Patents by Inventor Felix C. Fernandes

Felix C. Fernandes 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: 7995143
    Abstract: The present invention provides a method and apparatus for synchronizing wireless video data. The method involves first synchronizing the pixel clock of a video output device with the pixel clock of a video input device. This is accomplished by latching video counters in the input and output devices (creating a transmit and receive timestamp) for each wireless video data packet and adjusting the pixel clock frequency of the output device according to differences between these timestamps. Once the pixel clocks are synchronized, video frames from the video output device are synchronized with video frames from video input device such that only a fraction of a video frame is buffered at any time. The video frames are synchronized by offsetting the data stream from the video input device N lines ahead of the data stream from the video output device, wherein N is less than the total number of lines in a single video frame.
    Type: Grant
    Filed: February 10, 2006
    Date of Patent: August 9, 2011
    Assignee: QUALCOMM Incorporated
    Inventors: Gregory L. Christison, Fred S. Stivers, Felix C. Fernandes
  • Patent number: 7852941
    Abstract: Transcoding as from MPEG-2 SDTV to MPEG-4 CIF reuses motion vectors and downsamples in the frequency (DCT) domain with differing treatments of frame-DCT and field-DCT blocks, and alternatively uses de-interlacing IDCT with respect to the row dimension plus deferred column downsampling for reference frame blocks.
    Type: Grant
    Filed: July 2, 2008
    Date of Patent: December 14, 2010
    Assignee: Texas Instruments Incorporated
    Inventor: Felix C. Fernandes
  • Publication number: 20080298463
    Abstract: A system, method and computer-readable medium for reducing the required throughput in an ultra-wideband system is provided. A temporal sub-sampling routine limits the number of frames, or portions thereof, to be transmitted to a sink over an RF link. The temporal sub-sampling routine may have a fixed, or static, sub-sampling rate that specifies the rate at which frames are discarded. In accordance with another embodiment, an automatic temporal sub-sampling mechanism is provided. Additionally, a tile copying mechanism may be implemented for reducing the throughput of the RF link. A WDV subsystem may include an interface to an external frame buffer that facilitates the temporal sub-sampling and tile copy routines disclosed herein.
    Type: Application
    Filed: May 31, 2007
    Publication date: December 4, 2008
    Applicant: WIQUEST COMMUNICATIONS, INC.
    Inventors: Fred S. Stivers, Felix C. Fernandes, Sidney B. Schrum, JR., Matthew B. Shoemake
  • Publication number: 20080267294
    Abstract: Transcoding as from MPEG-2 SDTV to MPEG-4 CIF reuses motion vectors and downsamples in the frequency (DCT) domain with differing treatments of frame-DCT and field-DCT blocks, and alternatively uses de-interlacing IDCT with respect to the row dimension plus deferred column downsampling for reference frame blocks.
    Type: Application
    Filed: July 2, 2008
    Publication date: October 30, 2008
    Applicant: Texas Instruments Incorporated
    Inventor: Felix C. Fernandes
  • Patent number: 7412003
    Abstract: Transcoding as from MPEG-2 SDTV to MPEG-4 CIF reuses motion vectors and downsamples in the frequency (DCT) domain with differing treatments of frame-DCT and field-DCT blocks, and alternatively uses de-interlacing IDCT with respect to the row dimension plus deferred column downsampling for reference frame blocks.
    Type: Grant
    Filed: September 17, 2003
    Date of Patent: August 12, 2008
    Assignee: Texas Instruments Incorporated
    Inventor: Felix C. Fernandes
  • Publication number: 20080137737
    Abstract: A method for line-based video rate control is provided. The line based video rate control method includes system feedback to change system operating parameters, including on a packet-by-packet basis and also on a line-by-line basis. Also provided is a method for line-based compression. The method includes basic elements of an arithmetic coder to improve Golomb coding performance. By inverting operations in the method for line-based compression, the corresponding decoder can be obtained. The method also provides a heuristic-driven method for generating prediction residuals from quantized data, wherein prediction is driven in the direction of maximum correlation so that it is unnecessary to supply the decoder with additional data specifying this direction at each array element.
    Type: Application
    Filed: December 7, 2007
    Publication date: June 12, 2008
    Applicant: WiQuest Communications, Inc.
    Inventor: Felix C. Fernandes
  • Publication number: 20080137738
    Abstract: A method for line-based video rate control is provided. The line based video rate control method includes system feedback to change system operating parameters, including on a packet-by-packet basis and also on a line-by-line basis. Also provided is a method for line-based compression. The method includes basic elements of an arithmetic coder to improve Golomb coding performance. By inverting operations in the method for line-based compression, the corresponding decoder can be obtained. The method also provides a heuristic-driven method for generating prediction residuals from quantized data, wherein prediction is driven in the direction of maximum correlation so that it is unnecessary to supply the decoder with additional data specifying this direction at each array element.
    Type: Application
    Filed: December 7, 2007
    Publication date: June 12, 2008
    Applicant: WIQUEST COMMUNICATIONS, INC.
    Inventor: Felix C. Fernandes
  • Patent number: 7342962
    Abstract: Transcoding as from MPEG-2 SDTV to MPEG-4 CIF reuses motion vectors and downsamples in the frequency (DCT) domain with differing treatments of frame-DCT and field-DCT blocks, and alternatively uses de-interlacing IDCT with respect to the row dimension plus deferred column downsampling for reference frame blocks.
    Type: Grant
    Filed: September 17, 2003
    Date of Patent: March 11, 2008
    Assignee: Texas Instruments Incorporated
    Inventor: Felix C. Fernandes
  • Patent number: 7203237
    Abstract: Transcoding as from MPEG-2 SDTV to MPEG-4 CIF reuses motion vectors and downsamples in the frequency (DCT) domain with differing treatments of frame-DCT and field-DCT blocks, and alternatively uses de-interlacing IDCT with respect to the row dimension plus deferred column downsampling for reference frame blocks.
    Type: Grant
    Filed: September 17, 2003
    Date of Patent: April 10, 2007
    Assignee: Texas Instruments Incorporated
    Inventor: Felix C. Fernandes