KR20070054769A - Method for connecting video call in mobile communication terminal - Google Patents

Abstract

A group representative method for connecting a video call between groups in a mobile communication terminal capable of a video call, comprising the steps of: connecting a video call with a representative of another group; and when the video call is connected, using a local area network Including a process of engaging members in a video call and transmitting, in real time, video and audio information received from the representative of the other group to the members participating in the video call. By connecting the masters of each group using H.324M, and making a video call by connecting the masters and members of each group to a local area network, by using only one public network channel for connecting the group masters, Unrestricted, and by using a local area network , Reducing the video call connection time can reduce unnecessary charges.

Video call, video conference, group video call, mobile communication terminal

Description

How to connect video call on mobile terminal {METHOD FOR CONNECTING VIDEO CALL IN MOBILE COMMUNICATION TERMINAL}

1 is a diagram showing a configuration of an inter-group video call system according to the present invention;

2 is a block diagram of a mobile communication terminal capable of a video call according to the present invention;

3 is a diagram illustrating a master procedure for video call progress between groups in a mobile communication terminal according to an embodiment of the present invention;

4 is a diagram illustrating a procedure of a member in a group for video call progress between groups in a mobile communication terminal according to an embodiment of the present invention;

FIG. 5 is a diagram illustrating an operation configuration of a master and a member in a video call between groups in a mobile communication terminal according to an embodiment of the present invention; and

6 is a diagram illustrating a screen configuration of a video call between groups in a mobile communication terminal according to an embodiment of the present invention.

The present invention relates to a video call connection method in a mobile communication terminal, and more particularly, to a method for connecting a video call between groups using H.324M and a local area network in the mobile communication terminal.

The IMT (International Mobile Telecommunications) -2000 system, which is applied as a third generation mobile communication system, is a system for establishing a wireless wireless communication network worldwide so that an unspecified number of people can perform wireless calls worldwide through a mobile phone. Wideband CDMA Mobile System (WCDMA) based on a mobile communication network such as IMT-2000, Universal Mobile Telecommunication System (UMTS), etc. widens the frequency bandwidth to 5 MHz, thereby receiving more multi-path fading channels. Since it can be separated or synthesized by a pass component, it is possible to expect an improvement in reception quality due to diversity of the rake time, which is suitable for high-speed transmission of data. Thus, not only voice wireless call but also file and video service such as Internet service and video call service can be provided to the user.

The video call is provided through H.324M, a terminal system protocol for video telephony and conferencing using a mobile communication network as an international standard defined by the International Telecommunication Union (ITU).

The video call connects all users participating in the video call through the H.324M in the public network. Therefore, when videoconferencing using the video call, the number of people who can participate in the videoconferencing is limited according to the available capacity of the public network. In addition, as the video call service is suspended while the users participate in the video conference, and the waiting time of the video conference is increased, unnecessary charges are generated, and user complaints increase.

Accordingly, an object of the present invention is a method for connecting a video call between groups using H.324M and a local area network in a mobile communication terminal.

Another object of the present invention is a method for conducting a video call between groups by connecting a master of each group through a H.324M and a master and member of each group through a local area network during a video call between groups in a mobile communication terminal. It is about.

According to a first aspect of the present invention for achieving the above object, a method of a group representative for connecting a video call between groups in a mobile communication terminal capable of a video call, the process of connecting a video call with a representative of another group; And when the video call is connected, joining members in the group to the video call using a local area network, and transmitting video and audio information received from the representative of the other group to the members participating in the video call in real time. Characterized in that it comprises a process.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In describing the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

In the present invention, a method for conducting a video call between groups by connecting the master of each group through the H.324M in the video call between the group in the mobile communication terminal, the master and members of each group through a local area network It is about. Here, the H.324M refers to a terminal system protocol for video telephony and conferencing using a mobile communication network, and the local area network connects various information processing devices in close proximity such as Bluetooth, Wireless LAN, and the like. Means a communication network that enables information exchange. In addition, the master can use both H.324M and local area network, and means a subject that connects video calls between groups.

1 illustrates a configuration of an inter-group video call system according to the present invention.

As shown in FIG. 1, the master A 100 of the group A 101 requests a video call to the master B 110 of the group B 111 for a video call between groups. In step 120 it is transmitted.

When the video call request signal is received from the master A 100, the video call management server 130 notifies the master B 110 that the master A 100 requests a video call according to the request signal. (Step 122).

If the master B 110 agrees to the video call connection with the master A, the video call management server 130 connects the master A 100 and the master B 110 using H.324M. (Step 124). When the video call is connected, the master A 100 and the master B connect the members included in each group to the video call using a local area network (step 126).

2 is a block diagram of a mobile communication terminal capable of a video call according to the present invention.

Referring to FIG. 2, a controller (MPU: Micro-Processor Unit) 201 controls the overall operation of the mobile communication terminal. For example, processing and control for voice communication and data communication, and in addition to the usual functions, in accordance with the present invention, video and audio information is connected by connecting the master and members of the group through a local area network during a video call between groups. Process the function to send and receive. Therefore, in the following description, description of the processing and control of the normal control unit 201 is omitted.

The memory 211 may include a program memory, a data memory, and a moving picture memory. The program memory stores microcode of the program and various reference data for processing and control of the controller 201. In particular, according to the present invention stores a program for connecting and transmitting data by connecting a video call between groups via H.324M and a program for connecting and transmitting data by connecting the master and the members in the group using a local area network. The data memory is a working memory of the control unit 201 and stores temporary data generated during execution of various programs. The data memory may include a text buffer for storing text signals input through the keypad 213, an image buffer for storing a video signal generated by the image codec 219, and audio buffers for storing audio signals. . The moving picture memory is a memory for storing a moving picture signal.

Key pad 213 is a numeric key buttons of 0-9, menu button (menu), cancel button (clear), confirmation button, call button (TALK), end button (END), shooting button, Internet A plurality of function keys such as a connection button, navigation key (or direction key) buttons (▲ / ▼ / ◀ / ▶) are provided, and key input data corresponding to a key pressed by a user is provided to the controller 201.

The display unit 221 displays status information generated during the operation of the mobile communication terminal, a limited number of characters, a large amount of video and still images, and the like. The display unit 221 may use a color liquid crystal display (LCD). In addition, under the control of the control unit 201, a video call image provided through a local area network or a master of another group is displayed.

A voice processor (CODEC: Coder-Decoder) 207 connected to the control unit 201 and a speaker 216 and a microphone 214 connected to the voice processor 207 are used for a phone call and voice recording. It is a block. The voice processing unit 207 converts the PCM data provided from the control unit 201 into an analog voice signal, transmits the same through the speaker 216, and converts the voice signal received through the microphone 214 into PCM data. To the control unit 201

In addition, the RF unit 205 reduces the frequency of the radio frequency signal received through the antenna 219 to the baseband processor 203, and provides a baseband from the baseband inverse processor 203. The signal is raised in frequency and transmitted through the antenna 219. The baseband processor 203 processes a baseband signal transmitted and received between the RF unit 205 and the control unit 201. For example, in case of transmission, the channel coding and spreading of data to be transmitted are performed, and in case of reception, the function of despreading and channel decoding of the received signal is performed. .

The camera unit 215 includes a camera sensor for converting an optical signal detected at the time of image capturing into an electrical signal, and a signal processor for converting an analog image signal captured from the camera sensor into digital data. The camera sensor may be a charge coupled device (CCD) sensor, and the signal processor may be a digital signal processor (DSP). In addition, during the video call, the image of the user conducting the video call is captured by the control of the controller 201 and transmitted to the image processor.

The image processor 217 generates screen data for displaying an image signal output from the camera unit 215. The image processing unit 217 processes the image signal output from the camera unit 215 in units of frames, and outputs the frame image data in accordance with the characteristics and size of the display unit 221. In addition, the image processing unit 217 includes an image codec 219, and the image codec 219 functions to code an image signal in a set manner or to decode coded frame image data into original frame image data. do. The image processor 217 generates and plays a video signal according to a mode set under the control of the controller 201.

3 illustrates a procedure of a master for advancing video calls between groups in a mobile communication terminal according to an embodiment of the present invention.

Referring to FIG. 3, first, in step 301, when the video call using the H.324M and the master of another group are connected, the control unit 201 proceeds to step 303 and the group video call using the local area network is performed. Check that the mode is set. If the group video call mode is not set, the controller 201 proceeds to step 333 and performs a corresponding mode (eg, a one-to-one video call mode).

On the other hand, when the group video call mode is set, the controller 201 proceeds to step 305 to drive the local area network. In operation 307, the controller 201 transmits a message requesting that a member of the group within the area of the local area network to participate in a video conference using a video call, and in operation 309. Proceed to check whether the attendance message received from the members.

If the video conference attendance message is received, the controller 201 proceeds to step 311 and checks the attendees in the received message and displays the attendees' information on the display unit 221. For example, when a video call is connected, as shown in FIG. 6 (a), after requesting three members to attend a video conference using a meeting request menu, when the video conference participation consent message is received from the three members, 6, ID_1, ID_2, and ID_3 are displayed.

When the members of the group are connected to the local area network, the control unit 201 proceeds to step 313 and the video and audio information received in real time through the H.324M to the participants in real time using the local area network. send.

In operation 315, the controller 201 determines whether a message for requesting a voice is received from the participants. If the talk right request message is not received, the controller 201 returns to step 313 to transmit the image and audio information.

On the other hand, if the talk right request message is received, the control unit 201 proceeds to step 317 to check the attendee who requested the talk right and displays on the display unit 221 that the attendee requested the talk right. For example, when a voice request message is received from a member of ID_1, as shown in FIG. 6C, a specific indication such as changing an ID color of a member of ID_1 is performed.

After that, if the control unit 201 does not accept the participant's request to speak by the user in step 319, the control unit 201 returns to step 313 to transmit the image and audio information.

If the speaking right request is accepted, the control unit 201 proceeds to step 321 to receive the image and the audio information transmitted by the participant who requested the speaking and receives the received image and the voice instead of the own image and the audio information. Voice information is sent to the master of the other group.

Thereafter, the controller 201 proceeds to step 323 and checks whether a speaking end message is received from the participant who requested the speaking. When the speaking ending message is received, the controller 201 proceeds to step 325 and the speaking. Stop receiving image and audio information from the requester, and transmit the image and audio information of the master itself.

The controller 201 proceeds to step 327 and checks whether an end of the video conference is selected. If the end of the video conference is not selected, the control unit 201 returns to step 313 to transmit the video and audio information.

If the end of the video conference is selected, the control unit 201 proceeds to step 329 to release the local area network connection with the members and then releases the H.324M connection. Thereafter, the controller 201 ends the present algorithm.

4 is a flowchart of a member's procedure for video call progress between groups in a mobile communication terminal according to an exemplary embodiment of the present invention.

Referring to FIG. 4, when the video conference attendance request message using the video call is received in step 401, the control unit 201 displays a message indicating that there is a video conference attendance request, as shown in FIG. The display unit 210 displays the user to confirm whether the user agrees to attend the video conference.

If the user does not agree to attend the video conference, the controller 201 proceeds to step 423 and transmits a video conference attendance rejection message to the master who sent the video conference attendance request message, and the controller 201 Terminate this algorithm.

On the other hand, if the user agrees to attend the video conference, the control unit 201 proceeds to step 405 and transmits a conference attendance consent message to the master, and the control unit 201 proceeds to step 407 using a local area network. Receive image and audio information from the master in real time.

Thereafter, the controller 201 proceeds to step 409 and checks whether the speaking request menu is selected by the user. That is, it is checked whether a speech request message is selected to receive acceptance of the speech from the master in order to express his / her opinion during the video conference.

If the speak request menu is selected, the controller 201 proceeds to step 411 and transmits the speak request message to the master, and then the controller 201 proceeds to step 413 and a message indicating whether to accept the speak from the master is displayed. Check if it is received. For example, after a user of ID_1 transmits a message requesting acceptance of a speech to a master, it is checked whether a message for accepting a speech is received from the master.

If the received message is a message that does not accept the speech, the control unit 201 returns to step 407.

On the other hand, if the received message is a message that accepts the speech, the controller 201 proceeds to step 415 in which the image obtained through the camera unit 221, the image processor 217, and the audio processor 207 and Voice information is transmitted to the master in real time using the local area network.

In step 417, the controller 201 determines whether the speaking end menu is selected by the user. If the speaking end message is not selected, the controller 201 returns to step 415.

On the other hand, if the speech termination message is selected, the control unit 201 proceeds to step 419 to stop the transmission of the image and audio information. In step 419, when the video conference end message is received, the controller 201 releases the local area network connection and terminates the algorithm.

5 is a diagram illustrating an operation configuration of a master and a member in a video call between groups in a mobile communication terminal according to an exemplary embodiment of the present invention. In the following description, since group A and group B perform the same operation, the group B will be described as an example.

Referring to FIG. 5, through the application and acceptance of a video call between the master B 500 of the group B 501 and the master A 510 of the A group 511, the master A and the master B are connected to the H. The connection is made through the 324M (step 520). Here, the masters transmit and receive video and audio information with the other master in real time until the H.324M connection is released.

When the video call is connected, the master B 510 requests the members 512 and 514 in the group to participate in the video conference using the local area network to participate in the video conference by joining the members in the group (step 522). . Members 512 and 514 in the group receiving the video conference attendance request message transmit a message to the master B to determine whether to attend (step 524).

The master B 510 checks the attendance message received from the members 512 and 514 and is received in real time through the H.324M to the members 512 and 514 who have agreed to participate in the group video conference. The video and audio information is transmitted through the local area network (step 526). Here, the master B 510 transmits the video and audio information to the members 512 and 514 in real time until the video conference is terminated and the local area network is released.

Subsequently, a specific member 512 among members 512 and 514 receiving the image and audio information from the master B 510 transmits a message to the master B 510 requesting acceptance of the speech in order to speak. In operation 528, the master B 510 receiving the speech request message transmits a message indicating whether to accept the speech request to the specific member 512 in operation 530.

The specific member 512 receiving the message indicating whether to speak the consent is obtained through the camera unit 221, the image processing unit 217, and the voice processing unit 207 when the acceptance of the speech is confirmed in the received message. The video and audio information is transmitted to the master B 510 (step 532).

When the master B 510 receives the image and audio information from the member 512, the master B 510 stops transmitting its own image and audio information transmitted to the master A 500 through the H.324M. The video and audio information received from the member 512 is transmitted to the master A (step 534).

Thereafter, when the statement ends, the member 512 transmits a message indicating the end of the statement to the master B 510 (step 536). The master B 510 receiving the speech end message stops transmitting the image and audio information received from the specific member 512 to the master A 500 (step 538), and again, the master B 510. In operation 540, the image and audio information of the user is transmitted to the master A 500.

If the group meeting ends, the master A 500 and the master B 510 release the connection with the member connected through the local area network (step 542), and then release the H.324M connection (step 544). ).

Meanwhile, in the detailed description of the present invention, specific embodiments have been described, but various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined not only by the scope of the following claims, but also by the equivalents of the claims.

As described above, when a video call is performed between groups in a mobile communication terminal, the masters of each group are connected by using H.324M, and the masters of each group are connected by a local area network to make a video call. By using only one public network channel to connect, it is not limited by the capacity of the public network, and by using a local area network between the master and the member, it is possible to reduce unnecessary calls by reducing the video call connection time.

Claims (20)

A method of operating a group representative for performing a video call between groups in a mobile communication terminal capable of a video call, Verifying that the video call connects with another group, When the video call is connected, connecting the video call with the members of the group using a local area network; And transmitting, in real time, video and audio information received in a video call to the other group to members in a group connected through the local area network. The method of claim 1, The video call with the other group is connected via H.324M. The method of claim 1, The local area network, characterized in that any one of Bluetooth (Bluetooth), Wireless LAN (Wireless LAN). The method of claim 1, And the group representative connects the video call between the groups and connects the video call to the members of the group using a local area network. The method of claim 1, The process of connecting the video call with the members in the group, Transmitting the video call attendance request message to members of the group; Checking whether a video call attendance consent message is received from members in the group that received the video call join request message; And if the received message is a video call attendance consent message, connecting the members who have agreed to attend the video call using a local area network. The method of claim 1, When connecting a video call with the members of the group, Checking whether a voice request message is received from a specific member; Determining whether to allow speaking of the specific member when the speaking right request message is received; And if the speaking of the particular member is allowed, receiving video and audio information from the particular member and transmitting the same to the other group. The method of claim 6, Upon receiving the speaker's video and audio information, And when the speech end message is received from the speaker, transmitting the image and audio information of the representative to the other group. In a mobile communication terminal capable of a video call, a method of operating a member in a group for performing a video call between groups, Confirming that a video call participation request message is received from a representative of the group; Determining whether to attend the video call when the video call participation request message is received; If the user agrees to attend the video call, transmitting a message informing the representative of the video call; And receiving in real time video and audio information transmitted by the representative through a local area network. The method of claim 8, The local area network, characterized in that any one of Bluetooth (Bluetooth), Wireless LAN (Wireless LAN). The method of claim 8, And the representative of the group connects the video call between the groups and connects the video call to the members of the group using a local area network. The method of claim 10, And said group video call is connected via H.324M. The method of claim 8, If not agreeing to attend the video call, sending a message informing the representative of the rejection of the video call. The method of claim 8, When the video call is connected to the group representative, checking whether a voice request menu for speaking on the video call is selected; When the voice request menu is selected, transmitting a message requesting permission to speak to the representative; Checking whether a message indicating whether to agree with the request for utterance is received; And receiving a message in agreement with the request for speaking right, in real time, transmitting image and audio information to the representative. The method of claim 13, When the speech ends, transmitting a speech termination message to the representative; Stopping the transmission of the image and audio information. A method for performing a video call between groups in a mobile communication terminal capable of a video call, When a video call is connected between each group, the representatives of the group transmit a video call participation request message to the members of each group; Determining whether or not the members of each group receive the video call participation request message to transmit the video call attendance message to a representative of each group; And receiving, by a representative of each group receiving the video call attendance message, real-time video and voice information of another group using a local area network to members who agree to attend the video call. . The method of claim 15, Representatives and members of each group, Transmitting, by a particular member of the members participating in the video call, a voice request message to the group representative; Confirming whether the representative of the group that has received the talk request message allows the speaking of the specific member; Transmitting the video and audio information to the group representative by the specific member if the group representative allows the specific member to speak; And transmitting, by the group representative, the image and audio information received from the specific member to the representative of the other group. The method of claim 16, When the specific member speaks, the specific member transmitting a speaking end message to the group representative; And when the group representative receives the speech end message, transmitting the image and audio information of the group representative to the representative of the other group. The method of claim 15, And said group video call is connected via H.324M. The method of claim 15, The local area network, characterized in that any one of Bluetooth (Bluetooth), Wireless LAN (Wireless LAN). The method of claim 15, And the representative of each group connects the video call between the groups and connects the video call to the members of the group using a local area network.

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