Selectively-Expandable Speakerphone System and Method

• US 20090214010A1
• Filed: 02/21/2008
• Published: 08/27/2009
• Est. Priority Date: 02/21/2008
• Status: Active Grant

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Lewis, Thomas F., Vernon, Kevin S. D., Langgood, John K., Reinberg, Kevin Michael
• Granted Patent: US 8,265,240 B2
• Time in Patent Office: Days
• US Class Current: 379/110.10
• CPC Class Codes: H04R 27/00 Public address systems circuits for preventing acoustic reaction H04R3/02; circuits for distributing signals to loudspeakers H04R3/12; monitoring or testing arrangements for public address systems H04R29/007; amplifiers H03F

Abstract

According to one embodiment, a selectively-expandable speakerphone system allows one or more portable computers to automatically, wirelessly interface with a speakerphone console via an audio access point. A scheduling module initiates the conference call at a scheduled time, whereupon the wireless network interface of each portable computer is automatically switched to an SSID uniquely associated with the audio access point, for connecting to the speakerphone console. The audio signals generated by the laptop microphones are mixed with any audio signal generated by an optional microphone on the speakerphone console, and the mixed audio signals are transmitted over the telephone line. Incoming audio signals are passed to the speakerphone console and wirelessly transmitted to the portable computers for substantially simultaneous playback on the respective loudspeakers.

Claims

1. A selectively expandable speakerphone system, comprising:

a speakerphone console connected to a telephone system for transmitting and receiving audio signals over a telephone line;

one or more portable computers each having an included microphone and loudspeaker, and a wireless networking interface configured for communicating on any of a plurality of distinct wireless local area networks; and

a wireless audio access point for connecting the portable computers with the speakerphone console on a selected one of the wireless local area networks, communicating audio signals generated by the microphone to the speakerphone console for substantially simultaneous transmission over the telephone line, and communicating audio signals received over the telephone line by the speakerphone console to all of the one or more portable computers for substantially simultaneous playback on the loudspeakers.

2. The system of claim 1, further comprising:

an audio control applet disposed on each portable computer, configured for automatically diverting the audio signals generated by the microphone to the speakerphone console for transmission over the telephone line and for automatically diverting audio signals received over the telephone line by the speakerphone console to the portable computer when the portable computer is connected to the selected wireless local area network.

3. The system of claim 2, wherein the audio control applet is further configured to selectively adjust one or both of microphone sensitivity and loudspeaker volume in response to user input.

4. The system of claim 1, wherein each of the plurality of wireless local area networks on which the wireless network interface is configured for communicating is characterized by a distinct service set identifier.

5. The system of claim 4, further comprising an additional wireless network interface configured for independently communicating on another of the wireless local area networks while remaining connected to the speakerphone console over the selected wireless local area network.

6. The system of claim 1, wherein the portable computers are laptop computers.

7. The system of claim 1, further comprising a server in communication with the portable computers and the audio access point;

and

a scheduling module disposed on one or both of the server and the portable computers for scheduling call times and automatically causing the portable computers to connect to the speakerphone console using wireless audio access point at the scheduled call times.

8. The system of claim 7, wherein the scheduling application is further configured to automatically initiate telephone calls on the telephone system at the scheduled times.

9. A laptop computer teleconferencing system, comprising:

a plurality of laptop computers each having a microphone, a loudspeaker, and a wireless networking interface configured for communicating on any of a plurality of distinct wireless local area networks;

a wireless audio access point for connecting the laptop computers with a telephone system on a selected one of the wireless local area networks, communicating audio signals generated by the microphones to the telephone system for substantially simultaneous transmission over a telephone line, and communicating audio signals received over the telephone line by the telephone system to all of the laptop computers for substantially simultaneous playback on the loudspeakers.

10. The system of claim 9, further comprising:

an audio control applet disposed on each laptop computer, configured for automatically diverting the audio signals generated by the microphone to the telephone system for transmission over the telephone line and for automatically diverting audio signals received over the telephone line by the telephone system to the laptop computer when the laptop computer is connected to the selected wireless local area network.

11. The system of claim 10, wherein the audio control applet is further configured to selectively adjust one or both of microphone sensitivity and loudspeaker volume in response to user input.

12. The system of claim 9, wherein each of the plurality of wireless local area networks on which the wireless network interface is configured for communicating is characterized by a distinct service set identifier.

13. The system of claim 12, wherein each wireless network interface is configured for independently communicating on another of the wireless local area networks while remaining connected to the telephone system over the selected wireless local area network.

14. The system of claim 9, wherein the laptop computers are laptop computers.

15. The system of claim 9, further comprising:

a server in communication with the laptop computers and the audio access point; and

a scheduling application disposed on one or both of the server and the portable computers for scheduling call times and automatically causing the laptop computers to connect to the telephone system using the wireless audio access point at the scheduled call times.

16. The system of claim 15, wherein the scheduling application is further configured to automatically initiate telephone calls on the telephone system at the scheduled times.

17. A computer program product comprising a computer usable medium including computer usable program code for conducting a conference call, the computer program product including:

computer usable program code for connecting a plurality of portable computers to a speakerphone console on a wireless local area network;

computer usable program code for generating an audio signal using the microphone on each portable computer;

computer usable program code for wirelessly routing and transmitting the audio signal generated by the microphone of each portable computer to the speakerphone console for substantially simultaneous transmission over a telephone line; and

computer usable program code for receiving and routing an audio signal received over the telephone line by the speakerphone console to the loudspeaker of each portable computer for substantially simultaneous playback on the loudspeakers.

18. The computer program product of claim 17, further comprising:

computer usable program code for automatically diverting the audio signals generated by the microphones to the speakerphone console and for automatically diverting the audio signal received over the telephone line to the portable computers when the portable computers are connected to the selected wireless local area network.

19. The computer program product of claim 17, further comprising:

computer usable program code for scheduling call times; and

computer usable program code for automatically causing the portable computers to wirelessly connect to the speakerphone console at the scheduled call time.

20. The computer program product of claim 19, further comprising:

computer usable program code for automatically initiating telephone calls on the telephone system at the scheduled call times.