JPH02104086A - Three-party speech video telephone conference system - Google Patents

Abstract

PURPOSE:To attain a conference among three parties with one video telephone set by connecting a line of each video telephone set to a 3-party speech circuit at an exchange side. CONSTITUTION:While subscribers A, B are in communication, if a subscriber C joins the speech, the subscriber A depresses a 3-party speech button 9 and sends the signal to an ISDN exchange 11. The ISDN exchange 11 uses the signal to operate a 3-party speech circuit 12 thereby connecting the lines of the three parties. Then the subscriber A dials a telephone number of the subscriber C by using a pushbutton 6. After the subscriber C is replied, the 3-party speech picture button 8 is depressed, then a picture 5 is split into a subscriber B picture 5a and a subscriber C picture 5b and the subscribers B, C are respectively displayed on them.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a video conference system, and particularly to a system for holding a conference between three parties.

[Prior Art] In recent years, a video conference system using Integrated Service Digital Y4 (ISDN) has been developed, making it possible to hold conferences between remote locations using television. In this case, subscribers at two locations are connected via digital lines and a switching center, and voice communication is performed.

This is achieved by sending and receiving image information through this line.

[Problem to be solved by the invention]

The conventional video conference system described above assumes a conference between subscribers at two different locations, so one-on-one communication is possible.
The meeting will be held in a local-level format, and meetings that include third parties will not be allowed. If you are forced to hold a conference between three parties, you will have to install two videophones for each subscriber and connect each videophone to each subscriber at a different location, which increases equipment costs. There is also the problem of high line costs.

SUMMARY OF THE INVENTION An object of the present invention is to provide a video conference system that allows three parties to hold a conference using one video phone.

[Means to solve the problem]

In the three-party video conference system of the present invention, the lines of each video phone of a plurality of subscribers are connected to a three-party call circuit at the switching center, and when a predetermined signal is received, the line between the three parties is connected. Each subscriber's video phone is configured to enable connection.
The device includes means for outputting a signal for operating the circuit for three-way communication, and means for dividing and displaying different interlocutors on the screen.

[Effect]

In the above-described system, each subscriber can switch to a two-party or three-party conference system by pressing a button, and a three-party video conference can be easily realized.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

The figure is a system configuration diagram of an embodiment of the present invention.

In the figure, A, B, and C represent three subscribers,
Each subscriber is equipped with the same videophone. That is, this video telephone 1 has a mouthpiece 2. Earpiece 3.
Camera 41 screen 5. and various buttons. The various buttons include a button for dialing 6. Image button for 2-party calls 7. Image button for 3-party calls 8. and a three-party call button 9. Each video phone I is connected to an 15DN switching center 11 via a digital line 10, and each line 10 is further connected to a three-way call circuit 12.

In this configuration, when subscriber A wants to talk to subscriber B, subscriber A uses the button 6 to dial the telephone number of subscriber B with whom he wants to talk. Subscriber A
When subscriber B responds, he presses the two-party call image button 7 to start image communication. This image is captured by the camera 4, and the sound is captured by the mouthpiece 2. The signals are transmitted and received through the earpiece 3 and transmitted through the digital line 10. and l5DN switching center 11
is sent to subscriber B via .

If subscriber C joins during a call between subscriber A and subscriber B, subscriber A presses the three-way call button 9 and transmits the signal to l5.
It is sent to the DN switching center 11. (2) In the SDN exchange 11, this signal operates the three-party call circuit 12 to connect the lines of the three parties.

Thereafter, subscriber A dials subscriber C's telephone number using pushbutton 6. 3 after subscriber C responds
By pressing the subscriber call image button 8, the screen 5 is divided into an image 5a for subscriber B and an image 5b for subscriber C, and subscribers B and C are displayed respectively.

Therefore, in this system, each subscriber can implement a video conference between three parties by simply installing one video phone, without increasing equipment costs or line costs, and can increase the utility value of the video phone. .

(Effects of the Invention) As explained above, the present invention enables line connection between three parties at the switching center by a three-party connection operation from the subscriber side, and the videophones of each subscriber are different. Since the system is configured so that the participants are divided and displayed on the screen, each subscriber can switch to a two-party or three-party conference system by pressing a button on a single videophone, making it possible to create a three-way TV. This has the effect of making it easier to conduct conference calls.

[Brief explanation of the drawing]

The figure is a block diagram showing an embodiment of the system of the present invention. 1... Video phone, 2... Mouthpiece, 3... Earpiece, 4... Camera, 5... Screen, 5a, 5b...
Split screen, 6... Button button, 7... Image button for 2-party call, 8... Image button for 3-party call, 9...
・Three-party call button, 10...Digital line, 11
...15DN switching center, 12...3-way call circuit.

Claims (1)

[Claims] 1. When the line of each video phone of multiple subscribers is connected to a three-party call circuit at the exchange side and a predetermined signal is received, the three-party call circuit allows line connection between three parties. The videophone of each subscriber is equipped with a mouthpiece, an earpiece, a dial button, a camera, etc., as well as a means for outputting a signal to operate the three-way communication circuit, and a device for dividing different interlocutors. A three-party video conference system characterized by comprising a means for displaying the image on a screen.