Video conferencing apparatus for group video conferencing

• US 6,072,522 A
• Filed: 06/04/1997
• Issued: 06/06/2000
• Est. Priority Date: 06/04/1997
• Status: Expired due to Fees

• Current Assignee: CGC Designs
• Original Assignee: CGC Designs
• Inventors: Ippolito, Peter M., Cook, Caroline M.
• Primary Examiner(s): Le, Huyen
• Assistant Examiner(s): Ramakrishnaiah, Melur
• Application Number:
  US08/868,798
• Time in Patent Office: 1,098 Days
• Field of Search: 348/15, 348/16, 348/20, 348/169
• US Class Current: 348/14.1
• CPC Class Codes: H04N 7/142 Constructional details of the terminal equipment, e.g. arrangements of the camera and the display
• CPC Class Codes: H04N 7/15 Conference systems

Abstract

A group video conferencing apparatus for the purposes of facilitating a video conference involving a group of participants which are azymuthly located about said apparatus is described. Means are are provided for the identification of a principle speaker and for the positioning of the video camera so as to capture the image of the principle speaker. Identification of the azymuthal orientation of the principle speaker is realized through the electronic processing of audio signals generated by the group of participants, and the azymuthal positioning of the video camera is adjusted through electromechanical means so as to capture the image of the identified principle speaker.

Claims

1. An apparatus for the purpose of determining the azimuthal position of a speaker from within a group of a first number of participants, said participants being azimuthally positioned about said apparatus, said apparatus comprising:

a means for the determination of the azimuthal position of said speaker from within said group of participants, wherein said determination of said azimuthal position of said speaker is realized through the electronic processing of audio signals generated by said group of participants, wherein said means for said determination of the azimuthal position of said speaker is comprised of a generally circular array of a second number of audio microphones, wherein said second number of said audio microphones is not correlated to said first number of said participants, said audio microphones being affixed to a common base element, said audio microphones being unattached from said participants, said audio microphones being located so as to capture said audio signals generated by said participants, wherein the low level electronic signal produced by each of said audio microphones is electronically amplified to produce a multiple number of corresponding first electronic signals, wherein the absolute value of each said first electronic signal is averaged over time through electronic means to produce a corresponding number of second electronic signals, wherein the magnitude of each said second electronic signal is converted to a multiple number of discrete digital electronic signals, wherein said multiple number of discrete digital electronic signals are processed by electronic computational logic, wherein said electronic computational logic computes the azimuthal position of said speaker through a pre-programmed algorithm.

2. A group video conferencing apparatus for the purpose of facilitating a group video conference involving a group of a first number of participants, said participants being azimuthally positioned about said apparatus, said apparatus comprising:

a means for the determination of the azimuthal position of said speaker from within said group of participants, wherein said determination of said azimuthal position of said speaker is realized through the electronic processing of audio signals generated by said group of participants, wherein said means for said determination of the azimuthal position of said speaker is comprised of a generally circular array of a second number of audio microphones, wherein said second number of said audio microphones is not correlated to said first number of said participants, said audio microphones being affixed to a common base element, said audio microphones being unattached from said participants, said audio microphones being located so as to capture said audio signals generated by said participants, wherein the low level electronic signal produced by each of said audio microphones is electronically amplified to produce a multiple number of corresponding first electronic signals, wherein the absolute value of each said first electronic signal is averaged over time through electronic means to produce a corresponding number of second electronic signals, wherein the magnitude of each said second electronic signal is converted to a multiple number of discrete digital electronic signals, wherein said multiple number of discrete digital electronic signals are processed by electronic computational logic, wherein said electronic computational logic computes the azimuthal position of said speaker through a pre-programmed algorithm,

a means to effect the azimuthal positioning of at least a single video camera, wherein said azimuthal positioning of said video camera is correlated to said azimuthal position of said speaker, wherein said azimuthal position of said speaker is determined by said electronic processing of said electronic signals generated by said group of participants.

3. The invention of claim 2 wherein said azimuthal positioning of said video camera is effected through electromechanical means, said electromechanical means comprising a motor means to effect said azimuthal positioning of said video camera, said electromechanical means also comprising electronic circuitry, said electronic circuitry acting to effect the actuation of said motor means.

4. The invention of claim 2 also comprising a monitoring means for the monitoring of said azimuthal positioning of said video camera, said monitoring means comprising an electrically conductive element wherein the azimuthal position of said electrically conductive element is in correlation with the azimuthal position of said video camera, said monitoring means comprising a group of electrically conductive pads wherein said electrically conductive pads are rigidly located into a generally circular arrangement, said monitoring means comprising electronic monitoring circuitry, said electrically conductive element being capable of contacting a particular said electrically conductive pad once the azimuthal position of said electrically conductive element is coincident with the azimuthal location of a particular said electrically conductive pad, said electrically conductive element being biased to a first electric potential, said electrically conductive pads being biased to a second electric potential, said electrically conductive element being capable of impressing said first electric potential onto a contacted said electrically conductive pad, said electronic monitoring circuitry being capable of sensing the electric potential of each said electrically conductive pad, said electronic monitoring circuitry ascertaining the azimuthal position of said video camera by sensing the electric potential of each said electrically conductive pad.

5. The invention of claim 2 wherein said generally circular array of said audio microphones and wherein said video camera are both affixed to a common structure for the purposes of comprising a constituent apparatus.

6. The invention of claim 2 wherein said generally circular array of said audio microphones and wherein said video camera are both affixed to a common structure for the purposes of comprising a constituent apparatus, wherein said video camera is centrally located to said generally circular array of said audio microphones.

7. The invention of claim 2 wherein said video conferencing apparatus also comprises an audio speaker means, said audio speaker means capable of converting an electronic signal into an audible audio signal, said audio signal being appropriate for the purposes of implementing a speakerphone.

8. A group video conferencing apparatus for the purpose of facilitating a group video conference involving a group of a first number of participants, said participants being azimuthally positioned about said apparatus, said apparatus comprising:

a means for the determination of the azimuthal position of said speaker from within said group of participants, wherein said determination of said azimuthal position of said speaker is realized through the electronic processing of audio signals generated by said group of participants, wherein said means for said determination of the azimuthal position of said speaker is comprised of a generally circular array of a second number of audio microphones, wherein said second number of said audio microphones is not correlated to said first number of said participants, said audio microphones being affixed to a common base element, said audio microphones being unattached from said participants, said audio microphones being located so as to capture said audio signals generated by said participants, wherein the low level electronic signal produced by each of said audio microphones is electronically amplified to produce a multiple number of corresponding first electronic signals, wherein the absolute value of each said first electronic signal is averaged over time through electronic means to produce a corresponding number of second electronic signals, wherein the magnitude of each said second electronic signal is converted to a multiple number of discrete digital electronic signals, wherein said multiple number of discrete digital electronic signals are processed by electronic computational logic, wherein said electronic computational logic computes the azimuthal position of said speaker through a pre-programmed algorithm,

a means to activate a video image captured by at least a single video camera, wherein the azimuthal field of view of the activated said video camera is correlated to said azimuthal position of said speaker, wherein said azimuthal position of said speaker is determined by said electronic processing of said audio signals generated by said group of participants.

9. The invention of claim 8 wherein said generally circular array of said audio microphones and wherein said video camera are both affixed to a common structure for the purposes of comprising a constituent apparatus.

10. The invention of claim 8 wherein said generally circular array of said audio microphones and wherein said video camera are both affixed to a common structure for the purposes of comprising a constituent apparatus, wherein said video camera is centrally located to said generally circular array of said audio microphones.

11. The invention of claim 8 wherein said video conferencing apparatus also comprises an audio speaker means, said audio speaker means capable of converting an electronic signal into an audible audio signal, said audio signal being appropriate for the purposes of implementing a speakerphone.

12. A group video conferencing apparatus for the purpose of facilitating a group video conference involving a group of a first number of participants, said participants being azimuthally positioned about said apparatus, said apparatus comprising:

a means for the determination of the azimuthal position of said speaker from within said group of participants, wherein said determination of said azimuthal position of said speaker is realized through the electronic processing of audio signals generated by said group of participants, wherein said means for said determination of the azimuthal position of said speaker is comprised of a generally circular array of a second number of audio microphones, wherein said second number of said audio microphones is not correlated to said first number of said participants, said audio microphones being affixed to a common base element, said audio microphones being unattached from said participants, said audio microphones being located so as to capture said audio signals generated by said participants, wherein the low level electronic signal produced by each of said audio microphones is processed by electronic circuitry so as to determine said azimuthal position of said speaker, said electronic circuitry effecting said determination of said azimuthal position of said speaker,

a means to effect the azimuthal positioning of at least a single video camera, wherein said azimuthal positioning of said video camera is correlated to said azimuthal position of said speaker, wherein said azimuthal position of said speaker is determined by said electronic processing of said audio signals generated by said group of participants,

a means for the monitoring of said azimuthal positioning of said video camera, said monitoring means comprising an electrically conductive element wherein the azimuthal position of said electrically conductive element is in correlation with the azimuthal positioning of said video camera, said monitoring means comprising a group of electrically conductive pads wherein said electrically conductive pads are rigidly located into a generally circular arrangement, said monitoring means comprising electronic monitoring circuitry, said electrically conductive element being capable of contacting a particular said electrically conductive pad once the azimuthal position of said electrically conductive element is coincident with the azimuthal location of a particular said electrically conductive pad, said electrically conductive element being biased to a first electric potential, said electrically conductive pads being biased to a second electric potential, said electrically conductive element being capable of impressing said first electric potential onto a contacted said electrically conductive pad, said electronic monitoring circuitry being capable of sensing the electric potential of each said electrically conductive pad, said electronic monitoring circuitry ascertaining the azimuthal position of said video camera by sensing the electric potential of each said electrically conductive pad.