Patents by Inventor Rickard Samuelsson

Rickard Samuelsson 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: 20190297346
    Abstract: An encoded representation of a picture of a video stream is decoded by retrieving buffer description from the encoded representation. The buffer description information is used to determine at least one picture identifier identifying a respective reference picture as decoding reference for the picture. A decoded picture buffer is updated based on the determined picture identifier. The encoded representation of the picture itself comprises the information needed by a decoder to identify the reference pictures required to decode the encoded representation.
    Type: Application
    Filed: June 13, 2019
    Publication date: September 26, 2019
    Inventors: Jonatan Samuelsson, Rickard Sjöberg
  • Patent number: 10404987
    Abstract: A multi-layer or multi-view video is encoded by encoding one of a picture in a first layer or view and a picture in a second layer or view coinciding at a switching point defining a switch between the first layer or view and the second layer or view. The other of the picture in the first layer or view and the picture in the second layer or view coinciding at the switching point is encoded as a skip picture. The embodiments thereby reduce complexity of encoding and decoding multi-layer or multi-view video having a switching point and reduce the number of bits required for representing encoded pictures coinciding at the switching point.
    Type: Grant
    Filed: August 6, 2014
    Date of Patent: September 3, 2019
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Jonatan Samuelsson, Jack Enhorn, Rickard Sjöberg
  • Publication number: 20190268614
    Abstract: An example method includes receiving a video bitstream with a high fidelity input format and side information related to the video bitstream. The side information includes a video bitstream representing the original video source with a low fidelity input format, coding parameters optimized based on knowledge of the original video source, transform coefficients, indicative of a residual between the original video source and a decoded version of the high fidelity format. The method further includes decoding the side information to generate transcoding guiding information, estimating a representation of video bitstream with a low fidelity output format, based on the received bit stream and the generated transcoding guiding information, improving the estimated low-fidelity representation by adding the transform coefficients of the side information to transform coefficients generated from the estimated low-fidelity representation, and encoding the improved estimated representation of the low-fidelity bitstream.
    Type: Application
    Filed: May 10, 2019
    Publication date: August 29, 2019
    Inventors: Kenneth Andersson, Thomas Rusert, Jonatan Samuelsson, Rickard Sjöberg
  • Publication number: 20190238851
    Abstract: A length indicator associated with an encoded representation of a slice is parsed. The length indicator is indicative of a length of an extension field present in a slice header of the encoded representation. A decoder can then determine to ignore, during decoding of the encoded representation, any value of the extension field in the slice header where these values are identified based on the length indicator. As a consequence, an extension field can be added to slice headers and still enable legacy decoders to correctly decode the encoded representations.
    Type: Application
    Filed: April 10, 2019
    Publication date: August 1, 2019
    Inventors: Jonatan Samuelsson, Rickard Sjöberg
  • Patent number: 10368088
    Abstract: An encoded representation of a picture of a video stream is decoded by retrieving buffer description from the encoded representation. The buffer description information is used to determine at least one picture identifier identifying a respective reference picture as decoding reference for the picture. A decoded picture buffer is updated based on the determined picture identifier. The encoded representation of the picture itself comprises the information needed by a decoder to identify the reference pictures required to decode the encoded representation.
    Type: Grant
    Filed: July 30, 2018
    Date of Patent: July 30, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Jonatan Samuelsson, Rickard Sjöberg
  • Publication number: 20190230371
    Abstract: A POC recalculation value is retrieved by a decoder from an encoded representation of a RAP picture in a base layer of a video stream comprising pictures in multiple layers. POC values of reference pictures in a DPB of the decoder are recalculated using the POC recalculation value. By signaling the POC recalculation value in the RAP picture, which enables the decoder to correctly handle video streams with non-aligned RAP pictures.
    Type: Application
    Filed: March 29, 2019
    Publication date: July 25, 2019
    Inventors: Rickard SJÖBERG, Jonatan SAMUELSSON, Ruoyang YU
  • Publication number: 20190206360
    Abstract: A processing of pixels comprises checking whether a color component of a pixel in a color space resulting in a smallest error between at least one color component in another color space determined based on the color component and at least one original color component of the pixel in the another color space causes any color channel of the pixel to fall outside of an allowed range. A value of the color component is obtained using a first function/LUT if the color component resulting in the smallest error does not cause any color channel of the pixel to fall outside of said allowed range. However, a value of the color component is obtained using a second, different function/LUT if the color component resulting in the smallest error causes any color channel of the pixel to fall outside of the allowed range.
    Type: Application
    Filed: November 18, 2016
    Publication date: July 4, 2019
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Jacob STRÖM, Kenneth ANDERSSON, Kristofer DOVSTAM, Jonatan SAMUELSSON, Rickard SJÖBERG
  • Patent number: 10306245
    Abstract: A POC recalculation value is retrieved by a decoder from an encoded representation of a RAP picture in a base layer of a video stream comprising pictures in multiple layers. POC values of reference pictures in a DPB of the decoder are recalculated using the POC recalculation value. By signaling the POC recalculation value in the RAP picture, which enables the decoder to correctly handle video streams with non-aligned RAP pictures.
    Type: Grant
    Filed: June 25, 2014
    Date of Patent: May 28, 2019
    Assignee: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)
    Inventors: Rickard Sjöberg, Jonatan Samuelsson, Ruoyang Yu
  • Patent number: 10306231
    Abstract: A length indicator associated with an encoded representation of a slice is parsed. The length indicator is indicative of a length of an extension field present in a slice header of the encoded representation. A decoder can then determine to ignore, during decoding of the encoded representation, any value of the extension field in the slice header where these values are identified based on the length indicator. As a consequence, an extension field can be added to slice headers and still enable legacy decoders to correctly decode the encoded representations.
    Type: Grant
    Filed: April 20, 2018
    Date of Patent: May 28, 2019
    Assignee: Velos Media, LLC
    Inventors: Jonatan Samuelsson, Rickard Sjöberg
  • Publication number: 20190149831
    Abstract: A method to be performed by a receiving apparatus for decoding an encoded bitstream representing a sequence of pictures of a video stream is provided. In the method, capabilities relating to level of decoding parallelism for the decoder are identified, a parameter indicative of the decoder's capabilities relating to level of decoding parallelism is kept, and for a set of levels of decoding parallelism, information relating to HEVC profile and HEVC level that the decoder is capable of decoding is kept. A method for encoding a bitstream representing a sequence of pictures of a video stream is also provided. In the method, a parameter is received from a transmitting apparatus that should decode the encoded bitstream.
    Type: Application
    Filed: November 16, 2018
    Publication date: May 16, 2019
    Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Jonatan SAMUELSSON, Bo BURMAN, Rickard SJÖBERG, Magnus WESTERLUND
  • Patent number: 9797312
    Abstract: A supporting structure for a gas turbine engine includes an inner ring, an outer ring, and a plurality of circumferentially spaced, load carrying radial elements connecting the inner and outer rings. The radial elements have an airfoil shape with a leading edge directed towards the inlet side of the supporting structure, a trailing edge directed towards the outlet side of the supporting structure, and two opposite sides connecting the leading edge and the trailing edge. At least one of the radial elements includes a gas passage arrangement configured to lead a separate bleeding gas flow from the supporting structure. The gas passage arrangement includes a radially extending gas channel arranged inside the radial element and at least one opening in communication with the gas channel. The at least one opening is arranged at one of the two opposite sides of the radial element.
    Type: Grant
    Filed: May 2, 2012
    Date of Patent: October 24, 2017
    Assignee: GKN Aerospace Sweden AB
    Inventors: Goran Johnsson, Rickard Samuelsson
  • Patent number: 9228446
    Abstract: A gas turbine engine component includes a ring element and a plurality of circumferentially spaced load carrying vanes extending in a radial direction of the ring element. At least one of the vanes is made of a composite material. The at least one composite vane is fastened to the ring element. The component further includes first and second wall portions that are fixed in relation to the ring element and arranged on opposite sides of the composite vane. At least a first hole extends through the first wall portion, the composite vane and the second wall portion. The first hole is adapted to receive a first insertion member. The component is arranged such as to, with regard to the first hole, provide a tight fit for the first insertion member in the first wall portion as well as in the composite vane and to provide a loose fit with a radial play in the second wall portion.
    Type: Grant
    Filed: October 27, 2009
    Date of Patent: January 5, 2016
    Assignee: GKN Aerospace Sweden AB
    Inventors: Rickard Samuelsson, Robert Reimers
  • Publication number: 20150176494
    Abstract: A supporting structure for a gas turbine engine comprises an inner ring, an outer ring, a plurality of circumferentially spaced, load carrying radial elements connecting the inner and outer rings, said radial elements being configured to transfer loads between the inner ring and the outer ring, wherein a gas channel for a primary axial gas flow is defined between the inner and outer rings, an inlet side for primary gas flow entrance, and an outlet side for primary gas outflow, wherein the radial elements have an airfoil shape with a leading edge directed towards the inlet side of the supporting structure, a trailing edge directed towards the outlet side of the supporting structure, and two opposite sides connecting the leading edge and the trailing edge, wherein a locus of points midway between the two opposite sides forms a mean camber line of each radial element, wherein at least one of the radial elements comprises a gas passage arrangement configured to lead a separate bleeding gas flow from the supportin
    Type: Application
    Filed: May 2, 2012
    Publication date: June 25, 2015
    Inventors: Goran Johnsson, Rickard Samuelsson
  • Patent number: 8757919
    Abstract: A component includes a first member, a second member and a device for fastening the first member to the second member. A first hole extends through a portion of the first member and a second hole extends through a portion of the second member. The first member and the second member are positioned such that the first hole and the second hole coincide. The fastening device includes an elongated fastening element arranged in the coinciding holes and a bushing arrangement arranged around the fastening element and adapted to establish a load transmission path between the first member and the second member. A first part of the bushing arrangement is arranged such that an inner surface thereof is positioned at a distance from an exterior surface of the fastening element for establishing a first load transmission path via the bushing arrangement and bypassing the fastening element in a first load condition.
    Type: Grant
    Filed: August 29, 2008
    Date of Patent: June 24, 2014
    Assignee: Volvo Aero Corporation
    Inventors: Rickard Samuelsson, Niklas Jansson
  • Patent number: 8459942
    Abstract: A gas turbine engine component is provided including at least one ring element, and a plurality of circumferentially spaced load carrying vanes extending in a radial direction of the ring element. The load carrying vanes have an internal structure with an anisotropic load carrying property, and the internal structure is configured so that a main load carrying direction is in parallel with the extension direction of the load carrying vane. The component includes a stiffening structure bridging the distance between at least two adjacent load carrying vanes in the circumferential direction of the ring element, and the at least two adjacent load carrying vanes are attached to the stiffening structure.
    Type: Grant
    Filed: March 28, 2008
    Date of Patent: June 11, 2013
    Assignee: Volvo Aero Corporation
    Inventors: Anders Sjunnesson, Niklas Jansson, Robert Reimers, Rickard Samuelsson
  • Publication number: 20120213633
    Abstract: A gas turbine engine component includes a ring element and a plurality of circumferentially spaced load carrying vanes extending in a radial direction of the ring element. At least one of the vanes is made of a composite material. The at least one composite vane is fastened to the ring element. The component further includes first and second wall portions that are fixed in relation to the ring element and arranged on opposite sides of the composite vane. At least a first hole extends through the first wall portion, the composite vane and the second wall portion. The first hole is adapted to receive a first insertion member. The component is arranged such as to, with regard to the first hole, provide a tight fit for the first insertion member in the first wall portion as well as in the composite vane and to provide a loose fit with a radial play in the second wall portion.
    Type: Application
    Filed: October 27, 2009
    Publication date: August 23, 2012
    Applicant: Volvo Aero Corporation
    Inventors: Rickard Samuelsson, Robert Reimers
  • Publication number: 20120213634
    Abstract: In a gas turbine engine at least one vanes is made of a composite material and an end part of the vane is fastened to the ring element by at least a first bracket member arranged in a corner region formed by the vane and a ring element. The first bracket member is fastened to the vane by a first fastening device arranged in association with a first hole extending through the vane. The first bracket member is fastened to the ring element by a second fastening device arranged in association with a second hole extending through the ring element. An opening is arranged in the ring element. A second bracket member at least partly has an angular cross section. The second, angled bracket member is arranged through the opening such as to be positioned on an opposite side of both the vane and the ring element in relation to the first bracket member. The second, angled bracket member is fastened to the first bracket member by the first and second fastening devices.
    Type: Application
    Filed: October 27, 2009
    Publication date: August 23, 2012
    Applicant: VOLVO AERO CORPORATION
    Inventors: Rickard Samuelsson, Robert Reimers
  • Publication number: 20110299917
    Abstract: A component includes a first member, a second member and a device for fastening the first member to the second member. A first hole extends through a portion of the first member and a second hole extends through a portion of the second member. The first member and the second member are positioned such that the first hole and the second hole coincide. The fastening device includes an elongated fastening element arranged in the coinciding holes and a bushing arrangement arranged around the fastening element and adapted to establish a load transmission path between the first member and the second member. A first part of the bushing arrangement is arranged such that an inner surface thereof is positioned at a distance from an exterior surface of the fastening element for establishing a first load transmission path via the bushing arrangement and bypassing the fastening element in a first load condition.
    Type: Application
    Filed: August 29, 2008
    Publication date: December 8, 2011
    Applicant: VOLVO AERO CORPORATION
    Inventors: Rickard Samuelsson, Niklas Jansson
  • Publication number: 20100111685
    Abstract: A gas turbine engine component is provided including at least one ring element, and a plurality of circumferentially spaced load carrying vanes extending in a radial direction of the ring element. The load carrying vanes have an internal structure with an anisotropic load carrying property, and the internal structure is configured so that a main load carrying direction is in parallel with the extension direction of the load carrying vane. The component includes a stiffening structure bridging the distance between at least two adjacent load carrying vanes in the circumferential direction of the ring element, and the at least two adjacent load carrying vanes are attached to the stiffening structure.
    Type: Application
    Filed: March 28, 2008
    Publication date: May 6, 2010
    Applicant: Volvo Aero Corporation
    Inventors: Anders Sjunnesson, Niklas Jansson, Robert Reimers, Rickard Samuelsson