Patents by Inventor Felix C.A. Fernandes
Felix C.A. 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).
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Publication number: 20140136727Abstract: A method includes calculating a complexity value for each segment or version of multimedia content. The multimedia content has multiple versions associated with common content and different encoding parameters, and each version is divided into segments. The method also includes adaptively streaming the multimedia content to a client device based on at least some of the calculated complexity values. The complexity value for each segment or version is calculated by summing multiple operation complexity values defining complexities of operations for decoding the segment or version. The operation complexity values could include values for a bit parsing operation, a buffer initialization operation, an intra-prediction operation, an inverse quantization and transform operation, a reference block fetch operation, a fractional interpolation operation, and in-loop deblocking operation, a sample adaptive offset correction operation, an adaptive loop filtering operation, and a de-ringing filtering operation.Type: ApplicationFiled: November 11, 2013Publication date: May 15, 2014Applicant: Samsung Electronics Co., LTDInventors: Youngkwon Lim, Zhan Ma, Kong Posh Bhat, Felix C.A. Fernandes
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Publication number: 20140072048Abstract: Apparatus and methods are provided to process a downsampled image. The downsampled image is encoded. The downsampled image is upsampled. The downsampled image is filtered in combination with the upsampling to form predictor image. Weights of a spatial weight matrix are based on a spatial scaling ratio.Type: ApplicationFiled: September 3, 2013Publication date: March 13, 2014Applicant: Samsung Electronics Co., LTDInventors: Qirong Ma, Wang Lin Lai, Zhan Ma, Felix C. A. Fernandes
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Publication number: 20140055504Abstract: Apparatus and methods scale a backlight of a display. A graphics processing unit (GPU) is configured to calculate a histogram. A central processing unit (CPU) is configured to control the backlight of the display responsive to a backlight level that is based on the histogram.Type: ApplicationFiled: August 22, 2013Publication date: February 27, 2014Applicant: Samsung Electronics Co., Ltd.Inventors: Mian Dong, Xin Zhao, Felix C. A. Fernandes
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Publication number: 20130278642Abstract: Segments for a video are transmitted in payload units with an extended network abstraction layer unit (NALU) header or supplemental enhancement information (SEI) message within which is embedded display adaptation information that may be employed to control display brightness and thereby reduce power consumption during display of the respective segment. The display adaptation information includes at least a maximum pixel brightness that may be used to scale pixel brightness and correspondingly reduce backlighting for liquid crystal displays, or to adjust the supply voltage for OLED displays. The maximum pixel brightness is set to a level saturating a portion of the pixel histogram without perceptual loss to the viewer, resulting in further reduction of power consumption.Type: ApplicationFiled: March 11, 2013Publication date: October 24, 2013Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Mian Dong, Zhan Ma, Felix C.A. Fernandes, Sungoh Hwang
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Publication number: 20130278834Abstract: Segments for a video are transmitted in payload units with an extended network abstraction layer unit (NALU) header within which is embedded display adaptation information that may be employed to control display brightness and thereby reduce power consumption during display of the respective segment. The display adaptation information includes at least a maximum pixel brightness that may be used to scale pixel brightness to maximum and correspondingly reduce backlighting for liquid crystal displays, or to adjust the supply voltage for OLED displays. The display adaptation information may optionally include a minimum pixel brightness, a pixel histogram step size, and an indicator of scaling method.Type: ApplicationFiled: March 11, 2013Publication date: October 24, 2013Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Zhan Ma, Mian Dong, Felix C.A. Fernandes, Sungoh Hwang
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Publication number: 20130064417Abstract: An apparatus and method for video fingerprinting are provided. The method includes, for each frame of a video sequence including a plurality of frames, removing a portion of the frame, dividing a remaining portion of the frame into blocks, dividing each block into sub-blocks, computing a block level feature as a mean of pixels in each sub-block within the block, concatenating all block level features in the frame, and concatenating features of all frames in the video sequence.Type: ApplicationFiled: September 6, 2012Publication date: March 14, 2013Applicant: SAMSUNG ELECTRONICS CO. LTD.Inventors: Felix C. FERNANDES, Karthikeyan S. VADIVEL, Zhan MA, Wang Lin LAI, Ankur SAXENA
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Patent number: 8300699Abstract: 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: GrantFiled: May 31, 2007Date of Patent: October 30, 2012Assignee: QUALCOMM IncorporatedInventors: Fred S. Stivers, Felix C. Fernandes, Sidney B. Schrum, Jr., Matthew B. Shoemake
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Patent number: 8208554Abstract: 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: GrantFiled: December 7, 2007Date of Patent: June 26, 2012Assignee: QUALCOMM IncorporatedInventor: Felix C. Fernandes
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Patent number: 8165203Abstract: 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: GrantFiled: December 7, 2007Date of Patent: April 24, 2012Assignee: QUALCOMM IncorporatedInventor: Felix C. Fernandes
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Patent number: 7995143Abstract: 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: GrantFiled: February 10, 2006Date of Patent: August 9, 2011Assignee: QUALCOMM IncorporatedInventors: Gregory L. Christison, Fred S. Stivers, Felix C. Fernandes
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Patent number: 7852941Abstract: 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: GrantFiled: July 2, 2008Date of Patent: December 14, 2010Assignee: Texas Instruments IncorporatedInventor: Felix C. Fernandes
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Publication number: 20080298463Abstract: 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: ApplicationFiled: May 31, 2007Publication date: December 4, 2008Applicant: WIQUEST COMMUNICATIONS, INC.Inventors: Fred S. Stivers, Felix C. Fernandes, Sidney B. Schrum, JR., Matthew B. Shoemake
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Publication number: 20080267294Abstract: 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: ApplicationFiled: July 2, 2008Publication date: October 30, 2008Applicant: Texas Instruments IncorporatedInventor: Felix C. Fernandes
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Patent number: 7412003Abstract: 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: GrantFiled: September 17, 2003Date of Patent: August 12, 2008Assignee: Texas Instruments IncorporatedInventor: Felix C. Fernandes
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Publication number: 20080137738Abstract: 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: ApplicationFiled: December 7, 2007Publication date: June 12, 2008Applicant: WIQUEST COMMUNICATIONS, INC.Inventor: Felix C. Fernandes
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Publication number: 20080137737Abstract: 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: ApplicationFiled: December 7, 2007Publication date: June 12, 2008Applicant: WiQuest Communications, Inc.Inventor: Felix C. Fernandes
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Patent number: 7342962Abstract: 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: GrantFiled: September 17, 2003Date of Patent: March 11, 2008Assignee: Texas Instruments IncorporatedInventor: Felix C. Fernandes
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Patent number: 7203237Abstract: 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: GrantFiled: September 17, 2003Date of Patent: April 10, 2007Assignee: Texas Instruments IncorporatedInventor: Felix C. Fernandes