KR20000043101A - Videophone communication system with document transmission and reception function and display function - Google Patents

Abstract

PURPOSE: A videophone communication system with a document transmission and reception function and a display function is provided to display or edit video data and document data on one screen. CONSTITUTION: A videophone communication system with a document transmission and reception function and a display function comprises a modem(111), a packet processing portion(108), a video codec(103), a video signal processing portion(109), an audio codec(107), an audio signal processing portion(106), and a system control portion(115). The modem transmits and receives voice data, video data, and document data through a telephone line. The packet processing portion composes the voice data, the video data, and the document data as packet data and recovers the received packet data to an original status. The video codec codes and decodes the video/document data. The video signal processing portion processes the decoded video/document data. The audio codec codes and decodes the voice data. The audio signal processing portion processes decoded audio signal. The system control portion controls a storage mode and an edition mode of the document data and controls transmission and reception operations of composed blocks according to a transmission/reception mode.

Description

Video telephony device with document sending / receiving and display function

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video telephony communication apparatus, and more particularly, to display images and documents on one screen in accordance with transmission / reception of document data created by a personal computer in a video telephony communication system, and to display document contents displayed between the senders and receivers. A video telephony communication apparatus having document transmission / reception and display functions for controlling direct editing.

In general, a video telephone transmits video data of a sender photographed by a camera on the transmitting side and audio data through a transmitter through a modem, demodulates video data and audio data received by the modem on the receiving side, and the video signal processing means. And after receiving the signal through the audio signal processing means, the image signal of the sender is displayed on the monitor, and the audio signal is output through the speaker to make a voice call while watching the video of the other party.

However, in the case of video conferencing using a video telephone, it is common to conduct a meeting while referring to not only the appearance of the other party but also data such as a document. However, the video telephone according to the related art is simply a caller in the case of a video. There was a problem in that it is not possible to transmit and receive document data and the like as well as display the image signal photographed on the monitor, and execute a video phone call, and display these documents together with the caller's image through the screen.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, in order to solve the above problems, not only image data but also document data created by a personal computer can be simultaneously transmitted in a video telephony communication system. The present invention provides a video telephony communication apparatus having document transmission / reception and display functions that display together on one screen and control the editing of the displayed document contents directly between the transceivers.

1 is a block diagram of a video telephone communication apparatus having a document transmission / reception and display function according to the present invention.

FIG. 2 shows an image and document display area on the monitor shown in FIG.

In order to achieve the above technical problem, a video telephone communication apparatus having a document transmission / reception and display function according to the present invention is a modem for performing modulation / demodulation to transmit / receive voice data, image data and document data through a telephone line. And a packet data capable of transmitting voice, image, and document data transmitted through a predetermined protocol connected to the modem, and recovering the received packet data to a state before packet processing to separate and output each data. A packet processing unit, connected to the packet processing unit, performs signal processing on a video codec for encoding / decoding the image / document data, and image / document data decoded by the video codec, and transmits them to an area separated by a predetermined standard of the monitor. To edit and display the receiver's image and document signals simultaneously on one screen A video signal processing unit connected to the packet processing unit, an audio codec for encoding / decoding the voice data, and a decoded audio signal output from the audio codec to be output through a speaker and input from a microphone. An audio signal processor for amplifying a signal and converting the signal into a digital signal, and controlling a storage and editing mode of the document data, and a system controller for controlling transmission and reception of the component block according to a transmission / reception mode. It is done.

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

As shown in Fig. 1, a video telephone communication apparatus having document transmission / reception and display functions according to the present invention includes a camera 101, an A / D converter 102, a video codec 103, a microphone 104. , Speaker 105, audio signal processor 106, audio codec 107, packet processor 108, video signal processor 109, monitor 110, modem 111, PC interface 112, personal computer 113, the printer 114, the system control part 115, the input means 116, and the memory 117 are provided.

First, the transmission operation of the video call apparatus on the transmission side will be described.

When the user inputs the telephone number to set the video call mode and executes the video telephone call through the input means 116, the system controller 115 controls the modem 111 to attempt to dial the counterpart phone number.

If the call is successful, the system control unit 115 controls the camera 101 to switch to the shooting mode to capture the talker.

Then, the image signal of the talker photographed by the camera 101 is converted into a digital image signal via the A / D converter 102, encoded by the video codec 103, and output to the packet processor 108. FIG.

In addition, the audio signal of the talker input through the microphone 104 is subjected to audio signal processing such as amplification and noise removal in the audio signal processing unit 106, and the analog voice signal is converted into a digital voice signal.

Then, it is encoded by the audio codec 107 and then output to the packet processing unit 108.

Then, the packet processing unit 108 inputs the encoded image signal and the audio signal input from the video codec 103 and the audio codec 107, and predetermined communication is set so that the receiving side can separate the image signal and the audio signal. Configure the packet data that can be transmitted through the protocol.

Then, after modulating the packet data so that the modem 111 can transmit it via the telephone line, it is transmitted to the receiving side via the telephone line.

A picture signal of a talker input from the video codec 103 is converted into an analog signal by decoding and D / A conversion by the video signal processor 109 together with the picture signal and audio signal transmission of the talker. The magnetic image display area 21 of the monitor 110 as shown is displayed.

Secondly, the reception operation of the video call apparatus at the reception side will be described.

The image data and audio data transmitted from the other party's caller side are demodulated through the modem 111, and then the packet data received by the packet processing unit 108 is restored to the state before packet processing, and then the image data and audio data are separated. To the video codec 103 and the audio codec 107, respectively.

The encoded image data is decoded by the video codec 103, and then converted into an analog image signal by D / A conversion by the video signal processing unit 109, so that the relative image of the monitor 110 as shown in FIG. The display area 22 is displayed.

The encoded speech data is decoded by the audio codec 107 and then converted into an analog speech signal by D / A conversion through the audio signal processing unit 109, amplified and then output to the speaker 105. .

By such an operation, a video call with the other party can be performed while watching the caller and the callee through the monitor 110.

In addition, a case where a video call is to be made while referring to a document created by a personal computer during the video call will be described.

First, a file of a document to be transmitted is set through the personal computer 113, and then connected to the PC interface 112 through the serial port to match the data standard, and then selected in the memory 117. Download file data of document.

Then, the file data of the document stored in the memory 117 is signal-processed by the graphic processing block in the video signal processing unit 109, and then the document content is displayed in the document content display area 23 of the monitor shown in FIG. Display.

Then, the file data of the document stored in the memory 117 is composed of packet data through the packet processing unit 108, and then modulated by the modem 111, and then transmitted to the other modem through the telephone line.

Then, the receiving side demodulates the document data by the modem 111 and then temporarily stores the document data in the memory 117. Next, these document data are read out and signal processed by the graphic processing block in the video signal processing unit 109, and then the document content is displayed in the document content display area 23 of the monitor shown in FIG.

Accordingly, the monitor 110 on the sending / receiving side displays not only the sender / receiver image but also the selected document contents.

It is also possible to edit documents mutually while the document contents are displayed on the monitor 110. That is, when the mutual change function mode is set through the input means 116 when the contents of the displayed document are to be edited, when the document is modified on one side of the caller, the information on the counterpart is transmitted through the modem 111. The content of the document transmitted to and displayed on the monitor 110 of the counterpart is also modified.

Document information completed through call and document correction is selected through the printer 114 by selecting the print function on the menu through the input means 116. In addition, when the data is to be stored in the memory of the personal computer 113, the edited file data may be stored in the memory of the personal computer 113 through the serial port of the PC interface 112. FIG.

By the above operation, in the video call apparatus, it is possible to make a call while viewing not only the image of the sender / receiver but also the document information through the monitor. In addition, it is possible to edit the contents of the documents displayed mutually, which makes video calls more efficient.

As described above, according to the present invention, it is possible to transmit and receive not only image data but also document data created by a personal computer at the same time in a video telephone communication system, and display the transmitted and received document data together with the image data on one screen, By controlling the content of the document displayed in the direct editing, it is possible to make a call while mutually reviewing the document in a video conference, thereby improving the function of the video call.

Claims (2)

A modem for performing modulation / demodulation to transmit / receive voice data, image data and document data over a telephone line; It is connected to the modem, and composed of packet data which can transmit the transmitted voice, image, and document data through a predetermined protocol, and the received packet data is restored to the state before packet processing, and a packet for separating and outputting each data. Processing unit; A video codec connected to the packet processing unit to encode / decode the image / document data; A video signal processor for signal-processing the image / document data decoded by the video codec, and simultaneously editing and displaying the image signal and the document signal of the sender / receiver on a single screen in areas separated by a predetermined standard of the monitor; An audio codec connected to the packet processor to encode / decode the voice data; An audio signal processor for processing a decoded voice signal output from the audio codec and outputting the same through a speaker, amplifying an audio signal input from a microphone, and converting the audio signal into a digital signal; And And a system controller for controlling the storing and editing mode of the document data, and controlling a transmission / reception operation of the component block according to a transmission / reception mode. . The document sending / receiving and displaying function according to claim 1, wherein the system control unit further includes a function of controlling the document contents displayed on the monitor to be edited between the sender and the receiver in the document editing mode. And a video telephony communication device.