate input of characters, change of a photographing angle, and upgrade of a program. A first interface(231) is connected to a user terminal device(220). An operation setting unit(234) selects at least one of plural automatic character generators. A central processing unit is connected to the first interface(231) to supply a signal supplied from the outside to at least one automatic character generator selected among the plurality of automatic character generators. A second interface(232) connects the plural automatic character generators and the central processing unit.

Description

CONTROLLER FOR AUTO CHARICTER GENERATOR, CLOSED CIRCUIT SYSTEM INCLUDING THE SAME AND CONTROLLING METHOD THEREOF}

1 is a block diagram schematically showing a CCTV system according to an embodiment of the present invention.

2 is a view showing that the automatic character generator and the automatic character generator controller installed in the server unit of the CCTV system shown in Figure 1 is inserted into the rack.

3 is a block diagram illustrating in detail the automatic character generator control unit of the CCTV system shown in FIG.

Figure 4 is a block diagram showing in detail the automatic character generator of the CCTV system shown in Figures 1 and 2.

5 is a flowchart sequentially illustrating a method for controlling a CCTV system according to an exemplary embodiment of the present invention.

<Brief Description of Drawings>

10: imaging unit 20: server unit

30: rack 110: camera unit

210: display device 220: user terminal

230: automatic character generator control unit 231: first interface

232: second interface 233: CPU1

234: operation setting unit 237: first external input terminal

240: automatic character generator 241: signal transmission and reception unit

242: signal separation unit 243: status display unit

244: character generator 245: CPU2

246: memory 247: second external input terminal

250: power supply

The present invention relates to an automatic character generator control unit, a closed circuit system including the same, and a control method thereof, and in particular, an automatic character generator control unit for allowing a user to easily input text to a plurality of automatic character generators, and a closed circuit including the same. It relates to a system and a control method thereof.

In general, a closed circuit television (CCTV) surveillance system is a system for supplying a video signal captured by a surveillance camera to a specific user through wired or wireless. These CCTV surveillance systems are installed at intersections of highways, local roads or downtowns to monitor traffic conditions, or to be installed in general homes to protect the privacy of individuals. It is installed in the place where crime occurs a lot to prevent the transmission of information to the user.

In particular, the CCTV system used for road traffic conditions displays the image and data information transmitted from the camera on a display device such as a monitor or TV. At this time, information such as a photographing direction, a weather condition, and the like in which the camera photographs data information is digitally converted and transmitted. Here, the information on the photographing direction that the camera is photographing is later converted into text on the user side and displayed simultaneously when an image is displayed on the display device. To this end, the user stores separate data so that the information of the shooting direction can be predicted in a separate device attached to the camera. However, the conventional CCTV system has a problem that takes a lot of time and money because the user must move to a separate device attached to the camera to store data through a communication means such as USB.

Accordingly, an aspect of the present invention is to provide an automatic character generator control unit for allowing a user to easily input text into a plurality of automatic character generators, a closed circuit system including the same, and a control method thereof.

In order to solve the technical problem to be achieved by the present invention, the present invention comprises a first interface connected to the user terminal; An operation setting unit controlling to select at least one of the plurality of automatic character generators; A central processing unit connected to the first interface to supply a signal supplied from the outside to at least one automatic character generator selected from the plurality of automatic character generators; And a second interface connecting the plurality of automatic character generators and the central processing unit.

Here, the user terminal and the first interface is characterized in that connected via a local area network (LAN).

And an external input terminal for supplying a signal from the outside to any one of the central processing unit and the operation setting unit.

In addition, the technical problem to be achieved by the present invention is to capture an image to capture the image and the imaging direction information signal mixed with the transmission unit; A plurality of automatic character generators for receiving a video signal and a shooting direction information signal transmitted from the imaging unit, separating the video and the shooting direction information signal, and converting the shooting direction information signal into a character; An automatic character generator control unit for selecting at least one automatic character generator of the plurality of automatic character generators and supplying a text signal to be displayed on the selected automatic character generator; A display device for displaying the video signal and text supplied from the automatic character generator; And a server unit having a user terminal connected to the automatic character generator control unit and a local area network (LAN).

Here, the automatic character generating device control unit includes a first interface connected with the user terminal; An operation setting unit controlling to select at least one of the plurality of automatic character generators; A first central processing unit connected to the first interface to supply the signal supplied from the user terminal to at least one automatic character generator selected from the plurality of automatic character generators; And a second interface connecting the plurality of automatic character generators and the first central processing unit.

The apparatus may further include an external input terminal configured to supply a signal from an external source to any one of the first central processing unit and the operation setting unit.

The automatic character generator may further include: a signal separator for separating an image signal and a photographing direction information signal supplied from the imaging unit; A memory for storing character information supplied from the user terminal; A character generation unit for converting the photographing direction information signal separated by the signal separation unit into characters to be displayed on the display device by matching the character information stored in the memory; And a second central processing unit mixing the video signal separated by the signal separator and the text signal generated by the text generator.

In this case, each of the plurality of automatic character generators may further include a status display unit for displaying its operation status.

In addition, the status display unit is characterized in that formed with at least one light emitting diode.

In this case, the second central processing unit supplies a signal displayed on the status display unit when a signal is supplied from the user terminal.

The second central processing unit may control a position where the text signal is displayed on the display device.

And in order to solve the above technical problem, the present invention comprises the steps of inputting a character through a user terminal; Selecting an automatic character generator in which a character is to be stored among the plurality of automatic character generators; Transmitting a text to the selected automatic text generator; Storing characters in a memory of the selected automatic character generator; Controlling a character display position to display the memory stored character of the selected automatic character generator at an arbitrary position of a display device; And converting an image and a text signal transmitted from an image capturing unit to display a character stored in the image and a memory on the display device.

Here, the step of supplying a command signal for determining the photographing direction of the camera of the imaging unit through the user terminal; Selecting an automatic character generator to which a command signal for determining the photographing direction is supplied; The method may further include supplying a command signal for determining the photographing direction to a corresponding imaging unit through a signal transmitter / receiver of the selected automatic character generator.

Other objects and advantages of the present invention in addition to the above object will be apparent from the description of the preferred embodiment of the present invention with reference to the accompanying drawings.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Here, an embodiment of the present invention described below will be described by way of example for a traffic information CCTV system for monitoring the road traffic situation for convenience of description.

1 is a block diagram schematically showing a CCTV system according to an embodiment of the present invention.

Referring to FIG. 1, an image capturing unit 10 which captures an image and mixes and transmits an image and a photographing direction information signal and receives an image signal and a photographing direction information signal transmitted from the image capturing unit 10 receives the image and photographing direction information. A plurality of automatic character generators 240 for separating a signal and converting a photographing direction information signal into characters, an automatic character generator controller 230 for controlling each of the plurality of automatic character generators 240, and displaying images and characters The server unit 20 includes a display device 210, an automatic character generator control unit 230, and a user terminal 220 connected through a local area network (hereinafter, referred to as a “LAN”).

In detail, the image capturing unit 10 includes a camera unit 110 having a camera for capturing an image and a pan tilt for changing a photographing direction of the camera. At this time, the camera unit 110 transmits the mixed video signal and the shooting direction signal to the server unit 20.

The camera unit 110 includes a camera for capturing an image and a pan tilt for rotating the camera according to the photographing direction. Here, the camera is a device for taking an image, and is installed in the highway, the intersection of the city center, inside and outside the building according to the purpose. In this case, it is installed in a highway or an intersection in the city center for the purpose of traffic information. The camera photographs traffic information and supplies the photographed video signal to the server unit 20. The pan tilt is equipped with a camera, and rotates the camera up, down, left, and right by a command signal received from the server unit 20. The pan tilt may be stored in the storage means through a look-up table in which angle and voltage signal information corresponding to the photographing direction of the camera are prepared in advance. In the lookup table, angle-to-voltage signals are mapped and stored, and a digital conversion is performed after outputting a photographing direction in the form of voltage while an image is supplied. For example, a voltage of 0V is set at 0 °, a voltage of 2.5V at 180 °, and a voltage of 5V at 350 °, and then digitally converted and supplied to the server unit 20. Here, the camera unit 110 couples a text signal and a video signal converted into a digital signal of several bits to a vertical blanking interval (hereinafter referred to as 'VBI') signal. Here, the VBI has an empty space in which no data is loaded between each frame of the video signal of 30 frames per second, which is called VBI, and can send data information to the VBI. In the present invention, digital data is inserted and transmitted in 10 to 15 sectors among unused sectors of the VBI. Accordingly, the digitally converted camera photographing direction information signal and the image signal do not affect each other, so that noise is not generated in the later image signal.

On the other hand, when the imaging unit 10 transmits a command signal instructing to change the photographing direction of the camera from the user terminal 220 of the server unit 20, the image pickup unit 10 receives signals of the photographing direction currently photographed by the camera and the indicated photographing direction. The rotation signal is transmitted to the pan tilt for comparison. The rotation signal transmitted to the pan tilt drives the motor provided inside the pan tilt by a controller included in the pan tilt to change the rotation direction of the camera. In addition, the pan tilt may be transmitted by transmitting a signal specifying the camera shooting direction up and down to the pan tilt, or the camera may be controlled by transmitting a zoom in or zoom out signal of the camera.

On the other hand, when using a Doom camera or the like, the camera unit 110 divides the photographing direction of the camera into N (N is a natural number) sectors, and the sector value is a digitally converted data signal. It is supplied to the server unit 20 together.

The server unit 20 receives a video signal and a shooting direction information signal transmitted from the imaging unit 10, separates the image and the shooting direction information signal, and converts the shooting direction information signal into a plurality of automatic character generators 240. ), An automatic character generator controller 230 for controlling each of the plurality of automatic character generators 240, a display device 210 for displaying images and characters, and a LAN (Local Area) connected to the automatic character generator controller 230. Network (hereinafter referred to as "LAN") is provided with a user terminal 220. Here, the automatic character generator 240 is manufactured in the form of a card and is inserted into the rack 30 in sequence as shown in FIG. 2.

2 is a view showing that the automatic character generator and the automatic character generator controller installed in the server of the CCTV system shown in Figure 1 is manufactured in the form of a card inserted into the rack.

As shown in Figure 2, a plurality of automatic character generator 240 is inserted into any one slot formed in the rack (30). In addition, the automatic character generator control unit 230 is also manufactured in the form of a card is inserted into any one slot of the rack (30). Here, the rack 30 includes at least one power supply unit 250 for supplying a power signal to each of the automatic character generator 240 and the automatic character generator controller 230. 2 shows the front of the rack 30, the rear of each automatic character generator 240 is connected by the automatic character generator control unit 230 and communication lines such as cables, automatic character generator ( 240, the automatic character generator control unit 230 and the power supply unit 250 are connected to the power line. In addition, each automatic character generator 240 is connected to at least one display device 210 through a communication line, and supplies an image signal and a text signal to the display device 210. Here, the communication line may use any one of an optical cable or a coaxial cable.

Detailed descriptions of the automatic character generator 230 and the automatic character generator 240 will be described with reference to FIGS. 3 and 4.

3 is a block diagram illustrating in detail the automatic character generator control unit of the CCTV system shown in FIG.

Referring to FIG. 3, the automatic character generator control unit 230 is the first character interface 231 connected to the user terminal 220 through a LAN, and the automatic character generator 240 through signals supplied from the user terminal 220. CPU (Central Processing Unit) (hereinafter referred to as "CPU") 1 (233) for supplying a signal, second interface 232, a plurality of automatic character generator 240 and the CPU 1 233, a plurality An operation setting unit 234 for controlling to select at least one of the automatic character generator 240 of the.

The first interface 231 is connected to the user terminal 220, and in particular, connected to the LAN. In this case, the first interface 231 may change the data signals transmitted from the user terminal 220 to TCP / IP into a data communication protocol inside the automatic character generator control unit 230.

The second interface 232 is connected to the plurality of automatic character generators 240. Here, the second interface 232 uses a LTC491 or a chipset having the same function to transmit serial data signals in a signal form defined by a plurality of automatic character generators 240 and RS-322 or RS-422 protocols. do.

The CPU1 233 transmits a signal from the user terminal 220, for example, a transmitted text signal or a signal such as a camera rotation angle change signal or a program of the image capturing unit 10 to the second of the automatic character generator controller 230. The automatic character generator 240 is supplied through the interface 232. At this time, the CPU1 233 assigns an address to each of the transmitted text signal or the signals of the camera rotation angle change signal of the imaging unit 10 and the program, respectively, and sends the addressed signal to the automatic text generator 240. To supply.

In addition, when the signal supplied from the user terminal 220, for example, a signal for controlling the character display position is input, the CPU1 233 controls the position when the character is displayed on the display device 210 through this signal. can do.

The operation setting unit 234 selects the automatic character generator 240 to which signals such as a text signal, a camera rotation angle change signal, and a program are input, from among the plurality of automatic character generators 240. To this end, the operation setting unit 234 uses a switching element such as a dual inline package (DIP) switch according to the address of the automatic character generator 240 inserted into the rack 30. Automatic character generator 240 to select. In other words, an address signal corresponding to the address of the automatic character generator 240 inserted into the rack 30 is supplied to the DIP switch to select the automatic character generator 240. The operation setting unit 234 supplies the selected signal to the CPU1 233 to supply one of a signal such as a text signal, a camera rotation angle change signal, a program, and the like to the corresponding automatic character generator 240.

Meanwhile, the automatic character generator control unit 230 according to an embodiment of the present invention may further include a first external input terminal 237.

Specifically, when the first external input terminal 237 is connected between the automatic character generator control unit 230 and the user terminal 220 through a LAN, a failure of a LAN and a disconnection of a line or a failure of the user terminal 220 are performed. It is further provided in preparation. The first external input terminal 237 is connected through a communication means such as a LAN or a USB, and may supply a signal such as a character and a program.

In addition, the first external input terminal 237 may be directly connected to the operation setting unit 234 to allow the automatic character generator 230 to manually select the automatic character generator 240.

Figure 4 is a block diagram showing in detail the automatic character generator of the CCTV system shown in Figures 1 and 2.

Referring to FIG. 4, the automatic character generator 240 receives a VBI signal supplied from the imaging unit 10, and transmits and receives a signal for changing a photographing direction of the camera of the imaging unit 10. ), A signal separator 242 for separating the received video signal and a digital signal, a character generator 244 for converting a digital signal into a character in the signal separator 242, and a video signal separated in the signal separator 242. And the state display unit 243 for displaying the communication status of the CPU2 245 and the automatic character generator 240 for mixing the characters generated by the character generator 244 and synchronizing the two signals to the display device 210. And a memory 246 that stores characters input from the user terminal 220 in the form of data.

Specifically, the signal transmission / reception unit 241 receives the VBI signal supplied from the imaging unit 10, and transmits a rotation angle change signal of the camera of the imaging unit 10 to the imaging unit 10.

The signal separator 242 separates each of the video signal and the digital signal from the VBI signal input to the signal transmitter / receiver 241 and transmits the separated video signal to the CPU2 245, and the digital signal is the character generator 244. ).

The character generator 244 converts the digital signal into a character signal. At this time, the character generator 244 matches the character data signal stored in the memory 246 with the input digital signal and supplies the character signal stored in the memory 246 to the CPU2 245.

The memory 246 stores the character information input from the user terminal 220 and supplies the stored data to the character generator 244 when a digital signal is input to the character generator 244.

The status display unit 243 is formed of a plurality of light emitting diodes 243. For example, the first light emitting diode 243a indicates while the text signal is being stored in the memory 246. The second light emitting diode 243b indicates a state in which a signal is received from the image capturing unit 10. The third light emitting diode 243c displays a state in which the command signal is supplied to the imaging unit 10. In addition, a light emitting diode for detecting a malfunction of the automatic character generator 240 may be further formed. The status display unit 243 may be supplied with a signal to display the status through the CPU2 245 included in the automatic character generator 240 or the CPU1 233 of the automatic character generator 230.

In addition to the light emitting diodes 243, the status display unit 243 may use a display device such as a liquid crystal display (LCD), a flexible numeric display (FND), or the like.

The CPU 2 245 processes the image signal transmitted from the signal separator 242 and the text signal transmitted from the automatic character generator 240 to process the signal and transmits the same to the display device 210. In addition, the CPU2 245 supplies the text signal supplied from the automatic character generator control unit 230 to the memory 246. In addition, the CPU2 245 may directly supply a signal to the status display unit 243 displaying a status while the text signal is supplied from the automatic character generator control unit 230.

For example, when monitoring a road traffic situation, the CPU2 245 may analyze the input video signal to calculate a vehicle traffic volume in a road section in which the camera unit 110 is installed in real time and display it on the display device 210. have. In addition, the CPU2 245 may check the weather state by analyzing the video signal where the camera unit 110 is installed. In other words, by analyzing the image signal input to the CPU2 (245) it is possible to check the weather conditions such as sunny, cloudy, snow, rain. Accordingly, the sensor installation cost can be reduced because it is not necessary to separately install sensors for checking the weather state in the camera unit 110.

In addition, the automatic character generator 240 may further include a second external input terminal 247.

In detail, the second external input terminal 247 may be connected through a communication means such as LAN or USB, and may supply a signal such as a character or a program.

The display device 210 displays an image signal and a text signal transmitted from the CPU 2 245 of the automatic character generator 240 on the image. The display device 210 may display an image signal from one automatic character generator 240 or may divide and display image signals transmitted from the plurality of automatic character generators 240.

The user terminal 220 transmits a command signal to the automatic character generator control unit 230 to change the photographing direction as necessary while the user is observing the display device 210. In addition, the user terminal 220 stores the character to be displayed on the display device 210 in the memory 246 included in the automatic character generator 240 through the automatic character generator controller 230. In this case, the user terminal 220 is connected to the automatic character generator control unit 230 through the first interface 231. Therefore, since the user terminal 220 and the automatic character generator control unit 230 are connected via a LAN, data transmission is possible through a TCP / IP communication protocol, and the user can remotely store characters in the automatic character generator 240. Can be. In addition, the user terminal 220 may transmit a program for operating the automatic character generator control unit 230. For example, the display device 210 may be supplied later by supplying a program for controlling a user to set the position at which the text is displayed on the display device 210 to the automatic text generator 240 through the automatic text generator control unit 230. ), The character display position is controlled when images and characters are displayed.

5 is a flowchart sequentially illustrating a method for controlling a CCTV system according to an exemplary embodiment of the present invention.

Referring to Figure 5, the control method of the CCTV system according to an embodiment of the present invention is a character input step (S10), a step of selecting an automatic character generator to be stored of the character among the plurality of automatic character generators (S20), Sending a character to the selected automatic character generator (S30), the step of storing the character in the memory of the selected automatic character generator (S40), the character display position control step 50 and the image and the character stored in the display device And displaying step S60.

In detail, in the character input step S10, the user inputs arbitrary characters to the user terminal 220. Here, the user terminal 220 may use a separate program for text input or use a text input program included in the operating system of the user terminal 220, for example, a program such as a window paint.

A user may include inputting a command signal for changing the photographing direction to an image capturing unit 10. In other words, a command signal for controlling the user to change the direction of the camera by changing the camera direction of the imaging unit 10 may be supplied to the imaging unit 10.

Next, the step (S20) of selecting the automatic character generator to store the character among the plurality of automatic character generators in the operation setting unit 234 provided in the automatic character generator controller 230 to store the automatic character The generator 240 is selected. In this case, one or all of the selected automatic character generator 240 may be selected. In particular, when storing programs for operating the automatic character generator 240, the operation setting unit 234 selects all the automatic character generators 240 so that the programs to be supplied from the user terminal 220 are automatically generated by the automatic character generator ( 240). Here, the operation setting unit 234 may be selected according to the address of the automatic character generator 240 inserted into the rack 30 using a switching element such as a DIP switch. In other words, the automatic character generator 240 is selected by supplying an address signal corresponding to the address of the automatic character generator 240 inserted into the rack 30 to the DIP switch.

In addition, when a user inputs a command signal for changing the photographing direction to an image capturing unit 10, the operation setting unit 234 selects an automatic character generator 240 connected to the image capturing unit 10 to receive a command signal. Allow to transmit.

Next, the step (S30) of transmitting a character to the selected automatic character generator is performed among the data received from the user terminal 220 to transmit the character to the automatic character generator 240 selected by the operation setting unit 234. The text signal is extracted from the CPU1 233 and supplied to the automatic character generator 240 connected through the second interface 232.

When a command signal for changing the photographing direction of an image capturing unit 10 is input from the user terminal 220, the CPU1 233 extracts a signal other than a text signal and selects the selected auto text connected through the second interface 232. It is supplied to the generator 240.

Next, in step S40, in which the character is stored in the memory of the selected automatic character generator, the character signal input through the second interface 232 is transmitted from the CPU2 245 to the memory 246. At this time, the CPU2 245 may assign an address to be stored in the memory 246. That is, since the memory 246 is sequentially stored in a space to be stored for each address of the transmitted character signal, the memory 246 is stored in the memory 246 after the CPU2 245 assigns an address.

When the command signal for changing the photographing direction is supplied, the CPU2 245 transmits a signal to the imaging unit 10 through the signal transmission / reception unit 241 and supplies the signal to the imaging unit 10.

At this time, the imaging unit 10 rotates the camera according to the shooting direction change signal.

Next, the character display position control step (S50) allows the user to control the position of the character to be displayed on the display device 210 in the automatic character generator control unit 240. For example, when the traffic volume and average speed of the vehicle are displayed on the display device 210 as the data analyzed through the video signal, the traffic volume is displayed on the upper left of the display device, and the average speed is controlled to be displayed on the upper right.

Meanwhile, the character display position control step S50 may also be controlled by the automatic character generator 240 through a user signal. When the user designates the character display position through the user terminal 220, the CPU 2 245 included in the automatic character generator 240 may automatically display the character at the position designated by the user.

Next, the step of displaying the image and the stored character on the display device (S60) is to separate the VBI signal input from the image pickup unit 10 into an image and data signal, the separated image signal is transmitted to the CPU2 (245), The data signal including the digitally converted camera photographing direction information is transmitted to the character generator 244. The display device 210 matches the text information stored in the memory 246 and supplies the text to the display device 210 to display the text while the corresponding video is displayed. The display device 210 combines the video signal and the text signal so that the text signal is displayed at a designated position among the display units of the display device 210 while the video signal is displayed.

Automatic character generator control unit according to the present invention, a closed circuit system and a control method thereof comprising an automatic character generator control unit for selectively inputting a character to a plurality of automatic character generators, or supplying a command signal or program Users can easily input text, change the imaging angle, and upgrade the program. In this case, the automatic character generator may be controlled even from a long distance by connecting the automatic character generator controller and the user terminal through a local area network (LAN).

In the detailed description of the present invention described above with reference to the preferred embodiment of the present invention, those skilled in the art or those skilled in the art having ordinary knowledge of the present invention described in the claims to be described later It will be understood that various modifications and variations can be made in the present invention without departing from the spirit and scope of the art.

Claims (13)

A first interface connected with the user terminal; An operation setting unit controlling to select at least one of the plurality of automatic character generators; A central processing unit connected to the first interface to supply a signal supplied from the outside to at least one automatic character generator selected from the plurality of automatic character generators; And And a second interface connecting the plurality of automatic character generators and the central processing unit. The method of claim 1, And the user terminal and the first interface are connected to a local area network (LAN). The method of claim 2, And an external input terminal for supplying a signal from the outside to any one of the central processing unit and the operation setting unit. An imaging unit which captures an image and transmits a mixed image and a direction information signal; A plurality of automatic character generators for receiving a video signal and a shooting direction information signal transmitted from the imaging unit, separating the video and the shooting direction information signal, and converting the shooting direction information signal into a character; An automatic character generator control unit for selecting at least one automatic character generator of the plurality of automatic character generators and supplying a text signal to be displayed on the selected automatic character generator; A display device for displaying the video signal and text supplied from the automatic character generator; And A closed circuit system including a server unit having a user terminal connected to the automatic character generator control unit and a local area network (LAN). The method of claim 4, wherein The automatic character generator control unit A first interface connected with the user terminal; An operation setting unit controlling to select at least one of the plurality of automatic character generators; A first central processing unit connected to the first interface to supply the signal supplied from the user terminal to at least one automatic character generator selected from the plurality of automatic character generators; And And a second interface connecting the plurality of automatic character generators and the first central processing unit. The method of claim 5, And an external input terminal for supplying a signal from an external source to any one of the first central processing unit and the operation setting unit. The method of claim 6, The automatic character generating device may further include: a signal separator for separating an image signal and a photographing direction information signal supplied from the imaging unit; A memory for storing character information supplied from the user terminal; A character generation unit for converting the photographing direction information signal separated by the signal separation unit into characters to be displayed on the display device by matching the character information stored in the memory; And a second central processing unit configured to mix the video signal separated by the signal separator and the text signal generated by the text generator. The method of claim 7, wherein Each of the plurality of automatic character generators further includes a status display unit for displaying its operation state. The method of claim 8, The state display unit is a closed circuit system, characterized in that formed of any one of at least one light emitting diode, a liquid crystal display device and a variable number display device. The method of claim 9, And the second central processing unit supplies a signal displayed on the status display unit when a signal is supplied from the user terminal. The method of claim 10, And said second central processing unit controls the position at which said text signal is displayed on said display device. Inputting characters through a user terminal; Selecting an automatic character generator in which a character is to be stored among the plurality of automatic character generators; Transmitting a text to the selected automatic text generator; Storing characters in a memory of the selected automatic character generator; Controlling a character display position to display the memory stored character of the selected automatic character generator at an arbitrary position of a display device; And And converting an image and a text signal transmitted from an image capturing unit to display the characters stored in the image and the memory on the display device. delete

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