Patents by Inventor David Arthur Berkley

David Arthur Berkley 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: 8130751
    Abstract: An Active User Registry system includes a database which is integrated with the POTS network and a packet network to exploit the outstanding strengths of both of its constituents. The Active User Registry database is a dynamic data structure of all the ways in which one or more users can be reached via some type of communication network. A key feature of the Active User Registry is the ability to broker between a subscriber's request for communications contact information corresponding to a user and the user's preferences of being reached by various communications alternatives.
    Type: Grant
    Filed: March 21, 2008
    Date of Patent: March 6, 2012
    Assignee: AT&T Intellectual Property II, L.P.
    Inventors: David Arthur Berkley, Lawrence Richard Rabiner, Eric E. Sumner, Jr.
  • Patent number: 7408920
    Abstract: An Active User Registry system includes a database which is integrated with the POTS network and a packet network to exploit the outstanding strengths of both of its constituents. The Active User Registry database is a dynamic data structure of all the ways in which one or more users can be reached via some type of communication network. A key feature of the Active User Registry is the ability to broker between a subscriber's request for communications contact information corresponding to a user and the user's preferences of being reached by various communications alternatives.
    Type: Grant
    Filed: March 5, 2002
    Date of Patent: August 5, 2008
    Assignee: AT&T Corp.
    Inventors: David Arthur Berkley, Lawrence Richard Rabiner, Eric E. Sumner, Jr.
  • Patent number: 6546009
    Abstract: A method of reducing transmission delays in a packet-switched telephone system. Each of the data packets carrying telephone voice data is under-filled when necessary in order to avoid undue delays in sending the packets to their designation. Under-filling of the packets allows a routine telephone conversation to take place with out being adversely affected by network delays or delays normally attributed to the time needed to accumulate sufficient data to fill a packet to its normal size. Packets may also be filled to their normal size by combining data from more than one telephone call if the data from the other calls is immediately available. Filling an otherwise under-filled packet with data from multiple telephone calls avoids the inefficiencies which would otherwise be present with under-filled packets for a single call.
    Type: Grant
    Filed: August 11, 1998
    Date of Patent: April 8, 2003
    Assignee: AT&T Corp.
    Inventors: Lee Begeja, Andrew J. Berkley, David Arthur Berkley
  • Patent number: 6546005
    Abstract: An Active User Registry system includes a database which is integrated with the POTS network and a packet network (such as the Internet, or a corporate intranet). Integrating AUR with the POTS network and a packet network exploits the outstanding strengths of both of its constituents, such as the low-latency, high reliability, moderate fidelity real-time voice telephony provided by the POTS network, and the point-and-click access to distributed databases with excellent search capabilities provided by a packet network, such as the Internet (including those made available using browser technology in conjunction with the World Wide Web). The AUR database contains a dynamic data structure (such as a linked list or a hashed table) of all the ways in which one or more users can be reached via some type of communication network (e.g., through the POTS network or a packet network, or both).
    Type: Grant
    Filed: March 25, 1997
    Date of Patent: April 8, 2003
    Assignee: AT&T Corp.
    Inventors: David Arthur Berkley, Lawrence Richard Rabiner, Eric E. Sumner, Jr.
  • Publication number: 20020131573
    Abstract: An Active User Registry system comprises a database which is integrated with the POTS network and a packet network (such as the Internet, or a corporate intranet). Integrating AUR with the POTS network and a packet network exploits the outstanding strengths of both of its constituents, such as the low-latency, high reliability, moderate fidelity real-time voice telephony provided by the POTS network, and the point-and-click access to distributed databases with excellent search capabilities provided by a packet network, such as the Internet (including those made available using browser technology in conjunction with the World Wide Web). The AUR database contains a dynamic data structure (such as a linked list or a hashed table) of all the ways in which one or more users can be reached via some type of communication network (e.g., through the POTS network or a packet network, or both).
    Type: Application
    Filed: March 5, 2002
    Publication date: September 19, 2002
    Inventors: David Arthur Berkley, Lawrence Richard Rabiner, Eric E. Sumner
  • Patent number: 5956668
    Abstract: A method for the treatment of unrecognized words and phrases in spoken language translation systems is applicable to open-ended word or phrase categories, such as proper names, and involves the demarcation of one or more unrecognized segments from the input speech signal and splicing these segments into the appropriate position of the synthesized speech signal for the translation.
    Type: Grant
    Filed: July 18, 1997
    Date of Patent: September 21, 1999
    Assignee: AT&T Corp.
    Inventors: Hiyan Alshawi, David Arthur Berkley
  • Patent number: RE28919
    Abstract: An echo suppressor for full duplex telephone circuits consists of a filter bank of contiguous band filters in the transmission path, with each filter output feeding a separate center clipper. Each clipping level is controlled by echo signal amplitude as attenuated by the trans-hybrid loss that occurs in the corresponding subband. The scheme permits "double-talking" while suppressing the echo component.
    Type: Grant
    Filed: October 11, 1974
    Date of Patent: July 27, 1976
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventors: David Arthur Berkley, Olga Mary Mracek Mitchell, John Robinson Pierce