Patents by Inventor William M. Bowles

William M. Bowles 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).

  • Pseudo-random-number code detection and tracking system
    Patent number: 4203070
    Abstract: A pseudo-random-number code detection and tracking system using a closed loop system wherein a detector having a non-linear response characteristic is responsive to a coded received signal and to a locally generated coded signal to produce an error signal. The error is used to control the characteristics of the local signal so as to cause the signals to become aligned. Means are further provided to dynamically control the non-linear response characteristics of the detector so that the coded received signal and coded local signal remain aligned over a controllable range of error signal levels. Thus, a relatively large range can be used during an acquisition operation and a relatively narrower range during the tracking operation.
    Type: Grant
    Filed: August 8, 1978
    Date of Patent: May 13, 1980
    Assignee: The Charles Stark Draper Laboratory, Inc.
    Inventors: William M. Bowles, Duncan B. Cox, Jr.
  • Pseudo-random-number-code-detection and tracking system
    Patent number: 4203071
    Abstract: A pseudo-random-number code detection and tracking system using a closed loop system wherein a detector having a non-linear response characteristic is responsive to a coded received signal and to a locally generated coded signal to produce an error signal. The error is used to control the characteristics of the local signal so as to cause the signals to become aligned. Means are further provided to dynamically control the non-linear response characteristics of the detector so that the coded received signal and coded local signal remain aligned over a controllable range of error signal levels. Thus, a relatively large range can be used during an acquisition operation and a relatively narrower range during the tracking operation.
    Type: Grant
    Filed: August 8, 1978
    Date of Patent: May 13, 1980
    Assignee: The Charles Stark Draper Laboratory, Inc.
    Inventors: William M. Bowles, Duncan B. Cox, Jr., Walter J. Guinon