Specific Decompression Process Patents (Class 375/240.25)
  • Patent number: 12003705
    Abstract: An image decoding method performed by a decoding device according to the present document comprises the steps of: obtaining image information including an output layer set (OLS) decoded picture buffer (DPB) parameter index for a target OLS and DPB parameter information; deriving DPB parameter information for the target OLS on the basis of the OLS DPB parameter index; performing a picture management process on pictures of a DPB on the basis of the DPB parameter information for the target OLS; configuring a reference picture list for a current picture on the basis of the pictures of the DPB; and performing an inter prediction on a block in the current picture on the basis of the reference picture list.
    Type: Grant
    Filed: May 16, 2023
    Date of Patent: June 4, 2024
    Assignee: LG Electronics Inc.
    Inventor: Hendry Hendry
  • Patent number: 12002189
    Abstract: The technology disclosed herein involves using a machine learning model (e.g., CNN) to expand lower dynamic-range image content (e.g., SDR images) into higher dynamic-range image content (e.g., HDR images). The machine learning model can take as input the lower dynamic-range image and can output multiple expansion maps that are used to make the expanded image appear more natural. The expansion maps may be used by image operators to smooth color banding and to dim overexposed regions or user interface elements in the expanded image. The expanded content (e.g., HDR image content) may then be provided to one or more devices for display or storage.
    Type: Grant
    Filed: March 2, 2022
    Date of Patent: June 4, 2024
    Assignee: Nvidia Corporation
    Inventors: Shaveen Kumar, Anjul Patney, Eric Xu, Anton Moor
  • Patent number: 12003747
    Abstract: A method of decoding an encoded video bitstream using at least one processor includes obtaining a coded video sequence including a plurality of output layer sets from the encoded video bitstream; obtaining a first flag indicating whether each output layer set of the plurality of output layer sets includes more than one layer; based on the first flag indicating that the each output layer set includes more than the one layer, obtaining a first syntax element indicating an output layer set mode; selecting at least one layer from among layers included in the plurality of output layer sets as at least one output layer based on at least one of the first flag and the first syntax element; and outputting the at least one output layer.
    Type: Grant
    Filed: January 19, 2022
    Date of Patent: June 4, 2024
    Assignee: TENCENT AMERICA LLC
    Inventors: Byeongdoo Choi, Stephan Wenger, Shan Liu
  • Patent number: 11997257
    Abstract: A method of decoding a coded video bitstream. The method includes obtaining a first reference picture list of a current slice represented in the coded video bitstream and a second reference picture list of the current slice, and marking a status of a reference picture in a decoded picture buffer (DPB) based on the first reference picture list and the second reference picture list when the current slice is a first slice in a current picture to which the current slice belongs. The status of the reference picture in the decoded picture buffer is used for short-term reference, used for long-term reference, or unused for reference. The method also includes using the reference picture in a reconstructing process of the current picture or a picture following the current picture when the status of the reference picture is used for short-term reference or used for long-term reference.
    Type: Grant
    Filed: January 18, 2022
    Date of Patent: May 28, 2024
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Fnu Hendry, Ye-Kui Wang
  • Patent number: 11985331
    Abstract: An image decoding method according to the present invention includes: receiving information on a set of reference pictures for configuring a set of reference pictures of a current picture, wherein the information on the set of reference pictures includes the most significant bit (MSB) information that may calculate the MSB of the picture order count (POC) of a long-term reference picture relative to the current picture, and flag information that represents whether there is MSB information; and eliciting the set of reference pictures by using received MSB information when the flag information is 1, and performing marking on the reference picture, wherein the flag information may be 1 when a temporal sub-layer identifier is 0, and there is at least one POC value for which a remainder obtained by dividing by a maximum value MaxPicOrderCntLsb capable of being represented by the LSB is the same as the least significant bit (LSB) of the POC of the long-term reference picture, in a set of POCs of a previous picture
    Type: Grant
    Filed: April 12, 2023
    Date of Patent: May 14, 2024
    Assignee: LG ELECTRONICS INC.
    Inventors: Hendry Hendry, Joonyoung Park, Chulkeun Kim, Byeongmoon Jeon, Jungsun Kim
  • Patent number: 11985318
    Abstract: An encoder for video encoding and decoding with long term reference picture retention. The encoder generates an encoded bitstream for a compliant decoder. At the decoder, coded pictures are decoded using a list of references pictures, of which at least one is a long term reference picture. A first picture is decoded using the long term reference picture. A second picture is decoded without using the long term reference picture which is inactive but is retained in a buffer. A subsequent picture is then decoded again using the long term reference picture.
    Type: Grant
    Filed: February 2, 2023
    Date of Patent: May 14, 2024
    Assignee: OP Solultions, LLC
    Inventors: Borivoje Furht, Hari Kalva, Velibor Adzic
  • Patent number: 11979592
    Abstract: A method of video decoding includes receiving a syntax element associated with a current coding block that is partitioned into a first part and a second part along a partition edge for prediction in a geometric partitioning mode. The method further includes determining a weight index at a sample position of the current coding block, and determining a stored motion vector type for a first motion storage unit in a motion field of the current coding block based on a motion index of the first motion storage unit. The method further includes storing the motion field of the current coding block based on the stored motion vector type determined for the first motion storage unit.
    Type: Grant
    Filed: October 27, 2022
    Date of Patent: May 7, 2024
    Assignee: TENCENT AMERICA LLC
    Inventors: Lien-Fei Chen, Xiang Li, Guichun Li, Shan Liu
  • Patent number: 11979553
    Abstract: A method of decoding a coded video bitstream is provided. The method includes parsing a parameter set represented in the coded video bitstream. The parameter set contains a set of syntax elements that include a set of reference picture list structures. The method also includes parsing a slice header of a current slice represented in the coded video bitstream. The slice header contains an index of a reference picture list structure among the set of reference picture list structures in the parameter set. The method further includes deriving, based on the set of syntax elements in the parameter set and the index of the reference picture list structure, a reference picture list of the current slice. The method also includes obtaining, based on the reference picture list, at least one reconstructed block of the current slice.
    Type: Grant
    Filed: February 16, 2021
    Date of Patent: May 7, 2024
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Ye-Kui Wang, FNU Hendry
  • Patent number: 11979561
    Abstract: A video processing method includes performing a conversion between a video having one or more video layers including one or more video pictures and a bitstream of the video according to a format rule. The format rule specifies that a first video picture is an associated intra random access point picture of a second picture and that the second picture are constrained to belong to a same video layer.
    Type: Grant
    Filed: September 16, 2022
    Date of Patent: May 7, 2024
    Assignee: BYTEDANCE INC.
    Inventor: Ye-kui Wang
  • Patent number: 11972594
    Abstract: A multifunction peripheral includes a color number conversion determiner. The color number conversion determiner determines whether it is appropriate to perform either an index color process or a full-color process based on a color distribution degree, which is a distribution degree of pixel values of the respective sets of pixel data included in input image data, a photograph area ratio, which is a ratio of photograph area pixel data forming a photograph area to the pixel data, and a color uniformity area ratio, which is a ratio of white base area pixel data forming a white base area to the pixel data.
    Type: Grant
    Filed: February 16, 2022
    Date of Patent: April 30, 2024
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Teruhiko Matsuoka, Akihito Yoshida, Masahiko Takashima
  • Patent number: 11962793
    Abstract: There is provided methods, apparatuses and computer program products for video coding and decoding. A first part of a first coded video representation is decoded, and information on decoding a second coded video representation is received and parsed. The coded second representation differs from the first coded video representation in chroma format, sample bit depth, color gamut and/or spatial resolution, and the information indicates if the second coded video representation may be decoded using processed decoded pictures of the first coded video representation as reference pictures.
    Type: Grant
    Filed: May 9, 2022
    Date of Patent: April 16, 2024
    Assignee: NOKIA TECHNOLOGIES OY
    Inventor: Miska Matias Hannuksela
  • Patent number: 11962789
    Abstract: A computing device performs a method of decoding video data by reconstructing a luma block corresponding to a chroma block; searching a sub-group of a plurality of reconstructed neighboring luma samples in a predefined order to identify a maximum luma sample and a minimum luma sample; computing a down-sampled maximum luma sample corresponding to the maximum luma sample; computing a down-sampled minimum luma sample corresponding to the minimum luma sample; generating a linear model using the down-sampled maximum luma sample, the down-sampled minimum luma sample, the first reconstructed chroma sample, and the second reconstructed chroma sample; computing down-sampled luma samples from luma samples of the reconstructed luma block, wherein each down-sampled luma sample corresponds to a chroma sample of the chroma block; and predicting chroma samples of the chroma block by applying the liner model to the corresponding down-sampled luma samples.
    Type: Grant
    Filed: March 24, 2023
    Date of Patent: April 16, 2024
    Assignee: BEIJING DAJIA INTERNET INFORMATION TECHNOLOGY CO., LTD.
    Inventors: Yi-Wen Chen, Xianglin Wang
  • Patent number: 11949910
    Abstract: Methods (1500, 1600) and apparatuses (700, 900, 1700) for video coding and decoding are provided. The method of video encoding (1500) includes determining (1510) a set of parameters for illumination compensation associated with a first motion compensated reference block of a block in a picture of a video based on a function of a set of samples of the first motion compensated reference block and a set of samples of a second motion compensated reference block of the block, processing (1520) a prediction of the block based on the set of parameters, the prediction being associated with the first motion compensated reference block and encoding (1530) the block based on the processed prediction. A bitstream formatted to include encoded data, a computer-readable storage medium and a computer program product are also described.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: April 2, 2024
    Assignee: InterDigital VC Holdings, Inc.
    Inventors: Philippe Bordes, Franck Galpin, Fabien Racape
  • Patent number: 11943459
    Abstract: Signalling of syntax elements in a sequence parameter set of a video bitstream is addressed. Particularly, it is provided a method of decoding a video bitstream wherein a sequence parameter set, SPS, is coded that contains syntax elements that apply to a video sequence, the method comprising obtaining a value of a first syntax element from the SPS used to specify whether a decoded picture buffer, DPB, parameters syntax structure is present in the SPS and obtaining a value of a second syntax element from the SPS, at least when determining that the value of the first syntax element specifies that the DPB parameters syntax structure is present in the SPS, used to specify the presence of a DPB syntax element in the DPB parameters syntax structure, wherein the DPB syntax element is applied to a temporal sublayer except for the highest temporal sublayer in the video sequence.
    Type: Grant
    Filed: December 15, 2022
    Date of Patent: March 26, 2024
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Biao Wang, Semih Esenlik, Anand Meher Kotra, Elena Alexandrovna Alshina, Han Gao
  • Patent number: 11943428
    Abstract: A method of decoding a coded video bitstream is provided. The method includes parsing a parameter set represented in the coded video bitstream. The parameter set contains a set of syntax elements that include a set of reference picture list structures. The method also includes parsing a slice header of a current slice represented in the coded video bitstream. The slice header contains an index of a reference picture list structure among the set of reference picture list structures in the parameter set. The method further includes deriving, based on the set of syntax elements in the parameter set and the index of the reference picture list structure, a reference picture list of the current slice. The method also includes obtaining, based on the reference picture list, at least one reconstructed block of the current slice.
    Type: Grant
    Filed: February 16, 2021
    Date of Patent: March 26, 2024
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Ye-Kui Wang, FNU Hendry
  • Patent number: 11936889
    Abstract: A video data stream having a video encoded thereinto and is described. It includes first timing information on first coded picture buffer, CPB, removal times to be applied at decoder side in case of buffering a complete version of the video data stream, and second timing information on second CPB removal times to be applied at decoder side for buffering a reduced version of the video data stream, differing from the video data stream by removal of a portion of the video data stream from the complete version of the video data stream. Corresponding video encoders, video decoders, network nodes, apparatuses for managing the coded picture buffer, CPB, of a video decoder, and apparatuses for splicing together video data streams are also referred to.
    Type: Grant
    Filed: August 30, 2021
    Date of Patent: March 19, 2024
    Assignee: FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
    Inventors: Robert Skupin, Yago Sánchez De La Fuente, Cornelius Hellge, Thomas Schierl, Karsten Sühring, Thomas Wiegand
  • Patent number: 11936886
    Abstract: An encoder includes memory and circuitry coupled to the memory. The circuitry, for each of temporal sub-layers for temporal scalability different from spatial scalability, stores first parameters into buffering period supplemental enhancement information (SEI) and encodes the first parameters. The first parameters present initial delays in timing to extract data from a coded picture buffer (CPB). The circuitry stores a second parameter into the buffering period SEI and encodes the second parameter. The second parameter indicates a total number of the temporal sub-layers. A value of the second parameter is equal to a value of a third parameter that is encoded into a sequence parameter set and indicates a total number of the temporal sub-layers.
    Type: Grant
    Filed: December 10, 2021
    Date of Patent: March 19, 2024
    Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
    Inventors: Virginie Drugeon, Tadamasa Toma, Takahiro Nishi, Kiyofumi Abe, Yusuke Kato
  • Patent number: 11917208
    Abstract: Several techniques for video encoding and video decoding are described. One example method includes performing a conversion between a subpicture in a video picture of a video and a bitstream of the video according to a rule. The rule specifies that multiple syntax elements are used to specify usage of a reference picture resampling tool.
    Type: Grant
    Filed: September 21, 2022
    Date of Patent: February 27, 2024
    Assignees: BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD., BYTEDANCE INC.
    Inventors: Ye-kui Wang, Li Zhang, Kai Zhang, Zhipin Deng
  • Patent number: 11917177
    Abstract: A media content processing device may decode visual volumetric content based on one or more messages, which may indicate which attribute sub-bitstream of one or more attribute sub-bitstreams indicated in a parameter set is active, The parameter set may include a visual volumetric video-based parameter set. The message indicating one or more active attribute sub-bitstreams may be received by the decoder, A decoder may perform decoding, such as determining which attribute sub-bitstream to use for decoding visual media content, based on the one or more messages, The one or more messages may be generated and sent to a decoder, for example, to indicate the deactivation of the one or more attribute sub-bitstreams. The decoder may determine an inactive attribute sub-bitstream and skip the inactive attribute sub-bitstream for decoding the visual media content based on the one or more messages.
    Type: Grant
    Filed: July 2, 2020
    Date of Patent: February 27, 2024
    Assignee: VID Scale, Inc.
    Inventor: Ahmed Hamza
  • Patent number: 11917173
    Abstract: A video coding mechanism is disclosed. The mechanism includes receiving a bitstream comprising one or more sub-pictures partitioned from a picture such that each sub-picture includes a sub-picture width that is an integer multiple of a coding tree unit (CTU) size when the each sub-picture includes a right boundary that does not coincide with a right boundary of the picture. The bitstream is parsed to obtain the one or more sub-pictures. The one or more sub-pictures are decoded to create a video sequence. The video sequence is forwarded for display.
    Type: Grant
    Filed: July 8, 2021
    Date of Patent: February 27, 2024
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Ye-Kui Wang, FNU Hendry
  • Patent number: 11917134
    Abstract: A method of decoding a coded video bitstream implemented by a video decoder is provided. The method includes the video decoder determining whether a value for a first flag is provided by an external input; setting a first flag equal to the value provided by the external input and a second flag equal to the value of the first flag to prevent a gradual decoding refresh (GDR) picture from being output when the value for the first flag is provided by the external input; decoding the GDR picture; and storing the GDR picture in a decoded picture buffer (DPB).
    Type: Grant
    Filed: September 9, 2021
    Date of Patent: February 27, 2024
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Fnu Hendry, Ye-Kui Wang, Jianle Chen
  • Patent number: 11917211
    Abstract: Techniques for video processing, including video coding, video decoding and video transcoding are described. One example method includes performing a conversion between a video including a video picture including a video tile including one or more slices and a bitstream of the video according to a rule. The rule specifies that a second slice in a tile that includes a first slice in a picture has a height that is represented in a unit of coding tree units. The first slice has a first slice index, and the second slice has a second slice index that is determined based on the first slice index and a number of explicitly provided slice heights in the video tile. The height of the second slice is determined based on the first slice index and the second slice index.
    Type: Grant
    Filed: August 22, 2022
    Date of Patent: February 27, 2024
    Assignees: BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD., BYTEDANCE INC.
    Inventors: Kai Zhang, Li Zhang, Ye-Kui Wang, Zhipin Deng, Kui Fan, Jizheng Xu, Hongbin Liu
  • Patent number: 11917130
    Abstract: A video coding mechanism for viewpoint dependent video coding is disclosed. The mechanism includes receiving a spherical video signal stitched from multiple directional video streams. The spherical video signal is mapped into a plurality of sub-picture video signals each containing a sequence of sub-pictures. The plurality of sub-picture video signals, are encoded as a plurality of sub-picture bitstreams, such that, when decoded at a decoder, a value of each sample in each sub-picture is identical to a value of a corresponding sample in a decoded entire picture composed from the sub-pictures. The plurality of sub-picture bitstreams are composed into a plurality of sub-picture tracks with an indication that the sub-picture tracks are conforming to a particular video profile. The sub-picture bitstreams are transmitted toward a decoder to support decoding and displaying virtual reality video viewport.
    Type: Grant
    Filed: July 5, 2022
    Date of Patent: February 27, 2024
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Ye-Kui Wang, Huameng Fang, Yuqun Fan, Jianle Chen
  • Patent number: 11902552
    Abstract: Systems, methods and apparatus for encoding or decoding a file format that stores one or more images are described. One example method includes performing a conversion between a visual media file and a bitstream of a visual media data according to a format rule, wherein the format rule specifies a characteristic of a syntax element in the visual media file, wherein the syntax element has a value that is indicative of a number of bytes used for indicating a constraint information associated with the bitstream.
    Type: Grant
    Filed: September 15, 2021
    Date of Patent: February 13, 2024
    Assignee: Lemon Inc.
    Inventor: Ye-Kui Wang
  • Patent number: 11891932
    Abstract: A method of encoding video including: writing a plurality of predetermined buffer descriptions into a sequence parameter set of a coded video bitstream; writing a plurality of updating parameters into a slice header of the coded video bitstream for selecting and modifying one buffer description out of the plurality of buffer descriptions; and encoding a slice into the coded video bitstream using the slice header and the modified buffer description.
    Type: Grant
    Filed: July 15, 2022
    Date of Patent: February 6, 2024
    Assignee: SUN PATENT TRUST
    Inventors: Viktor Wahadaniah, Chong Soon Lim, Sue Mon Thet Naing, Hai Wei Sun, Takahiro Nishi, Hisao Sasai, Youji Shibahara, Toshiyasu Sugio, Kyoko Tanikawa, Toru Matsunobu
  • Patent number: 11889056
    Abstract: Video processing methods comprise receiving input data of a current block in a current picture having a plurality of Virtual Pipeline Data Units (VPDUs), wherein each VDPU is a fixed size, performing a decoding process to decode Coding Units (CUs) in the current VPDU and generate decoded samples of the current VPDU, wherein each CU coded in a Current Picture Referencing (CPR) mode is decoded by fetching decoded samples in a reference block stored in a CPR referring buffer, and updating the CPR referring buffer by storing the decoded samples of the current VPDU when finishing the decoding process of the current VPDU, wherein the CPR referring buffer is updated one VPDU by one VPDU.
    Type: Grant
    Filed: January 3, 2022
    Date of Patent: January 30, 2024
    Assignee: HFI INNOVATION INC.
    Inventors: Chen-Yen Lai, Yu-Ling Hsiao, Tzu-Der Chuang, Ching-Yeh Chen
  • Patent number: 11882271
    Abstract: Several techniques for video encoding and video decoding are described. One example method includes performing a conversion between a video unit of a current picture of a video and a bitstream of the video according to a rule. The rule specifies that, for a given picture to be available as a reference picture whose motion information is used for the conversion, the given picture has a same coding tree unit size or a same coding tree block size as the current picture.
    Type: Grant
    Filed: December 19, 2022
    Date of Patent: January 23, 2024
    Assignees: BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD., BYTEDANCE INC.
    Inventors: Zhipin Deng, Li Zhang
  • Patent number: 11871021
    Abstract: A decoding device includes a transformer sets a decoded luminance component of a prediction target block to the same number of samples as that of the chrominance component corresponding to the decoded luminance component of the prediction target block and generates a luminance reference signal. A specificator specifies luminance pixels having minimum and maximum pixel values of the decoded luminance component adjacent to the decoded luminance component of the prediction target block, respectively, outputs luminance pixel values obtained from specified luminance pixels, and outputs chrominance pixel values from pigment pixels corresponding to the luminance pixels. A derivator derives a linear prediction parameter from the two pixel values and a linear prediction model. A chrominance linear predictor obtains chrominance prediction signal applying the linear prediction model based on the linear prediction parameter to the luminance reference signal.
    Type: Grant
    Filed: July 26, 2022
    Date of Patent: January 9, 2024
    Assignee: KDDI CORPORATION
    Inventors: Kei Kawamura, Sei Naito
  • Patent number: 11863738
    Abstract: Techniques for encoding video with motion compensation include a compressed bitstream syntax that includes a list of all motion prediction reference frames without distinguishing between short-term reference frame and long-term reference frames. The list of reference frames may be provided in a slice header and may apply to encoded data video data within the corresponding slice. The list may be prefaced with a single number indicating the total number of reference frames. In an aspect delta POC reference numbers may be encoded with a flag indicating the sign of the delta POC when the absolute value of the POC is not equal to zero. In another aspect, a flag may be encoded for every reference frame indicating if POC information should be used when scaling prediction references, and a weighting parameter may be included when POC information should be used.
    Type: Grant
    Filed: December 2, 2021
    Date of Patent: January 2, 2024
    Assignee: APPLE INC.
    Inventors: Alexandros Tourapis, Jungsun Kim, Krishnakanth Rapaka, David W. Singer
  • Patent number: 11853377
    Abstract: Apparatus for performing searching of a plurality of reference images, the apparatus including one or more electronic processing devices that search the plurality of reference images to identify first reference images similar to a sample image, identify image tags associated with at least one of the first reference image, search the plurality of reference images to identify second reference images using at least one of the image tags and provide search results including at least some first and second reference images.
    Type: Grant
    Filed: September 26, 2014
    Date of Patent: December 26, 2023
    Assignee: SEE-OUT PTY LTD
    Inventor: Sandra Mau
  • Patent number: 11849134
    Abstract: A method of decoding is provided. The method includes receiving a video bitstream including a plurality of layers and a sequence parameter set (SPS) including a flag, wherein each of the plurality of layers referring to the SPS has a same set of (DPB) parameters regardless of whether each of the plurality of layers is an output layer or a non-output layer when the flag has a first value, and wherein each of the plurality of layers referring to the SPS has a first set of DPB parameters that apply to output layers and a second set of DPB parameters that apply to non-output layers when the flag has a second value; and decoding a picture from one of the plurality of layers to obtain a decoded picture. A corresponding method of encoding is also provided.
    Type: Grant
    Filed: March 22, 2022
    Date of Patent: December 19, 2023
    Assignee: Huawei Technologies Co., Ltd.
    Inventor: Ye-Kui Wang
  • Patent number: 11836388
    Abstract: Data segments and metadata segments to be stored in a storage system, where the data segments are deduplicated segments and each of the metadata segments includes a fingerprint for the corresponding data segment, for each of the metadata segments. It is determined that the metadata segment contains one or markers inserted by a client device of the storage system. The metadata segment is examined to determine whether the metadata segment satisfies a predetermined condition. In response to determining that the metadata satisfies the predetermined condition, the metadata segment is compressed using a predetermined compression algorithm. The compressed metadata segment is stored in the storage system, otherwise the metadata segment is stored in the storage system without compression. Thereafter, the data segments are stored in the storage system.
    Type: Grant
    Filed: April 21, 2021
    Date of Patent: December 5, 2023
    Assignee: EMC IP HOLDING COMPANY LLC
    Inventors: Sandeep Nirmale, Ramprasad Chinthekindi, Gobikrishnan Sundharraj, Rahul Goyal
  • Patent number: 11825139
    Abstract: Systems and methods for optimizing a content change process arm provided. In example embodiments, a digital receiver causes playback of a first piece of content. The digital receiver receives a selection of a new piece of content for playback during the playback of the first piece of content. In response to the receiving of the selection, the digital receiver maintains a bitrate used for playback of the first piece of content to initiate playback of the new piece of content.
    Type: Grant
    Filed: November 9, 2021
    Date of Patent: November 21, 2023
    Assignee: OPENTV, INC.
    Inventors: Amarendra N. Gogoi, Sanjay Kumar Gupta, Ravikant Swami
  • Patent number: 11825107
    Abstract: A method of decoding an encoded video bitstream using at least one processor, including obtaining a coded video sequence from the encoded video bitstream; obtaining a picture unit from the coded video sequence; obtaining a PH NAL unit included in the picture unit; obtaining at least one coded slice NAL unit included in the picture unit; decoding a coded picture based on the PH NAL unit, the at least one coded slice NAL unit a PPS NAL unit obtained from the coded video sequence, and am SPS NAL unit obtained from the coded video sequence; and outputting the decoded picture, wherein the SPS NAL unit is available to the at least one processor before the PPS NAL unit, and wherein the PPS NAL unit is available to the at least one processor before the PH NAL unit and the at least one coded slice NAL unit.
    Type: Grant
    Filed: October 5, 2020
    Date of Patent: November 21, 2023
    Assignee: TENCENT AMERICA LLC
    Inventors: Byeongdoo Choi, Shan Liu, Stephan Wenger
  • Patent number: 11818398
    Abstract: A method of decoding video data includes: receiving a video parameter set; parsing a first syntax element in the video parameter set, wherein the first syntax element plus one specifies a maximum allowed number of layers in each coded video sequence referring to the video parameter set; and parsing a second syntax element in the video parameter set, in a case that a value of the first syntax element is greater than a threshold value, wherein the second syntax element plus one specifies a number of profile tier level syntax structure in the video parameter set.
    Type: Grant
    Filed: April 27, 2021
    Date of Patent: November 14, 2023
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Sachin G. Deshpande
  • Patent number: 11800124
    Abstract: An electronic apparatus performs a method of decoding video data. The method comprises: receiving the video signal that includes a first component and a second component; receiving a plurality of offsets associated with the second component; utilizing a sample value of the first component to obtain a classifier associated with the second component; dividing a range of the sample value of the first component into several bands based on the classifier; selecting a band based on an intensity value of the sample value of the first component; selecting an offset from the plurality of offsets for the second component according to the selected band; and modifying the second component based on the selected offset.
    Type: Grant
    Filed: July 28, 2021
    Date of Patent: October 24, 2023
    Assignee: BEIJING DAJIA INTERNET INFORMATION TECHNOLOGY CO., LTD.
    Inventors: Che-Wei Kuo, Xiaoyu Xiu, Wei Chen, Xianglin Wang, Yi-Wen Chen, Tsung-Chuan Ma, Hong-Jheng Jhu, Bing Yu
  • Patent number: 11785220
    Abstract: A method of decoding includes receiving a first picture parameter set and a second picture parameter set each referring to same sequence parameter set, the first picture parameter set and the second picture parameter set having same values of a conformance window when the first picture parameter set and the second picture parameter set have same values of picture width and picture height, and applying the conformance window to a current picture corresponding to the first picture parameter set or the second picture parameter set.
    Type: Grant
    Filed: December 29, 2021
    Date of Patent: October 10, 2023
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Jianle Chen, F N U Hendry
  • Patent number: 11785207
    Abstract: Video processing methods comprise receiving input data of a current block in a current picture, constructing a candidate list for the current block by including one or more History-based Motion Vector Predictor (HMVP) candidates, selecting one candidate from the candidate list, locating a reference block according to motion information of the selected candidate, and encoding or decoding the current block by predicting the current block using the reference block. The one or more HMVP candidates are fetched from a normal HMVP table if the current block is to be processed by a normal inter prediction mode, and the one or more HMVP candidates are fetched form a Current Picture Referencing (CPR) HMVP table if the current block is to be processed by a CPR mode. The two HMVP tables are separately maintained and updated.
    Type: Grant
    Filed: January 3, 2022
    Date of Patent: October 10, 2023
    Assignee: HFI INNOVATION INC.
    Inventors: Chen-Yen Lai, Yu-Ling Hsiao, Tzu-Der Chuang, Ching-Yeh Chen
  • Patent number: 11785237
    Abstract: The present disclosure provides systems and methods for wrap-around motion compensation. One exemplary method comprises: receiving a wrap-around motion compensation flag; determining whether a wrap-around motion compensation is enabled based on the wrap-around motion compensation flag; in response to a determination that the wrap-around motion compensation is enabled, receiving data indicating a difference between a width of the picture and an offset used for determining a horizontal wrap-around position; and performing a motion compensation according to the wrap-around motion compensation flag and the difference.
    Type: Grant
    Filed: March 26, 2021
    Date of Patent: October 10, 2023
    Assignee: Alibaba Group Holding Limited
    Inventors: Jie Chen, Jiancong Luo, Yan Ye
  • Patent number: 11778208
    Abstract: An image coding method of hierarchically coding a plurality of pictures to generate a bitstream, includes: coding each of the plurality of pictures, which belongs to any one of a plurality of hierarchical layers, with reference to a picture belonging to a hierarchical layer which is same as or lower than a hierarchical layer to which the picture belongs, and without reference to a picture belonging to a hierarchical layer which is higher than the hierarchical layer to which the picture belongs; and generating the bitstream by coding the coded pictures and time information indicating decoding times of the coded pictures. The time information indicates that the decoding times are set at equal intervals for low-layer pictures which are the plurality of pictures other than highest-layer pictures belonging to a highest layer among the plurality of hierarchical layers.
    Type: Grant
    Filed: January 17, 2020
    Date of Patent: October 3, 2023
    Assignee: SUN PATENT TRUST
    Inventors: Kengo Terada, Takahiro Nishi, Hisao Sasai
  • Patent number: 11777530
    Abstract: Methods and apparatuses for generating optimized LDPC codes are proposed. One of the methods is a method for generating an optimized LDPC code for an asymmetric transmis¬ sion channel. The method includes receiving an initial LDPC code for the asymmetric transmission channel. Further, the method includes performing a density evolution threshold optimization for the initial LDPC code in order to obtain the optimized LDPC code for the asymmetric transmission channel. A uniformly mixed symmetric channel density for the asymmetric transmission channel is used in the density evolution threshold optimization.
    Type: Grant
    Filed: November 5, 2020
    Date of Patent: October 3, 2023
    Assignee: Intel Corporation
    Inventors: Ravi Motwani, Poovaiah Palangappa, Santosh Emmadi, Santhosh K. Vanaparthy, Aman Bhatia
  • Patent number: 11770563
    Abstract: Several techniques for video encoding and video decoding are described. One example method includes performing a conversion between a subpicture in a video picture of a video and a bitstream of the video according to a rule. The rule specifies that multiple syntax elements are used to specify usage of a reference picture resampling tool.
    Type: Grant
    Filed: September 21, 2022
    Date of Patent: September 26, 2023
    Assignees: BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD., BYTEDANCE INC.
    Inventors: Ye-kui Wang, Li Zhang, Kai Zhang, Zhipin Deng
  • Patent number: 11765395
    Abstract: The present technology relates to an image processing device and an image processing method by which various DFs can be provided. A reduced second luminance filter having a reduced filter characteristic with respect to a second luminance filter having a higher filter strength than a first luminance filter, or a reduced first luminance filter having a reduced filter characteristic with respect to the first luminance filter is applied, as a second color-difference filter having a higher filter strength than a first color-difference filter, to a pixel of a color-difference component located around a block boundary in a decoded image. The present technology is applicable to image encoding and decoding, for example.
    Type: Grant
    Filed: October 18, 2019
    Date of Patent: September 19, 2023
    Assignee: SONY GROUP CORPORATION
    Inventor: Masaru Ikeda
  • Patent number: 11765378
    Abstract: Embodiments of this application disclose a method for obtaining a motion vector, including: determining a reference block of a to-be-processed block, wherein the reference block and the to-be-processed block have a preset temporal or spatial correlation, the reference block is obtained based on a prediction block of the reference block determined by a refined initial motion vector, the refined initial motion vector is obtained based on an initial motion vector and one or more preset motion vector offsets, and the initial motion vector is obtained based on a predicted motion vector of the reference block; and using the initial motion vector as a predicted motion vector of the to-be-processed block.
    Type: Grant
    Filed: November 13, 2020
    Date of Patent: September 19, 2023
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Xu Chen, Jicheng An, Jianhua Zheng
  • Patent number: 11758167
    Abstract: Aspects of the disclosure provide a method and an apparatus for video coding. The apparatus includes processing circuitry. The processing circuitry can determine a subblock-based merge mode used to code a current block in a current picture. The processing circuitry can partition the current block into a plurality of subblocks based on the subblock-based merge mode. The processing circuitry can determine that decoder-side motion vector refinement (DMVR) is to be applied to one of the plurality of subblocks in the current block based on a mode type of the subblock-based merge mode. The processing circuitry can encode information indicating the subblock-based merge mode in a bitstream.
    Type: Grant
    Filed: October 13, 2021
    Date of Patent: September 12, 2023
    Assignee: Tencent America LLC
    Inventors: Guichun Li, Xiang Li, Xiaozhong Xu, Shan Liu
  • Patent number: 11750829
    Abstract: A decoding device includes a transformer sets a decoded luminance component of a prediction target block to the same number of samples as that of the chrominance component corresponding to the decoded luminance component of the prediction target block and generates a luminance reference signal. A specificator specifies luminance pixels having minimum and maximum pixel values of the decoded luminance component adjacent to the decoded luminance component of the prediction target block, respectively, outputs luminance pixel values obtained from specified luminance pixels, and outputs chrominance pixel values from pigment pixels corresponding to the luminance pixels. A derivator derives a linear prediction parameter from the two pixel values and a linear prediction model. A chrominance linear predictor obtains chrominance prediction signal by applying linear prediction model based on the linear prediction parameter to the luminance reference signal.
    Type: Grant
    Filed: July 26, 2022
    Date of Patent: September 5, 2023
    Assignee: KDDI Corporation
    Inventors: Kei Kawamura, Sei Naito
  • Patent number: 11743503
    Abstract: Example techniques and devices are disclosed. An example device for coding video data includes memory configured to store the video data and one or more processors implemented in circuitry and coupled to the memory. The one or more processors are configured to determine whether an entry in a reference picture list for a current picture is equal to no reference picture. Based on the entry being equal to no reference picture, the one or more processors are configured to determine additional information associated with the entry. The one or more processors are configured to check a constraint for the entry based on the additional information and code the current picture in accordance with the constraint.
    Type: Grant
    Filed: May 13, 2021
    Date of Patent: August 29, 2023
    Assignee: QUALCOMM Incorporated
    Inventors: Vadim Seregin, Yong He, Muhammed Zeyd Coban, Adarsh Krishnan Ramasubramonian
  • Patent number: 11729391
    Abstract: A method of decoding of a picture from a video bitstream is disclosed. The video bitstream includes a slice header of a current slice and data representing the current slice. The method comprises: obtaining a parameter used to derive a number of tiles in the current slice from the slice header when a slice address of the current slice is not an address of a last tile in the picture where the current slice located; and reconstructing the current slice using the number of tiles in the current slice and the data representing the current slice.
    Type: Grant
    Filed: March 17, 2022
    Date of Patent: August 15, 2023
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Semih Esenlik, Biao Wang, Anand Meher Kotra, Elena Alexandrovna Alshina
  • Patent number: 11729408
    Abstract: The present disclosure relates to a method for deriving constructed affine merge candidates. The method includes acquiring one or more control point sets from a decoder. The decoder determines whether a reference index of each control point for the control point set index within the control point set associated with a reference index pointing into a reference picture in a first reference picture list is greater than or equal to zero and each is equal to each other. The decoder also determines whether a reference index of each control point for the control point set index within the control point set associated with a reference index pointing into a reference picture in a second reference picture list is greater than or equal to zero and each is equal to each other. The decoder determines that an affine motion model is available based on the determination result.
    Type: Grant
    Filed: June 11, 2021
    Date of Patent: August 15, 2023
    Assignee: Beijing Dajia Internet Information Technology Co., Ltd.
    Inventors: Yi-Wen Chen, Xianglin Wang
  • Patent number: RE49887
    Abstract: A method comprising: encoding a first picture on a first scalability layer and on a lowest temporal sub-layer; encoding a second picture on a second scalability layer and on the lowest temporal sub-layer, wherein the first picture and the second picture represent the same time instant, encoding one or more first syntax elements, associated with the first picture, with a value indicating that a picture type of the first picture is other than a step-wise temporal sub-layer access (STSA) picture; encoding one or more second syntax elements, associated with the second picture, with a value indicating that a picture type of the second picture is a step-wise temporal sub-layer access picture; and encoding at least a third picture on a second scalability layer and on a temporal sub-layer higher than the lowest temporal sub-layer.
    Type: Grant
    Filed: June 24, 2021
    Date of Patent: March 26, 2024
    Assignee: NOKIA TECHNOLOGIES OY
    Inventor: Miska Matias Hannuksela