Patents by Inventor Debasish Nag

Debasish Nag 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: 10571571
    Abstract: A method and apparatus for fixing a depth map wrap-around error and a depth map coverage by a confidence map. The method includes dynamically determining a threshold for the confidence map threshold based on an ambient light environment, wherein the threshold is reconfigurable depending on LED light strength distribution in TOF sensor, extracting, via the digital processor, four phases of Time Of Flight raw data from the Time Of Flight sensor data, computing a phase differential signal array for fixed point utilizing the four phases of the Time Of Flight raw data, computing the depth map, confidence map and the average light signal strength utilizing the phase differential signal array, obtaining the dynamic confidence map threshold for wrap around error correction utilizing the average light signal strength, and correcting the depth map wrap-around error utilizing the depth map, the confidence map and the dynamic confidence map threshold.
    Type: Grant
    Filed: November 14, 2011
    Date of Patent: February 25, 2020
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Dong-Ik Ko, Nara Won, Debasish Nag
  • Patent number: 9151842
    Abstract: A method and apparatus for Time Of Flight sensor 2-dimensional and 3-dimensional map generation. The method includes retrieving Time Of Flight sensor fixed point data to obtain four phases of Time Of Flight fixed point raw data, computing Gray scale image array and phase differential signal arrays utilizing four phases of TOF fixed point raw data, computing Gray image array and Amplitude image array for fixed point, converting the phase differential signal array from fixed point to floating point, performing the floating point division for computing Arctan, TOF depthmap, and 3-dimensional point cloud map for Q format fixed point, and generating depthmap, 3-dimensional cloud coefficients and 3-dimensional point cloud for Q format fixed point.
    Type: Grant
    Filed: November 11, 2011
    Date of Patent: October 6, 2015
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Dong-Ik Ko, Nara Won, Debasish Nag
  • Publication number: 20140302740
    Abstract: A toy building block of a type which may be interconnected with similarly configured blocks has a hollow box-shaped structure having a top with cylindrical stud coupling members, and sides which together with the top define a downwardly opening cavity into which the cylindrical studs of a like configured block may be inserted for frictional interconnection. One or more integrated circuit chips are embedded within the molding material of the block, and leads incorporated within the block studs and sides provide electrical interconnection between blocks when like configured blocks are brought into frictional interengagement. In a described embodiment, components of a digital video recording system are apportioned to different blocks which when interconnected provide the complete system functionality.
    Type: Application
    Filed: April 8, 2014
    Publication date: October 9, 2014
    Applicant: Texas Instruments Incorporated
    Inventor: Debasish Nag
  • Patent number: 8690631
    Abstract: A toy building block of a type which may be interconnected with similarly configured blocks has a hollow box-shaped structure having a top with cylindrical stud coupling members, and sides which together with the top define a downwardly opening cavity into which the cylindrical studs of a like configured block may be inserted for frictional interconnection. One or more integrated circuit chips are embedded within the molding material of the block, and leads incorporated within the block studs and sides provide electrical interconnection between blocks when like configured blocks are brought into frictional interengagement. In a described embodiment, components of a digital video recording system are apportioned to different blocks which when interconnected provide the complete system functionality.
    Type: Grant
    Filed: March 29, 2010
    Date of Patent: April 8, 2014
    Assignee: Texas Instruments Incorporated
    Inventor: Debasish Nag
  • Publication number: 20120123718
    Abstract: A method and apparatus for fixing a depth map wrap-around error and a depth map coverage by a confidence map. The method includes dynamically determining a threshold for the confidence map threshold based on an ambient light environment, wherein the threshold is reconfigurable depending on LED light strength distribution in TOF sensor, extracting, via the digital processor, four phases of Time Of Flight raw data from the Time Of Flight sensor data, computing a phase differential signal array for fixed point utilizing the four phases of the Time Of Flight raw data, computing the depth map, confidence map and the average light signal strength utilizing the phase differential signal array, obtaining the dynamic confidence map threshold for wrap around error correction utilizing the average light signal strength, and correcting the depth map wrap-around error utilizing the depth map, the confidence map and the dynamic confidence map threshold.
    Type: Application
    Filed: November 14, 2011
    Publication date: May 17, 2012
    Applicant: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Dong-Ik Ko, Nara Won, Debasish Nag
  • Publication number: 20120121165
    Abstract: A method and apparatus for Time Of Flight sensor 2-dimensional and 3-dimensional map generation. The method includes retrieving Time Of Flight sensor fixed point data to obtain four phases of Time Of Flight fixed point raw data, computing Gray scale image array and phase differential signal arrays utilizing four phases of TOF fixed point raw data, computing Gray image array and Amplitude image array for fixed point, converting the phase differential signal array from fixed point to floating point, performing the floating point division for computing Arctan, TOF depthmap, and 3-dimensional point cloud map for Q format fixed point, and generating depthmap, 3-dimensional cloud coefficients and 3-dimensional point cloud for Q format fixed point.
    Type: Application
    Filed: November 11, 2011
    Publication date: May 17, 2012
    Applicant: Texas Instruments Incorporated
    Inventors: Dong-Ik Ko, Nara Won, Debasish Nag
  • Publication number: 20110021107
    Abstract: A toy building block of a type which may be interconnected with similarly configured blocks has a hollow box-shaped structure having a top with cylindrical stud coupling members, and sides which together with the top define a downwardly opening cavity into which the cylindrical studs of a like configured block may be inserted for frictional interconnection. One or more integrated circuit chips are embedded within the molding material of the block, and leads incorporated within the block studs and sides provide electrical interconnection between blocks when like configured blocks are brought into frictional interengagement. In a described embodiment, components of a digital video recording system are apportioned to different blocks which when interconnected provide the complete system functionality.
    Type: Application
    Filed: March 29, 2010
    Publication date: January 27, 2011
    Applicant: TEXAS INSTRUMENTS INCORPORATED
    Inventor: Debasish Nag
  • Patent number: 7633971
    Abstract: A transport unit is disclosed. On a transmit side, the transport unit includes a payload data unit (PDU) formation unit, a frame formation unit and a scheduler. An input of the scheduler is coupled to the PDU formation unit, and an output of the scheduler is coupled to the frame formation unit. On a receive side, the transport unit includes a distribution unit (which includes a group synchronization unit), a channel resequencing unit (coupled to the group synchronization unit), and a scheduler (coupled to the channel resequencing unit).
    Type: Grant
    Filed: March 31, 2003
    Date of Patent: December 15, 2009
    Assignee: Ceterus Networks, Inc.
    Inventors: Robert K. Butler, William C. Szeto, Robert W. Cantwell, Rajendra R. Damle, Debasish Nag