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).
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Publication number: 20240388720Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for reducing a quantity of buffers for a video codec. One of the methods includes determining, from a plurality of prediction modes, a prediction mode for data that represents frame data in a frame; in response to determining the prediction mode, selecting, using the prediction mode, one or more buffers from a plurality of buffers, each buffer of which is for a prediction mode from the plurality of prediction modes, a first quantity of buffers in the plurality of buffers being less than a second quantity of prediction modes in the plurality of prediction modes; retrieving, from each of the one or more buffers, historical data for the frame data; and in response to retrieving the historical data, generating, using the historical data, updated data for the frame data in the frame of the video sequence.Type: ApplicationFiled: July 25, 2024Publication date: November 21, 2024Inventors: Yunfei Zheng, Alexandros Tourapis, Alican Nalci, Felix C. Fernandes, Hilmi Enes Egilmez, Hsi-Jung Wu, Jaehong Chon, Jun Xin, Yeqing Wu, Yixin Du
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Patent number: 12081769Abstract: A video encoding system in which pixel data is decomposed into frequency bands prior to encoding. The frequency bands for a slice of a frame may be buffered so that complexity statistics may be calculated across the frequency bands prior to encoding. The statistics may then be used by a rate control component in determining quantization parameters for the frequency bands for modulating the rate in the encoder for the current slice. The quantization parameters for the frequency bands may be calculated jointly to optimize the quality of the displayed frames after decoder reconstruction and wavelet synthesis on a receiving device. Information about one or more previously processed frames may be used in combination with the statistics for a current slice in determining the quantization parameters for the current slice.Type: GrantFiled: September 16, 2022Date of Patent: September 3, 2024Assignee: Apple Inc.Inventors: Hao Pan, Jim C. Chou, Felix C. Fernandes
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Patent number: 12010327Abstract: Block-based, low latency rate control for an encoding system in which a wavelet transform decomposes pixel blocks into subbands stored as subbands in wavelet blocks (WBs) for encoding. Quantization parameters (QPs) for the subbands in each WB are estimated using a method that minimizes wavelet-inverse distortion given a rate bound. For each subband, a rate curve is generated based on an unquantized DCT histogram and bit count statistics for the subband, and a distortion curve is generated based on the unquantized DCT histogram and a distortion estimate for the subband that is estimated using a masked estimator. Once the rate-distortion curves for the subbands are generated, a bisection search may be used to find a point on each curve where the slope is the same for all the curves. The QPs associated with those equally sloped points are the global minimizing QPs for the wavelet block.Type: GrantFiled: April 5, 2023Date of Patent: June 11, 2024Assignee: Apple Inc.Inventor: Felix C. Fernandes
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Publication number: 20230362387Abstract: Block-based, low latency rate control for an encoding system in which a wavelet transform decomposes pixel blocks into subbands stored as subbands in wavelet blocks (WBs) for encoding. Quantization parameters (QPs) for the subbands in each WB are estimated using a method that minimizes wavelet-inverse distortion given a rate bound. For each subband, a rate curve is generated based on an unquantized DCT histogram and bit count statistics for the subband, and a distortion curve is generated based on the unquantized DCT histogram and a distortion estimate for the subband that is estimated using a masked estimator. Once the rate-distortion curves for the subbands are generated, a bisection search may be used to find a point on each curve where the slope is the same for all the curves. The QPs associated with those equally sloped points are the global minimizing QPs for the wavelet block.Type: ApplicationFiled: April 5, 2023Publication date: November 9, 2023Applicant: Apple Inc.Inventor: Felix C. Fernandes
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Patent number: 11778211Abstract: Systems and methods of parallel image parsing and processing for video decoding are provided. Video decoder circuitry may enable an incoming encoded bitstream to be split into multiple bitstreams corresponding to the bitstream compression scheme and processed by multiple parsers corresponding to the bitstream compression scheme in parallel. This enables parallel decoding of the incoming bitstream and, thus, more efficient decoder processing.Type: GrantFiled: September 16, 2021Date of Patent: October 3, 2023Assignee: Apple Inc.Inventors: Yaxiong Zhou, Felix C. Fernandes, Jeffrey J. Irwin, Liviu R. Morogan, Sorin Constantin Cismas
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Patent number: 11665353Abstract: Block-based, low latency rate control for an encoding system in which a wavelet transform decomposes pixel blocks into subbands stored as subbands in wavelet blocks (WBs) for encoding. Quantization parameters (QPs) for the subbands in each WB are estimated using a method that minimizes wavelet-inverse distortion given a rate bound. For each subband, a rate curve is generated based on an unquantized DCT histogram and bit count statistics for the subband, and a distortion curve is generated based on the unquantized DCT histogram and a distortion estimate for the subband that is estimated using a masked estimator. Once the rate-distortion curves for the subbands are generated, a bisection search may be used to find a point on each curve where the slope is the same for all the curves. The QPs associated with those equally sloped points are the global minimizing QPs for the wavelet block.Type: GrantFiled: February 25, 2022Date of Patent: May 30, 2023Assignee: Apple Inc.Inventor: Felix C. Fernandes
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Publication number: 20230085391Abstract: Systems and methods of analyzing the luma statistics or chroma statistics to correct for image artifacts in decoded images. Video decoder circuitry may enable luma statistics collection circuitry housed in the loop filters to collect luma samples during the last stage of the decoding process. This enables output of luma statistics data and output of the decoded image together.Type: ApplicationFiled: February 2, 2022Publication date: March 16, 2023Inventors: Felix C. Fernandes, Liviu R. Morogan
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Publication number: 20230081975Abstract: Systems and methods of parallel image parsing and processing for video decoding are provided. Video decoder circuitry may enable an incoming encoded bitstream to be split into multiple bitstreams corresponding to the bitstream compression scheme and processed by multiple parsers corresponding to the bitstream compression scheme in parallel. This enables parallel decoding of the incoming bitstream and, thus, more efficient decoder processing.Type: ApplicationFiled: September 16, 2021Publication date: March 16, 2023Inventors: Yaxiong Zhou, Felix C. Fernandes, Jeffrey J. Irwin, Liviu R. Morogan, Sorin Constantin Cismas
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Publication number: 20230009707Abstract: A video encoding system in which pixel data is decomposed into frequency bands prior to encoding. The frequency bands for a slice of a frame may be buffered so that complexity statistics may be calculated across the frequency bands prior to encoding. The statistics may then be used by a rate control component in determining quantization parameters for the frequency bands for modulating the rate in the encoder for the current slice. The quantization parameters for the frequency bands may be calculated jointly to optimize the quality of the displayed frames after decoder reconstruction and wavelet synthesis on a receiving device. Information about one or more previously processed frames may be used in combination with the statistics for a current slice in determining the quantization parameters for the current slice.Type: ApplicationFiled: September 16, 2022Publication date: January 12, 2023Applicant: Apple Inc.Inventors: Hao Pan, Jim C. Chou, Felix C. Fernandes
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Patent number: 11451788Abstract: A video encoding system in which pixel data is decomposed into frequency bands prior to encoding. The frequency bands for a slice of a frame may be buffered so that complexity statistics may be calculated across the frequency bands prior to encoding. The statistics may then be used by a rate control component in determining quantization parameters for the frequency bands for modulating the rate in the encoder for the current slice. The quantization parameters for the frequency bands may be calculated jointly to optimize the quality of the displayed frames after decoder reconstruction and wavelet synthesis on a receiving device. Information about one or more previously processed frames may be used in combination with the statistics for a current slice in determining the quantization parameters for the current slice.Type: GrantFiled: June 27, 2019Date of Patent: September 20, 2022Assignee: Apple Inc.Inventors: Hao Pan, Jim C. Chou, Felix C. Fernandes
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Publication number: 20220182642Abstract: Block-based, low latency rate control for an encoding system in which a wavelet transform decomposes pixel blocks into subbands stored as subbands in wavelet blocks (WBs) for encoding. Quantization parameters (QPs) for the subbands in each WB are estimated using a method that minimizes wavelet-inverse distortion given a rate bound. For each subband, a rate curve is generated based on an unquantized DCT histogram and bit count statistics for the subband, and a distortion curve is generated based on the unquantized DCT histogram and a distortion estimate for the subband that is estimated using a masked estimator. Once the rate-distortion curves for the subbands are generated, a bisection search may be used to find a point on each curve where the slope is the same for all the curves. The QPs associated with those equally sloped points are the global minimizing QPs for the wavelet block.Type: ApplicationFiled: February 25, 2022Publication date: June 9, 2022Applicant: Apple Inc.Inventor: Felix C. Fernandes
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Patent number: 11265552Abstract: Block-based, low latency rate control for an encoding system in which a wavelet transform decomposes pixel blocks into subbands stored as subbands in wavelet blocks (WBs) for encoding. Quantization parameters (QPs) for the subbands in each WB are estimated using a method that minimizes wavelet-inverse distortion given a rate bound. For each subband, a rate curve is generated based on an unquantized DCT histogram and bit count statistics for the subband, and a distortion curve is generated based on the unquantized DCT histogram and a distortion estimate for the subband that is estimated using a masked estimator. Once the rate-distortion curves for the subbands are generated, a bisection search may be used to find a point on each curve where the slope is the same for all the curves. The QPs associated with those equally sloped points are the global minimizing QPs for the wavelet block.Type: GrantFiled: September 24, 2020Date of Patent: March 1, 2022Assignee: Apple Inc.Inventor: Felix C. Fernandes
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Publication number: 20210127117Abstract: A video encoding system in which pixel data is decomposed into frequency bands prior to encoding. The frequency bands for a slice of a frame may be buffered so that complexity statistics may be calculated across the frequency bands prior to encoding. The statistics may then be used by a rate control component in determining quantization parameters for the frequency bands for modulating the rate in the encoder for the current slice. The quantization parameters for the frequency bands may be calculated jointly to optimize the quality of the displayed frames after decoder reconstruction and wavelet synthesis on a receiving device. Information about one or more previously processed frames may be used in combination with the statistics for a current slice in determining the quantization parameters for the current slice.Type: ApplicationFiled: June 27, 2019Publication date: April 29, 2021Applicant: Apple Inc.Inventors: Hao Pan, Jim C. Chou, Felix C. Fernandes
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Patent number: 9520079Abstract: A method for providing display adaptation metadata (DAM) to a user equipment (UE) at a system level is provided. The method includes configuring DAM for storage in an ISO Base Media File Format (ISOBMFF). The method also includes transmitting the DAM to a UE to control an energy consumption of a presentation on a display of the UE. A method for providing display adaptation metadata (DAM) to a user equipment (UE) at a system level is provided. The method includes configuring DAM for carriage in an MPEG-2 transport system (M2TS). The method also includes transmitting the DAM to a UE to control an energy consumption of a presentation on a display of the UE.Type: GrantFiled: January 5, 2015Date of Patent: December 13, 2016Assignee: Samsung Electronics Co., Ltd.Inventors: Felix C. Fernandes, Imed Bouazizi, Youngkwon Lim
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Publication number: 20150279265Abstract: A method for providing display adaptation metadata (DAM) to a user equipment (UE) at a system level is provided. The method includes configuring DAM for storage in an ISO Base Media File Format (ISOBMFF). The method also includes transmitting the DAM to a UE to control an energy consumption of a presentation on a display of the UE. A method for providing display adaptation metadata (DAM) to a user equipment (UE) at a system level is provided. The method includes configuring DAM for carriage in an MPEG-2 transport system (M2TS). The method also includes transmitting the DAM to a UE to control an energy consumption of a presentation on a display of the UE.Type: ApplicationFiled: January 5, 2015Publication date: October 1, 2015Inventors: Felix C. Fernandes, Imed Bouazizi, Youngkwon Lim
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Patent number: 8995708Abstract: 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: GrantFiled: September 6, 2012Date of Patent: March 31, 2015Assignee: Samsung Electronics Co., Ltd.Inventors: Felix C. Fernandes, Karthikeyan S. Vadivel, Zhan Ma, Wang Lin Lai, Ankur Saxena
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Publication number: 20140177706Abstract: An image-encoding system that is configured to generate an output stream based on an input image is provided that includes an encoder and a metadata extractor. The encoder is configured to encode a low-resolution image to generate a quantized, low-resolution image. The low-resolution image is generated based on the input image. The metadata extractor is configured to extract super-resolution (SR) metadata from the input image. The output stream comprises the quantized, low-resolution image and the SR metadata. An image-decoding system is configured to receive the output stream. The image-decoding system includes a decoder and an SR processor. The decoder is configured to decode the quantized, low-resolution image to generate a decoded image. The super-resolution processor is configured to perform super-resolution on the decoded image based on the SR metadata to generate a super-resolved image.Type: ApplicationFiled: November 20, 2013Publication date: June 26, 2014Applicant: Samsung Electronics Co., LTDInventors: Felix C. Fernandes, Esmaeil Faramarzi, Muhammad Salman Asif, Zhan Ma
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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