System for call request which results in first and second call handle defining call state consisting of active or hold for its respective AV device

• US 5,896,500 A
• Filed: 06/07/1996
• Issued: 04/20/1999
• Est. Priority Date: 10/01/1993
• Status: Expired due to Term

• Current Assignee: Pragmatus AV LLC (Pragmatus, LLC)
• Original Assignee: Collaboration Properties Incorporated
• Inventors: Lantz, Keith A., Lauwers, J. Chris, Burns, Emmett R., Burnett, Gerald J., Ludwig, Lester F.
• Primary Examiner(s): Lee, Thomas C.
• Assistant Examiner(s): Chen, Anderson I.
• Application Number:
  US08/659,952
• Time in Patent Office: 1,047 Days
• Field of Search: 395/200.34, 370/261, 370/264, 370/265
• US Class Current: 709/204
• CPC Class Codes: G06Q 10/10 Office automation; Time management
• CPC Class Codes: H04L 12/1813 for computer conferences, e.g. chat rooms instant messaging H04L51/04; protocols for multimedia communication H04L65/1101; arrangements for multi-party communication H04L65/403; telephonic conference arrangements H04M3/56; television conference systems H04N7/15
• CPC Class Codes: H04L 12/1818 Conference organisation arrangements, e.g. handling schedules, setting up parameters needed by nodes to attend a conference, booking network resources, notifying involved parties
• CPC Class Codes: H04L 12/1822 Conducting the conference, e.g. admission, detection, selection or grouping of participants, correlating users to one or more conference sessions, prioritising transmission
• CPC Class Codes: H04L 12/1827 Network arrangements for conference optimisation or adaptation
• CPC Class Codes: H04L 12/1831 Tracking arrangements for later retrieval, e.g. recording contents, participants activities or behavior, network status
• CPC Class Codes: H04L 12/1836 with heterogeneous network architecture
• CPC Class Codes: H04L 12/185 with management of multicast group membership
• CPC Class Codes: H04L 51/00 User-to-user messaging in packet-switching networks, transmitted according to store-and-forward or real-time protocols, e.g. e-mail
• CPC Class Codes: H04L 51/04 Real-time or near real-time messaging, e.g. instant messaging [IM]
• CPC Class Codes: H04L 51/10 Multimedia information
• CPC Class Codes: H04L 65/1101 Session protocols
• CPC Class Codes: H04L 65/4038 with floor control
• CPC Class Codes: H04L 65/80 Responding to QoS
• CPC Class Codes: H04L 67/14 Session management for real-time applications in data packet communications networks H04L65/1066
• CPC Class Codes: H04L 67/75 Indicating network or usage conditions on the user display
• CPC Class Codes: H04L 9/40 Network security protocols
• CPC Class Codes: H04M 2201/38 Displays
• CPC Class Codes: H04M 2203/5018 Initiating a conference during a two-party conversation, i.e. three-party-service or three-way-call computer conference organisation arrangements H04L12/1818
• CPC Class Codes: H04M 2203/5027 Dropping a party from a conference conducting a computer conference, e.g. admission detection H04L12/1822
• CPC Class Codes: H04M 3/42221 : Conversation recording systems at the subscriber's set H04M1/656
• CPC Class Codes: H04M 3/42323 : PBX's with CTI arrangements
• CPC Class Codes: H04M 3/4285 : Notifying, informing or entertaining a held party while on hold, e.g. Music On Hold
• CPC Class Codes: H04M 3/5307 : for recording messages comprising any combination of audio and non-audio components
• CPC Class Codes: H04M 3/562 : where the conference facilities are distributed
• CPC Class Codes: H04M 3/563 : User guidance or feature selection
• CPC Class Codes: H04M 3/564 : whereby the feature is a sub-conference
• CPC Class Codes: H04M 3/567 : Multimedia conference systems
• CPC Class Codes: H04M 7/006 : Networks other than PSTN/ISDN providing telephone service, e.g. Voice over Internet Protocol (VoIP) , including next generation networks with a packet-switched transport layer H04L65/00 takes precedence; aspects not specific to the type of network H04M3/00; special services in those networks H04M3/42
• CPC Class Codes: H04M 7/12 : for working between exchanges having different types of switching equipment, e.g. power-driven and step by step or decimal and non-decimal
• CPC Class Codes: H04N 7/147 : Communication arrangements, e.g. identifying the communication as a video-communication, intermediate storage of the signals selecting H04Q
• CPC Class Codes: H04N 7/148 : Interfacing a video terminal to a particular transmission medium, e.g. ISDN
• CPC Class Codes: H04N 7/15 : Conference systems
• CPC Class Codes: H04N 7/152 : Multipoint control units therefor
• CPC Class Codes: H04Q 2213/1305 : Software aspects
• CPC Class Codes: H04Q 2213/13093 : Personal computer, PC
• CPC Class Codes: H04Q 2213/13175 : Graphical user interface [GUI], WWW interface, visual indication
• CPC Class Codes: H04Q 2213/1319 : Amplifier, attenuation circuit, echo suppressor
• CPC Class Codes: H04Q 2213/1322 : PBX
• CPC Class Codes: H04Q 2213/1324 : Conference call
• CPC Class Codes: H04Q 2213/1326 : Consultation call, broker's call, call hold, toggling
• CPC Class Codes: H04Q 2213/1332 : Logic circuits
• CPC Class Codes: H04Q 2213/13337 : Picturephone, videotelephony
• CPC Class Codes: H04Q 2213/13389 : LAN, internet

Abstract

A teleconferencing/videoconferencing system has (1) a plurality of AV device, each capable of originating and reproducing user related audio and video signals; (2) a plurality of communications ports, each supporting the switch connections of video in, video out, audio in, and audio out; and (3) a communication path arranged for transport of audio and video signals. The system controls communications, over the communications path, between two of the AV devices by creating a first and second call handles, respectively associated with the two AV devices. Each call handle defines a call state (Either active and/or hold), and the AV device'"'"'s port'"'"'s switch connections involved in the communication connection. The system also allows a user to remotely put another caller on hold or remotely disconnect another caller.

Claims

1. A teleconferencing system comprising:

(a) a plurality of AV devices, each capable of

(i) originating and reproducing

(1) user related audio and video signals;

(b) a plurality of communications ports, each supporting

(i) at least one of the group of switch connections consisting of

(1) video in, video out, audio in and audio out; and

(c) at least one communication path,

(i) arranged for transport

(1) of audio and video signals,

wherein the system is configured to

(i) to control a communication connection

(1) between two of the AV devices,

(2) over the communication path,

(ii) by creating,

(1) as a result of a call request,

(2) at least a first call handle,

i. associated with one of the two AV devices and, thereafter,

(3) at least a second call handle,

i. associated with the other AV device,

(4) each call handle defining,

i. for its respective AV device,

ii. a call state, being at least one of the group consisting of active and hold states; and

iii. the port switch connections involved in the communications connection.

2. The system according to claim 1, further comprising

(a) at least one signal processor, including

(i) at least three communications ports

wherein the system is further configured to

(i) control communications connections among

(1) three or more AV devices and

(2) one of the signal processors

(ii) by generating a plurality of call handles

(1) one associated with each of the three or more AV devices and

(2) one associated with each of the three or more ports on the signal processor.

3. The teleconferencing system according to claim 2, wherein the system is configured:

(a) to detect and add

(i) a fourth AV device

(ii) to an existing teleconference communication,

(b) by creating a call handle

(i) associated with each of the fourth device and with a fourth device associated port at the signal processor.

4. The teleconferencing system of claim 2, wherein the system is further configured to

(a) allow any device user

(i) active in a teleconference communication

(1) with at least one other device user,

(b) to do at least one of the group consisting of

(i) place on hold,

(1) at least one of the other device users,

(2) by causing the system to change the state, of at least one call handle associated with that other device user, from an active to a hold state,

(ii) disconnect

(1) at least one of the other users;

and

(iii) select

(2) a new user

i. from among a plurality of potential users and

(3) add the new user

i. to an active teleconference communication,

ii. by causing the system to generate at least one call handle associated with that new user.

5. The teleconferencing system of claim 1, wherein the system is further configured to:

(a) detect,

(i) during a first teleconference communication

(1) between users of first and second of the AV devices,

(ii) an attempt

(1) from a third user

(2) to initiate a second teleconference communication

i. with the second user,

(b) notify

(i) the second user

(ii) of the attempt; and

(c) allow

(i) the second user

(ii) to add

(1) the third device

(2) to the first communication.

6. The teleconferencing system of claim 1, wherein the system can

(a) support a maximum number of N communications

(i) for an AV device;

and

(b) enable a user,

(i) operating that device,

(ii) to select N of M possible communications,

(iii) when faced with M possible communications,

(1) where M is greater than N.

7. The teleconferencing system according to claim 1, wherein

(a) the call handle is created immediately prior to the communication connection being established.

8. The teleconferencing system according to claim 1, wherein

(a) the communication connection

(i) becomes active if, and only if, both call handles associated with the two AV devices have active states;

and

(ii) goes on hold if the call handle associated with either of the two AV devices has a hold state.

9. The teleconferencing system according to claim 1, wherein

(a) any call handle includes

(i) address information associated with the communication connection.

10. The teleconferencing system of claim 1, wherein

(a) each call handle can also define a state of one of the group consisting of

(i) idle and ringing states.

11. A method of conducting a teleconference using a system including:

a plurality of AV devices, each capable of

originating and reproducing

audio and video signals,

a plurality of communications ports each supporting

at least one of the group of switch connections consisting of

video in, video out, audio in and audio out; and

at least one communication path

arranged for transport of audio and video signals,

the method comprising the steps of

(a) controlling communication connections

(i) between two of the AV devices,

(ii) over the communication path,

(b) by creating,

(i) as a result of a call request,

(ii) at least a first call handle,

(1)associated with one of the two AV devices and, thereafter,

(iii) at least a second call handle

(1) associated with the other AV device,

(iv) each call handle defining,

(1) for its respective AV device,

(2) a call state being at least one of the group consisting of active and hold states, and

(3) the port switch connections involved in the communications connection.

12. The method according to claim 11, wherein the system further includes

at least one signal processor and

wherein in controlling communication connections between three or more AV devices, the method further comprises the steps of

(a) generating a plurality of call handles, (i) one associated with each of the three or more AV devices and

(ii) one associated with each of the three or more ports on the signal processor.

13. The method of claim 12, further comprising the steps of:

(a) detecting and adding

(i) a fourth user

(ii) to an existing teleconference communication

(b) by creating a call handle

(i) associated with each of the fourth device with a fourth-device associated port at the signal processor.

14. The method of claim 11, wherein the method further comprises the steps of:

(a) detecting,

(i) during a first teleconference communication

(1) between first and second AV device users,

(ii) an attempt

(1) by a third user

(2) to initiate a second teleconference communication

(3) with the second user,

(b) notifying

(i) the second user

(ii) of the attempt; and

(c) allowing

(i) the second user

(ii) to add

(1) the third caller

(2) to the first teleconference communication.

15. The method of claim 11, further comprising the steps of

(a) allowing any device user

(i) active in a teleconference communication

(1) with at least one other user,

(ii) to do at least one of the group consisting of:

(1) place on hold,

i. at least one of the other device users;

ii. by causing the system to change the state, of at least one call handle associated with that other user(s), from active to hold;

(2) disconnect

i. at least one of the other users; and

(3) select

i. a new user

i. from among a plurality of potential users and

ii. add the new user

i. to an active teleconference communication,

iii. by causing the system to generate at least one call handle associated with that new user.

16. The method of claim 11, wherein the system can support a maximum number of N communications

for an AV device;

the method further comprising the steps of;

(a) enabling a user,

(i) operating that device,

(b) to select N of M possible communications,

(i) when faced with M possible communications

(1) where M is greater than N.

17. The method according to claim 11, wherein

(a) the call handle is created immediately prior to the communication connection being established.

18. The teleconferencing system according to claim 11, wherein

(a) the communication connection

(i) becomes active if, and only if, both call handles associated with the two AV devices have active states;

and

(ii) goes on hold if the call handle associated with either of the two AV devices has a hold state.

19. The method according to claim 11, wherein

(a) any call handle includes

(i) address information associated with the communication connection.

20. The method of claim 11, wherein

(a) each call handle can also define a state of one of the group consisting of

(i) idle and ringing states.