KR20020058185A - A photograph telephone - Google Patents

Abstract

PURPOSE: An image-using telephone set usable by an auditorily handicapped person is provided to transmit only data of video signals, when a button for auditorily handicapped persons is installed in a predetermined part of the telephone set and pressed, so as to transmit an image more rapidly and prevent the distortion of the image. CONSTITUTION: A telephone set to which a terminal diagram using an H.324 protocol is applied is connected to a monitor of a TV, and enables image communication through the connected TV monitor. In the telephone set, a video input and output unit(500) receives video input/output signals from an external. A video codec unit(520) encodes and decodes data of the video signals compressed from the video input and output unit. A modem(modulation-demodulation) unit(540) modulates and demodulates the data of the video signals from the video codec unit. And a network unit(560) is connected to the modem unit with a general public line.

Description

Telephone using image available for the hearing impaired {A PHOTOGRAPH TELEPHONE}

The present invention relates to a telephone using an image available to the hearing impaired. More specifically, the present invention relates to a technology for enabling a general telephone as well as hearing impaired persons to communicate with the other party through video by adding a video function to a general telephone.

The main function of the general telephone is to have the function of receiving the caller's voice or sending the receiver's voice to the caller through the handset and handset connected to the telephone.

However, due to the rapid development of communication technology, a video telephone device capable of making a call while watching each other with each other through video is added and developed by adding a video function to an existing telephone. Such video telephones not only process audio data but also image data simultaneously.

1 is a diagram illustrating a terminal diagram using an H.324 protocol applied to a conventional video telephone.

Looking at the configuration of the H.324 protocol shown in Figure 1, the system controller 10 for overall control of the system of the video telephone, and the H.245 protocol to generate and process the control data by transmitting and receiving with the system controller 10 An operating control protocol 12, a retransmission protocol 14 which detects an error of signal data from the control protocol 12, retransmits wrong signal data, and receives input / output data of an external voice signal. An audio input / output unit 16, an audio codec unit 18 for encoding and decoding audio signal data from the audio input / output unit 16, and a video input / output unit for receiving input / output data of an image signal from an external source. 20, a video codec unit 22 for encoding and decoding video signal data from the video input / output unit 20, the retransmission protocol 14, and the audio module. First, second, and third adaptation layers 24a, 24b, 24c serving as relays for transmitting respective signal, audio, and video data from the codec unit 18 and the video codec unit 22; And a multiplexing / demultiplexing unit 26 for multiplexing and demultiplexing each data transmitted from the first, second, and third adapter layers 24a, 24b, and 24c. And a modem 28 for demodulating and demodulating the demultiplexed video and audio signal data, and a network 30 connected to the modem 28 by a general public line.

According to the video telephone using the international standard H.324 protocol for video communication configured as described above, since not only the video data but also the audio data and the signal data are transmitted together, the signals are multiplexed and demultiplexed and transmitted through the other party's modem. Done.

However, when the transmission speed is slowed, the amount of image data is reduced by that much, causing the image to break.

That is, in the case of H.324, the audio data and the signal data are fixed regardless of the transmission speed, whereas the image data is variable according to the transmission speed, causing the image to be broken during transmission.

Accordingly, an object of the present invention is to solve the above problems, and an object of the present invention is to install a button for the hearing impaired at a predetermined portion of the telephone to transmit an image speed faster by transmitting only data of an image signal when the button is pressed. SUMMARY OF THE INVENTION An object of the present invention is to provide a telephone using an image that can be used by a deaf person to prevent the image from being broken.

As a technical idea for achieving the above object of the present invention

A terminal diagram using the H.324 protocol is applied, and a telephone connected to a TV monitor and capable of a video call through the monitor,

A video input / output means for receiving an input / output signal of an image from the outside;

Video codec means for encoding and decoding data of a video signal compressed from said video input / output means;

Modulation and demodulation means for demodulating and demodulating data of an image signal from the video codec means;

Provided is a telephone using an image usable by a hearing impaired person comprising a network means connected to the demodulation and demodulation means and a general public line.

1 is a diagram illustrating a terminal diagram using an H.324 protocol applied to a conventional video telephone.

2 is a view showing the overall system of the telephone using the image available to the hearing impaired according to the present invention.

3 is a diagram illustrating a terminal diagram using an H.324 protocol applied to a telephone using an image according to the present invention.

Figure 4 is a schematic diagram of the use of the telephone using the image available to the hearing impaired in accordance with the present invention.

<Description of the symbols for the main parts of the drawings>

100: camera unit 120: NTSC decoder unit

140: image pre-processor unit 160: video encoder unit

180: video transmission buffer unit 200: multiplexing unit

220: modem 300: voice coding and decoding unit

320: demultiplexing unit 340: video receiving buffer unit

360: video decoder 380: image post-processor

400: NTSC encoder 420: monitor

500: video input / output unit 520: video codec unit

540: modem 560: network

600: light emitting unit 620: jack connection

640: button for the deaf 660: CCD camera

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

2 is a system showing the overall flow of the telephone using the image available to the hearing impaired according to the present invention.

2, a camera unit 100 for acquiring an image signal from the outside, an NTSC decoder unit 120 for decoding an NTSC video signal from the camera unit 100, and the NTSC decoder unit 120 An image pre-processor unit 140 for pre-processing the Y, U, and V video signals output from the video signal, a video encoder unit 160 for compressing the pre-processed image to conform to an image compression standard, and the video encoder 160. Video transmission buffer 180 for buffering the compressed video signal from the multiplexer, a multiplexer 200 for multiplexing the data of the compressed video signal, and multiplexed video signal data from the multiplexer 200 It consists of a modem 220 for transmitting the modulation, demodulation.

In addition, the voice coding and decoding unit 300 for encoding and decoding the data of the voice signal input from the microphone-phone, and the audio signal and the video signal transmitted from the voice coding and decoding unit 300 and the modem 220 A demultiplexing unit 320 for demultiplexing the data of the data, a video receiving buffer unit 340 for buffering data of the demultiplexed video signal from the demultiplexing unit 320, and the video receiving buffer unit 340 A video decoder 360 for decoding the video signal data from the video signal, an image post-processor unit 380 for post-processing the data of the video signal reconstructed from the video decoder 360, and data of the video signal by NTSC. NTSC encoder 400 for compressing the video signal, and a monitor 420 for outputting the video signal from the NTSC encoder 400 to the screen.

Next, the overall operation of the telephone using the image available to the hearing impaired will be described.

First, QCIF (Quarter CIF; 1/4 CIF) and CIF (Common Intermediate Format) are received through the image pre-processor unit 140 by receiving the image signals of Y, U, and V lines input from the NTSC decoder unit 120. Intermediate format).

At this time, the converted image is compressed by the video encoder 160 in accordance with an image compression standard, and the compressed bit stream signal is transmitted to the video transmission buffer unit 180.

On the other hand, the voice signal received through the microphone is input by being compressed by the voice coding and decoder unit 300 that is external. The data of the compressed video signal and the audio signal are processed by the multiplexing unit 180 implemented in software in a reduced instruction set computer (RISC), and the data signal is transferred to the modem 220 to the other modem. Send it.

On the contrary, the video signal data input through the modem 220 is divided into the compressed data of the video signal and the audio signal by the demultiplexing unit 320, and the compressed data of the video signal is the video decoder through the video receiving buffer unit 340. The image is restored to the unit 360.

At this time, the data of the restored video signal is displayed on the monitor 420 of the general TV via the image post-processor unit 380 and the external NTSC encoder unit 400.

3 is a diagram illustrating a terminal diagram using the H.324 protocol applied to a telephone using an image according to the present invention.

Referring to FIG. 3, the video input / output unit 500 that receives an image input / output signal from the outside, a video codec unit 520 that encodes and decodes the data of the compressed video signal from the video input / output unit 500, And a modem 540 for demodulating and demodulating the video signal data from the video codec unit 520 and a network 560 connected to the modem 540 by a general public line.

As described above, in the conventional video telephone using the H.324 protocol, a series of processes for multiplexing and demultiplexing the data of the audio signal, the signal data and the data of the video signal are included, but in the present invention, multiplexing and demultiplexing are performed. By omitting the process of transmitting the data of the video signal, it is possible to receive faster and clearer image data than in the prior art, and to prevent the phenomenon of breaking the generated image when the transmission speed is slow.

Figure 4 is a schematic diagram of the use of the telephone using the image available to the hearing impaired in accordance with the present invention.

As shown in Figure 4, by installing the light emitting unit 600 in a predetermined portion of the phone when the call comes through the ringing sound and the flashing lamp so that not only the general public but also hearing impaired people can recognize that the call.

At this time, the image of the user is displayed through the TV monitor of the other party by the image transmission captured by the CCD camera 660 installed in the telephone. Of course, the operation of transmitting the image is as shown in Figs.

In addition, the present invention is provided with a connection portion 620 of the RCA jack (JACK) in a predetermined portion of the phone, and the connection portion 620 of the jack is connected to the TV enables communication using sign language through the monitor.

In addition, the hearing impaired by transmitting only the data of the video signal by pressing the button for the hearing impaired button 640 installed at a predetermined position of the phone can be faster to prevent the image from being broken.

As described above, according to the telephone using the image available to the hearing impaired according to the present invention has the following advantages.

First, the general public can make a video call while looking at the other party's face using the TV monitor connected to the telephone, and the hearing impaired person can also communicate with each other through a sign language with the TV monitor connected to the RCA jack of the telephone. can do.

Second, there is a surveillance function that is not in the ordinary phone, you can see the situation of the house by connecting video from the outside.

Third, hearing impaired persons can transmit the data of the video signal only by pressing a button for the hearing impaired installed at a predetermined position of the phone, thereby preventing the image from being broken by making the image speed faster.

Claims (2)

A terminal diagram using the H.324 protocol is applied, and a telephone connected to a TV monitor and capable of a video call through the monitor, A video input / output means for receiving an input / output signal of an image from the outside; Video codec means for encoding and decoding data of a video signal compressed from said video input / output means; Modulation and demodulation means for demodulating and demodulating data of an image signal from the video codec means; A telephone using an image available to the hearing impaired, comprising a network means connected to the modulation and demodulation means and a general public line. The telephone set according to claim 1, wherein a button for the deaf is installed at a predetermined position of the telephone to transmit only data of a video signal when the button is pressed.