KR100361217B1 - Phone system using compressed image and voice data and method thereof on network - Google Patents

Abstract

The present invention relates to a video telephone with a monitor for outputting video and a server system for processing video and audio.

The present invention has been invented to accommodate a conventional conventional telephone as a receiving telephone and to perform voice communication while watching a video transmitted from a server at the sender.

The video output from the transmitting side compresses the image data stored in the server system, and delivers the image data to the transmitting side. The transmitting side can decode the image data and output the same to the monitor.

There is digital data coming and going between the server system and the sending telephone, which is produced by compression at both ends and contains audio and video data.

Meanwhile, when the transmitting telephone is collectively referred to as a video telephone, the present invention shows a detailed structure of the video telephone, and the principle of operation in the video telephone can be seen.

Description

Video voice phone system and communication method thereof {Phone system using compressed image and voice data and method according to network}

In the present invention, it was invented to be applicable to a general telephone network or the Internet, and it is possible to change the structure of a modem.

The present invention reduces the traffic on the network by compressing and encoding the data between the server system and the sending telephone.

The present invention can be applied to a conventional telephone system for voice communication without difficulty.

According to the present invention, it is possible for the sender telephone user to access the server system and to view video data transmitted from the server system while talking freely with the receiver by voice.

The present invention compresses the video data stored in the server system and sends it to the sender's phone, and the sender's phone sends the audio data to the receiver to decode the server system and delivers it to the receiver. The system compresses and encodes the voice data to the sender. The present invention relates to a video telephone, which is a series of voice and video communication systems, a transmitter telephone, and a voice video communication method performed in the audio and video system.

The present invention provides a video and audio using a network, the sender user can be connected to the server system by connecting through a network such as a general telephone network or the Internet, and the voice call with the receiver telephone user while receiving the video service from the server system The present invention relates to a video voice telephone system and a method for compressing video and audio.

In the current video and audio system, the other party must also have a video phone to enable two-way video and audio communication, or when either one is a general phone, there is no video data. You can see the video stored in the server system.

Conventional technologies include support for multi-party video conferencing over the Internet, virtual conference rooms where remote participants hold video conferencing, live internet broadcasting, tele-learning, remote interviews and employment, and multimedia language labs. System, etc.

The conventional video and audio system has a drawback that a monitor cannot be used because two-way video and voice communication is possible only when the other party is equipped with a video phone or when there is no video data in the case of a general phone.

In addition, the data volume of video and audio data tends to be too large for the network.

According to the present invention, when a counterpart is a general telephone, a person having a video telephone can receive an image from a server system and view an image stored in the server system. In addition, by compressing and transmitting video and audio data, it is possible to reduce the load on the network.

As a technical idea for achieving the object of the present invention, a video voice telephone system can be used in the Internet or a general telephone network, and is provided with compression encoding and decoding equipment for video and audio that can be transmitted over a network, and then transmitted to a video telephone. Can view the stored video data in the server system and make voice calls with the receiving telephone.

1 is an overall conceptual diagram of the present invention.

2 is a block diagram of a server system of the present invention.

3 is a structural diagram of a video telephone of the present invention.

4 is a flowchart of a video voice telephone communication method.

<Description of Major Symbols in Drawing>

100: server system 110: video voice processing system

120: general telephone processing system 130: calling telephone or video telephone

140: monitor 150: receiving telephone

210: Modem 220: Video I / O Port

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

1 is an overall conceptual diagram of the present invention.

As shown in FIG. 1,

In a communication system for compressing and providing video and audio data over a network,

A sender's phone 130, in which the sender makes a call to a server system through a network and inputs a desired receiver's phone number;

A server system 100 connecting the transmitting telephone 130 and the receiving telephone 150;

It can be seen that the video phone system consisting of the receiving telephone 150 receives the voice transmitted from the server system 100.

The data compression method uses a compression method such as G.711 or G.723.1 or the like for general audio, and the video adopts a compression method such as MPEG or the like.

The transmitting telephone 130 is equipped with a monitor 140 for decoding and outputting an image transmitted from the server system 100.

The server system 100 includes a video and audio processing system 110 and a general telephone processing system 120.

The video and audio processing system 110 collectively is responsible for communicating with the transmitting telephone 130, and is responsible for communicating with the transmitting telephone by compressing video and audio, which will be described in detail in the description of the server system.

The general telephone processing system 120 is in charge of communicating with the receiving telephone 150, converts the voice signal from the receiving side into digital voice data, compresses and encodes it, and transmits it to the transmitting telephone, and vice versa. Decodes and decompresses the voice digital data transmitted from the voice signal, converts the voice digital data into a voice signal, and delivers the voice signal to the receiving telephone 150.

A block diagram of the server system 100 is shown in FIG.

As shown in Figure 2, the server system 100,

Modem 210 for receiving the voice transmitted from the calling telephone 130,

An image input / output port 220 for sending data decoded from the decoder 240 to an external display device (TV, monitor, etc.) or receiving data generated from an external input device (camcorder, etc.);

Voice input and output port 230 that can receive or send voice data from the outside,

An image encoder / decoder 240 that encodes and decompresses the image data, and decodes the image data;

A memory 245 used as a buffer for encoding / decoding video data,

An image storage device 250 storing image data;

A speech encoder / decoder 260 that encodes and decompresses speech data and compresses speech data;

A telephone line switching circuit 270 which generates a signal to the telephone line and transmits a signal on the receiving side to the server system;

A ROM 280 having a control program for operating a server system;

The digital signal transmitted from the voice decoder is converted into an analog voice signal to the handset 270, and the analog voice signal generated from the handset 270 is digitally converted to the A / D 290, which is an analog digital converter for transmitting to the voice encoder. consist of.

The network described above is an example of using a general telephone network, and TCP / IP can be applied instead of the general telephone network, and thus the Internet can be used.

At this time, it should be noted that when applying the Internet, the circuit of the modem 210 can be modified to match the TCP / IP protocol.

The image storage device 250 may have various images as an image that can be viewed by the user of the transmitting telephone.

The image data of the image storage device may be compressed and stored as digital data, or may be stored uncompressed. When the image data is transmitted to the transmitting telephone, the image data is compressed through the image encoder.

The transmitting telephone 130 may be referred to as a video telephone.

3 is a structural diagram of the video telephone 130. As shown in FIG.

As shown in Figure 3,

In a communication system for compressing and providing video and audio data over a network,

Make a phone call to the server system 100 and transmit the compressed audio data, and receive the video data and audio data transmitted from the server system 100 and transmits to the video decoder 330 and the audio encoder / decoder 340, respectively ( 310),

A monitor 140 for decoding and outputting an image transmitted from the server system 100,

An image decoder 330 for decoding the image data transmitted from the modem 310 and outputting the decoded image data to the monitor 140;

A memory 335 used as a buffer to decompress and decompress the compressed image data in the image decoder 330 and output it to a monitor;

Decodes the voice data transmitted from the modem 310 to the A / D (360) and compresses the voice signal from the A / D (360) to send to the server system 100 through the modem (310) Encoder / decoder 340,

ROM 350 in which an operating program inside the video telephone is embedded,

The analog signal transmitted from the voice encoder / decoder 340 is converted into an analog signal and transmitted to the handset 370, and the analog digital signal generated from the handset is converted into a digital voice signal and transmitted to the voice encoder / decoder 340. A video telephone composed of A / D 36 as a signal converter is shown.

Of course, the network may be applied to a general telephone network or TCP / IP like a server system.

When applying the Internet as a network, the circuit of the modem 310 should be able to be modified to fit the TCP / IP protocol.

The role of the modem 310 is to actually use a general telephone line and the circuit of the modem is to make a call to the server system and deliver compressed voice and to receive a voice signal and a video signal from the server system 100. It is sent to voice decoder and video decoder, respectively, and as mentioned above, to be applied to the Internet, it is necessary to modify it for TCP / IP.

The data compression method may use a general voice G.711 or G.723.1 or similar compression scheme.

The video may adopt MPEG or the like compression method.

The memory 335 is used as a buffer when the image decoder decodes the compressed image and outputs it to the monitor.

4 is a flowchart of a video voice telephone communication method.

As shown in Figure 4,

In the method for compressing and providing video and audio data using a network,

A transmission server connection step 410 for making a telephone call from the transmission telephone 130 to the server system 100;

A receiving side connection step 420 for inputting a receiving telephone number from the transmitting telephone 130 connected to the server and connecting the receiving telephone 150 to the receiving telephone;

An image transmission step 430 of transmitting image data stored in the server to the transmitting telephone 130 in the server system 100;

An image output step 440 for decoding the image data transmitted from the server system 100 and outputting the decoded image data to a monitor;

A voice call step 450 for allowing the receiving telephone 150 and the transmitting telephone 130 to simultaneously communicate with each other simultaneously with the image output step 440;

The video and voice communication method comprising the disconnection step 460 of disconnecting the sender or the receiver and stopping the video data transmitted to the sender's phone 130 when the calling party or the calling party hangs up after the call. This is shown.

If the network is a general telephone network, a call is made from the calling telephone to the server system and the desired receiving telephone number is entered. On the Internet, the desired server address is entered and the receiving telephone number is entered.

The server system connects the currently connected sender's telephone to the receiver's telephone and sends the video stored in the server system to the sender's videophone.

The transmitting videophone decodes the image transmitted from the server system, outputs it to the monitor, and delivers the voice so that it can talk to the receiving telephone.

When the sending or receiving telephone hangs up after the call, the server system stops the video sent to the sending telephone and disconnects the calling telephone and the receiving telephone.

With the above flow, a session is established between the calling telephone and the receiving telephone, and after the call, the session is stopped and the telephone connection is released.

In this way, the server system can send various kinds of images to the video telephone, and the sending video telephone is talking to the receiving telephone while watching the video.

In the above, a voice analog signal is used between the receiving telephone and the server system, and data obtained by compressing voice and video digital data is used between the transmitting telephone and the server system.

Therefore, the present invention can be used as a video voice telephone system in the Internet or a general telephone network, and is equipped with a compression encoding and decoding device for video and audio, and sends it to a video telephone so that the sender can view various stored video data in the server system. Voice calls were made with the receiving telephone.

As described above, according to the present invention, when the counterpart is a general telephone, a person having a video telephone can receive an image from a server system and view an image stored in the server system.

In addition, by compressing and transmitting video and audio data, it is possible to reduce the load on the network.

According to the effects of the present invention, a video-voice telephone system can be used in the Internet or a general telephone network, and is provided with a compression encoding and decoding device for video and audio that can be transmitted over a network, and then transmitted to a video telephone. The stored video data can be viewed and voice calls can be made with the receiving telephone. Thus, the video phone can view any video data stored in the server system.

Claims (12)

In a communication system for compressing and providing video and audio data over a network, A transmitter for decoding and outputting an image transmitted from the server system, and having a sender's telephone 130 for calling the server system through the network and inputting a desired receiver's telephone number; A server system 100 which connects the transmitting telephone 130 and the receiving telephone 150 and delivers the image stored in the transmitting telephone 130 when a telephone is received from the transmitting telephone; Video-voice telephone system, characterized in that consisting of the receiving side telephone (150) receiving the voice transmitted from the server system (100). delete delete The method according to claim 1, The server system 100, The video and audio processing system 110, which compresses video and audio to communicate with the transmitting telephone, converts the audio signal from the receiving telephone into digital audio data, compresses it, and transmits it to the transmitting telephone. And a general telephone processing system (120) for decoding the digital audio data, converting the converted audio signal into a voice signal, and transmitting the same to a receiving telephone. The method according to claim 1, The server system 100, Modem 210 for receiving the voice transmitted from the calling telephone 130, An image input / output port 220 for sending image data to an external display device or receiving image data from an external input device (camcorder, etc.), A voice input / output port 230 capable of sending or receiving voice data from the outside, An image encoder / decoder 240 that encodes and decompresses the image data, and decodes the image data; A memory 245 used as a buffer for encoding / decoding video data, An image storage device 250 storing image data; A speech encoder / decoder 260 that encodes and decompresses speech data and compresses speech data; A telephone line switching circuit 270 which generates a signal to the telephone line and transmits a signal on the receiving side to the server system; A ROM 280 having a control program for operating a server system; The digital signal transmitted from the voice decoder is converted into an analog voice signal to the handset 270, and the analog voice signal generated from the handset 270 is digitally converted to the A / D 290, which is an analog digital converter for transmitting to the voice encoder. Video voice telephone system, characterized in that made. delete 6. The video-voice telephone system according to claim 5, wherein when applying the Internet as a network, the circuit of the modem is modified to conform to the TCP / IP protocol. delete delete delete delete In the method for compressing and providing video and audio data using a network, A transmission server connection step 410 for making a telephone call from the transmission telephone 130 to the server system 100; A receiving side connection step 420 for inputting a receiving telephone number from the transmitting telephone 130 connected to the server and connecting the receiving telephone 150 to the receiving telephone; An image transmission step 430 of transmitting image data stored in the server to the transmitting telephone 130 in the server system 100; An image output step 440 for decoding the image data transmitted from the server system 100 and outputting the decoded image data to a monitor; A voice call step 450 for allowing the receiving telephone 150 and the transmitting telephone 130 to simultaneously communicate with each other simultaneously with the image output step 440; Characterized in that the server system disconnects (460) the connection from the sending or receiving side and stops the video data sent to the transmitting side telephone (130) when the calling or receiving telephone hangs up after the call. Video voice communication method.