KR20070013067A - Method and terminal for image sharing - Google Patents

Abstract

A method for sharing images and a mobile terminal therefor are provided to transmit more vivid information by sharing an image together with a voice call in case it is difficult to exactly deliver information to the other party through voice only. In case of executing a multipoint call and image sharing between many terminals, the associated terminals open a voice channel. At this moment, a transport channel, in addition to the voice channel, is allocated and opened(S300). The users set their terminal modes to either a receiver mode or a sender mode(S301). A user of the sender-mode terminal selects either a frequency mode or an event mode to transmit image data(S302). In case the user of the sender-mode terminal selects the frequency mode, the sender-mode terminal captures image data, displayed on the display window, every event(S303). The sender-mode terminal compresses the captured image data(S304). The sender-mode terminal fits the compressed image data to the size of each of the other receiver-mode terminals(S305). Then, the sender-mode terminal sends the image data to the receiver-mode terminals every period(S306).

Description

Method for sharing video and terminal for same {METHOD AND TERMINAL FOR IMAGE SHARING}

Figures 1a to 1d are shown to aid the conceptual understanding of the present invention

2 is a block diagram showing an embodiment of a terminal for video sharing according to the present invention;

3 is a flowchart illustrating an embodiment of an image sharing method according to the present invention.

* Explanation of symbols for main parts of the drawings

200: terminal 210: screen capture (capture) means

220: video compression means 230: video transmission means

240: image receiving means 250: transmission control means

260: mode setting means 270: sending agent (Agent)

The present invention relates to a video sharing method and a terminal therefor, and more particularly, to a method in which a terminal user shares a video of his or her terminal with another terminal user in real time in a communication environment. It relates to a law and a terminal therefor.

Recently, a mobile terminal supports not only a communication method using voice information but also a video communication in a multimedia environment for transmitting image information.

In addition, the terminal receives the specific image information with the attached camera, and also displays a screen on the screen display window of the terminal, or provides a function for storing in the terminal storage unit. Accordingly, the user can transmit the stored video or image information through the mobile communication network according to the mobile communication protocol.

In particular, recently, communication with the Internet network is partially enabled through a mobile communication network, and standards such as a personal computer, a PC, which can fully interwork with the Internet network, are being prepared.

In addition, a method of delivering information such as media to the terminal in addition to the existing voice call is divided into a real-time streaming and off-line transmission method.

In the off-line transmission method, information such as an image is stored in a terminal and then transmitted as a file through a mobile communication network. On the other hand, an example of real-time streaming may be a video call, which may transmit and display an image input through a camera to a screen of a counterpart terminal display window in real time.

However, in the Off-line transmission method as described above, only the stored file is transmitted. Therefore, only the information that has already passed since the acquisition of the information can be acquired, and the user needs to use an inconvenient interface of storing and selecting the transmission. In the case of a video call, which is a real-time streaming, there is a limitation that only limited information can be shared in real time with a voice and a camera image. Therefore, a preferable method for this is not presented, and there are many problems in developing a new terminal.

The present invention is to solve the above problems, an object of the present invention is to share a video of a specific user terminal in a communication environment with a plurality of terminal users in a far more efficient video sharing method and a terminal for the user To provide.

In order to achieve the above object, the present invention provides a communication environment in which an image is shared between a first terminal and a second terminal. Setting a mode, (c) capturing an image of the first terminal screen display window, and (d) transmitting the captured image to a second terminal. Provides a video sharing method.

In addition, the step (d) further comprises the step of compressing the captured image.

The step (d) may further include correcting the captured image according to the specification of the second terminal screen display window.

In addition, the present invention provides a communication environment in which an image is shared between a first terminal and a second terminal, the method comprising: receiving an image from a first terminal in a transmission mode and a screen display window of the second terminal in receiving a received image Comprising the step of correcting according to the specification, and displaying the corrected image on the screen display window of the second terminal provides an image sharing method in a communication environment.

The present invention also provides a transmission agent for converting a terminal into a transmission mode, screen capture means for capturing an image of a terminal screen display window in which the transmission agent is in transmission mode, and image compression means for compressing the captured image; And a video transmission means for transmitting the compressed video and a transmission control means for controlling the video transmission.

In addition, the terminal of the present invention is characterized in that it further comprises a video receiving means for receiving an image from a transmission mode terminal, and a mode setting means for setting a data mode through a user interface.

Therefore, according to the present invention, not only a voice call but also an image provided by a specific terminal user can be efficiently shared among the terminal users.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention that can be specifically realized for the above purpose.

In addition, the terminology used in the present invention was selected as a general term that is widely used at present, but in certain cases, the term is arbitrarily selected by the applicant, in which case the meaning is described in detail in the corresponding part of the present invention, It is to be understood that the present invention is to be understood as a meaning of a term rather than a name of a term.

In this regard, in the present invention, "image" refers to start information reproduced and displayed on a screen such as 2D or 3D by some technical means, and is used in the same concept as an image, and "image data" means image information. Refers to the expressed data.

In particular, in the present invention, the term image is used in a comprehensive sense including an image, text, video, and the like, and the technical idea of the present invention is not limited thereto.

In this regard, in the present invention, the term "terminal" refers to a point at which information is input / output in a communication network, or means a device for making or viewing data in a digital data transmission system or a device for performing a function for sending or receiving data. .

At this time, examples of the terminal include a mobile communication terminal, a PDA phone, a PC, a TV capable of communicating, but the technical concept of the present invention is obviously applicable to other terminals of wired / wireless.

For example, in the present invention, a terminal in a transmission mode for transmitting video data is defined as a first terminal, and a terminal in a reception mode for receiving video data is defined as a second terminal.

However, when the second terminal in the reception mode enters the transmission mode by the transmission request, the second terminal transmits data, and the first terminal in the reception mode receives the data, and the terminal of the transmission mode and the reception mode It is noted that more than one terminal is possible.

In this regard, in the present invention, "Agent" refers to a function that understands an intention according to a specific scene and executes a process by independent judgment, that is, a program that executes a specific purpose when a target web page is found.

In this regard, in the present invention, "Data Mode" means a transmission mode indicating how image data is transmitted by a terminal that transmits an image. Examples of the data mode include an event mode and a frequency mode. Mode).

The "Event Mode" captures an image of a terminal screen display window whenever an event such as a button or an electronic pen occurs when the image is updated by a slide or an electronic pen manipulation. "Frequency Mode" refers to a case in which a video is periodically captured and transmitted when an image of a terminal screen display window is automatically updated regardless of an event such as a video.

1A to 1D are diagrams to help conceptual understanding of the present invention. In particular, FIG. 1A to 1D illustrate a case where three users share an image using a terminal.

First, in order to start a multi-party call or video sharing, it starts with opening a voice channel between terminals 1, 2, and 3 as shown in FIG. 1A.

Thereafter, as shown in FIG. 1B, an image channel is opened separately from an audio channel for communication between terminals.

At this time, if the terminal 1 of the user who attempted the first transmission is set to the transmission mode, the other terminals, terminals 2 and 3, are automatically set to the reception mode. Basically, in the conference call, it is preferable that the terminal of the calling user is set as the transmission mode terminal. However, the terminal in the transmission mode may vary according to the setting.

Accordingly, as shown in FIG. 1C, the image transmission is performed in the direction of the terminal 1 to the terminal 2, 3.

When a terminal in a reception mode is receiving data and wants to send data to other terminals, a transmission request is made. The terminal which has made a transmission request according to the transmission request becomes a transmission mode terminal and transmits the data. Becomes a receive mode terminal and receives data.

For example, referring to FIG. 1D, when the terminal 2 makes a transmission request and becomes a transmission mode terminal, the terminal 2 transmits data to the terminals 1 and 3.

Although the case of three terminals is used as an example, the present invention is applicable to a case where there are a plurality of terminals, and in the above case, there is one transmission mode terminal, but the present invention is applicable to a case where there are a plurality of transmission mode terminals. Is a self-explanatory fact.

Hereinafter, a terminal and an image sharing method for image sharing according to the present invention will be described with reference to FIGS. 2 and 3.

2 is a block diagram showing an embodiment of a terminal for video sharing according to the present invention.

The terminal 200 includes screen capturing means 210 for capturing an image of the terminal screen display window, image compression means 220 for compressing the captured image, and image transmitting means 230 for transmitting the compressed image. And video receiving means 240 for receiving an image transmitted from a specific terminal, controlling image transmission / reception, in particular, control for transmitting an image when an event occurs or periodically, and network traffic. It comprises a transmission control means 250 for controlling the transmission rate.

In addition, mode setting means 260 for setting a data mode setting to either an event mode or a frequency mode through a user interface, and the terminal transmits data. And a transmission agent 270 for setting the transmission / reception mode to the transmission mode.

The above-mentioned terminal structure has been described only in relation to the present invention, and it is obvious that all the functions of the general terminal are included.

3 is a flowchart illustrating an embodiment of an image sharing method according to the present invention.

First, it opens an audio channel, which is an internal channel for voice communication, to start a conference call and share video.

After opening the voice channel, a separate transmission channel is assigned to the voice channel, and the allocated transmission channel is opened (S300).

At this time, by allocating a transmission channel which is a channel which has no relation to the voice channel through which the call is transmitted, there is no factor that impairs the quality of the call by the voice call.

In other words, the new channel is allocated to share the video separately from the phone call, and the conversation is performed the same as the previous call. Currently, multi-party calls, which can be talked to by multiple people at the same time, are conducted separately from video sharing.

In other words, you can share images while listening to each other's words.

However, although the case of allocating a transmission channel which is a channel different from the voice channel in the present invention is taken as an example, the technical concept of the present invention may be naturally applied even when transmission of voice and video is performed through one channel.

After the transmission channel assignment step (S300), the transmission and reception mode of the terminals indicating whether the terminal is a transmission mode for transmitting data or a data reception mode is set (S301).

For example, when terminals of several users are connected at the same time and the images of one user terminal screen display window are shared by the terminals of several users, only one image of the user terminal is sent, so the terminal that transmits data is transmitted. Set to Sender Mode, and set terminals to receive mode.

For example, when the terminal of the first user who attempts to transmit is set to the transmission mode by a user operation, the transmission / reception mode setting may be set to the reception mode automatically so as to prevent simultaneous transmission. Do.

However, as mentioned above, the present invention can be applied to a case where there are a plurality of terminals in a transmission mode in addition to one terminal in a transmission mode.

If the transmission mode terminal finishes transmitting the image data, all users can request to set their terminal to the transmission mode by a user's operation. The terminal requesting the transmission mode is set to the transmission mode. To transmit the image data, and the other user terminals are automatically set to the reception mode again.

According to the present invention, when a specific receiver wants to transmit his or her terminal image during reception, a method of stopping transmission of image data of an existing transmission mode terminal and changing itself to a transmission mode by a transmission request during image data reception is provided. Name it "Pre-Emption Method." That is, when a mode change occurs in the middle of data transmission and reception, the terminal for transmitting the image data is changed.

In contrast, according to the service method, when a transmission mode terminal does not allow another user to switch its terminal to a transmission mode until the transmission of the image data is stopped, the "Non-Pre-Emption method" is called.

In addition, the present invention basically describes a case in which one terminal shares an image from one terminal, for example, but can provide an extended function of simultaneously sharing a screen from two or more terminals. The technical idea is not constrained by this.

After the transmission / reception mode is set, the user selects a data mode of whether the transmission mode terminal transmits the image data in the frequency mode or the event mode (S302). .

Here, the data mode setting may be regarded as a case of setting a transmission rate. For example, in case of image data such as a video, the image of the screen display window is automatically updated, considering the network traffic, the terminal or the terminal communicates. It can be set to transmit at the maximum transmittable frame (Frame) per second or the set frame rate (Frame-Rate) on the network.

When the text or transmission mode terminal user transmits a modified image by an editing tool, the image data is set to be transmitted when the image buffer is changed or the image is newly updated, or an event is generated by a button or an electronic pen. In this case, the video data may be set to be transmitted when the event occurs.

When the data mode is the frequency mode, video data such as a moving picture, an image, and a text displayed on the transmission mode terminal screen display window are captured at each event (S303).

It is also noted that it is possible to capture video data stored in the memory of the transmission mode terminal.

The image data captured in the step S303 is compressed for transmission (S304). This step is performed to transmit a large amount of data in a short time, and it may be possible to transmit the image data without compression without compressing it.

The captured and compressed image data is corrected according to the size of the screen display window of the reception mode terminal (S305).

This is because there is not one type of terminal used by each user, and thus has different sized terminal screen display windows. Accordingly, the size of the image transmitted by the transmission mode terminal does not necessarily correspond to the size of the screen display window of the reception mode terminal.

Therefore, the size of the image displayed to the user of the reception mode terminal is adjusted by applying a ratio of the size of the transmission mode terminal screen display window to the size of the reception mode terminal screen display window.

Such correction can be performed by the transmission mode terminal after the correction in accordance with the specification of the reception mode terminal, and by the reception mode terminal receiving the uncorrected image data.

The former method is advantageous when the transmission mode terminal and the reception mode terminal have 1: 1 communication, and the latter method is advantageous when the transmission mode terminal and the reception mode terminal have 1: n communication.

In this case, in the case of the method of calibrating in the transmission mode terminal, specification information for the reception mode terminals is preferably obtained when establishing a session to allocate channels to each other.

After the step S305, the image data is transmitted to the reception mode terminal in real time at intervals (S306).

At this time, the reception mode terminal receives the image data and displays the image on the screen display window of the reception mode terminal to share the image between the terminal users.

In step S302, when the data mode is the event mode, video data such as a moving picture, an image, a text, and the like displayed on the transmission mode terminal screen display window is captured every time an event occurs (S307).

The image data captured in the step S307 is compressed for transmission (S308). This step is performed to transmit a large amount of data in a short time, and it may be possible to transmit the image data without compression without compressing it.

The captured and compressed image data is corrected according to the size of the screen display window of the reception mode terminal (S309). Since the detailed description of this step has been described above, it will be omitted here.

After the step S309, the video data is transmitted to the reception mode terminal every time an event occurs (S306).

At this time, the reception mode terminal receives the image data and displays the image on the screen display window of the reception mode terminal to share the image between the terminal users.

After the above steps (S306, S310), if a specific terminal user among the reception mode terminals wants to send the image data to another terminal user and makes a transmission request, the terminal of the user making the transmission request becomes a transmission mode terminal, and the remaining terminals Is the reception mode terminal (S311).

In this case, when a specific terminal among the reception mode terminals enters a transmission mode while receiving image data, the above-mentioned "pre-emption method" refers to the case where the transmission mode is received after the reception of the image data "Non-Pre-Emption". Way ".

After the step S311, the process from step S302 is performed again to share the image among the terminal users.

As described above, the present invention relates to a technology for sharing a screen with a plurality of terminal users in a communication environment, in which a user (for example, a teacher) who wants to explain some information to another user has different information in different places. This technique is useful for situations where you want to explain in detail with reference materials. At this time, the voice data can be exchanged in the same way as before, so that other users who listen to the explanation while watching the shared screen can frequently ask questions.

In addition, the present invention, if the user who listened to the description while watching the shared video has better information on their terminal or by using a camera attached to their terminal to change the image or video information about the environment or place If the user wants to share with the user, the user can switch the terminal mode from the reception mode to the transmission mode to switch to share the image currently displayed on the terminal.

The present invention is not limited to the above-described embodiments, and can be modified by those skilled in the art as can be seen from the appended claims, and such modifications are within the scope of the present invention.

The video sharing method and the terminal for the same according to the present invention described above by sharing a video, such as text, images, and video with a voice call at the same time when it is difficult to accurately transmit information to the other party only by voice between the terminal users It has the effect of delivering more vivid information.

Claims (12)

In a communication environment in which an image is shared between a first terminal and a second terminal, (a) assigning a transport channel; (b) setting a first terminal for transmitting data to a transmission mode; (c) capturing an image of the first terminal screen display window; and (d) transmitting the captured image to a second terminal. The method of claim 1, wherein step (d) Compressing the captured image further comprises the image sharing method in a communication environment. The method of claim 1, wherein step (d) And correcting the captured image according to the specification of the second terminal screen display window. The method of claim 1, wherein step (a) comprises: The allocated transmission channel is a video sharing method in a communication environment, characterized in that the channel is different from the channel through which the voice is transmitted and received. According to claim 1, wherein step (b), If the first terminal is in the transmission mode, the second terminal is in the receiving mode, the data sharing method in the communication environment, characterized in that the second terminal can not transmit data until the first terminal finishes transmitting data. According to claim 1, wherein step (b), Even when the first terminal is in the transmission mode, when a specific terminal of the second terminal in the reception mode makes a transmission request, the second terminal enters the transmission mode and stops the data transmission from the first terminal and the second terminal transmits the data. An image sharing method in a communication environment characterized by the above-mentioned. The method of claim 1, wherein in step (b), And at least one terminal in the transmission mode. In a communication environment in which an image is shared between a first terminal and a second terminal, Receiving an image from a first terminal in a transmission mode; Correcting the received image according to a specification of a screen display window of a second terminal in a reception mode; And displaying the corrected image on a screen display window of a second terminal. A sending agent for converting the terminal into a transmission mode, Screen capture means for capturing an image of a terminal screen display window in a transmission mode by the transmitting agent; Image compression means for compressing the captured image; Image transmission means for transmitting the compressed image; And a transmission control means for controlling the video transmission. The method of claim 10, And a video receiving means for receiving an image from a transmission mode terminal. The method of claim 10, And a mode setting means for setting a data mode through a user interface. The method of claim 11, The data mode (Data Mode) is a terminal for image sharing, characterized in that any one of the event mode (Event Mode), the frequency mode (Frequency Mode).

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