Patents by Inventor Robert Addison Langridge, Jr.

Robert Addison Langridge, Jr. 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).

  • Digital diversity receiver system
    Patent number: 6088407
    Abstract: A two-way paging system includes one or more transmitters, a plurality of receivers, and at least one two-way personal paging unit or pager. The two-way pager receives pages from the transmitter, and sends response signals which are detected by the receivers. The response signals are in the form of digital packets, including forward error correction encoding and digital symbols that each consists of a predetermined number of bits. The receivers detecting the response signals decode the response packets to verify their accuracy and to identify the digital symbols. At the receivers, "accuracy indicators" can be associated with the detected symbols, providing an indication of the probability of accuracy. In one embodiment ("microdiversity receiver") two receiver components are provided at a single receiver site, with a separate antenna for each receiver component.
    Type: Grant
    Filed: September 11, 1998
    Date of Patent: July 11, 2000
    Assignee: Glenayre Electronics, Inc.
    Inventors: Barry D. Buternowsky, Edward J. Anthony, Mihaela C. Beluri, Xavier Carbo Figueras, Robert Addison Langridge, Jr., Robert Richard Leyendecker, Glaudio Gustavo Rey, Desmond Wai Ming Yan
  • Digital diversity receiver system
    Patent number: 5809090
    Abstract: A two-way paging system includes one or more transmitters, a plurality of receivers, and at least one two-way personal paging unit or pager. The two-way pager receives pages from the transmitter, and sends response signals which are detected by the receivers. The response signals are in the form of digital packets, including forward error correction encoding and digital symbols that each consists of a predetermined number of bits. The receivers detecting the response signals decode the response packets to verify their accuracy and to identify the digital symbols. At the receivers, "accuracy indicators" can be associated with the detected symbols, providing an indication of the probability of accuracy. In one embodiment ("microdiversity receiver") two receiver components are provided at a single receiver site, with a separate antenna for each receiver component.
    Type: Grant
    Filed: March 4, 1996
    Date of Patent: September 15, 1998
    Assignee: Glenayre Electronics, Inc.
    Inventors: Barry D. Buternowsky, Edward J. Anthony, Mihaela C. Beluri, Xavier Carbo Figueras, Robert Addison Langridge, Jr., Robert Richard Leyendecker, Glaudio Gustavo Rey, Desmond Wai Ming Yan