KR19980016003A - Image broadcasting and conference system using telephone line - Google Patents

Abstract

The present invention relates to an image broadcast broadcasting and conference system using a telephone line, and more particularly, to a system and method for image broadcast and conference system using a telephone line, An image and audio compressing unit for AD converting the audio information into digital data and compressing and storing the digital data, and an image amplifying and distributing unit for outputting image and audio information received from the slave MPU through the monitor and audio output unit, and The control unit is connected to a control keypad for selecting and using various functions. The MPU is connected to a color CCD camera as a main image input device. The input image information and the voice information input through a microphone are A / D converted and digitalized The image and audio compressing unit for compressing and storing the compressed image data is transmitted from another slave MPU An image and audio amplifying unit for amplifying and distributing a signal so as to output image and audio information through a monitor and audio output unit, and connecting the main MPU and the subordinate MPU to a modem connected to a telephone line to establish a communication network, The present invention relates to an image broadcast broadcasting and conference system using a telephone line for multiplexing and transmitting a signal and an audio signal to enable remote conference or broadcast.

Description

Image broadcasting and conference system using telephone line

The present invention relates to an image broadcast broadcasting and conference system using a telephone line, and more particularly, to a system and method for image broadcast and conference system using a telephone line, An image and audio compressing unit for AD converting the audio information into digital data and compressing and storing the digital data, and an image amplifying and distributing unit for outputting image and audio information received from the slave MPU through the monitor and audio output unit, and The control unit is connected to a control keypad for selecting and using various functions. The MPU is connected to a color CCD camera as a main image input device. The input image information and the voice information input through a microphone are A / D converted and digitalized The image and audio compressing unit for compressing and storing the compressed image data is transmitted from another slave MPU An image and audio amplifying unit for amplifying and distributing a signal so as to output image and audio information through a monitor and audio output unit, and connecting the main MPU and the subordinate MPU to a modem connected to a telephone line to establish a communication network, The present invention relates to an image broadcast broadcasting and conference system using a telephone line for multiplexing and transmitting a signal and an audio signal to enable remote conference or broadcast.

As the industry becomes more sophisticated and the situation changes rapidly, many societies have to gather and make decisions at the same time in order to make decisions at the same time. This necessitates a waste of time and an enormous cost of holding meetings. In order to solve this problem, a system has been developed which multiplexes an image signal and an audio signal and transmits the multiplexed image signal and audio signal to allow remote conference or broadcast, but there is a drawback in that it is impossible to broadcast the image.

In addition, such a conventional system has a problem in that equipment and cost required for transmission and reception are enormous by using a method using an airwave that converts an image signal and a video signal into a very high frequency of several hundreds Khz and transmits or receives through an antenna.

In addition, a method of using an image signal and an audio signal using an optical cable has been developed and used, but there has also been a problem that a new optical cable is required to be constructed.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems, and its main object is to provide an image broadcast broadcasting and conference system using a telephone line that multiplexes an image signal and an audio signal and transmits the multiplexed image.

It is still another object of the present invention to provide a communication system and a method for realizing video conferencing and digital broadcasting in a voice frequency band (300 Hz to 3400 Hz) by constructing a communication network using a general telephone line, And to provide a broadcast and conference system.

According to an aspect of the present invention, there is provided a communication system including a main MPU (Main Processing Unit) connected to a main MPU and a plurality of MPUs connected to a modem connected to a telephone line, An image and audio compression unit for AD converting the input image information and audio information input through the microphone and digitizing the digital data, compressing and storing the digital data, and the image and audio information received from the slave MPU through a monitor and audio output unit An image and audio amplifying unit for amplifying and distributing a signal for outputting and a control keypad for selecting and using various functions are connected to the MPU, and video information input through a video camera and audio information inputted through a microphone are connected to the MPU, And compresses the digital data, and transmits the digital data to the image and audio compression unit and the other slave MPU Is to provide an image broadcasting and conferencing system using a telephone line, characterized by signal amplification and to distribute video and audio amplifier section connected to the output by way of a monitor and an audio output for image and audio information.

1 is a system overview diagram according to the present invention;

Figure 2 is a diagram of a communication network configuration of a system according to the present invention.

FIG. 3 is a diagram illustrating an information transmission diagram

Description of the Related Art [0002]

10a, 10b; Image and voice compression units 11a and 12b; Video camera

12a, 12b; Microphones 20a and 20b; The light-

21a, 21b; Lights 30a and 30b; The image /

31a, 31b; Monitors 32a, 32b; Audio output unit

40; The control keypads 50a, 50b, 50c ... 50n; modem

60; Telephone line 100; Main MPU

200; Species MPUVX; Image signal waveform section

AX; Voice signal waveform section CX; Control signal waveform section

MAN1, MAN2; Talker

DETAILED DESCRIPTION OF THE INVENTION Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a system overview diagram according to the present invention, FIG. 2 is a network construction diagram of a system according to the present invention, and FIG. 3 is an information transmission diagram applied to the present invention.

The MPU 200 includes a main MPU (Main Processing Unit) 100 and a plurality of slave MPUs 200. The MODEM 50a is connected to the telephone line 60, 50b, 50c, ..., 50n to establish a communication network. The video information input through the video camera 11a and the voice information input through the microphone 12a are AD-converted into the main MPU 100, And outputs the image and audio information received from the slave MPU 200 through the monitor 31a and the audio output unit 32a so that the image and audio compression unit 10a and the slave MPU 200 compression- And a control keypad 40 for selecting and using various functions are connected to the MPU 200. The MPU 200 is connected with the image information input through the video camera 11b and the microphone 12b ) To convert the audio information input through the A / The image and sound compressing unit 10b for compressing and storing the data and the image and sound information transmitted from the other slave MPU 200 can be outputted through the monitor 31b and the sound output unit 32b And an image and sound amplifying unit 30b for signal amplification and distribution are connected.

Illumination control units 20a and 20b capable of adjusting the lights 21a and 21b around the talkers MAN1 and MAN2 are provided in order to input high quality image information from the video cameras 11a and 11b in addition to the above- And may further be connected to the MPUs 100 and 200.

In the above-described configuration, the image and audio compression units 10a and 10b use a color CCD camera among the video cameras 11a and 11b as a main image input device, Compresses and stores the digital data, converts the voice information inputted through the microphones 12a and 12b to analog-digital conversion, digitizes the digital data, and compresses and stores the digital data.

At this time, high-performance DSP and MPEG2 are used to realize high-quality digital broadcasting.

The compressed and stored image and audio information is transmitted and received through the telephone line 60 connected to the MPUs 100 and 200 and the modems 50a, 50b, 50c, ..., 50n. Time Division method.

That is, FIG. 3 is a waveform diagram of the information transmission mode, and shows a waveform diagram along the time axis in the information transmission mode of the present invention.

In this case, it is possible to transmit the image and sound by making the time zone of the image signal waveform section VX and the voice signal waveform section AX different, and includes the control signal waveform section CX.

The image signal waveform section (VX), the voice signal waveform section (AX), and the control signal waveform section (CX) are combined to form one frame (FRAME) of one cycle.

By building a communication network using the telephone line 60 and using it in the voice frequency (300-3400 Hz) band, the communication network construction cost can be saved considerably compared to other communication systems.

At this time, the MPUs 100 and 200 use a Pentium class processor or a processor equal to or higher than that of the MPU 200 for processing data at high speed, and simultaneously transmit image and voice signals received from the respective MPUs 200 And includes a MUX function capable of performing separate processing.

In addition, the modems 50a, 50b, 50c, ..., 50n are provided for exclusive lines of 56 or 600 bps (bite per second) or more, and are capable of 2-wire and 4-wire, but 4-wire is preferable for improving reliability and quality.

The image and sound amplifying units 30a and 30b amplify the image and audio information received from the slave MPU 200 and obtain image quality and sound quality through the monitors 31a and 31b and the sound output units 32a and 32b .

In this case, in the main MPU 100, only one channel can be enlarged to the full screen by using a 16-channel simultaneous image display method using a 4 × 4 LCD large screen, And can be separated into 16 channels again.

And the slave MPU 200 monitors it by itself.

The control keypad 40 connected to the main MPU 100 can selectively use various functions. Various functions include a partner selecting function for selecting a video conference or a partner to broadcast, And the partner selecting function includes an individual selecting function for individually selecting one to one between the main MPU 100 and the slave MPU 200. The individual MPUs 200 are grouped by block in the main MPU 100 A block selection function that can select all the MPUs 200 at the same time from the main MPU 100, and a selection function that allows the individual to select only among the MPUs 200 of each kind.

At this time, the opponent selection function becomes available only after being selected through the main MPU 100.

When the image broadcasting and conference system using the telephone line as described above is used, video conferencing and broadcasting can be performed remotely even at a low installation cost of the communication network.

Although the above description has been given only for the image broadcast broadcasting and conference system using a telephone line, the present invention can be used in various ways such as monitoring of a CD corner or a traffic monitor of a bank or a credit union It can be used as a two-way remote training system which can connect the training centers of various branches in the company and transmit the image of the training instructor to the remote training center and furthermore can ask questions to the training instructor at the remote place. And transmits the image information and the voice information using the telephone line 60 connected to the modems 50a, 50b, 50c, ..., 50n.

As described above, according to the present invention, an image signal and an audio signal containing image information and audio information are multiplexed and then transmitted through a telephone line connected to the MPU and the modem, thereby enabling multi-party conference or broadcasting at a remote location, 300Hz-3400Hz), it is a very useful invention that can significantly reduce the cost of newly constructing an optical cable.

Claims (5)

A main MPU 100 and a plurality of slave MPUs 200 are connected to respective modems 50a, 50b, 50c ... 50n connected to a telephone line 60, An image and audio compressing unit 10a for digitizing and digitizing the image information input through the microphone 12a and the audio information input through the microphone 12a and compressing and storing the digital data and the image received from the slave MPU 200, An image and audio amplifying unit 30a for amplifying and distributing audio information so as to output audio information through the monitor 31a and the audio output unit 32a and a control keypad 40 for selectively using various functions are connected An image and audio compressing unit 10b for AD converting the digital video data input through the video camera 11b and the audio data input through the microphone 12b into digital data and compressing and storing the digital data, And the other kind MPU 200 And an image and audio amplifying unit (20b) for amplifying and distributing the image and audio information received through the monitor (31b) and the audio output unit (32b) so as to output the received image and audio information are connected to each other. And conference systems. The image processing apparatus according to claim 1, further comprising lighting control units (20a, 20b) for controlling the lights (21a, 21b) around the talkers (MAN1, MAN2) in the MPU Broadcasting and conference system. The system of claim 1, wherein the video camera (11a, 11b) uses a color CCD camera as a main image input device. The image broadcast and conference system according to claim 1, wherein the image and sound compressing units (10a, 10b) perform AD conversion using DSP and MPEG2. The system of claim 1, wherein the modems (50a, 50b, 50c ... 50n) are provided in a four-wire system.