JPH0482488A - Multi-point remote lecture system - Google Patents

Abstract

PURPOSE:To make the content of a lecture easily understood for a lecture by synthesizing a picture signal from a picture transmitter-receiver, a studio station and a questionnaire remote station class room and a questionnaire remote station class room name picture signal and displaying the result onto a remote station class room other than the questionnaire remote station class room. CONSTITUTION:When a remote station 20 starts giving a questionnaire, a remote station 30 separates a voice signal from a multiplex signal from the remote station 20 received by a picture transmitter-receiver 35 and the voice signal is sounded from a speaker 34-2. On the other hand, a control signal sent from a control section 27 of the remote station 20 is received by a control section 37 via a ground private line 3 and a message generator 39 generates a character representing a station name of a caller station. A pattern forming device 38 synthesizes a picture signal of a studio station 10 received by a picture transmitter-receiver 36, a picture signal from the remote station 20 and a station name character picture signal and outputs the result to a monitor 32. Thus, the content of a lecture is easily understood when a questionnaire is raised in other class room.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a multipoint remote lecture system.

[Conventional technology]

Conventionally, in multipoint remote lecture systems, when an instructor sitting at a studio station allows students sitting at a remote station to speak, the image of the studio station will be displayed on the remote station where they are speaking, and the image of the studio station will be displayed on the other remote stations. , an image of the remote station speaking was displayed.

[Problem to be solved by the invention]

In the conventional multipoint remote lecture system described above, only the image of either the studio station or the remote station where the speaker is speaking is displayed. If you can only see the image of the remote station speaking and the instructor explains to the questioner using drawings, etc., students at other remote stations will not be able to understand how the instructor gave the answer. I felt like I had been left out of the lecture. Another drawback is that it is not possible to know which remote station is making a statement.

[Means to solve the problem]

The multipoint remote lecture system team of the present invention is a multipoint remote lecture system in which lectures are conducted by connecting one studio station and a plurality of remote station classrooms using a bidirectional two-channel satellite line and a dedicated terrestrial line. lecture or
an image transmission transmitter that multiplexes images and audio signals such as questions from a remote station classroom and transmits them to a remote station or studio station and other remote stations via a satellite line; An image transmission receiving device receives a multiplexed signal sent from a station and separates it into an image signal and an audio signal, and receives a remote station classroom information signal sent by a remote station classroom when asking a question, and receives a remote station classroom information signal sent from the remote station classroom when asking a question. A message generating device that generates a name image signal, the image signal from the image transmission and receiving device, the separated studio station and the question remote station classroom, and the question remote station classroom name image signal generated by the message generating device are combined to generate a question. It has a screen configuration device that is displayed in a remote station classroom other than the remote station classroom.

〔Example〕

Figure 1 consists of a studio station 10 where the instructor is present, and a remote station 20.30 where the students are present, a satellite line 1.2 connecting the studio station and the remote station, a terrestrial dedicated line 3,
Cameras 11, 21.31 that capture images of the instructor or students, monitors 12.22.23 that display images received from a remote station or studio station, and microphones 13.23.33 that collect the voice of the instructor or students. and a speaker 14.24 that amplifies the audio signals of the instructor and students.
-1.24-2.34-1.34-2, an image transmission transmitting device 15 that multiplexes the instructor's image signal and audio signal, and a video signal and audio signal received from the studio station or remote station. Image transmission/reception device 1 that separates signals
6, 26° 36, an image transmission transmitting/receiving device 25, 35 that multiplexes and separates the image signal and audio signal of the remote station, and a control unit 17, 27° 37 that controls switching of the image signal, and switches the image signal. The image switching device 18 to control, the message generating device 29, 39 that generates the name of the remote speaking station to be displayed together with the received image of the remote speaking station, and the received image of the studio station and the remote speaking station, and the character output of the message generating device 2939. Screen composition device 2 that synthesizes signals
It consists of 8°38.

Here, an example in which the remote station 20 requests to speak will be explained.

During a lecture, in order to ask a question to the lecturer at the remote station 20 or the studio 10, you operate the operation unit (not shown) to request a comment, and the control unit 27 generates a comment request signal that is sent to the studio via the terrestrial dedicated line 3. It is transmitted to the control section 17 of the station 10.

The control unit 17 of the studio station displays on the operation unit (not shown) that there is a request to speak from the remote station 20, and notifies the instructor. The lecturer who receives the notification operates the operation unit 3 to generate a speaking permission signal in the control unit 17 and sends it back to the control unit 27 of the remote station 20 via the terrestrial dedicated line 3. The control unit 27 of the remote station 20 displays on the operation unit that speaking permission has been granted, and notifies the student. The student at the remote station 20 who has been notified of permission to speak operates the operation unit and starts asking questions.

As a result of this operation of the operating section, the image signal captured by the camera 21 and the sound collected by the microphone 23 were collected. The audio signals are multiplexed by the image transmission/reception device 25 and transmitted via the satellite line 2 to the image transmission/reception device 16 of the studio station 10 and the image transmission/reception device 35 of the remote station 30.

At the same time, the control unit 27 sends a control signal to the studio station 10 and the remote station 30 indicating that the speaker is the remote station 20.
The data is transmitted to the control unit 17.37 via the terrestrial dedicated line 3.

In the studio station 10, the multiplexed signal received by the image transmission/reception device 16 is separated into an image signal and an audio signal, the image signal is displayed on the monitor 12 via the image switching device 18, and the audio signal is amplified by the speaker 14. Questions from students at remote station 20 are conveyed.

At the remote station 30, the multiplexed signal from the remote station 20 received by the image transmission/reception device 35 is separated into an image signal and an audio signal, and the audio signal is amplified by the speaker 34-2. On the other hand, a control signal sent by the control section 27 of the remote station 20 indicating that the speaking station is the remote station 20 is received by the control sections 17 and 37 of the studio station 10 and the remote station 30 via the terrestrial dedicated line 3. Ru. When the control unit 37 of the remote station 30 recognizes that the remote station 20 is the speaking station, it drives the message generator 39 to generate characters indicating the station name, such as "remote station 20." The screen configuration device 38 receives the image signal of the studio station 10 received by the image transmission/reception device 36, the image signal of the remote station 20 received from the image transmission/reception device 35, and the message generation device 3 under the control of the control unit 37. The station name character image signal generated by the station name character image signal is synthesized and output to the monitor 9. The monitor 9 displays an image of the instructor at the studio station, an image of the student who asked the question at the remote station 20, and the station name letters of the remote station 20.

A similar operation occurs when the remote station 30 receives permission to speak, and the monitor 22 of the remote station 2o displays the image of the instructor at the studio station, the image of the student at the remote station 3o, and the station name letters of the remote station 3o. is displayed. The audio from the studio station is from speaker 21-1.34 of remote station 20.30.
-1 to amplify each sound. Under the control of the control unit, the screen configuration device can output either the instructor's image or the student's question image, and display one image in a larger or smaller size.

〔Effect of the invention〕

As explained above, the present invention allows students at other remote stations to see the two-way conversation between the instructor and the speaker, so even if questions are being asked in other classrooms, This has the effect of being able to participate in the lecture and easily understand the content of the lecture.

Furthermore, since the name of which remote station is displayed on the screen, the other party can be recognized.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing one embodiment of the present invention. 1.2...Satellite line, 3...Terrestrial dedicated line, 1o.
...Studio station, 20.30...Remote station, 112
1.31...Camera, 12,22.32...Monitor, 1B, 23.33...Microphone, 14°24-
1.24-2.34-1.34-2...Speaker, 1
5... Image transmission transmitting device, 25.35... Image transmitting/receiving device, 16, 26.36... Image transmitting/receiving device, 17, 27.37... Control unit, 18... Image switching Device, 28.38...Screen configuration device, 29°39...
・Message generator.

Claims (1)

[Claims] Bidirectional communication between one studio station and multiple remote station classrooms2
In a multipoint remote lecture system that connects a channel's satellite line and a dedicated terrestrial line to conduct lectures, images and audio signals such as lectures from a studio or questions from a remote station classroom are multiplexed and transmitted remotely via a satellite line. an image transmission transmitting device for transmitting to the station or studio station and another remote station, and receiving a multiplexed signal sent from the studio station or remote station via the satellite line and separating it into an image signal and an audio signal. an image transmission and reception device; a message generation device that receives a remote station classroom information signal sent by a remote station classroom when asking a question and generates an image signal of the name of the question remote station classroom; the image transmission and reception device and a separate studio station; The multipurpose computer is characterized by having a screen composition device that synthesizes the image signal from the question remote station classroom and the question remote station classroom name image signal generated by the message generating device and displays the synthesized image signal in a remote station classroom other than the question remote station classroom. Point remote lecture system.