JPH0823529A - Store and forward exchange system for video signal and voice signal using video telephone - Google Patents

Abstract

PURPOSE:To perform the input instruction and transmission instruction of video signals and voice signals by simple operations. CONSTITUTION:This system is composed of a means 20 for receiving the mixed signals of the video signals and the voice signals transmitted from a video telephone 1 through a line, the means 22 for separating the signals to the video signals and the voice signals, a storage means 24 for respectively recording the separated signals in prescribed places, a device 28 for sensing duplex tone multiple frequency(DTMF) signals originated from the line and a CPU 32 for retrieving the video signals and the voice signals stored in the storage means 24 based on the sensed DTMF signals, mixing them while synchronizing them and then transmitting them through a MODEM 21 to the video telephone of a user. The operation is instructed on an interactive basis by voice response from the CPU 32 for the retrieval of the video signals and the voice signals based on the DTMF signals. Further, a transmission means transmits the requested video signals and voice signals to the video telephone of single or plural users instructed by the DTMF signals.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention receives a video signal and a voice signal by using a videophone capable of transmitting a video signal and a voice signal which are moving images to another telephone by using a telephone line. Then, the stored video signal and audio signal are stored in the storage means, and the stored video signal and audio signal are accessed from other videophones, drawn out interactively in response to a request, or with respect to the videophone instructed by the DTMF. It relates to devices that can be delivered.

[0002]

2. Description of the Related Art Conventionally known response type interactive image data systems are mainly connected to an image database by a keyboard and usually by a complicated command when the terminal side is an image transmission system using a personal computer or a dedicated terminal. , It is possible to extract video / audio signals based on the determined protocol. Conventional data storage and exchange systems include a mail box type that handles only voice and a fax box type that can be handled by fax. Videophones are becoming widespread, but they are the same model on the opposite side, and it is possible to use a real-time system in which the receiving side is also activated when transmitting images, such as being unable to talk and exchange information unless they use the same protocol Is.

[0003]

When both the transmitting side and the receiving side are computer terminals, instructions and commands can be given by operating the keyboard or inputting, but complicated procedures and promises must be kept, and It's not as easy as operating a phone. In the case of a mailbox, the only information that can be handled is audio information, and image information cannot be handled. In the case of a fax box, image information can be handled, but it is still image information, and moving image information and voice information cannot be handled. In the case of videophone, not only can information be transmitted in real time,
You cannot send to multiple phones at the same time. Therefore, the present invention has been made in view of the inconveniences of the conventional communication media. It is possible to input and instruct by a simple operation such as a telephone operation, and at the same time, moving image information and audio information can be transmitted to a plurality of communication media. It is intended to provide a system capable of transmitting and.

[0004]

Means for Solving the Problems That is, the present invention provides a means for receiving a mixed signal of a video signal and an audio signal transmitted from a videophone through a line, and a signal received by the receiving means as a video signal. Means for separating into audio signals, storage means for recording the separated video signals and audio signals in predetermined places respectively, and a device for sensing dual tone multi-frequency (DTMF) transmitted from a communication network (line) And searching the video signal and the audio signal respectively stored in the storage means based on the sensed DTMF signal, mixing the searched video signal and the audio signal while synchronizing them, and then, through the modem, the user's videophone. The present invention is achieved by a video-phone storage / exchange system using a video-phone, which uses a video-phone that is composed of a CPU for transmitting the video signal. It should be noted that the Marconi UK company currently used as a videophone is suitable for transmitting moving image information and audio information.

[0005]

That is, in the present invention, the video signal and the audio signal are mixed from the video telephone capable of transmitting the moving image and input to the storage and exchange system via the telephone line. Then, the system separates the video signal and the audio signal by the separating means and stores them in separate storage means. On the other hand, a user who has accessed the device via a communication network (telephone line, etc.) transmits a DTMF signal from a telephone device, interactively draws out a video signal and an audio signal stored in the storage means, and further instructs by the DTMF signal. , The retrieved video and audio signals are mixed while synchronizing and transmitted to the instructed videophone (s). Therefore,
The user can use the video signal and the audio signal not only in real time but with a time lag.

[0006]

The present invention will be described in detail below with reference to the illustrated embodiments. In the figure, 1 is a videophone, and the videophone 1 comprises a video camera 2 and a handset 3.
Inside the mixing means 10, the audio signal and the video signal are mixed through the video signal coding means 4, the audio signal coding means 5, and the compression means 6 and 7, respectively, and the modem means 13 and the telephone line 10 are used. Sent. Further, the videophone is also equipped with a transmitting means 8 of a dual tone multifrequency (DTMF) signal, which is also configured to be transmitted via a telephone line. Furthermore, there is a telephone line for videophone 1.
A separation means 9 for separating a mixed signal of a video signal and an audio signal transmitted via 10 and demodulation means 11, 12 for demodulating each separated video signal and audio signal are installed. . In addition, 13 is a modem means for signal transmission, and 14
Is a non-compression means for the encoded signal, and 15 is a display means for displaying the video signal information on the display 16.

On the other hand, reference numeral 20 denotes a videophone information storage / exchange system for receiving a signal transmitted from the videophone 1.
The system 20 includes a modem means 21, a separating means 22 for separating a video signal and an audio signal received by the modem, and the separating means 22.
The storage means 24 for storing the video signal and the audio signal separated by each in a compressed state for storage, and the mixing means 26 for mixing the video signal and the audio signal extracted from the storage means 24 according to a predetermined instruction while synchronizing them. The signal mixed by the mixing means 26 is transmitted to a predetermined videophone 1 via the modem means 21. The DTMF sensing means 28 is connected to the input side of the modem means 21 of the system 20, and the detection signal of the sensing means 28 is connected to the central processing unit (CPU) 32 via the signal converting means 30. This C
PU32 is configured to interactively withdraw instruction commands to the user via voice guidance means,
According to the instruction command, the CPU 32 is configured to extract predetermined video signal information and audio signal information from the storage means 24 toward the mixing means 26. When the system 20 does not operate in real time, the CPU 32 instructs the user (telephone number, etc.) to automatically make a call, and in the connected state, the video signal information and the audio signal information are sent by the user according to the instruction command. It is configured to transmit to the videophone 1.

The storage means 24 has a built-in transmission side user ID storage section, reception side user transmission protocol storage section, transmission time storage section, and transmission / reception program storage section. Reference numeral 34 is a protocol conversion means for causing the user to transmit according to the communication protocol based on the transmission / reception program registered in the storage means.

In the videophone information storage / exchange system according to the present embodiment having the above-mentioned configuration, the user first uses one videophone 1 to transmit the desired video signal information and audio signal information. Then, the video signal information captured by the video camera and the audio signal information captured by the receiver are encoded by the encoding means 4 and 5, further compressed by the compression means 6 and 7, and then mixed by the mixing means 6. , Via the modem means 13 to the system 22. The transmitting side transmits a signal called DTMF by a normal push-phone operation of the videophone 1. This allows the exchange on the storage system side to be activated. The storage system side, which is the receiving side, receives the video signal and the audio signal from the videophone 1 through the modem means 21, divides this signal into the video signal and the audio signal through the separating means 22,
These are stored in a predetermined storage means 24 by an instruction of a predetermined program of the CPU 32 or a DTMF signal from the transmitting side videophone.
To be stored. Further, the video signal and the audio signal recorded and accumulated in the receiving side system can be transmitted at a predetermined time to another videophone designated by the DTMF signal from the transmitting side videophone. Similarly, D
The TMF signal allows the same video signal and audio signal to be simultaneously transmitted to a plurality of videophones within a predetermined time.

That is, in the apparatus on the system side, the video signal information and the audio signal information stored in the storage means are taken out from the storage means 24 at a predetermined time and mixed by the mixing means 26.
Thus, the video signal and the audio signal are mixed while being synchronized. The mixed signal mixed is automatically dialed to a predetermined user (single or plural) at a time designated by the user on the transmitting side in advance, and when the dial is connected, the modem means 21 Via videophone 1
Send to. In the videophone 1 that has received the transmission, the separation means 9 separates the mixed signal into a video signal and an audio signal, and the decompression means 11 and 12 decompress the mixed signal and then demodulate the audio signal. The video signal output from the speaker is displayed on the display device 16 of the videophone 1. When a signal is transmitted to the videophone 1 on the receiving side, if the model is different, the CPU 32 on the system side can perform protocol conversion and output to the videophone 1 of any type.

[0011]

As described above, the storage and exchange system for video and audio signals using the videophone according to the present invention is capable of freely distributing video information and audio signal information from a videophone to a desired place at any time. You can Also, until now, videophones could only send and receive between the same models, but by using this system, it is possible to send and receive between different models and protocols using videophones. It is not necessary to standardize the standards. Furthermore, it is not necessary to transmit and receive in real time, and it is possible to talk with many people at the same time.

[Brief description of drawings]

FIG. 1 is a block diagram of a system according to an embodiment of the present invention.

[Explanation of symbols]

 1 Videophone 2 Video Camera 3 Handset 4 Video Signal Coding Means 5 Audio Signal Coding Means 6 Compressing Means 7 Compressing Means 8 Sending Means 9 Separating Means 10 Mixing Means 11, 12 Demodulating Means 14 Displaying Means 16 Display 16 Display 20 Video Telephone Information Storage / Exchange System 21 Modem Means 22 Separation Means 24 Storage Means 26 Mixing Means 28 Sensing Means 30 Signal Converting Means 32 CPU 34 Protocol Converting Means

Claims (3)

[Claims] 1. A means for receiving a mixed signal of a video signal and an audio signal transmitted from a videophone through a line, and means for separating the signal received by the receiving means into a video signal and an audio signal. Storage means for recording the separated video signal and audio signal in predetermined places respectively, and dual tone multi-frequency (DT) transmitted from the communication network (line).
A device for detecting MF), a video signal and an audio signal respectively stored in the storage means based on the detected DTMF signal, and a modem after mixing the searched video signal and the audio signal while synchronizing them. A video signal and audio signal storage and exchange system using a videophone, which includes a CPU for transmitting to a user's videophone via the videophone. 2. The videophone according to claim 1, wherein the retrieval of the video signal and the audio signal based on the DTMF is configured so that an operation instruction can be made interactively by a voice response from the CPU. Storage and exchange system for video and audio signals using videophone. 3. The transmission means is configured to transmit a requested video signal and audio signal to a videophone of one or a plurality of users instructed by DTMF. Videophone and video signal storage and exchange system using a videophone.