KR0175608B1 - Co-working methdo of image conference system - Google Patents

Abstract

The present invention relates to a video conferencing system using a computer, and in particular, mutually editing a document or graphic information that is difficult to express each other by video or audio while performing a video conference using a communication network with an opponent using an editor supported by an application program. And how to collaborate on a video conferencing system that can quickly share information by modifying it.

Conventional video conferencing systems have a problem in that video conferencing using a communication network with a counterpart in a remote place can not share information quickly by simultaneously editing or modifying documents or graphic information while conducting a meeting.

The present invention allows the other party to remotely edit and modify documents or graphic information that is difficult to express each other by video or audio while simultaneously performing video conference using a communication network. Anyone who attends a video conference can share information quickly and easily.

Description

How to collaborate on a video conferencing system

The present invention relates to a video conferencing system using a computer, and in particular, mutually editing a document or graphic information that is difficult to express each other by video or audio while performing a video conference using a communication network with an opponent using an editor supported by an application program. And how to collaborate on a video conferencing system that can quickly share information by modifying it.

In general, video conferencing refers to an image that is connected from a computer 100a and a computer 100b that are geographically separated from each other through a communication network and is applied from each computer 100a or 100b, as shown in FIG. Or by simultaneously transmitting the voice data to the application program used in the own computer 100a and the application program of the remote computer 100b at the remote location, the application program of the remote computer at the remote site is informed according to the received image or audio data. It is possible to exchange meetings with each other in remote locations.

In the video conferencing system as described above, when a video conference is performed by using a communication network with a remote party, even if a document or graphic information that is difficult to be expressed by video or audio is edited or corrected during a meeting, the video conferencing is simultaneously edited. However, there is a problem in that information can not be shared quickly by modifying it.

The present invention has been made in view of the above-described problems, and a document or graphic information that is difficult to express with each other by video or audio while having a video conference using a communication network with a remote party is provided using an editor supported by Windows. Is a collaboration method of a video conferencing system that can simultaneously share information by editing, modifying, and modifying information.

In order to achieve the above object, the present invention provides a method for collaborating a videoconferencing system, wherein the transmitting computer sets the data transfer amount of the VCP chip, turns on the data transfer of the VCP chip, and prepares for data transfer. A first step of checking whether A second step of selecting an application program to collaborate with a receiving computer when the data is ready to be transmitted in the first step; After the second process, a third process of initializing a transmission queue, generating a message for input data input from a keyboard or a mouse, and generating window control command data for controlling the application program selected in the second process. and; A fourth step of packetizing the window control command data and a message for data input from a keyboard or a mouse and applying the packetized data to a transmission queue after the third step; A fifth step of transmitting the packetized data stored in the transmission queue to the receiving computer through a network after the fourth step; After the fifth process, the receiving computer checks whether the frame of the H.221 standard is applied from the transmitting computer, and if the frame of the H.221 standard is applied, initializes the receiving queue and the frame of the H.221 standard. A sixth step of separating the packetized data and applying it to the reception queue; A seventh step after the sixth step, extracting a message for the window control command data and the data input from the keyboard or the mouse from the separated packetized data stored in the reception queue; An eighth process, after the seventh process, selecting and controlling an application program of a window corresponding to the extracted window control command data and generating a message for input data; After the eighth process, it characterized in that it comprises a ninth process for implementing the collaboration environment by operating the selected application program according to the generated message.

1 is a conceptual diagram illustrating a video conferencing system.

2 is a configuration block diagram showing operation software of a videoconferencing system.

Figure 3a is a computer side of the transmission in the collaboration method of the video conferencing system according to the present invention

Operation flow chart.

Figure 3b is a view of the receiving computer in the collaboration method of the video conferencing system according to the present invention

Operation flow chart.

Explanation of symbols on the main parts of the drawings

10: initialization / download unit 20: network connection control unit

30: service processing unit 40: operating system unit

100a, 100b: computer

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

Software configuration of the video conferencing system according to an embodiment of the present invention is as shown in Figure 2, the initialization / download unit 10, network connection control unit 20, service processing unit 30 and operating system unit ( 40).

The initialization / downloader 10 starts initial value setting and program downloading of core chips, control of an image overlay circuit, initial value setting of an audio part, and digital signal processor (DSP) control.

The operating system 40 sets up a channel between the video terminal and the ISDN as the call connection between the video terminal and the ISDN is normally terminated, exchanges data in accordance with the H.221 standard, and transmits and receives an error with the other terminal without error. It sends and receives data and sends and receives audio, data, and video with the other side by opening two channels once again.

The network access control unit 20 communicates with the operating system unit 40 according to the call setup step between the video terminal and the ISDN or the exchange.

The service processor 30 controls video signal control processing, a keyboard, debugging, data processing for groupware according to the function of a graphical user interface (GUI), and a shared application (groupware, electronic blackboard) program used for information exchange. do.

The co-working environment of the video conferencing system according to the present invention performs operations in Windows 3.1 and Windows 95. The initial value setting and program downloading of core chips, which are the main video control chips, are performed (VCP.ini, VP Code, H.261 Codec, A). / D CHIP.ini, H.320, H.221 / 220 standards), video overlay chip control, initial value setting of the audio section and DSP control are started in the initialization / download section (10).

In addition, the ISDN access control unit 20 shows communication with the operating system 40 according to the call setup step between the video terminal and the ISDN or the exchange. As the call connection sequence between the video terminal and the ISDN is normally terminated, 1B channel is set up between ISDN, and multiplexer / demultiplexer exchanges data according to H.221 standard and can send / receive data on one channel when sending and receiving data with other terminal without error. In this case, two channels, which are the basis of video conferencing, are assigned to each other to exchange voice, data, and video with the other party.

In addition, the service processor 30 is a module for controlling image signal control processing, communication with a PC, that is, keyboard, debugging, data processing for groupware according to a function of a GUI, and the like, such as a diagram test and a key / mouse dialing. List, Windows screen control, Picture In Picture (PIP), CIF / QCIF, frame rate control, μ / A-law of audio, ADPCM control, auto answer, ring tone control, program supported by Windows Shared functions, shared network status bar, help function, and address book management function.

Among the above-mentioned functions, sharing is necessary to control a program shared with a receiver by using a message of a mouse and a keyboard in Windows, and to exchange information with a picture or a document with a counterpart during a video conference. The shared programs used to exchange this information use programs such as Paintbrush, Notepad, and Document Creator supported by Windows.

The collaboration method in the videoconferencing system constructed as described above operates according to the flowcharts of FIGS. 3A and 3B of the accompanying drawings.

First, in order to drive the VCP chip for data transmission, the sending computer sets the data transmission amount of the VCP chip to 6.4 (Kbps), and turns on the data transmission of the VCP (Vision Compression Processor) chip to prepare for data transmission. Is checked (step S1). After that, when the data is ready to be transmitted, an application program to be shared with the other party is selected (step S2), and the transmission queue is initialized (step S3). Subsequently, a message for input data is generated using a hook function provided by Windows according to data input through a keyboard and a mouse (step S4). The generated message is a message signal 2 bytes and a position signal. It consists of 4 bytes and has a size of 6 bytes. Thereafter, the application program selected in step S2 is generated as two bytes of window control command data (step S5). Subsequently, if the message for the two-byte window control command data and the data input from the six-byte keyboard or mouse is packetized (step S6), the packetized data is applied to the transmission queue (Tx Queue). Step S7), the packets stored in the transmission queue are sent to the receiving side by forming a frame of the H.221 standard together with the video and audio in the VCP which is a video conferencing video codec chip (step S8).

Subsequently, the receiving computer checks whether data is received (step S11). If a frame of the H.221 standard is applied, the receiving queue (Rx Queue) is initialized (step S12), and the frame of the H.221 standard is received. In step S13, the packetized data is separated and applied to the reception queue. Subsequently, the message for the data input from the two-byte window control command data and the six-byte keyboard or mouse is extracted from the separated packetized data (step S14), and according to the extracted window control command data, By selecting and controlling the corresponding Windows application program (step S15), generating a message for input data (step S16), and using the generated input data message for the operation of the selected application program (step S17), The operation of the application program of the receiving side computer is performed in the same way as that of the sending side application program.

On the other hand, input data input from a keyboard or a mouse received by the receiving computer corresponds to data having absolute values of a mouse and a keyboard which are input devices of the sending computer, that is, corresponding to the position of an icon on the screen in Windows, for example. Because the absolute coordinates of the X and Y axes on the screen, the receiving computer is not affected by the operation of the receiving computer's own keyboard and mouse while executing the application program with the received input information. This allows users on both sides to collaborate and accept input from the keyboard and mouse, regardless of which mode the master or slave is in.

Therefore, since the sending computer and the receiving computer are repeatedly performed, the sending computer and the receiving computer can edit and modify the same data and share the same data quickly, even in remote locations. A collaborative work environment is implemented.

As described above, the present invention, while proceeding with a video conference using a communication network with a remote party, while editing a document or graphic information that is difficult to express each other by video or audio, simultaneously editing each other using an editor supported by Windows, By allowing modifications, everyone in the video conference can share information quickly and easily.

Claims (1)

A collaborative method of a videoconferencing system, comprising: a first step of setting a data transfer amount of a VCP chip and turning on data transfer of the corresponding VCP chip to check whether data is ready for transmission; A second step of selecting an application program to collaborate with a receiving computer when the data is ready to be transmitted in the first step; After the second process, a third process of initializing a transmission queue, generating a message for input data input from a keyboard or a mouse, and generating window control command data for controlling the application program selected in the second process. and; A fourth step of packetizing the window control command data and a message for data input from a keyboard or a mouse and applying the packetized data to a transmission queue after the third step; A fifth step of transmitting the packetized data stored in the transmission queue to the receiving computer through a network after the fourth step; After the fifth process, the receiving computer checks whether the frame of the H.221 standard is applied from the transmitting computer, and if the frame of the H.221 standard is applied, initializes the receiving queue and the frame of the H.221 standard. A sixth step of separating the packetized data and applying it to the reception queue; A seventh step after the sixth step, extracting a message for the window control command data and the data input from the keyboard or the mouse from the separated packetized data stored in the reception queue; An eighth process, after the seventh process, selecting and controlling an application program of a window corresponding to the extracted window control command data and generating a message for input data; And a ninth step of implementing a collaborative environment by operating the selected application program according to the generated message after the eighth step.