Conference bridge which decodes and responds to control information embedded in audio information

• US 7,787,605 B2
• Filed: 03/15/2005
• Issued: 08/31/2010
• Est. Priority Date: 12/31/2001
• Status: Expired due to Fees

• Current Assignee: Polycom Incorporated (Plantronics, Inc.)
• Original Assignee: Polycom Incorporated (Plantronics, Inc.)
• Inventors: Rodman, Jeffrey
• Primary Examiner(s): Gauthier; Gerald
• Application Number:
  US11/080,994
• Publication Number:
  US 20050213732A1
• Time in Patent Office: 1,995 Days
• Field of Search: 370/260, 370/261, 370/264, 370/259, 370/337, 370/401, 379/88.11, 379/202.01, 709/204, 348/14.08, 348/14.12, 348/734, 382/239, 713/300
• US Class Current: 379/202.01
• CPC Class Codes: H04L 12/4625 Single bridge functionality, e.g. connection of two networks over a single bridge
• CPC Class Codes: H04L 12/66 Arrangements for connecting between networks having differing types of switching systems, e.g. gateways
• CPC Class Codes: H04M 2203/5036 using conference for collection of feedback
• 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: H04Q 2213/1309 Apparatus individually associated with a subscriber line, line circuits
• CPC Class Codes: H04Q 2213/13106 Microprocessor, CPU
• CPC Class Codes: H04Q 2213/1324 Conference call

Abstract

Disclosed herein are methods, systems, and devices for improved audio, video, and data conferencing. The present invention provides a conferencing system comprising a plurality of endpoints communicating data including audio data and control data according to a communication protocol. A local conference endpoint may control or be controlled by a remote conference endpoint. Data comprising control signals may be exchanged between the local endpoint and remote endpoint via various communication protocols. In other embodiments, the present invention provides for improved bridge architecture for controlling functions of conference endpoints including controlling functions of the bridge.

Claims

1. A conference bridge for multipoint conferencing among a plurality of endpoints via one or more networks, the bridge comprising:

a network interface for exchanging audio data with the plurality of endpoints, at least one endpoint providing audio data containing embedded control data, the control data being substantially humanly inaudible;

a control data extraction module coupled to said network interface to extract the control data from the audio data;

a control data decode module coupled to said control data extraction module to decode the extracted control data;

a control data handling module coupled to said control data decode module to interpret the control data and perform responsive operations; and

an audio unit coupled to said network interface, said audio unit receiving the audio data, mixing the received audio data, and transmitting the mixed audio data.

2. The conference bridge of claim 1, further comprising:

a control data inclusion module coupled to said network interface and coupled to said control data handling module to embed control data into audio data, wherein said control data handling module provides control data for inclusion in audio data.

3. The conference bridge of claim 2, wherein said control data handling module provides control data for inclusion in audio data for selected endpoints based on the control data interpreted by said control data handling module.

4. The conference bridge of claim 2, further comprising:

a bridge control unit coupled to said control data handling module;

wherein said control data handling module provides control data for inclusion in audio data based on data provided by said bridge control unit.

5. The conference bridge of claim 1, wherein said network interface is configured to work with one or both of an IP network or a PSTN.

6. The conference bridge of claim 5, wherein if the network interface is configured to work with the PSTN, then audio data and control data are provided according to a protocol selected from the group consisting of modem data, ISDN, and analog.

7. A conferencing system comprising:

a plurality of endpoints for exchanging audio data, at least one of said plurality of endpoints embedding control data in the audio data;

one or more networks providing communication capability for said plurality of endpoints; and

a conference bridge for multipoint conferencing, said bridge including;

a network interface for exchanging audio data with the plurality of endpoints, at least one endpoint providing audio data containing embedded control data, the control data being substantially humanly inaudible;

a control data extraction module coupled to said network interface to extract the control data from the audio data;

a control data decode module coupled to said control data extraction module to decode the extracted control data;

a control data handling module coupled to said control data decode module to interpret the control data and perform responsive operations; and

an audio unit coupled to said network interface, said audio unit receiving the audio data, mixing the received audio data and transmitting the mixed audio data.

8. The conferencing system of claim 7, wherein the bridge further comprises:

a control data inclusion module coupled to said network interface and coupled to said control data handling module to embed control data into audio data, wherein said control data handling module provides control data for inclusion in audio data.

9. The conferencing system of claim 8, wherein said control data handling module provides control data for inclusion in audio data for selected endpoints based on the control data interpreted by said control data handling module.

10. The conferencing system of claim 8, wherein the bridge further comprises:

a bridge control unit coupled to said control data handling module;

wherein said control data handling module provides control data for inclusion in audio data based on data provided by said bridge control unit.

11. The conferencing system of claim 7, wherein said network interface is configured to work with one or both of an IP network or a PSTN.

12. The conferencing system of claim 11, wherein if the network interface is configured to work with the PSTN, then audio data and control data are provided according to a protocol selected from the group consisting of modem data, ISDN, and analog.

13. A method for multipoint conferencing among a plurality of endpoints connected to a multipoint conference bridge via one or more networks, the method comprising the steps of:

exchanging audio data between the bridge and the plurality of endpoints, at least one endpoint providing audio data containing embedded control data, the control data being substantially inaudible;

extracting the control data from the audio data;

decoding the extracted control data;

interpreting the control data;

performing responsive operations;

receiving audio data;

mixing the audio data; and

transmitting the mixed audio data.

14. The method of claim 13, further comprising the step of:

embedding control data into audio data.

15. The method of claim 14, wherein said embedded control data is included in audio data destined for selected endpoints based on the interpreting of the control data.

16. The method of claim 14, further comprising the step of:

providing control data for inclusion in audio data based on data provided by a bridge control unit.

17. The method of claim 13, wherein the bridge comprises a network interface configured to work with one or both of an IP network or a PSTN.

18. The method of claim 17, wherein if the network interface is configured to work with the PSTN, then audio data and control data are provided according to a protocol selected from the group consisting of modem data, ISDN, and analog.