KR0168923B1 - Multimedia terminal apparatus for providing various multimedia communication service - Google Patents

Abstract

The present invention relates to a multimedia terminal device capable of integrating and providing various multimedia communication services in an ATM environment. The present invention relates to a video conference and a video by appropriately combining devices for a two-way interactive communication service and devices for a one-way distributed communication service. Various communication services such as telephony, video on demand, multimedia search, and remote collaboration can be simultaneously accommodated, thereby contributing to the spread of various communication services in the multimedia era.

Description

Multimedia terminal device that provides various multimedia communication services

1 is a block diagram of an embodiment of a multimedia terminal device for integrating and providing various multimedia communication services according to the present invention.

2 is a block diagram of an embodiment of a video / audio input / output unit of FIG.

* Explanation of symbols for main parts of the drawings

1: communication network processing unit 2: interactive media multiplexing unit

3: distributed media demultiplexer 4: interactive service processor

5: data processing unit 6: interactive audio compression and decompression unit

7: Interactive Video Compression and Restoration 8: Distributed Audio Restoration

9: distributed video recovery unit 10: distributed service processing unit

11: session processing unit 12: call connection processing unit

13: system control unit 14: video / audio input and output unit

21: video merge unit 22: video output unit

23: Video A / D Converter 24: Audio D / A Converter

25: Audio A / D Converter

The present invention relates to a multimedia terminal device that can integrate and provide various multimedia communication services in an ATM (Asynchronous Transfer Mode) environment.

Recently, as the demand for various services is gradually increased, there is an urgent need for the integrated provision of various communication services in one terminal device.

However, since the conventional communication terminal devices do not consider the simultaneous acceptance of various communication services, it is not possible to integrate and provide various communication services through one communication network. There is a problem in that it requires too many devices and the amount of communication network.

Accordingly, the present invention has been made to solve the above problems, and in providing various multimedia communication services by integrating, to co-process session and call connection of various communication services, video conferencing, video telephony Its purpose is to provide a multimedia terminal device that can simultaneously accommodate various communication services such as video on demand, multimedia search, and complete collaboration.

In order to achieve the above object, the present invention provides a multimedia terminal device that integrates and provides various multimedia communication services, extracts and outputs user data from the received data transmitted from an external communication network, receives the transmission data and receives Communication network connection means for transmitting to a communication network; Interactive media multiplexing means for demultiplexing the media stream delivered through the network connection means and multiplexing the media for the delivered interactive service; Distributed media demultiplexing means for demultiplexing a media stream for distributed services delivered through said network connection means; Interactive service processing means for transmitting, to the interactive media multiplexing means, service control information for transmitting to an external communication network according to the interactive service control signal transmitted from the interactive media multiplexing means; Data processing means for transmitting text data in the interactive multiplexing frame transmitted from the interactive media multiplexing means to the outside; Interactive audio compression and decompression means for compressing audio for an interactive service delivered from the outside and delivering the audio to the interactive media multiplexing means, and restoring audio for the interactive service delivered to the interactive media multiplexing means; Interactive audio compression and decompression means for compressing a video for an interactive service delivered from the outside and delivering it to the interactive media multiplexing means, and for restoring the video for the interactive service delivered from the interactive media multiplexing means; Distributed audio recovery means for recovering received compressed audio data transmitted from the distributed media demultiplexing means; Distributed audio recovery means for recovering the received compressed video data transmitted from the distributed media demultiplexing means; Distributed service processing means for providing, to the communication network connection means, service control information necessary for communication with the outside in accordance with the distributed service control signal transmitted through the communication network connection means; Session processing means for establishing a session connection with the outside according to session control signals of various communication services transmitted through the communication network connection means; Call connection processing means for making a call connection with the outside in accordance with call connection control signals of various communication services transmitted through the communication network connection means; The distributed service processing means; System control means for controlling said distributed service processing means, said session processing means and said call connection processing means; And outputting the distributed audio and the distributed video inputted from the distributed audio recovery means and the distributed video recovery means to the outside, and compressing the interactive audio and the interactive video input from the outside, respectively. And the interactive audio input from the interactive audio compression and decompression means and the interactive video compression and decompression means, and the interactive audio and the dialogue input from the interactive video compression and decompression means. And video / audio input / output means for outputting a video outwardly.

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

1 is a block diagram of an embodiment of a multimedia terminal device for integrating and providing various multimedia communication services according to the present invention.

As shown in FIG. 1, the multimedia terminal apparatus integrating and providing various multimedia communication services according to the present invention extracts and outputs user data from reception data transmitted from an external communication network, receives transmission data, and receives external data. A communication network multiplexer 2, which demultiplexes the media stream transmitted through the network connection 1, and multiplexes the media for the delivered interactive service, a communication network According to the distributed media demultiplexer 3 for demultiplexing the media stream for the distributed service delivered through the connection unit 1 and the interactive service control signal transmitted from the interactive media multiplexer 2, Interactive service processing unit (4), interactive MIDI to transmit service control information for communication to the communication network of the interactive media multiplexer (2) Data processing unit 5 for transmitting text data in the interactive multiplex frame transmitted from the multiplexer 2 to the outside, and an interactive media multiplexer by compressing audio for an interactive service transmitted from the outside ( 2), an interactive audio compression and decompression unit 6 which restores audio for the interactive service delivered from the interactive media multiplexer 2, and compresses video for an interactive service delivered from the outside. An interactive audio compression and decompression unit 8 for transmitting to the interactive media multiplexer 2 and restoring video for the interactive service delivered from the interactive media multiplexer 2, a distributed media demultiplexer ( 3) a distributed audio restoration unit 8 for restoring the received compressed video data transmitted from 3) and a distributed audio restoration unit for restoring the received compressed audio data transmitted from the distributed media demultiplexer 3; In accordance with the video restoration unit 9 and the distributed service control signal transmitted through the communication network connection unit 1, the distributed service processing unit providing service control information necessary for communication with an external communication network to the communication network connection unit 1 ( 10) in accordance with session control signals of various communication services transmitted through the communication network connection unit 1, the session processing unit 11 for making an external communication network session connection, and various communication transmitted through the communication network connection unit 1 A system for controlling the call connection processing unit 12, the distributed service processing unit 10, the session processing unit 11, and the call connection processing unit 12, which make a call connection with an external communication network according to the call connection control signal of the service. Outputs the distributed audio and distributed video inputted from the control unit 13, the distributed audio recovery unit 8 and the distributed video recovery unit 9 to the outside, and the interactive audio and interactive video inputted from the outside. Each conversation The interactive audio compression and decompression unit 6 and the interactive video compression and decompression unit 7 are transferred to the interactive audio compression and decompression unit 6 and the interactive video compression and decompression unit 7. An audio and interactive video / audio input / output unit 14 is provided.

Referring to the operation of the multimedia terminal device of the present invention having the structure as described above in detail as follows.

The communication network connection unit 1 receives the received data from the communication network used in the system, extracts user data, and uses the interactive media multiplexer 2, the distributed media demultiplexer 3, the distributed service processor 10, and a session. Transfer to processing unit 11, call connection processing unit 12, interactive media multiplexing unit 2, distributed media multiplexing unit 3, distributed service processing unit 10, session processing unit 11, call connection processing unit It is responsible for transmitting the transmission data transmitted from (12) to the communication network.

Here, the interactive media multiplexer 2 and the communication network connection unit 1 exchange multiplexed media streams for an interactive service. The network connection 1 delivers the multiplexed media stream for distributed service to the distributed media multiplexer 3. Send and receive service control signals (media stream control, application service control) for distributed services between the network connection unit 1 and the distributed service processing unit 10, and control sessions between the network connection unit 1 and the session processing unit 11. Send and receive signals for Further, control signals for call connection are exchanged between the communication network connection unit 1 and the call connection processing unit 12.

The interactive media multiplexer 2 serves to multiplex and demultiplex media for interactive services. The interactive media multiplexer 2 most preferably follows the frame structure of H.221 as recommended by the International Telecommunication Union (ITU-T), the international standardization organization. Within the frame are text data for video, audio and remote collaboration or data file transfer.

The interactive media multiplexer 2 exchanges signals with the interactive service processor 4, the data processor 5, the interactive audio compression and decompression unit 6, and the interactive video compression and decompression unit 7. First, the interactive service processor 14 receives and processes service control signals for providing an interactive service, that is, a video call / video conference, etc. from the interactive media multiplexer 2, and transmits them to the counterpart terminal device. It is responsible for transmitting the service control signals to the interactive media multiplexer (2). The service control signal includes capability information of the opposite terminal device and the own terminal device, each media capacity allocation telegram of the multiplexed frame, alignment information of the multiplexed frame, and the like.

The data processor 5 exchanges text data included in the interactive multiplexed frame with the interactive media multiplexer 2, and is responsible for processing thereof.

The interactive audio compression and decompression unit 6 is responsible for the audio compression and decompression unit for the interactive service. To maintain compatibility with other terminal devices, audio compression / restore uses the International Telecommunication Union (ITU-T) Recommendations G.711, G.722, and G.728. The compressed audio stream between the interactive audio compression and decompression unit 6 and the interactive media multiplexer 2 is transmitted and received.

The interactive video compression and decompression unit 7 performs compression and decompression of the video for the interactive service. Video compression / restore uses H.261, recommended by the International Telecommunication Union (ITU-T). The compressed video stream between the interactive video compression and decompression unit 7 and the interactive media multiplexer 2 is transmitted and received.

The distributed media multiplexer 3 demultiplexes the multiplexed and transmitted video and audio for distributed services such as video on demand or cable television, remote database search service, and the like. To pass). In this case, it is preferable to use the MPEG-2 (Moving Pictures Experts Group-2) system (13818-1) recommended by the International Organization for Standardization for the mutual compatibility of other terminal devices. 3) delivers compressed audio and video streams for distributed services to distributed audio recovery section 8 and distributed video recovery section 9, respectively.

Received compressed audio data transmitted from the distributed audio recovery unit 8 and the distributed media demultiplexer 3 are restored to the video audio input / output unit 14. In this case, it is recommended to use MPEG-2 audio (13818-1) recommended by MPEG of the International Organization for Standardization (ISO / IEC).

The distributed video recovery unit 9 restores the received compressed video data transmitted from the distributed media demultiplexer 3 and delivers the received compressed video data to the video / audio input / output unit 14. In this case, it is preferable to use MPEG-2 video (13818-2) recommended by MPEG of the International Organization for Standardization (ISO / IEC).

The distributed service processor 10 exchanges control signals used for a distributed or search service with the communication network connection unit 1 and processes them. These distributed service control signals include media flow control, media output time and output position control, and application downloading control.

The session processing unit 11 exchanges signals for controlling sessions of various communication services with the communication network connection unit 1 and processes them. The session control signals are signals that are in charge of session establishment and management processing for a terminal device, a video server, and various databases and services.

The call connection processing unit 12 exchanges signals for call connection control of various communication services with the communication network connection unit 1 and processes them. The call connection control signals are signals that are in charge of connection processing by call processing for service between a terminal device and a terminal device, or a service between the terminal device and a video server or various databases.

The system control unit 13 exchanges control signals with the distributed service processing unit 10, the session processing unit 11, and the call connection processing unit 12, and controls the operation of each of these devices. In addition, the system control unit 13 performs an interface with the user, information management, etc. while controlling and controlling the entire terminal device.

The video / audio input / output unit 14 outputs the video and audio data restored by the distributed or interactive video audio compression and decompression units 6 and 7, or compresses and restores the input audio video data received from a microphone or a camera. It is in charge of delivering to departments 6 and 7. Further, the distributed audio video restoration units 8 and 9 output the restored audio audio video data.

2 is a block diagram of an embodiment of the video / audio input / output unit of FIG.

As shown in FIG. 2, the video / audio input / output unit of FIG. 1 includes a video merge unit 21, a video output unit 22, a video A / D converter 23, and an audio D / A converter 23. As shown in FIG. ) And an audio A / D converter 25.

The video / audio input / output unit 14 includes a video input / output unit including a video A / D converter 23, a video output unit 22, and a video merger 21, and an audio input / output unit 24 and 25 which is responsible for inputting and outputting audio. It is composed of

The video A / D converter 23 converts the video analog signal inputted from the camera into digital and transfers it to the interactive video compression and decompression unit 7 and the video merge unit 21. The reconstructed video signals transmitted from the interactive video compression and decompression unit 7 and the distributed video decompression unit 9 and the video signals input from the video A / D converter 23 are one from the video merge unit 21. The video signal, which is appropriately expressed on the screen of, is output through a TV (TV) or a computer monitor via the video output unit 22. Two or more video signals may be displayed on one screen by a PIP function of the video merger 21.

On the other hand, the audio signal input to the microphone is converted to digital in the audio A / D converter 25 and transmitted to the interactive audio compression and decompression unit 6, the interactive audio compression and decompression unit 6 and the distributed audio compression And an analog signal converted by the audio A / D converter 24 restored by the recovery unit 8 and output to two speakers. An external video / audio input / output device means a TV, a camera, a speaker, a microphone, and the like, and a communication network means various physical media for communication.

As described above, the present invention provides a combination of devices for two-way interactive communication service and devices for one-way distributed communication service, such as video conferencing, video telephony, video on demand, multimedia search, and remote collaboration. By allowing communication services to be simultaneously accommodated at a low cost, there is an effect that can effectively contribute to disseminating various communication services in the multimedia era.

Although the technical idea of the present invention has been described in detail according to the above preferred embodiment, it should be noted that the above-described embodiment is for the purpose of description and not of limitation. In addition, those skilled in the art will understand that various embodiments are possible within the scope of the technical idea of the present invention.

Claims (2)

A multimedia terminal apparatus for integrating and providing various multimedia communication services, comprising: communication network connection means for extracting and outputting user data from received data transmitted from an external communication network, and receiving and transmitting transmission data to an external communication network; Interactive media multiplexing means for demultiplexing the media stream delivered through the network connection means and multiplexing the media for the delivered interactive service; Distributed media demultiplexing means for demultiplexing a media stream for distributed services delivered through said network connection means; Interactive service processing means for transmitting, to the interactive media multiplexing means, service control information for transmitting to an external communication network according to the interactive service control signal transmitted from the interactive media multiplexing means; Data processing means for transmitting text data in the interactive multiplexing frame transmitted from the interactive media multiplexing means to the outside; Interactive audio compression and decompression means for compressing audio for an interactive service delivered from the outside and delivering it to the interactive media multiplexing means, and for restoring audio for the interactive service delivered from the interactive media multiplexing means; Interactive audio compression and decompression means for compressing a video for an interactive service delivered from the outside and delivering the video to the interactive media multiplexing means, and for restoring a video of the interactive service delivered from the interactive media multiplexing means; Distributed audio recovery means for recovering received compressed audio data transmitted from the distributed media demultiplexing means; Distributed audio recovery means for recovering received compressed video data delivered from the distributed media demultiplexing means; Distributed service processing means for providing, to the communication network connection means, service control information necessary for communication with the outside in accordance with the distributed service control signal transmitted through the communication network connection means; Session processing means for performing session connection with the outside in accordance with session control signals of various communication services transmitted through the communication network access means; Super connection processing means for making a call connection with the outside according to call connection control signals of various communication services transmitted through the communication network connection means; System control means for controlling said distributed service processing means, said session processing means and said call connection processing means; And outputting the distributed audio and the distributed video inputted from the distributed audio recovery means and the distributed video recovery means to the outside, and compressing the interactive audio and the interactive video input from the outside, respectively. And transmitting the interactive audio and the interactive video inputted from the interactive audio compression and decompression means and the interactive video compression and decompression means to the outside. Multimedia terminal device comprising a video / audio input means. The apparatus of claim 1, wherein the video / audio input / output means comprises: video analog / digital conversion means for converting an analog video signal input from the outside into a digital signal and transferring the converted video signal to the interactive video compression and decompression means; Video merging means for merging the video signals transmitted from said interactive video compression and decompression means and said distributed video decompression means and a video signal input from said analog / digital conversion means; A video output unit which outputs the video signal merged by the video merging means to the outside; Audio analog / digital conversion means for converting an audio signal of an analog form input from the outside into a digital signal and transferring the converted audio signal to the interactive audio compression and recovery means; And audio digital / analog conversion means for converting the digital audio signal transmitted from the interactive audio compression and decompression means and the distributed audio decompression means into an analog signal and outputting the analog signal to the outside.