JPH03162186A - Picture and sound data communication device for video telephone - Google Patents

Abstract

PURPOSE:To reduce the number of times of the signal conversion of picture data or sound data, and to receive the picture and the sound of high quality by a video telephone system at an opposite party side by sending a digitized picture signal and a digitized sound signal directly to a telephone circuit. CONSTITUTION:A system is constituted of the video telephone system 100, telephone sets 101, 106, a telephone network 102, a personal computer 103, a display 104, a storage device 105, and the picture and sound data communication device 200 for the video telephone, and the picture and sound data communication device 200 for the video telephone includes a circuit corresponding part 201, a PB signal receiving part 202, a PB signal sending part 203, an A/D conversion part 204, a D/A conversion part 205, a memory part 206, a control part 207, and an I/O part 208. Then, the data is stored as the data of the personal computer while the picture quality of the video telephone being kept as it is. Thus, the number of times of the conversion of the picture data is reduced, and the deterioration of the quality is reduced.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention connects a videophone and a personal computer (hereinafter referred to as a "personal computer"), and transmits image data and audio data in the computer to the videophone. The present invention relates to an image/audio data communication device for a videophone.

[Conventional technology]

In principle, a videophone is required to communicate with a videophone. However, if a computer can be used for videophone communication, image data and audio data stored on the computer can be sent to the videophone.
Database searches using videophone communication can be easily realized.

FIG. 2 is an example of using a personal computer for videophone communication using conventional technology. In the figure, 300 and 303 are videophones, 301 and 304 are telephones, 302 is a telephone network,
305 is a PB signal sending section, 306 is an NTSC-RGB signal converting section, 307 is a ROB-NTSC signal converting section, 30
8 is a personal computer, 309 is a display, 310 is a storage device, and 311 is a voice command device.

Communication between videophones 300 and 303 is normal videophone communication. In the case of human power to the computer, NTSC →
An RGB signal converter 306 converts the NTSC image signal for display on the videophone CRT into an RGB signal for a personal computer, and inputs the signal to the personal computer.

In the case of output from a personal computer, the PB signal sending section 305 automatically calls the other party's terminal, the RGB-+NTSC signal converting section 307 converts the RGB signal to an NTSC signal, and the audio synthesis device 311 converts the signal in the personal computer. Convert to audio,
Send each.

[Problem to be solved by the invention]

In this case, the video phone 303 converts the image signal modulated into the audio band sent from the video phone 300 into a digital signal, and further converts it into an NTSC video signal. Since the converted NTSC signal is further converted into an RGB signal and processed within a personal computer, the image quality inevitably deteriorates. Also, the number of component parts increases.

Videophone image data may be stored as it is modulated into the audio band, but since it is stored as an analog signal, the image quality deteriorates due to level-phase fluctuations. Furthermore, the amount of memory used increases compared to digital storage.

When synthesizing voice from voice data, it is necessary to prepare a device exclusively for voice synthesis, which complicates the synthesis process.

The present invention has been made to solve the above-mentioned drawbacks, and an object of the present invention is to provide a small-sized image/audio data communication device for a video telephone.

[Means to solve the problem]

In order to achieve the above object, the present invention is a communication device connected to a videophone device through a telephone line, which includes a dialing information receiving section that receives dialing information from the videophone device, and a dialing information receiving section that receives dialing information from the videophone device. an A/D converter that digitizes the image signal modulated for the telephone line, and a D/A that modulates the digitized image signal and audio signal for the telephone line.
a conversion unit, an I/O unit that performs input/output with a computer that stores digitized image signals and audio signals, and an I/O unit that maintains a telephone line in response to an incoming call from a video telephone device and receives the dial information. section, the dial information sending section, the A/
The device includes a D conversion section and a line corresponding section for switching to either one of the D/A conversion sections.

[Effect]

With this arrangement, digitized image and audio signals can be sent directly to the telephone line.
Compared to the past, the number of signal conversions for image data and audio data is significantly reduced, making it possible for the other party's videophone device to receive high-quality images and audio. [Embodiment] FIG. 1 shows an embodiment of the videophone image/audio data communication device of the present invention.

In the figure, 100 is a videophone, 101 and 106 are telephones, 102 is a telephone network, 103 is a personal computer, 104 is a display, 105 is a storage device, 200 is an image/audio data communication device for videophones, 201 is a line support unit, 202
203 is an FB signal receiving section, 203 is a PB signal transmitting section, 204 is an A/D converting section, 205 is a D/A converting section, 206 is a memory section, 207 is a control section, and 208 is an I/O section.

In the following, a case where an image/audio database built in a personal computer is searched from the videophone 100 side will be explained as an example.

When a call is made from the telephone 101 and received by this system, operation instructions are given by voice guidance using the voice transmission function of the videophone image/audio data communication device 200.

The audio transmission function of the videophone image and audio data communication device 200 transmits audio data from the personal computer 103 to the I/O unit 208.
The data is sent to the memory unit 206 through the memory unit 206.

After the voice data is converted into analog data by the D/A converter 205, it is sent to the telephone 101 through the line correspondence section 201 and the telephone network 102, where it can be heard as voice. When a database number, etc. is input using a PB signal, it is converted into a digital signal by the PB receiving unit 202 and sent to the I/O unit 208.
The data is sent to the personal computer 103 through. When the "send" button of the videophone 100 is pressed by the voice guidance of the telephone image/audio data communication device 200, the A/D converter 204
is stored in the memory unit 206. Under the control of the control unit 207, the data is sent to the personal computer 103 through the I/O unit 20 and stored in the storage device 105 as data.

A call is made from the telephone 101, and after the call is received by the system, an instruction to search for image data is given according to the voice guidance of the videophone image/audio data communication device 200.

When the database number etc. is input by the PB signal, the PB
The signal is converted into a digital signal by the receiving section 202 and sent to the personal computer 103 through the I/O section 208. PC 1
03 retrieves the corresponding image data and sends it to the memory unit 206 through the I/O unit 208. After the image data is converted into analog data by the D/A converter 205, it is sent to the videophone 100 through the line support unit 201 and the telephone network 102 and displayed as an image.

As is clear from the results, compared to the conventional technology, there was less conversion of image data, quality was degraded due to digital processing, memory usage was reduced, and size reduction was improved by reducing the number of structural parts.

〔Effect of the invention〕

As explained above, according to the present invention, it is possible to store videophone image quality as data in a personal computer without changing it, and the present invention can be miniaturized, so there is an advantage that it can be built into a personal computer. Effective communication that combines images and audio, which conventionally had to be considered independently, can be easily realized.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing an embodiment of the system configuration of the videophone image/audio data communication device of the present invention, and FIG. 2 is a system configuration diagram when conventional technology is used. 1 0 0. ．． ．． ．． Videophone, 101, 1 0 6. ．． ．． ．． Telephone 1 0 2. ．． ．． ．． Telephone network, 1 0 3. ．． ．． ．． Computer, 1 0 4. ．． ．． ．． Display, 1 0 5. ．．
．． ．． Storage device, 200. ．． ．． ．． Image and audio data communication device for videophone, 201. ．． ．． ．． Line support department, 2
02. , PB signal receiving section, 203. ．． PB signal transmitter,
2 0 4. ．． A/D conversion section, 2 0 5. ．． ．． ．． D
/A converter, 2 0 6. ．． ．． ．． Memory section, 2 0 7
．． ．． ．． ．． Control unit, 20 B. ．． 、． I/O section, 30
0, 3 0 3. ．． ．． ．． Videophone, 3 0 1,
3 0 4. ．． ．． ．． Telephone, 3 0 2. ．． ．． ．． telephone network, 305. ．． ．． ．． PB signal sending unit,

Claims (1)

[Scope of Claims] A communication device connected to a videophone device through a telephone line, the device comprising: a dialing information receiving unit that receives dialing information from the videophone device; and a dialing information transmitter that sends dialing information to the videophone device. an A/D conversion section that digitizes an image signal modulated for use on a telephone line; a D/A conversion section that modulates the digitized image signal and audio signal for use on a telephone line; an I/O section that performs input/output with a computer that stores image signals and audio signals; and an I/O section that maintains a telephone line in response to an incoming call from a video telephone device, the dial information receiving section, and the dial information sending section. ,
An image/audio data communication device for a videophone, characterized in that it comprises a line correspondence section that switches to either the A/D conversion section or the D/A conversion section.