KR100722466B1 - Mobile communication terminal having an image call function using an overlay buffer and controlling method therefore - Google Patents

Abstract

According to the present invention, when an image synthesis setting signal is input to a mobile communication terminal, an image signal storage step of storing a video signal currently captured by a terminal camera in an overlay buffer, and user information to be synthesized after the image signal storage step is selected by a user. A user-specified image storage step of receiving input according to an input and storing it in an overlay buffer, and after synthesizing the captured image signal stored in the overlay buffer with the image signal input by the user for overlay after the user-specified image storing step, compresses a designated destination. The present invention provides a mobile communication terminal system equipped with a video call function using an overlay buffer comprising a video synthesis step transmitted to a terminal, and a control method thereof.

As described above, the present invention overlays the information designated by the terminal user on the image captured by the camera in the video call, and then synthesizes and transmits the information to the opposite terminal to synthesize various information intended by the terminal user on the screen captured by the camera. Therefore, the convenience of the terminal is maximized accordingly.

Overlay, compositing, custom information, overlay buffer, video codec section

Description

Mobile communication terminal system with video call function using overlay buffer and its control method

1 is an explanatory diagram illustrating a conventional video call terminal.

2 is an explanatory diagram illustrating a mobile communication terminal equipped with a video call function using the overlay buffer of the present invention.

3 is a flowchart of the present invention.

4A is an explanatory diagram illustrating overlay composition of the present invention.

<Detailed Description of Codes>

1: Mobile communication terminal 2: Camera

3: control module part 4: overlay buffer

5 memory unit 6 video codec unit

7: display unit 8: handset phone

9: codec section 10: key panel section

11: external input device section 12: base station system section

13: terminal

The present invention relates to a mobile communication terminal system having a video call function using an overlay buffer and a method of controlling the same. In particular, the terminal user overlays the information specified by the user on the image captured by the camera and transmits the synthesized information to the other terminal. The present invention relates to a mobile communication terminal system having a video call function using an overlay buffer and a control method thereof.

In general, wireless data communication refers to a communication function of wirelessly transmitting and receiving various data such as letters, numbers, and images through a base station system using a portable terminal capable of wireless transmission and reception. That is, cellular phones, portable computers, PDAs. It is a mobile communication system that exchanges or retrieves data in both directions while moving by using various terminals such as IMT-2000. In particular, the mobile communication system divides the service area into hexagonal cells of several km to several ten kilometers in North America in the early 1980s, and uses the same frequency channel repeatedly in the geographically separated cells. The rapid growth of the cellular-phone mobile communication system that implements the radio channel switching function between the cells in accordance with the movement of.

In recent years, a third generation mobile communication system called IMT-2000 has been developed and used, and this system can be used for various communication services supported by fixed communication networks such as PSTN / ISDN / B-ISDN according to the needs of mobile users. It is a mobile communication system that enables access to an information service network including voice and video data using a wireless link.

Then, referring to FIG. 1, a mobile communication system capable of making a conventional video call as described above, an image captured by a camera 69 mounted on a part of a body after transmitting an outgoing signal or receiving an incoming call while moving is shown. The video call terminals 70 and 71 which perform voice calls while transmitting and receiving each other and the call signals transmitted wirelessly from the video call terminals 70 and 71 or receive incoming calls requested from external systems. And a base station 72 for processing channel information and terminals 70 and 71 in the sector through the paging channel.

Meanwhile, referring to the operation of the conventional mobile communication terminal system as described above, first, when power is applied to the terminal 70, the terminal 70 proceeds to an initial state and loads necessary information into the internal memory and reads each parameter. In addition, the terminal 70 executes an initialization process, receives information necessary for the system including time information through a pilot channel and a sync channel transmitted from the base station 72, and proceeds to the standby state, and displays the result screen on the LCD. It displays on the panel 73. At this time, the terminal 70 maintains a state capable of receiving a system parameter or a proper response to various messages such as a call through the sink channel in the standby state.

In this case, when the user of the terminal 70 performs a single operation such as a telephone call, first, the system is connected to the base station 72 through the access channel, and then the image signal and the outgoing signal information captured by the camera 69 are received. Transfer and display the result of that single operation on the LCD panel (73).

Then, the base station 72 processes the information signal transmitted from the terminal 70 and transmits it to the corresponding destination terminal 71. Then, the terminal 71 processes the image information received from the base station 72 and emits the ringtone according to the result.

At this time, when the user of the terminal 71 listens to the emitted ringtone and opens a folder or flip, the call is connected to the counterpart terminal 70 and the video signal transmitted from the counterpart terminal is displayed on the LCD panel 74. Make a video call.

Here, when the video communication is terminated, the base station 72 releases the communication by transmitting a communication release message to the originating and receiving terminal 71. Then, both the transmitting and receiving terminals 70 and 71 are returned to the initialization state.

However, since the conventional video call terminal transmits only the image signal captured by the camera, additionally, the user cannot insert image information, phrases, or texts desired by the user, thereby greatly reducing the usability of the terminal. In addition, since the terminal is not provided with a means for editing the captured video signal as the terminal user intends, various image editing cannot be performed using the terminal, thereby reducing the functionality of the terminal.

Accordingly, the present invention has been invented to solve the above-mentioned problems, and the present invention synthesizes and transmits various information intended by the terminal user to a screen imaged by the terminal camera, and accordingly, provides an overlay buffer that maximizes the convenience of the terminal. An object of the present invention is to provide a mobile communication terminal system having a video call function and a control method thereof.

In addition, another object of the present invention is to edit and process the image to be transmitted using the overlay buffer without adding a separate complicated circuit to the terminal, accordingly the video call function using the overlay buffer that significantly improves the design quality of the terminal accordingly The present invention provides a mobile communication terminal system and a control method thereof.

According to an aspect of the present invention, a mobile communication terminal for performing a video call using an image captured by a camera includes overlay overlay processing of image signals captured by the camera and display information designated by a user. A control module unit, an overlay buffer for storing and synthesizing image information captured by a camera according to a function control signal of the control module unit and information designated by a user, and a basic for overlay synthesis according to a function control signal of the control module unit. A memory unit for storing information, a video codec unit for compressing the image signal synthesized by overlay according to the codec control signal of the control module unit, and transmitting the compressed image signal through the control module unit, and synthesizing it in an overlay buffer according to the function control signal of the control module unit An overlay buffer including a display unit for displaying the video signal to the outside It provides image yonghan the call function is provided with a mobile communication terminal system.

According to still another aspect of the present invention, when an image synthesis setting signal is input to a mobile communication terminal, an image signal storing step of storing an image signal currently captured by a terminal camera in an overlay buffer, and user information desired for synthesis after the image signal storing step is performed. A user-specified image storage step of receiving the input according to a user's selection input and storing the same in the overlay buffer, and synthesizing the image signal stored in the overlay buffer after the user-specified image storage step and the image signal inputted by the user for overlay A control method of a mobile communication terminal system having a video call function using an overlay buffer comprising a video synthesis step of compressing and transmitting the image to a designated destination terminal is provided.

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

As shown in FIG. 3, the present invention includes a camera 2 installed at one side of the mobile communication terminal 1 for capturing a subject located at an angle set by a user, and an image signal captured by the camera 2. A control module unit 3 for overlay composition processing of display information designated by a user and a radio call signal of a mobile communication terminal 1, and a camera 2 according to a function control signal of the control module unit 3; Overlay buffer 4 for storing and synthesizing the image information captured by the user and information designated by the user, and basic information for overlay composition according to the function control signal of the control module unit 3. In addition to storing graphics and the like, the memory unit 5 stores various data processed by the mobile communication terminal 1, and compresses and controls the video signal synthesized by overlay according to the codec control signal of the control module unit 3. Module part (3) The video codec unit 6 transmitted through the control unit and the display unit 7 for displaying the video signal synthesized in the overlay buffer 4 according to the function control signal of the control module unit 3 to the outside.

The control module unit 3 converts an analog voice signal input through the handset 8 into a digital signal or converts a digital voice signal into an analog signal according to the call connection control signal of the control module unit 3. A codec unit 9 for converting and outputting the key panel unit 10 for inputting a function setting signal of the user to the control module unit 3 is connected.

In this case, the control module unit 3 is connected to an input device unit 11 capable of inputting an image signal from the outside for overlay synthesis. In addition, the control module unit 3 processes an image selection signal of a user input by the touch screen method on the display unit 7.

Next, a control method applied to the above apparatus will be described.

As shown in FIG. 3, the method of the present invention proceeds from the initial state S1 to the image synthesis setting step S2 and checks whether an image synthesis setting signal is input to the current terminal. At this time, when the video synthesis setting signal is not input to the current terminal as a result of checking during the video synthesis setting step (S2), the process proceeds to the general call step (S3) to execute a video call in a normal manner.

That is, when executing a video call using the terminal 1 of the present invention, the control module unit 3 first establishes a communication channel with the base station system unit 12 when the user opens a folder, for example, and then the terminal 1 An object located at an imaging angle is captured by the camera 2 located in a part of the body and stored in the overlay buffer 4 and displayed on the display unit 7.

At this time, the control module unit 3 compresses the image information stored in the overlay buffer 4 through the video codec unit 6 and the audio signal input through the handset phone 8 is the codec unit 9 After compression, the user puts them on the phone number information inputted through the key panel unit 10 and transmits them to the counterpart terminal 13 via the base station system unit 12.

Accordingly, the counterpart terminal 13 displays an image signal transmitted from the terminal 1 on the display 14 as shown in FIG. (1) to make a video call of the call.

On the other hand, when the image synthesis setting signal is input to the current terminal as a result of checking during the image synthesis setting step (S2), the process proceeds to the image capture signal storage step (S4) to store the image signal captured by the current terminal camera in the overlay buffer. After the image capture signal storage step S4, the user-specified image storage step S5 is performed to receive user information desired to be synthesized according to a user's selection input and store it in an overlay buffer.

Here, the user-specified image storing step S5 further includes an external image storing step of storing image information input by the user through an external input device.

In addition, after the user-specified image storage step (S5) to proceed to the image synthesis step (S6) synthesized the image signal stored in the overlay buffer and the image signal input by the user for overlay, and then compressed and transmitted to the designated destination terminal Let's do it.

In other words, when the user of the terminal 1 receives an image synthesis setting signal through the key panel unit 10, the control module unit 3 overlays the image signal currently captured by the terminal camera 2 with the overlay buffer 4. In addition to being stored in the display, it is displayed on the display unit 7. In addition, the control module unit 3 receives user information desired for synthesis, for example, a phrase, a display, and text information defined by the user according to a user's selection input, and stores the user information in the overlay buffer 4. Select the image information for synthesis stored in the memory unit 5 by the key panel unit or the touch screen method and store the image information in the overlay buffer 4 or input information desired for synthesis from the outside through the external input device unit 11. Stored in the overlay buffer 4.

Meanwhile, as shown in (bc) of FIG. 4, the control module unit 3 synthesizes the captured image signal stored in the overlay buffer 4 and the image signal input by the user for overlay, and then the video codec unit ( 6) it is compressed and transmitted to the designated destination terminal 13 via the base station system unit 12.

As described above, the present invention synthesizes various information intended by the terminal user on the screen captured by the camera by overlaying and synthesizing the information designated by the terminal user on the image captured by the camera during the video call and then transmitting the synthesized information to the opposite terminal. Since the transmission is to have the advantage of maximizing the ease of use of the terminal accordingly.

In addition, according to the present invention, since the image to be transmitted is edited and processed using the overlay buffer without adding a complicated circuit to the terminal, the design quality of the terminal is also significantly improved.

Claims (5)

In the mobile communication terminal for making a video call using the image captured by the camera, An input device unit capable of inputting an image signal from an external source for overlay synthesis is connected to overlay one of an image signal captured by the camera, an input image signal of the input device unit, and display information stored in a memory designated by a user. A control module unit for synthesizing, an overlay buffer for storing and synthesizing image information captured by a camera according to a function control signal of the control module unit and information designated by a user, and an overlay synthesis according to a function control signal of the control module unit Memory unit for storing the basic information for the video, Video codec unit for compressing the video signal synthesized by the overlay according to the codec control signal of the control module unit and transmits through the control module unit, Overlay according to the function control signal of the control module unit Display unit for displaying the video signal synthesized in the buffer to the outside Using the overlay buffer comprises video calls for the mobile communication terminal system comprising a. delete The mobile communication terminal system according to claim 1, wherein the control module unit processes an image selection signal of a user input by a touch screen method on a display unit. When the image synthesis setting signal is input to the mobile communication terminal, the image signal storing step of storing the image signal currently captured by the camera of the terminal in an overlay buffer, and memory storage user information or user input desired to be synthesized after the image signal storing step A user-specified image storage step of receiving any one of the image information input through the device according to the user's selection input, and overlaying the captured image signal stored in the overlay buffer and the user after the user-specified image storage step And a video synthesizing step of synthesizing the video signal inputted for the video signal, and then compressing the video signal to be transmitted to a designated destination terminal. delete

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