Patents by Inventor Keith A. Lantz

Keith A. Lantz has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 8659636
    Abstract: A method for executing a video conference is provided that includes receiving one or more audio streams associated with a video conference from one or more end points and determining an active speaker associated with one of the end points. Audio information associated with the active speaker may be received at one or more media switches. One or more video streams may be suppressed except for a selected video stream associated with the active speaker, the selected video stream propagating to one or more of the media switches during the video conference. The selected video stream may be replicated such that it may be communicated to one or more of the end points associated with a selected one of the media switches.
    Type: Grant
    Filed: October 8, 2003
    Date of Patent: February 25, 2014
    Assignee: Cisco Technology, Inc.
    Inventors: Scott S. Firestone, Walter R. Friedrich, Nermin M. Ismail, Keith A. Lantz, Shantanu Sarkar, Luke K. Surazski, Duanpei Wu
  • Patent number: 7908320
    Abstract: A multimedia collaboration system that integrates separate real-time and asynchronous networks—the former for real-time audio and video, and the latter for control signals and textual, graphical and other data—in a manner that is interoperable across different computer and network operating system platforms and which closely approximates the experience of face-to-face collaboration, while liberating the participants from the limitations of time and distance. These capabilities are achieved by exploiting a variety of hardware, software and networking technologies in a manner that preserves the quality and integrity of audio/video/data and other multimedia information, even after wide area transmission, and at a significantly reduced networking cost as compared to what would be required by presently known approaches. The system architecture is readily scalable to the largest enterprise network environments.
    Type: Grant
    Filed: November 1, 2005
    Date of Patent: March 15, 2011
    Assignee: Pragmatus AV LLC
    Inventors: Lester F. Ludwig, J. Chris Lauwers, Keith A. Lantz, Gerald J. Burnett, Emmett R. Burns
  • Patent number: 7889636
    Abstract: A communication system includes a call agent that coordinates and supervises communications between endpoints. The call agent allocates a QoS agent for each endpoint involved in a call. The QoS agents generate reservations for the call in order to provide the call with a guaranteed amount of bandwidth and an established QoS. Each endpoint or location associated with an endpoint has a reservation policy that determines how calls are to be handled when a reservation is or is not obtained and when a reservation is lost or obtained during a call. The communication system is able to handle reservations, or the lack thereof, during various situations like on hold, call transfer, call forwarding, conference call, and shared line services.
    Type: Grant
    Filed: May 24, 2005
    Date of Patent: February 15, 2011
    Assignee: Cisco Technology, Inc.
    Inventors: Subhasri Dhesikan, Denise G. Caballero-McCann, Kevin E. Miller, Rongxuan V. Chen, John K. Restrick, Jr., Scott A. Henning, Martin W. Wu, Keith A. Lantz, David Sauerhaft
  • Patent number: 7831663
    Abstract: A client device is in communication with a first storage device over a wide area network. The first storage device is of multiple storage devices in a networking system and stores media files. The client device can access a media file at the first storage device and the media file includes at least a reference to a video portion and at least a hyperlink that references a second media file.
    Type: Grant
    Filed: January 30, 2007
    Date of Patent: November 9, 2010
    Assignee: Pragmatus AV LLC
    Inventors: Lester F. Ludwig, J. Chris Lauwers, Keith A. Lantz, Gerald J. Burnett, Emmett R. Burns
  • Patent number: 7822813
    Abstract: A content storage and distribution networked system is described. The system includes at least one local network at a first physical premises, at least one audio-video storage device in communication with the local network, and at least two client devices in communication with the local network. The audio-video storage device is configured to store at least one media file, which includes at least video. The first client device is configured to enable the two client device to simultaneously access the at least one media file stored on the audio-video storage device. The system is configured to cause playback of media that is associated with the retrieved media file, and to enable the user of the first client device to operate on the playback of the media associated with the retrieved media file, using at least the operations of start, stop, pause, fast forward, and reverse.
    Type: Grant
    Filed: January 30, 2007
    Date of Patent: October 26, 2010
    Inventors: Lester F. Ludwig, J. Chris Lauwers, Keith A. Lantz, Gerald J. Burnett, Emmett R. Burns
  • Patent number: 7756138
    Abstract: A communication system includes a call agent that coordinates and supervises communications between endpoints. The call agent allocates a QoS agent for each endpoint involved in a call. The QoS agents generate reservations for the call in order to provide the call with a guaranteed amount of bandwidth and an established QoS. Each endpoint or location associated with an endpoint has a reservation policy that determines how calls are to be handled when a reservation is or is not obtained and when a reservation is lost or obtained during a call. The communication system is able to handle reservations, or the lack thereof, during various situations like on hold, call transfer, call forwarding, conference call, and shared line services.
    Type: Grant
    Filed: August 31, 2005
    Date of Patent: July 13, 2010
    Assignee: Cisco Technology, Inc.
    Inventors: Subhasri Dhesikan, Rongxuan V. Chen, John K. Restrick, Jr., Scott A. Henning, Martin W. Wu, Keith A. Lantz, Michael G. Harttree
  • Patent number: 7730132
    Abstract: An audio-video storage device includes a storage interface to interface with a storage medium that store a media file including video. The storage device includes a network interface to interface with a local network. The storage device performs replication of the stored media file. The storage device provides access to the media file to a first client device and a second client device over the local network and the wide area network respectively.
    Type: Grant
    Filed: April 19, 2007
    Date of Patent: June 1, 2010
    Inventors: Lester F. Ludwig, J. Chris Lauwers, Keith A. Lantz, Gerald J. Burnett, Emmett R. Burns
  • Patent number: 7499415
    Abstract: A communication system includes a call agent that coordinates and supervises communications between endpoints. The call agent allocates a QoS agent for each endpoint involved in a call. The QoS agents generate reservations for the call in order to provide the call with a guaranteed amount of bandwidth and an established QoS. Each endpoint or location associated with an endpoint has a reservation policy that determines how calls are to be handled when a reservation is or is not obtained and when a reservation is lost or obtained during a call. The communication system is able to handle reservations, or the lack thereof, during various situations like on hold, call transfer, call forwarding, conference call, and shared line services.
    Type: Grant
    Filed: August 31, 2005
    Date of Patent: March 3, 2009
    Assignee: Cisco Technology, Inc.
    Inventors: Subhasri Dhesikan, Keith A. Lantz, Kevin E. Miller, Rongxuan V. Chen, John K. Restrick, Jr., Scott A. Henning, Martin W. Wu
  • Patent number: 7487210
    Abstract: A method of communication that includes causing user identifiers to be displayed in a group or panel that has been previously created by the first user by selecting user identifiers of potential callees from a list, and further including user identifier information for the second user retrieved over at least one network is disclosed.
    Type: Grant
    Filed: January 12, 2007
    Date of Patent: February 3, 2009
    Assignee: Avistar Communications Corporation
    Inventors: Lester F. Ludwig, J. Chris Lauwers, Keith A. Lantz, Gerald J. Burnett, Emmett R. Burns
  • Patent number: 7477282
    Abstract: A method for executing a video conference is provided that includes receiving one or more audio streams associated with a video conference from one or more end points and determining an active speaker associated with one of the end points. Audio information associated with the active speaker may be received at one or more media switches. One or more video streams may be suppressed except for a selected video stream associated with the active speaker, the selected video stream propagating to one or more of the media switches during the video conference. The selected video stream may be replicated such that it may be communicated to one or more of the end points associated with a selected one of the media switches.
    Type: Grant
    Filed: July 12, 2005
    Date of Patent: January 13, 2009
    Assignee: Cisco Technology, Inc.
    Inventors: Scott S. Firestone, Walter R. Friedrich, Nermin M. Ismail, Keith A. Lantz, Shantanu Sarkar, Luke K. Surazski, Duanpei Wu
  • Patent number: 7444373
    Abstract: A user logs in, at a first address, using a first communication device and establishes communication with an associated server using a wireless communication link. The user enables the first user to log in, at a second address, using the first communication device and establish communication with an associated server. Another user can log in using one or more communication devices. User identifiers for a second user are displayed in a quick dial list for a first user. When the first user selects the second user's identifier, the second user's address information is obtained and used to establish communication between these users.
    Type: Grant
    Filed: January 16, 2007
    Date of Patent: October 28, 2008
    Assignee: Avistar Communications Corporation
    Inventors: Lester F. Ludwig, J. Chris Lauwers, Keith A. Lantz, Gerald J. Burnett, Emmett R. Burns
  • Patent number: 7441001
    Abstract: First and second users log in using at least one of a plurality of respective communication devices using corresponding collaboration initiation software. Address information of the communication devices used by the first and second users to log in are sent to respective first and second servers connected to respective first and second communication networks. In response to a request from the first user for communication with the second user, address information of the second communication device is retrieved from at least one of the first and second servers, which set up real-time wide area communication between ports.
    Type: Grant
    Filed: January 18, 2007
    Date of Patent: October 21, 2008
    Assignee: Avistar Communications Corporation
    Inventors: Lester F. Ludwig, J. Chris Lauwers, Keith A. Lantz, Gerald J. Burnett, Emmett R. Burns
  • Patent number: 7437411
    Abstract: First and second users log in using at least one of a plurality of respective communication devices. Address information of the communication devices used by the first and second users to log in are sent to respective first and second servers, separated from each other by at least one wide area network. A user identifier for the second user is displayed in a quick dial list of user identifiers selected by the first user. The first user selects the displayed second user's identifier to request communication with the second user. The first user also selects a communication type. In response, the first server is queried to obtain the current address information for the selected second user. The received address information is used to establish the selected communication type, over the wide area network, between the first and second users.
    Type: Grant
    Filed: January 15, 2007
    Date of Patent: October 14, 2008
    Assignee: Avistar Communications Corporation
    Inventors: Lester F. Ludwig, J. Chris Lauwers, Keith A. Lantz, Gerald J. Burnett, Emmett R. Burns
  • Patent number: 7437412
    Abstract: First and second users log in using respective communication devices. Address information of the communication devices are sent to respective first and second servers. At the communication device used by the first user, a graphical icon representing the second user is retrieved from the first server, and is displayed in a quick dial list of first-user-selected user identifiers on the display. The first user selects the icon to request communication with the second user. Real-time communication types are displayed on a display associated with the communication device used by the first user. In response, the first server is queried to obtain the current address information for the selected second user. The received address information is used to establish a communication type. If a communication type is selected by the first user, the real-time communication is of the selected type. Otherwise, the real-time communication is of a default communication type.
    Type: Grant
    Filed: January 19, 2007
    Date of Patent: October 14, 2008
    Assignee: Avistar Communications Corporation
    Inventors: Lester F. Ludwig, J. Chris Lauwers, Keith A. Lantz, Gerald J. Burnett, Emmett R. Burns
  • Patent number: 7433921
    Abstract: A system for real-time communication between a plurality of separated users, comprising at least one communication device for use by each of the plurality of users and having an associated display and at least one communication network to which at least first and second users can connect by logging in at their respective communication devices. Further included are at least one service record for the first and second logged in users, the at least one service record including user identification information and an associated location where each user is logged in no matter where they are located.
    Type: Grant
    Filed: November 26, 2003
    Date of Patent: October 7, 2008
    Assignee: Avistar Communications Corporation
    Inventors: Lester F. Ludwig, J. Chris Lauwers, Keith A. Lantz, Gerald J. Burnett, Emmett R. Burns
  • Patent number: 7421470
    Abstract: A method of real-time communication between a plurality of users each with respective communication devices having associated displays, the method comprising the steps of providing each of the plurality of users with collaboration initiation software at their communication devices and allowing at least first and second users to connect to at least one communication network by logging in at their respective communication devices. Further, the method comprises maintaining service records for at least the first and second logged in users, the service records including user identification information and an associated location where each user is logged in.
    Type: Grant
    Filed: November 26, 2003
    Date of Patent: September 2, 2008
    Assignee: Avistar Communications Corporation
    Inventors: Lester F. Ludwig, J. Chris Lauwers, Keith A. Lantz, Gerald J. Burnett, Emmett R. Burns
  • Patent number: 7412482
    Abstract: A system of communication that includes causing user identifiers to be displayed in a group or panel that has been previously created by the first user by selecting user identifiers of potential callees from a list, and further including user identifier information for the second user retrieved over at least one network is disclosed.
    Type: Grant
    Filed: January 12, 2007
    Date of Patent: August 12, 2008
    Assignee: Avistar Communications Corporation
    Inventors: Lester F. Ludwig, J. Chris Lauwers, Keith A. Lantz, Gerald J. Burnett, Emmett R. Burns
  • Patent number: 7398296
    Abstract: Two or more users can log in using at least one device each. Addresses for the users are sent to servers associated with the users, these servers being separated by a wide area network. From a quick dial list of user identifiers, a user selects an identifier for another user to make a request for communication with the second user. At least one port associated with a collaboration service is specified.
    Type: Grant
    Filed: January 16, 2007
    Date of Patent: July 8, 2008
    Assignee: Avistar Communications Corporation
    Inventors: Lester F. Ludwig, J. Chris Lauwers, Keith A. Lantz, Gerald J. Burnett, Emmett R. Burns
  • Publication number: 20070168426
    Abstract: A content storage and communication system is claimed. The system includes at least one local network at first physical premises. The system includes at least one audio-video storage device in communication with the local network. The audio-video storage device is configured for storing at least one media file, which includes at least video. The system includes at least a first client device in communication with the local network. The system is configured to enable a user of the first client device to communicate with a wide area network. The system is configured to enable simultaneous multiple retrieval of the at least one media file stored on the audio-video storage device. The system is configured to enable multiple playbacks of media associated with the accessed media file.
    Type: Application
    Filed: April 19, 2007
    Publication date: July 19, 2007
    Applicant: COLLABORATION PROPERTIES, INC.
    Inventors: Lester Ludwig, J. Lauwers, Keith Lantz, Gerald Burnett, Emmett Burns
  • Publication number: 20070088781
    Abstract: A content storage and distribution networked system is described. The system includes at least one local network at a first physical premises, at least one audio-video storage device in communication with the local network, and at least two client devices in communication with the local network. The audio-video storage device is configured to store at least one media file, which includes at least video. The first client device is configured to enable the two client device to simultaneously access the at least one media file stored on the audio-video storage device. The system is configured to cause playback of media that is associated with the retrieved media file, and to enable the user of the first client device to operate on the playback of the media associated with the retrieved media file, using at least the operations of start, stop, pause, fast forward, and reverse.
    Type: Application
    Filed: January 30, 2007
    Publication date: April 19, 2007
    Applicant: Collaboration Properties, Inc.
    Inventors: Lester Ludwig, J. Lauwers, Keith Lantz, Gerald Burnett, Emmett Burns