Patents by Inventor Jacob Ström

Jacob Ström 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).

  • Publication number: 20230024020
    Abstract: A method for decoding an image is provided. The method includes obtaining a first sample value associated with the image.
    Type: Application
    Filed: November 16, 2020
    Publication date: January 26, 2023
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Jacob STRÖM, Zhi ZHANG, Kenneth ANDERSSON
  • Publication number: 20230023387
    Abstract: There is provided a method for encoding or decoding an image. The method comprises obtaining a first luma sample value, L1, associated with the image. The method comprises obtaining a second luma sample value, L2, associated with the image. The method further comprises obtaining a first luma delta value, ?L1, wherein ?L1=L2?L1. The method comprises obtaining a first product, P1, using ?L1 and a first coefficient value, C1, wherein P1=(C1)(?L1). The method comprises calculating a first residual correction value, ?I1 using P1 and a set of other products. The method comprises filtering an unfiltered chroma value, RC, associated with the image using the first residual correction value, ?I1, thereby producing a filtered chroma value RFC associated with the image.
    Type: Application
    Filed: December 16, 2020
    Publication date: January 26, 2023
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Jacob STRÖM, Zhi ZHANG, Kenneth ANDERSSON
  • Patent number: 11558613
    Abstract: There are provided mechanisms for methods and apparatuses for transform selection in encoding and decoding of video blocks.
    Type: Grant
    Filed: June 28, 2021
    Date of Patent: January 17, 2023
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Christopher Hollmann, Davood Saffar, Jacob Ström, Per Wennersten
  • Publication number: 20220377378
    Abstract: A method, decoder, and apparatus are provided. Responsive to a current block being a MIP predicted block, it is determined whether it has one or multiple transform blocks. A MIP weight matrix to be used to decode the current block is determined based on a MIP prediction mode. Responsive to the MIP predicted block having one transform block, the MIP predicted block is derived based on the MIP weight matrix and previously decoded elements in the bitstream. Responsive to the MIP predicted block having multiple transform blocks: deriving a first MIP predicted block is derived based on the MIP weight matrix and previously decoded elements in the bitstream and remaining MIP predicted blocks are derived based further on decoded elements in at least one decoded transform block of the current block. The MIP predicted block(s) are output for subsequent processing.
    Type: Application
    Filed: September 17, 2020
    Publication date: November 24, 2022
    Inventors: Zhi ZHANG, Kenneth ANDERSSON, Davood SAFFAR, Rickard SJÖBERG, Jacob STRÖM, Ruoyang YU
  • Patent number: 11490080
    Abstract: In one aspect there is disclosed a method of applying deblocking on implicit vertical TU boundaries when the CU width is larger than the maximum TU width and applying deblocking on implicit horizontal TU boundaries when the CU height is larger than the maximum TU height. Some exemplary embodiments include HEVC deblocking and deblocking using longer filters.
    Type: Grant
    Filed: May 14, 2019
    Date of Patent: November 1, 2022
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Kenneth Andersson, Rickard Sjöberg, Jacob Ström, Zhi Zhang
  • Publication number: 20220337877
    Abstract: A method, decoder apparatus, and computer programs are provided. A bit stream having a video block encoded with a multiple transform selection (MTS) index is received. The MTS index is parsed to determine a value of it. Responsive to the MTS index value being a predetermined value (or one of a predetermined set of indices), a LFNST index is parsed from the bit stream to determine a value of it, the value providing an indication whether a LFNST transform set is to be used in decoding the video block. Responsive to the MTS index value not being the predetermined value (or one of the set of indices), the value of the LFNST index is set to a default value indicating no LFNST transform is to be used in the decoding. The video block is decoded based on the values of the MTS index and the LFNST index.
    Type: Application
    Filed: June 15, 2020
    Publication date: October 20, 2022
    Inventors: Christopher HOLLMANN, Davood SAFFAR, Per WENNERSTEN, Jacob STRÖM
  • Publication number: 20220337936
    Abstract: A method and an apparatus for enabling adaptive audio signal alteration are described. When an input audio signal is received, a determination of whether the user of an audio device hears the input audio signal is performed based upon brain activity of the user. A determination of whether the user is distracted by the audio signal is performed based upon sensor measurements indicating a physical state of the user. In response to determining that the user hears the input audio signal and that the input audio signal causes the user to be distracted, a determination of configuration parameter(s) is performed. An alteration of audio signal(s) is caused based upon the configuration parameter(s) to obtain modified version(s) of the audio signal(s) that are intended to address the distraction caused by the input audio signal, and output audio signals are output, where the output audio signals include the modified versions.
    Type: Application
    Filed: June 29, 2022
    Publication date: October 20, 2022
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Matthew John LAWRENSON, Jan Jasper VAN DEN BERG, Jacob STRÖM, Lars ANDERSSON
  • Publication number: 20220329791
    Abstract: In an image processing device (i.e. encoder or decoder), the number of loop filter stages is lowered by combining bilateral loop filtering (or Hadamard loop filtering) with either sample Adaptive Offset Filtering (SAO) or Adaptive Loop Filtering (ALF). This avoids the implementation problems associated with too many loop filter stages and provides approximately the same compression efficiency gain as having separate loop filter stages.
    Type: Application
    Filed: June 24, 2020
    Publication date: October 13, 2022
    Inventors: Jacob Ström, Per Wennersten
  • Publication number: 20220312007
    Abstract: Methods and apparatuses for applying a deblocking to a coding unit in video pictures. In one aspect, the deblocking is applied to sub-block boundaries in the coding unit and to implicit transform unit boundaries in the coding unit.
    Type: Application
    Filed: June 9, 2022
    Publication date: September 29, 2022
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Kenneth ANDERSSON, Rickard SJÖBERG, Jacob STRÖM, Zhi ZHANG
  • Publication number: 20220303574
    Abstract: The present embodiments introduce a new type of random access point in video bitstreams that can be used for random access operations but can be represented in encoded form at a lower bit-cost as compared to IRAP pictures. The random access point is a dependent random access point (DRAP) picture that is encoded and decoded using an IRAP picture and/or a previous, according to a decoding order, DRAP picture as sole reference picture(s) for the DRAP picture. The DRAP picture is encoded as a trailing picture that may be used for reference and constitutes a random access point in a video bitstream.
    Type: Application
    Filed: June 6, 2022
    Publication date: September 22, 2022
    Inventors: Martin PETTERSSON, Jonatan SAMUELSSON, Rickard SJÖBERG, Jacob STRÖM, Ruoyang YU
  • Publication number: 20220264148
    Abstract: Intra-prediction with modified clipping is presented herein for encoding and/or decoding video and/or still images. Input boundary samples for a current block are used to generate a reduced prediction matrix of prediction samples. Clipping is performed on each of the prediction samples in the reduced prediction matrix that are out of range to generate a clipped reduced prediction matrix. The clipped reduced prediction matrix is then used to generate the complete prediction block corresponding to the current block. The prediction block is then used to obtain a residual block. By clipping the prediction sample(s) in the reduced prediction matrix, the solution presented herein reduces latency and complexity.
    Type: Application
    Filed: June 12, 2020
    Publication date: August 18, 2022
    Inventors: Zhi Zhang, Ruoyang Yu, Kenneth Andersson, Per Wennersten, Jacob Ström, Rickard Sjöberg
  • Publication number: 20220256163
    Abstract: A method for encoding or decoding an image of a video sequence is provided. The method comprises obtaining a set of sample values associated with the image. The method comprises determining a relative location of the current sample value with respect to a virtual boundary. The virtual boundary is defined with respect to a block boundary between the first block of sample values and a second block of sample values. The virtual boundary is parallel with the block boundary and separated from the block boundary by at least one row or column of sample values included in the first block of sample values. The method comprises a filter strength value based on the determined relative location of the current sample value with respect to the virtual boundary. The method comprises filtering the current sample value based on the selected filter strength value.
    Type: Application
    Filed: April 20, 2022
    Publication date: August 11, 2022
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Kenneth ANDERSSON, Jacob Ström, Zhi Zhang, Jack Enhorn
  • Patent number: 11412321
    Abstract: A method and an apparatus for enabling adaptive audio signal alteration are described. When an input audio signal is received, a determination of whether the user of an audio device hears the input audio signal is performed based upon brain activity of the user. A determination of whether the user is distracted by the audio signal is performed based upon sensor measurements indicating a physical state of the user. In response to determining that the user hears the input audio signal and that the input audio signal causes the user to be distracted, a determination of configuration parameter(s) is performed. An alteration of audio signal(s) is caused based upon the configuration parameter(s) to obtain modified version(s) of the audio signal(s) that are intended to address the distraction caused by the input audio signal, and output audio signals are output, where the output audio signals include the modified versions.
    Type: Grant
    Filed: December 4, 2020
    Date of Patent: August 9, 2022
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Matthew John Lawrenson, Jan Jasper Van Den Berg, Jacob Ström, Lars Andersson
  • Publication number: 20220239919
    Abstract: A prediction unit (60) for an encoder (24) or decoder (44) implements matrix based intra prediction Input boundary samples for a current block are downsampled to obtain reduced boundary samples for matrix multiplication and/or linear interpolation, or both. In one embodiment, downsampling is performed in a manner that aligns the reduced boundary samples with an output of a matrix multiplication unit of the prediction unit. In other embodiments, downsampling is performed without averaging. The embodiments reduce the complexity of the prediction unit and the latency of the encoder (24) or decoder (44).
    Type: Application
    Filed: June 12, 2020
    Publication date: July 28, 2022
    Inventors: Zhi Zhang, Ruoyang Yu, Kenneth Andersson, Per Wennersten, Jacob Ström, Rickard Sjöberg
  • Patent number: 11397799
    Abstract: A computing device (300) for authenticating a user (110), such as a mobile phone, a smartphone, a tablet, or the like, is provided. The computing device is operative to acquire a representation of a melody generated by the user, and authenticate the user in response to determining that the acquired representation of the user-generated melody and a representation of a reference melody fulfil a similarity condition. The user-generated melody may either be vocalized or subvocalized. If the melody is vocalized, the representation is derived from audio data captured by a microphone (102). If the melody is subvocalized, the representation is derived from nerve signals captured by sensors attached to the throat (111) of the user, or from a video sequence acquired from a camera (103), the video sequence capturing one or more body parts (111-115) of the user subvocalizing the melody, by magnifying motions of the one or more body parts which are correlated with the subvocalized melody.
    Type: Grant
    Filed: October 3, 2016
    Date of Patent: July 26, 2022
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Matthew John Lawrenson, Lars Andersson, Till Burkert, Jacob Ström, Jan Jasper Van Den Berg
  • Publication number: 20220226995
    Abstract: A multipurpose robot arm having a controller configured to control the motion hereof during an operation process according to a plurality of basic operation commands Wherein the robot controller is configured to control the multipurpose robot arm in a standard mode of operation according to a first subset of the basic operation commands and in an application specific operation mode during part of the robot arm operation process according to a second subset of the basic operation commands. Wherein basic operation commands of the second subset are at least partly comprised by the first subset and wherein at least one of the operation parameters of the second subset is limited by a application operation value. Wherein the application operation value is defined by a desired property of the operation of the multipurpose robot arm in the application specific operation mode.
    Type: Application
    Filed: May 28, 2020
    Publication date: July 21, 2022
    Inventors: Anders Billesø BECK, Jacob Gregers HANSEN, William LEDDA, Theis STRØM-HANSEN
  • Patent number: 11395000
    Abstract: The present embodiments introduce a new type of random access point in video bitstreams that can be used for random access operations but can be represented in encoded form at a lower bit-cost as compared to IRAP pictures. The random access point is a dependent random access point (DRAP) picture that is encoded and decoded using an IRAP picture and/or a previous, according to a decoding order, DRAP picture as sole reference picture(s) for the DRAP picture. The DRAP picture is encoded as a trailing picture that may be used for reference and constitutes a random access point in a video bitstream.
    Type: Grant
    Filed: December 22, 2020
    Date of Patent: July 19, 2022
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Martin Pettersson, Jonatan Samuelsson, Rickard Sjöberg, Jacob Ström, Ruoyang Yu
  • Patent number: 11388400
    Abstract: Methods and apparatuses for applying a deblocking to a coding unit in video pictures. In one aspect, the deblocking is applied to sub-block boundaries in the coding unit and to implicit transform unit boundaries in the coding unit.
    Type: Grant
    Filed: June 20, 2019
    Date of Patent: July 12, 2022
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Kenneth Andersson, Rickard Sjöberg, Jacob Ström, Zhi Zhang
  • Publication number: 20220182632
    Abstract: A MIP method (700) for predicting samples of a current block. The method includes storing (s702) a set of MIP weight matrices. The method also includes determining (s704) the width, W, and the height, H, of the current block. The method further includes setting (s706) a mipSizeId variable to 1 as a result of: i) determining that W=4 storing a set of MIP weight matrices and H=16 or ii) determining that W=16 and H=4. The method further includes storing (s708) a value, predModeIntra, that specifies a MIP prediction mode for the current block. The method further includes determining (s710), based on predModeIntra and the value of the mipSizeId variable, a modeId value. And the method further includes selecting (s712), from the set of MIP weight matrices, a MIP weight matrix to be used for the current block, wherein the selection is based on modeId and the value of the mipSizeId variable.
    Type: Application
    Filed: July 22, 2020
    Publication date: June 9, 2022
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Zhi ZHANG, Ruoyang YU, Rickard SJÖBERG, Kenneth ANDERSSON, Jacob STRÖM, Davood SAFFAR
  • Patent number: 11330278
    Abstract: A processing for a first pixel in a picture comprises setting upper and/or lower limits of a first color component of the first pixel in a first color space to a respective fixed value if a maximum and/or minimum value of the first color component in the first color space results in a color component in a second color space that is below a first value of the color component in the second color space and above a second value of the color component in the second color space. A filtered value is obtained of the first color component and which is equal to or larger than the lower limit and equal to or lower than the upper limit. The processing results in filtered values that are cheaper to encode but that are visibly undistinguishable from the original colors of the pixels.
    Type: Grant
    Filed: December 18, 2017
    Date of Patent: May 10, 2022
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Jacob Ström, Kenneth Andersson, Per Wennersten