Patents by Inventor Showkat Osman

Showkat Osman 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 DPSK demodulation method and system
    Patent number: 7792209
    Abstract: An aircraft transponder comprises an antenna for receiving an RF signal a downconverter coupled to the antenna for downconverting the RF signal to an IF signal, an analog-to-digital converter coupled to the downconverter to digitize the IF signal to produce a digital signal, and; a processor unit coupled to the analog-to-digital converter. The processor unit is configured to: (1) generate a delayed digital signal; (2) multiply a delayed digital signal by the digital signal to produce a multiplied output; and (3) filter the multiplied output to produce a filtered output having a positive or negative sign. The transponder further includes a sign converter operable to output a one or zero based on the sign of the filtered output to recover the data component.
    Type: Grant
    Filed: October 6, 2005
    Date of Patent: September 7, 2010
    Assignee: Honeywell International Inc.
    Inventors: Delbert E. Brandley, Showkat Osman
  • Integrated distance measuring equipment and transponder system and method
    Patent number: 7525474
    Abstract: A combined transponder and DME system for use in an aircraft. An L Band transmitter is shared between transponder and DME.
    Type: Grant
    Filed: March 30, 2007
    Date of Patent: April 28, 2009
    Assignee: Honeywell International Inc.
    Inventors: John B. Carocari, Showkat Osman
  • INTEGRATED DISTANCE MEASURING EQUIPMENT AND TRANSPONDER SYSTEM AND METHOD
    Publication number: 20080238759
    Abstract: A combined transponder and DME system for use in an aircraft. An L Band transmitter is shared between transponder and DME.
    Type: Application
    Filed: March 30, 2007
    Publication date: October 2, 2008
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: John B. Carocari, Showkat Osman
  • Method and system for real time pulse processing in ATCRBS/Mode-S transponders
    Patent number: 7352318
    Abstract: An apparatus for processing pulses in ATCRBS/Mode S interrogations includes an antenna for receiving a radio frequency interrogation signal. The radio frequency interrogation signal is downconverted by a downconverter to an intermediate frequency signal. The intermediate frequency signal is converted to a digitized interrogation signal by an analog-to-digital converter. A processing unit, coupled to the analog-to-digital converter, detects a pulse peak in the digitized interrogation signal using a moving threshold to locate the peak pulse between a first fixed threshold and a second fixed threshold.
    Type: Grant
    Filed: October 31, 2005
    Date of Patent: April 1, 2008
    Assignee: Honeywell International Inc.
    Inventors: Showkat Osman, Delbert E. Brandley
  • METHOD AND SYSTEM FOR REAL TIME PULSE PROCESSING IN ATCRBS/MODE-S TRANSPONDERS
    Publication number: 20080030393
    Abstract: An apparatus for processing pulses in ATCRBS/Mode S interrogations includes an antenna for receiving a radio frequency interrogation signal. The radio frequency interrogation signal is downconverted by a downconverter to an intermediate frequency signal. The intermediate frequency signal is converted to a digitized interrogation signal by an analog-to-digital converter. A processing unit, coupled to the analog-to-digital converter, detects a pulse peak in the digitized interrogation signal using a moving threshold to locate the peak pulse between a first fixed threshold and a second fixed threshold.
    Type: Application
    Filed: October 31, 2005
    Publication date: February 7, 2008
    Inventors: Showkat Osman, Delbert E. Brandley
  • Digital DPSK demodulation method and system
    Publication number: 20070080849
    Abstract: An aircraft transponder comprises an antenna for receiving an RF signal a downconverter coupled to the antenna for downconverting the RF signal to an IF signal, an analog-to-digital converter coupled to the downconverter to digitize the IF signal to produce a digital signal, and; a processor unit coupled to the analog-to-digital converter. The processor unit is configured to: (1) generate a delayed digital signal; (2) multiply a delayed digital signal by the digital signal to produce a multiplied output; and (3) filter the multiplied output to produce a filtered output having a positive or negative sign. The transponder further includes a sign converter operable to output a one or zero band on the sign of the filtered output to recover the data component.
    Type: Application
    Filed: October 6, 2005
    Publication date: April 12, 2007
    Inventors: Delbert Brandley, Showkat Osman