Multi-site video conference control system and method for controlling video conference terminals via communication lines

• US 5,818,513 A
• Filed: 05/17/1994
• Issued: 10/06/1998
• Est. Priority Date: 07/29/1993
• Status: Expired due to Term

• Current Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Original Assignee: Fujitsu Limited
• Inventors: Hatanaka, Masanobu, Sano, Shoichi, Natori, Hiroaki, Tamuki, Shoichi, Okazaki, Reiko, Takei, Hitoshi
• Primary Examiner(s): Flynn, Nathan J.
• Application Number:
  US08/243,835
• Time in Patent Office: 1,603 Days
• Field of Search: 348/15 OR, 348/14, 348/13, 348/16, 348/17, 348/12, 379/158, 379/202, 379/251, 370/62
• US Class Current: 348/14.09
• CPC Class Codes: H04N 7/152 Multipoint control units therefor

Abstract

A multi-site video conference control system comprising a number of video conference terminals respectively situated at a number of sites and a video conference control unit for controlling a video conference. A communication line interface provided at each terminal makes a single calling with respect to the video conference control unit. A connection data section, which is provided at each terminal, manages connection data for other terminals to be connected and transmits the connection data to the video conference control unit. A control calling section, which is provided at the video conference control unit, calls the terminal corresponding to the connection data to be transmitted from the connection data section, based on the single calling. A connection controller, which is provided at the video conference control unit, connects the calling terminal, whose communication line interface made the single calling, and the other terminals called by the control calling section, with communication lines.

Claims

1. A system for controlling a multi-site video conference over communication lines, comprising:

video conference terminals respectively situated at a number of sites; and

a video conference control unit to interconnect said video conference terminals via the communication lines to open the multi-site video conference;

each of said video conference terminals including;

communication line interface means for calling said video conference control unit; and

connection data means for managing connection data for all of said video conference terminals to be connected and for transmitting, at one time, all the connection data of selected video conference terminals to said video conference control unit; and

said video conference control unit including;

control calling means for calling, at one time, all the selected video conference terminals corresponding to the connection data transmitted from said connection data means, based on the calling by said communication line interface means of one of said video conference terminals; and

connection controlling means for connecting the one of said video conference terminals whose communication line interface means called said video conference control unit and the selected video conference terminals called by said control calling means with the communication lines.

2. A multi-site video conference system as claimed in claim 1,

wherein said video conference control unit further includes a number of port means to be connected to the communication lines, and

wherein when any of said port means remain unoccupied, said control calling means calls the selected video conference terminals, which correspond to the connection data and are to be connected, via any of said port means which remain unoccupied, and when all of said port means are already occupied, said control calling means determines that the multi-site video conference cannot be opened.

3. A multi-site video conference control system as claimed in claim 1, wherein said video conference control unit further includes grouping means for dividing said video conference terminals into groups according to group data and for associating the respective group data with said video conference terminals of the corresponding group, and said control calling means calls the selected video conference terminals corresponding to the group data from said grouping means.

4. A multi-site video conference control system as claimed in claim 1, wherein said connection data are inherent dial numbers given to the respective terminals.

5. A system for controlling a multi-site video conference over communication lines, comprising:

video conference terminals respectively situated at a number of sites;

a video conference control unit to interconnect said video conference terminals via the communication lines and to open the multi-site video conference; and

a control terminal to manage connection data for all of said video conference terminals to be connected and to transmit the connection data of selected video conference terminals to said video conference control unit, said control terminal including calling command means for supplying a calling command;

said video conference control unit including;

control port means for receiving the connection data and the calling command transmitted from said control terminal;

control calling means for receiving the calling command and the connection data from said control terminal via said control port means and for calling all of the selected video conference terminals corresponding to the connection data; and

connection controlling means for connecting all of the selected video conference terminals corresponding to the connection data called by said control calling means, with the communication lines.

6. A multi-site conference control system as claimed in claim 5,

wherein said video conference control unit further comprises a number of port means to be connected with the communication lines, and

wherein when any of said port means remain unoccupied, said control calling means calls the selected video conference terminals, which correspond to the connection data and are to be connected, via any of said port means which remain unoccupied, and when all of said port means are already occupied, said control calling means determines that the multi-site video conference cannot be opened.

7. A multi-site video conference control system as claimed in claim 5,

wherein said video conference control unit further includes grouping means for dividing said video conference terminals into groups according to group data and for associating the respective group data with said video conference terminals of the corresponding group, and

wherein said control calling means calls the selected video conference terminals corresponding to the group data from said grouping means.

8. A multi-site video conference control system as claimed in claim 5, wherein said connection data are inherent dial numbers given to the respective terminals.

9. A multi-site video conference control system as claimed in claim 5, wherein said control terminal includes setting means for setting at least one of a start time and an ending time of the video conference preset the video conference.

10. A multi-site video conference control system as claimed in claim 5, wherein said control terminal includes calling command means for supplying a calling command to said control calling means via said control port means.

11. A method of controlling a multi-site video conference to be held by connecting video conference terminals, which are respectively situated at a number of sites, with a video conference control unit via communication lines, said method comprising:

managing connection data for all of the video conference terminals to be connected;

calling the video conference control unit from one of the video conference terminals and transmitting, at one time, all the connection data of selected video conference terminals to the video conference control unit;

calling, by the video conference control unit, at one time, all of the selected video conference terminals corresponding to the connection data transmitted to the video conference control unit based on said calling by the one of the video conference terminals; and

connecting, by the video conference control unit using the communication lines to open the multi-site video conference, the one of the video conference terminals from which said video conference control unit is called and all of the selected video conference terminals called in said calling by the video conference control unit.

12. A multi-site video conference controlling method as claimed in claim 11, wherein said calling by said video conference control unit comprises:

calling all of the selected video conference terminals, which correspond to the connection data and are to be connected, via any unoccupied ports to be connected with the communication lines; and

determining, when all of the ports are already occupied, that the multi-site video conference cannot be opened.

13. A multi-site video conference controlling method as claimed in claim 11,

further comprising dividing the video conference terminals into groups according to group data and associating respective group data with each of the video conference terminals of a corresponding group, and

wherein said calling by said video conference control unit includes calling the selected video conference terminals corresponding to the group data.

14. A multi-site video conference controlling method as claimed in claim 11, further comprising outputting connection data, including inherent dial numbers, to respective terminals.

15. A method of controlling a multi-site video conference to be held by connecting video conference terminals, which are respectively situated at a number of sites, with a video conference control unit via communication lines, said method comprising the steps of:

(a) managing, in a control terminal, connection data for all of the video conference terminals to be connected and transmitting, at one time, all the connection data of selected video conference terminals to the video conference control unit;

(b) supplying the connection data, which is to be transmitted, to a control port;

(c) supplying a calling command from the control terminal to the video conference control unit via the control port;

(d) calling, at one time, all of the selected video conference terminals corresponding to the connection data supplied from the control ports; and

(e) connecting all of the selected video conference terminals corresponding to the connection data, called in said calling in step (d), with the communication lines.

16. A multi-site video conference controlling method as claimed in claim 15, wherein said calling in step (d) comprises the substeps of:

(d1) calling all of the selected video conference terminals, which correspond to the connection data and are to be connected, via any unoccupied ports to be connected with the communication lines; and

(d2) determining, when all ports are already occupied, that the multi-site video conference cannot be opened.

17. A multi-site video conference controlling method as claimed in claim 15,

further comprising the step of (f) dividing the video conference terminals into groups according to group data and associating respective group data with each of the video conference terminals of a corresponding group, and

wherein said calling in step (d) includes calling the selected video conference terminals corresponding to the group data.

18. A multi-site video conference controlling method as claimed in claim 15, further comprising the step of (f) outputting connection data, including inherent dial numbers, to respective terminals.

19. A multi-site video conference controlling method as claimed in claim 15, wherein said managing in step (a) includes setting a start time and/or an ending time of the video conference to preset the video conference.

20. A video conference control unit, for opening a multi-site video conference, connectable via communication lines to video conference terminals respectively situated at a number of sites, the video conference terminals including a calling terminal, said video conference control unit comprising:

control calling means for calling, at one time, selected video conference terminals corresponding to connection data transmitted from the calling terminal; and

connection control means for connecting the calling terminal and the selected video conference terminals called by said control calling means, with the communication lines.

21. A video conference control unit as claimed in claim 20,

further comprising a number of port means to be connected to the communication lines, and

wherein, when any of said port means remain unoccupied, said control calling means calls all the selected video conference terminals, which correspond to the connection data and are to be connected, via any of said port means which remain unoccupied, and when all of said port means are already occupied, said control calling means determines that the multi-site video conference cannot be opened.

22. A video conference control unit as claimed in claim 20,

further comprising grouping means for dividing the video conference terminals into groups according to group data and for associating respective group data with the video conference terminals of each corresponding group, and

wherein said control calling means calls the selected video conference terminals corresponding to the group data defined by said grouping means.

23. A video conference terminal connectable by a video conference control unit to a plurality of video conference terminals respectively situated at a number of sites, comprising:

communication line interface means for calling the video conference control unit to open a multi-site video conference; and

connection data means for managing connection data for all of the video conference terminals to be connected with the video conference control unit and for transmitting, at one time, all the connection data to the video conference control unit.

24. A video conference control unit, for opening a multi-site video conference, connectable via communication lines to a control terminal and video conference terminals respectively situated at a number of sites, comprising:

control port means for inputting connection data of selected video conference terminals to be connected and a calling command transmitted from the control terminal which manages the calling command and the connection data for all of the video conference terminals to be connected;

control calling means for calling, at one time all of the selected video conference terminals to be connected corresponding to the connection data supplied from said control port means; and

connection control means for connecting via the communication lines all of the selected video conference terminals to be connected, which are called by said control calling means based on the connection data.

25. A video conference control unit as claimed in claim 24,

further comprising a number of port means to be connected with the communication lines, and

wherein, when any of said port means remain unoccupied, said control calling means calls all the selected video conference terminals, which correspond to the connection data and are to be connected, via any of said port means which remain unoccupied, and when all of said port means are already occupied, said control calling means determines that the multi-site video conference cannot be opened.

26. A video conference control unit as claimed in claim 24,

further comprising grouping means for dividing the video conference terminals into groups according to group data and for associating respective group data with the video conference terminals of each corresponding group, and

wherein said control calling means calls selected video conference terminals corresponding to the group data defined by said grouping means.

27. A control terminal device causing the connection of video conference terminals, respectively situated at a number of sites, by a video conference control unit which opens a video conference, comprising:

connection data means for managing connection data for all of the video conference terminals which are to be interconnected and for supplying the connection data of selected video conference terminals to be interconnected to the video conference control unit;

call command means for supplying to the video conference control unit a call command for calling all of the selected video conference terminals corresponding to the connection data; and

setting means for setting time data including at least one of a start time and an ending time of the video conference to preset the video conference and for outputting the time data to the video conference control unit.

28. A system for controlling a multi-site video conference using communication lines, comprising:

a plurality of video conference terminals respectively located at a plurality of sites;

connection data control means for managing connection data for all of said video conference terminals to be interconnected and outputting a calling command and the connection data of selected video conference terminals to be interconnected; and

a video conference control unit for interconnecting the selected video conference terminals via the communication lines to open the video conference based on the connection data and the calling command, said video conference control unit including

control calling means for calling all of the selected video conference terminals corresponding to the connection data; and

connection controlling means for connecting the selected video conference terminals called by said control calling means with the communication lines.

29. A system for controlling a multi-site video conference according to claim 28, wherein said plurality of video conference terminals comprises:

communication line interface means provided at each of said plurality of video conference terminals for calling said video conference control unit.

30. A system for controlling a multi-site video conference according to claim 29, wherein said plurality of video conference terminals each further comprises a CRT.

31. A system for controlling a multi-site video conference according to claim 30, wherein said video conference control unit further comprises a control port, said system further comprising:

a personal computer connected to said control port, said personal computer including;

a data connection unit;

a call command section; and

a timer.

32. A system for controlling a multi-site video conference according to claim 30, wherein said plurality of video conference terminals further comprises:

connection data means provided at each of said plurality of video conference terminals for managing connection data for one or more other terminals to be connected and for transmitting the connection data to said video conference control unit.

33. A system for controlling a multi-site video conference according to claim 28, wherein said video conference control unit further comprises a control port, said system further comprising a data processing unit connected to said control port.