Patents by Inventor David A. Tawfik

David A. Tawfik 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 flight guidance system
    Patent number: 4217486
    Abstract: A digital flight guidance system includes a pair of processors, each with its own memory means and arranged with common input and output means for providing monitored guidance of an aircraft when the craft is in cruise modes or when the craft is performing a critical maneuver such as landing, terrain following, or the like.
    Type: Grant
    Filed: January 31, 1979
    Date of Patent: August 12, 1980
    Assignee: The Bendix Corporation
    Inventors: David A. Tawfik, Jerry Doniger, Donald J. Porawski
  • Power strobed digital computer system
    Patent number: 4171539
    Abstract: For use with a digital computer system utilizing a processing unit having a higher computational capability than required, means for removing power from system components not required to remember computational variables when the processing unit has completed its prescribed tasks.
    Type: Grant
    Filed: December 19, 1977
    Date of Patent: October 16, 1979
    Assignee: The Bendix Corporation
    Inventors: David A. Tawfik, Martin W. Feintuch
  • Digital control system including built in test equipment
    Patent number: 4155116
    Abstract: A digital control system features built in test equipment including analog input signal and discrete input signal wrap around implementations for testing the system to achieve maintainability goals without significantly adding to system configuration requirements.
    Type: Grant
    Filed: January 4, 1978
    Date of Patent: May 15, 1979
    Assignee: The Bendix Corporation
    Inventors: David A. Tawfik, Robert Bollard, Donald J. Porawski
  • Monitoring apparatus for redundant control systems
    Patent number: 4096989
    Abstract: Monitoring apparatus for redundant control systems includes means for preventing the monitoring apparatus from failing to a "good" state. Each of the channels in the redundant system generates a command signal which is compared to a signal provided by adding the command signal generated by another of the channels to a tracer signal. The amplitude of the addition signal is such so that the comparator toggles between its "good" and "fail" states to obviate failure of the monitoring apparatus to its "good" state.
    Type: Grant
    Filed: June 20, 1977
    Date of Patent: June 27, 1978
    Assignee: The Bendix Corporation
    Inventor: David A. Tawfik