JPH0451690A - Television conference recording controlling system - Google Patents

Abstract

PURPOSE:To record the situation of a television conference by one set of a recording device by providing a switching part to switch a picture signal supplied to one set of the recording device, and controlling the switching part by a talker detection signal so as to record the picture signal including the talker by switching the picture signal of the station in use and the picture signal of other station. CONSTITUTION:When the talker of the station in use (its own conference room) is detected by the talker detecting part 5, television camera 1 is controlled by this talker detection signal so that it is panned and zoomed so as to image- pickup the talker. In this case, the talker detection signal is sent to other station (remote party conference room) as additional information together with the picture signal. In case that no talker is in the station in use, but the talker is in other station, since the talker detection signal is sent from other station, the switching part 6 is controlled by the talker detection signal, and the picture signal including the talker is supplied to the recording device 3 and is recorded. Thus, the progressive situation of the television conference can be recorded by one set of the recording device 3.

Description

[Detailed Description of the Invention] [Summary] Regarding a video conference recording control system for recording video conference situations, the purpose is to record video conference situations using one recording device, and to record images of a television camera and other stations. A conference room equipped with a television monitor that adds and displays a signal, one recording device, a transmission/reception control section, and a speaker detection section that controls the television camera based on a speaker detection signal is connected via a line. In the connected video conference system, a switching unit is provided to switch the image signal applied to the recording device, and the switching unit is controlled by the speaker detection signal to switch between the image signal of the own station and the image signal of the other station. Accordingly, an image signal including a speaker is added to the recording device and recorded.

[Industrial application field]

The present invention relates to a video conference recording control method for recording video conference situations.

In a video conferencing system in which a television camera and a television monitor are installed in a conference room, an image signal captured by the television camera in the other conference room is received and displayed on the television monitor, and a conference is held between remote conference rooms. , it is requested that the status of the video conference be recorded.

[Prior art] For example, a conference room in a video conferencing system has a sixth
As shown in the figure, a television camera 41 on a swivel base 40,
A television monitor 42 and a plurality of microphones 43-1 to 43- on the table where conference participants 44-1 to 44-5 sit.
3 are provided. Microphones 43-1 to 43-
3 is an audio mixer 46 that performs mixing and a speaker detection unit 48;
The audio signal mixed by the audio mixer 46 is converted into, for example, a digital signal by the audio processing section 47 and is applied to the transmission/reception control section 49 .

In addition, the speaker detection unit 48 detects each conference participant 44-1 to 44-5.
When microphones are installed one-on-one with a speaker, the system determines that the conference participant whose output signal level is the highest is speaking, outputs a speaker detection signal, and turns according to the speaker detection signal. The platform 40 is controlled so that the television camera 41 is swiveled to image the speaker. Alternatively, zooming control is performed. Also, conference participants 44-1 to 44
When fewer than five microphones 43-1 to 43-3 are installed, each microphone 43-
A speaker can be detected by a combination of output signal levels 1 to 43-3. Regarding such speaker detection, for example, Japanese Patent Application Laid-Open No. 1140884, Japanese Patent Application Laid-open No. 1-1
This is shown in JP-A No. 62465 and the like.

Further, an image signal from the television camera 41 is applied to an image signal processing section 45, converted into, for example, a digital signal, and applied to a transmission/reception control section 49.

The transmission/reception control section 49 multiplexes the image signal, the audio signal, and the speaker detection signal as additional information, and sends the multiplexed signal to the line 50. Further, the image signal and audio signal from the other party's conference room are received by the transmission/reception control unit 49 via the line 50, and are added to the television monitor 42 to display the situation in the other party's conference room.

Therefore, depending on the content displayed on the TV monitor 42 and the audio from the speakers, conference participants 44-1 to 44-5 can
You can hold a conference with conference participants in the other conference room.

[Problem to be solved by the invention]

In the above-mentioned video conference system, if you want to record the progress of the conference, etc., you can record it with a recording device, but if you want to record only the image signal applied to the TV monitor 42, you can record the progress of the conference, etc. Only the situation in the room will be recorded, and the situation in the own conference room will not be recorded. If only the image signal from the television camera 41 is recorded, only the situation in the own conference room will be recorded, and the situation in the other party's conference room will not be recorded. In other words, when one recording device is used, it is possible to record only the situation in either the own conference room or the other conference room, and when recording both situations, it is possible to record only the situation in one of the conference rooms. A recording device will be required. Alternatively, while monitoring the statements of the conference participants 44-1 to 44-5 and the display screen of the television monitor 42, it is possible to switch between the own conference room and the other party's conference room and record on one recording device. However, there is a drawback that a dedicated operator is required to control recording switching, and the timing of switching is difficult.

An object of the present invention is to record the situation of a video conference using one recording device.

[Means to solve the problem]

The video conference recording control system of the present invention is to automatically switch between the own conference room and the other party's conference room for recording using one recording device, and will be explained with reference to FIG.

A television camera 1, a television monitor 2 that adds and displays image signals from other stations, one recording device 3, and a transmission/reception control section 4.
In a video conference system that connects a conference room equipped with a speaker detecting unit 5 and a speaker detecting unit 5 via a line, a switching unit 6 that switches the image signal to be applied to the recording device 3 is provided, and this switching unit 6 is It is controlled by a speaker detection signal, and switches between an image signal of its own station and an image signal of another station, and adds the signals to the recording device 3 to record an image including the speaker.

Further, the switching section 6 is controlled field by field, and the image signals of the own station and the image signals of other stations are divided into odd and even fields and recorded.

[Effect]

When the speaker in the own station (own conference room) is detected by the speaker detection unit 5, the television camera 1 is controlled by the speaker detection signal and performs rotation control and zooming control to image the speaker. be exposed. In this case, the speaker detection signal is sent as additional information to the other station (the other party's conference room) together with the image signal.

If there is no speaker at your own station and there is a speaker at another station, a speaker detection signal is sent from the other station, so the switching unit 6 is controlled by the speaker detection signal to display an image that includes the speaker. By adding the signal to the recording device 3 and recording it, the progress of the video conference can be recorded using one recording device W3.

In addition, by controlling the switching unit 6 on a field-by-field basis, for example, by adding and recording the image signal of the own station in odd-numbered fields and the image signal of another station in even-numbered fields to the recording device 3, one recording device 3 can record. You can record the progress of a video conference between your station and other stations. In this case, playback can be done by switching the playback signals for odd and even fields, displaying them on separate TV monitors, and taking advantage of the high correlation between fields to repeatedly display the same field. .

〔Example〕

Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 2 is a block diagram of an embodiment of the present invention.
1 to 10-3 are conference rooms, 11 is a television camera, 12 is a television monitor, 13 is a recording device, 14 is a transmission/reception control unit, 1
5 is a speaker detection unit, 16 is a switching unit, 17.18 is a distributor,
19 is an exchange.

Each conference room 10-1 to 10-3 has almost the same configuration, and an image signal from a television camera 11 and an audio signal from a microphone (not shown) are transmitted via a distributor 17 to a transmitting/receiving control unit. 4 and the switching unit 16 and received via the transmission/reception control unit 14 are sent to the television monitor 12 and the switching unit 1 via the distributor 18.
It is added to 6. This switching section 16 is controlled by a speaker detection signal from the speaker detection section 15.

The speaker detection unit 15 detects the speaker of the own station based on the audio signal from the microphone of the own station, and also detects the reception of the speaker detection signal of other stations, and detects the speaker of the own station. The detection signal is transmitted from the transmission/reception control section 14 together with the image signal. When a large number of conference rooms are connected via the video conference exchange 19 and a video conference is held, the image signal to which the speaker detection signal has been added is distributed to other conference rooms via lines, Image signals from other conference rooms are selectively transmitted to the conference room to which the image signal to which the speaker detection signal has been added is transmitted. Furthermore, when conference rooms are connected one-to-one via a line, image signals are sent and received between each other, and when speaker detection is performed, the speaker detection signal is added to the image signal. will be sent.

In addition, the speaker detection signal detected by the speaker detection section 15 controls the rotation of the television camera 11, and also controls the switching section 16 to control the image signal from the television camera 11 distributed by the distributor 17. is added to the recording device 13. In addition, when a speaker detection signal from another station is received and detected, the image signal of the other station distributed by the distributor 18 is transmitted to the recording device 13.
The switching unit 16 is controlled so that the signal is added to

Therefore, on one recording device 13, an image including the speaker of the own station and an image including the speaker of the other station are automatically switched and recorded, and the progress of the video conference is recorded. can be recorded. Furthermore, the recording device 13 can be configured not only to record analog image signals like a normal video deck, but also to record digital image signals or highly efficient encoded image signals.

FIG. 3 is a block diagram of another embodiment of the present invention, with 20
-1 to 20-3 are conference rooms, 21 is a television camera, 22 is a television monitor, 23 is a recording device, 24 is a transmission/reception control unit,
25 is a speaker detection section, 26 is a switching section, 27, 28 is a distributor, and 29 is an exchange.

When the speaker detecting section 25 detects the speaker of the own station, the rotation control of the television camera 22, etc. is performed in the same manner as in the conventional example. Furthermore, the switching section 26 is controlled by an odd-even field signal, and this odd-even field signal is
For example, the image signal of the television camera 21, which is formed based on the vertical synchronization signal of the image signal and distributed by the distributor 27 in the odd field, is applied to the recording device 23, and is distributed by the distributor 28 in the even field. The switching unit 26 is configured to add the received image signal to the recording device 23.
is controlled. Therefore, by one recording device 23, the image signal from the TV camera 21 of the own station and the image signal of the other station displayed on the TV monitor 22 are switched and recorded field by field, as shown in FIG. be done. One frame constituting one screen is formed by two fields, and the frequency of these fields is 60 Hz in the NTSC system. Therefore, the switching unit 26 is controlled to switch every 1/60 seconds.

FIG. 5 is a block diagram of an image playback display control section when playing back images recorded according to the above-mentioned embodiment, and reference numeral 31 indicates an image signal of the own station and an image signal of another station, as shown in FIG. 32 is an image playback display control unit, 33 and 34 are TV monitors for own station and other stations, 35 is a selector, 36 is a synchronization detection unit, 3
7.38 is a field memory.

As shown in FIG. 4, the image signal reproduced from the recording device 31 includes the local station image signal and the other station image signal within one frame. Therefore, the synchronization detection section 36 detects the vertical synchronization signal, creates an odd-even field signal indicating whether it is an odd field or an even field, and selects the selector 3.
For example, an image signal of an odd field is added to a field memory 37, and an image signal of an even field is added to a field memory 38. Then, the image signal read out from the field memory 37 is applied to the television monitor 33, and the image signal is read out repeatedly in the next field, so that one frame worth of images is displayed on the television monitor 33 as an image of the own station. Similarly, the image signal read from the field memory 38 is displayed on the television monitor 3.
4, and the image signal is read out repeatedly in the next field, and the image for one frame is displayed on the television monitor 34 as an image of another station.

Therefore, it is possible to record images of the own station and other stations for each field on one recording device 31, and to reproduce the images to display images of the own station and other stations, respectively.

〔Effect of the invention〕

As explained above, the present invention provides one recording device 3 with
By automatically switching and adding the image signal of the own station and the image signal of the other station using the switching unit 6, the progress status of the video conference can be recorded. In the case of control, when a video conference is held in a plurality of conference rooms, images including each speaker can be recorded, so that the situation of the video conference can be clearly seen even when played back.

In addition, when controlling the switching unit 6 for each field, it is possible to record the own station image signal and the other station image signal on one recording device 3, and when playing back, by using the respective television monitors, it is possible to record the own station image signal and the other station image signal. It is possible to reproduce the situation.

Therefore, there is an advantage that video conferences can be recorded economically and with good operability.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of the principle of the present invention, FIG. 2 is a block diagram of one embodiment of the present invention, FIG. 3 is a block diagram of another embodiment of the present invention, and FIG. 4 is an explanatory diagram of switching recording. FIG. 5 is a block diagram of the image reproduction display control section, and FIG. 6 is an explanatory diagram of the conference room. 1 is a television camera, 2 is a television monitor, 3 is a recording/reproducing device, 4 is a transmission/reception control section, 5 is a speaker detection section, and is a switching section.

Claims (1)

[Claims] [1] A television camera (1), a television monitor (2) that adds and displays image signals from other stations, and one recording device (3).
), a transmission/reception control unit (4), and a speaker detection unit (5) that controls the television camera (1) based on a speaker detection signal, and a conference room is connected via a line. A switching unit (6) is provided for switching the image signal to be applied to the recording device (3), and the switching unit (6) is controlled by the speaker detection signal to switch between the image signal of the own station and the image of the other station. A video conference recording control system characterized in that the video conference signal is switched between signals and an image signal including a speaker is added to the recording device (3) and recorded. [2] A television camera (1), a television monitor (2) that adds and displays image signals from other stations, and one recording device (3).
), a transmission/reception control unit (4), and a speaker detection unit (5) that controls the television camera (1) based on a speaker detection signal, and a conference room is connected via a line. A switching unit (6) is provided to switch the image signal to be applied to the recording device (3), and the switching unit (6) is controlled field by field to distinguish between the image signal of the own station and the image signal of the other station. A video conference recording control system characterized by recording video separately into odd-even fields.