JPH0685937A - Multi-point controller for video conference - Google Patents
Multi-point controller for video conferenceInfo
- Publication number
- JPH0685937A JPH0685937A JP4236787A JP23678792A JPH0685937A JP H0685937 A JPH0685937 A JP H0685937A JP 4236787 A JP4236787 A JP 4236787A JP 23678792 A JP23678792 A JP 23678792A JP H0685937 A JPH0685937 A JP H0685937A
- Authority
- JP
- Japan
- Prior art keywords
- video
- demultiplexing
- video signal
- conference
- fifo memory
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明はテレビ会議システムに利
用し、多地点の会議室装置との間で映像の送受を行うテ
レビ会議用多地点制御装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multipoint control device for videoconference, which is used in a videoconference system and transmits / receives an image to / from multipoint conference room devices.
【0002】[0002]
【従来の技術】多地点テレビ会議システムは、多地点の
それぞれの会議室に設けられるマイクロホン、スピーカ
ー、テレビカメラ、モニタからなる会議室装置と、この
複数の会議室装置と接続される多地点での会議を制御す
る多地点会議制御装置を有している。この多地点会議制
御装置では、音声、画像コーディック処理とともに、個
々の会議室装置のマイクロホンからの音声を検出する検
出部が設けられている。2. Description of the Related Art A multipoint video conference system includes a conference room device including a microphone, a speaker, a TV camera, and a monitor provided in each conference room at multiple points, and a multipoint device connected to the plurality of conference room devices. Has a multipoint conference control device for controlling the conference. This multipoint conference control device is provided with a detection unit that detects the voice from the microphone of each conference room device as well as the voice and image codec processing.
【0003】さらに、多地点会議制御装置には、検出部
で検出した音声を合成して、発信地点、すなわち、どの
会議室装置での発言かを発言地点判定部で判定してい
る。Further, in the multipoint conference controller, the speech detected by the detector is synthesized, and the origin point, that is, in which conference room device the speech is made is determined by the speech point determiner.
【0004】そして、発言が判定した会議室装置内のテ
レビカメラのズームアップ制御を行っている。この場
合、発言地点判定部での判定に基づいて画像切り替え制
御部で発言が判定した会議室装置内のテレビカメラのズ
ームアップ制御を行うための切り替えを行っている。さ
らに、会議室装置内のテレビカメラからの映像信号、ま
たモニタへの映像信号を分離する信号分離部と、各会議
室装置へ映像信号を切り替える切り替え部を備えた映像
処理部が設けられている。Then, the zoom-up control of the television camera in the conference room apparatus in which the speech is judged is performed. In this case, switching is performed to perform zoom-up control of the television camera in the conference room device whose utterance is determined by the image switching control unit based on the determination by the utterance point determination unit. Further, there is provided a signal separation unit for separating a video signal from a television camera in the conference room device and a video signal to the monitor, and a video processing unit having a switching unit for switching the video signal to each conference room device. .
【0005】図2は従来のテレビ会議用多地点制御装置
の映像処理部の構成を示している。図2において、映像
処理部は信号の分離を行う多重分離部1a、1b、1c
と、各地点の会議室装置への映像信号の切り替えを行う
映像信号切り替え部2と、映像信号切り替え部2で選択
された映像信号を一時的に蓄えるFIFOメモリ3a、
3b、3cとを有している。FIG. 2 shows the configuration of a video processing unit of a conventional multipoint control device for a video conference. In FIG. 2, the video processing unit is a demultiplexing unit 1a, 1b, 1c that separates signals.
A video signal switching unit 2 for switching the video signal to the conference room device at each point, and a FIFO memory 3a for temporarily storing the video signal selected by the video signal switching unit 2,
3b and 3c.
【0006】次に、この従来例の構成における動作につ
いて説明する。多重分離部1a〜1cで分離された映像
信号は映像信号切り替え部2でそれぞれの地点の会議室
装置に送信する映像信号に切り替えられ、FIFOメモ
リ3a〜3cに多重分離部1a〜1cからのクロック信
号のタイミングで書き込まれる。この後、FIFOメモ
リ3a〜3cから映像信号を多重分離部1a〜1cから
のクロック信号のタイミングで読み出して選択した会議
室装置に映像信号を送出する。Next, the operation of this conventional configuration will be described. The video signals separated by the demultiplexing units 1a to 1c are switched by the video signal switching unit 2 to the video signals to be transmitted to the conference room devices at the respective points, and the FIFO memories 3a to 3c receive the clock signals from the demultiplexing units 1a to 1c. It is written at the timing of the signal. After that, the video signals are read from the FIFO memories 3a to 3c at the timing of the clock signals from the demultiplexing units 1a to 1c, and the video signals are sent to the selected conference room device.
【0007】このように上記従来例の映像処理部では複
数地点数と同数のFIFOメモリ3a〜3cを用いて、
選択した会議室装置との間で映像信号を送受している。As described above, the conventional image processing unit uses the same number of FIFO memories 3a to 3c as a plurality of points,
Video signals are transmitted and received to and from the selected conference room device.
【0008】[0008]
【発明が解決しようとする課題】したがって、従来のテ
レビ会議用多地点制御装置では地点の会議室装置が多く
なると、その数だけFIFOメモリが必要となり、装置
規模が増大するという欠点があった。Therefore, in the conventional multipoint control device for video conference, when the number of conference room devices at a spot increases, FIFO memories are required for the number of conference room devices, and the device scale increases.
【0009】本発明はこのような従来の課題を解決する
ものであり、一つの記憶部に記憶した映像信号を多地点
の会議室装置に同時に送ることができ、その装置規模を
縮小できる優れたテレビ会議用多地点制御装置の提供を
目的とする。The present invention solves such a conventional problem and is excellent in that the video signals stored in one storage unit can be simultaneously sent to the conference room apparatus at multiple points, and the apparatus scale can be reduced. An object is to provide a multipoint control device for video conference.
【0010】[0010]
【課題を解決するための手段】上記目的を達成するため
に、本発明のテレビ会議用多地点制御装置は、音声入出
力装置と映像撮影放映装置とを有する複数の会議室装置
との間で映像信号を送受するために多重分離を行う複数
の多重分離手段と、複数の多重分離手段からの映像信号
を記憶する一つの記憶手段と、多重分離手段からの複数
の映像信号を選択して記憶手段に出力し、又は記憶手段
に記憶した複数の映像信号を選択して多重分離手段に出
力するための映像信号切り替え手段と、複数の多重分離
手段の同期を取って記憶手段で記憶した映像信号を同時
に読み出すタイミングを合わせるため同期信号を切り替
えて多重分離手段に供給する同期信号切り替え手段とを
備える構成である。In order to achieve the above object, a multipoint control device for a video conference according to the present invention is provided between a plurality of conference room devices having an audio input / output device and a video shooting / casting device. A plurality of demultiplexing means for performing demultiplexing for transmitting and receiving video signals, one storage means for storing the video signals from the plurality of demultiplexing means, and a plurality of video signals from the demultiplexing means are selectively stored Means for selecting a plurality of video signals stored in the storage means or output to the demultiplexing means, and a video signal stored in the storage means in synchronization with the plurality of demultiplexing means In order to match the timings of simultaneously reading the signals, the synchronizing signal is switched and the synchronizing signal switching means is supplied to the demultiplexing means.
【0011】そして、複数の多重分離手段の同期を取る
場合に、一つの多重分離手段からの同期信号を同期信号
切り替え手段で切り替えて複数の多重分離手段に供給す
る構成としている。When synchronizing a plurality of demultiplexing means, the synchronizing signal from one demultiplexing means is switched by the synchronizing signal switching means and supplied to the plurality of demultiplexing means.
【0012】[0012]
【作用】このような構成により、本発明のテレビ会議用
多地点制御装置は、複数の多重分離手段の同期を取って
記憶手段で記憶した映像信号を同時に読み出すタイミン
グを合わせるため同期信号を切り替えて多重分離手段に
供給しているため、一つの記憶手段に記憶した映像信号
を多地点の会議室装置に同時に送ることができ、その装
置規模が縮小される。With such a structure, the multipoint control apparatus for video conference according to the present invention switches the synchronizing signals in order to synchronize the plurality of demultiplexing means and to simultaneously read the video signals stored in the storage means. Since it is supplied to the demultiplexing means, the video signals stored in one storage means can be simultaneously sent to the conference room devices at multiple points, and the device scale can be reduced.
【0013】[0013]
【実施例】以下、本発明のテレビ会議用多地点制御装置
の実施例を図面を参照して詳細に説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a multipoint control device for video conference according to the present invention will be described in detail below with reference to the drawings.
【0014】図1は、テレビ会議システムに設けられる
テレビ会議用多地点制御装置中の映像処理部の構成を示
している。図1において、この映像処理部は、信号の分
離を行う多重分離部11a、11b、11cと、多重分
離部11a〜11cで分離した映像信号の切り替えを行
う映像信号切り替え部12と、映像信号切り替え部12
で選択された映像信号を一時メモリに蓄えるFIFOメ
モリ13(請求項における一つの記憶手段に対応する)
と、多重分離部11aから入力された同期信号を切り替
えて多重分離部11a〜11cに送出して同期をとるた
めの同期信号切り替え部14とからなる。FIG. 1 shows the configuration of a video processing unit in a video conference multipoint control device provided in the video conference system. In FIG. 1, the video processing unit includes a demultiplexing unit 11a, 11b, 11c for demultiplexing signals, a video signal switching unit 12 for switching the video signals demultiplexed by the demultiplexing units 11a to 11c, and a video signal switching. Part 12
A FIFO memory 13 (corresponding to one storage means in the claims) for temporarily storing the video signal selected by
And a synchronization signal switching unit 14 for switching the synchronization signal input from the demultiplexing unit 11a and sending it to the demultiplexing units 11a to 11c for synchronization.
【0015】次に、この実施例の構成における動作につ
いて説明する。多重分離部11a〜11cで分離された
映像信号は、映像信号切り替え部12に入力され、必要
な映像信号、例えば、発言があった会議室装置に接続さ
れる多重分離部11aからの信号を書き込みクロック信
号(WCLK)のタイミングでFIFOメモリ13に書
き込む。Next, the operation of the configuration of this embodiment will be described. The video signals demultiplexed by the demultiplexing units 11a to 11c are input to the video signal switching unit 12 and a necessary video signal, for example, a signal from the demultiplexing unit 11a connected to the conference room device that has made a statement is written. The data is written in the FIFO memory 13 at the timing of the clock signal (WCLK).
【0016】この場合、多重分離部11aからの同期信
号を同期信号切り替え部14で分配し、多重分離部11
a〜11cに供給して、この多重分離部11a〜11c
のFIFOメモリ13に対する読み出しクロック信号
(RCLK)との同期を取る。In this case, the sync signal from the demultiplexing unit 11a is distributed by the sync signal switching unit 14, and the demultiplexing unit 11 is distributed.
a to 11c to supply the demultiplexing units 11a to 11c.
Of the FIFO memory 13 is synchronized with the read clock signal (RCLK).
【0017】この同期を取って、一つのFIFOメモリ
13から複数の多重分離部11a〜11cが同時に映像
信号切り替え部12を通じて映像信号の読み出しを行
う。In synchronization with this, a plurality of demultiplexing units 11a to 11c simultaneously read out a video signal from one FIFO memory 13 through the video signal switching unit 12.
【0018】この一つのFIFOメモリ13から読み出
した映像信号を三地点の会議室装置に、それぞれ多重分
離部11a〜11cを通じて送出する。The video signal read from the one FIFO memory 13 is sent to the conference room devices at the three points through the demultiplexing units 11a to 11c.
【0019】このように、本実施例によれば、一つFI
FOメモリより複数地点の映像信号の同時読み出しが可
能となり、従前の説明のように、多地点の数だけ必要で
あったFIFOメモリ数を一つに減らすことができる。As described above, according to this embodiment, one FI
It is possible to simultaneously read out video signals from a plurality of points from the FO memory, and as described above, the number of FIFO memories required for the number of points can be reduced to one.
【0020】[0020]
【発明の効果】以上の説明から明らかなように、本発明
のテレビ会議用多地点制御装置は、複数の多重分離手段
の同期を取って記憶手段で記憶した映像信号同時に読み
出すタイミングを合わせるため同期信号を切り替えて多
重分離手段に供給しているため、一つの記憶手段に記憶
した映像信号を多地点の会議室装置に同時に送ることが
でき、その装置規模が縮小できるという効果を有する。As is apparent from the above description, the multipoint control apparatus for video conference according to the present invention synchronizes a plurality of demultiplexing means and synchronizes the timing of simultaneously reading the video signals stored in the storage means. Since the signals are switched and supplied to the demultiplexing means, the video signals stored in one storage means can be simultaneously sent to the conference room devices at multiple points, and the device scale can be reduced.
【図1】本発明のテレビ会議用多地点制御装置の実施例
における構成を示すブロック図FIG. 1 is a block diagram showing the configuration of an embodiment of a multipoint control device for video conference according to the present invention.
【図2】従来のテレビ会議用多地点制御装置の構成を示
すブロック図FIG. 2 is a block diagram showing a configuration of a conventional multipoint control device for video conference.
11a、11b、11c 多重分離部 12 映像信号切り替え部 13 FIFOメモリ 14 同期信号切り替え部 11a, 11b, 11c demultiplexing unit 12 video signal switching unit 13 FIFO memory 14 synchronization signal switching unit
Claims (2)
有する複数の会議室装置との間で映像信号を送受するた
めに多重分離を行う複数の多重分離手段と、上記複数の
多重分離手段からの映像信号を記憶する一つの記憶手段
と、上記多重分離手段からの複数の映像信号を選択して
上記記憶手段に出力し、又は上記記憶手段に記憶した複
数の映像信号を選択して上記多重分離手段に出力するた
めの映像信号切り替え手段と、上記複数の多重分離手段
の同期を取って上記記憶手段で記憶した映像信号を同時
に読み出すタイミングを合わせるため同期信号を切り替
えて上記多重分離手段に供給する同期信号切り替え手段
とを備えるテレビ会議用多地点制御装置。1. A plurality of demultiplexing means for performing demultiplexing for transmitting and receiving a video signal between a plurality of conference room devices having an audio input / output device and a video shooting and broadcasting device, and the plurality of demultiplexing devices. And a plurality of video signals from the demultiplexing means are selected and output to the storage means, or a plurality of video signals stored in the storage means are selected. The video signal switching means for outputting to the demultiplexing means and the plurality of demultiplexing means are synchronized with each other so that the timings at which the video signals stored in the storage means are simultaneously read out are synchronized and the synchronizing signals are switched to the demultiplexing means. A multipoint control device for a video conference, comprising: a synchronizing signal switching means for supplying.
に、一つの多重分離手段からの同期信号を同期信号切り
替え手段で切り替えて上記複数の多重分離手段に供給す
ることを特徴とする請求項1記載のテレビ会議用多地点
制御装置。2. When synchronizing a plurality of demultiplexing means, a synchronizing signal from one demultiplexing means is switched by a synchronizing signal switching means and supplied to the plurality of demultiplexing means. 1. The multipoint control device for video conferencing according to 1.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23678792A JP3282230B2 (en) | 1992-09-04 | 1992-09-04 | Multipoint controller for video conference |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23678792A JP3282230B2 (en) | 1992-09-04 | 1992-09-04 | Multipoint controller for video conference |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0685937A true JPH0685937A (en) | 1994-03-25 |
JP3282230B2 JP3282230B2 (en) | 2002-05-13 |
Family
ID=17005792
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP23678792A Expired - Fee Related JP3282230B2 (en) | 1992-09-04 | 1992-09-04 | Multipoint controller for video conference |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3282230B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6124881A (en) * | 1997-04-25 | 2000-09-26 | Fujitsu Limited | System for generating composed signals of multiple pictures for use in a video conference system |
WO2021131973A1 (en) * | 2019-12-25 | 2021-07-01 | 日立Astemo株式会社 | Disc brake |
-
1992
- 1992-09-04 JP JP23678792A patent/JP3282230B2/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6124881A (en) * | 1997-04-25 | 2000-09-26 | Fujitsu Limited | System for generating composed signals of multiple pictures for use in a video conference system |
WO2021131973A1 (en) * | 2019-12-25 | 2021-07-01 | 日立Astemo株式会社 | Disc brake |
Also Published As
Publication number | Publication date |
---|---|
JP3282230B2 (en) | 2002-05-13 |
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