Patents Assigned to Dolby Laboratories Licensing Corporation
  • Patent number: 11967330
    Abstract: Described herein is a method for generating a modified bitstream on a source device, wherein the method includes the steps of: a) receiving, by a receiver, a bitstream including coded media data; b) generating, by an embedder, payload of additional media data and embedding the payload in the bitstream for obtaining, as an output from the embedder, a modified bitstream including the coded media data and the payload of the additional media data; and c) outputting the modified bitstream to a sink device. Described is further a method for processing said modified bitstream on a sink device. Described are moreover a respective source device and sink device as well as a system of a source device and a sink device and respective computer program products.
    Type: Grant
    Filed: August 13, 2020
    Date of Patent: April 23, 2024
    Assignees: DOLBY INTERNATIONAL AB, DOLBY LABORATORIES LICENSING CORPORATION
    Inventors: Christof Fersch, Daniel Fischer, Leon Terentiv, Gregory John McGarry
  • Patent number: 11968268
    Abstract: An audio session management method may involve: determining, by an audio session manager, one or more first media engine capabilities of a first media engine of a first smart audio device, the first media engine being configured for managing one or more audio media streams received by the first smart audio device and for performing first smart audio device signal processing for the one or more audio media streams according to a first media engine sample clock; receiving, by the audio session manager and via a first application communication link, first application control signals from the first application; and controlling the first smart audio device according to the first media engine capabilities, by the audio session manager, via first audio session management control signals transmitted to the first smart audio device via a first smart audio device communication link and without reference to the first media engine sample clock.
    Type: Grant
    Filed: July 28, 2020
    Date of Patent: April 23, 2024
    Assignees: Dolby Laboratories Licensing Corporation, Dolby International AB
    Inventors: Glenn N. Dickins, Mark R. P. Thomas, Alan J. Seefeldt, Joshua B. Lando, Daniel Arteaga, Carlos Medaglia Dyonisio, David Gunawan, Richard J. Cartwright, Christopher Graham Hines
  • Publication number: 20240127831
    Abstract: Conventional audio compression technologies perform a standardized signal transformation, independent of the type of the content. Multi-channel signals are decomposed into their signal components, subsequently quantized and encoded. This is disadvantageous due to lack of knowledge on the characteristics of scene composition, especially for e.g. multi-channel audio or Higher-Order Ambisonics (HOA) content. A method for decoding an encoded bitstream of multi-channel audio data and associated metadata is provided, including transforming the first Ambisonics format of the multi-channel audio data to a second Ambisonics format representation of the multi-channel audio data, wherein the transforming maps the first Ambisonics format of the multi-channel audio data into the second Ambisonics format representation of the multi-channel audio data.
    Type: Application
    Filed: October 18, 2023
    Publication date: April 18, 2024
    Applicant: Dolby Laboratories Licensing Corporation
    Inventors: Oliver WUEBBOLT, Peter JAX, Johannes BOEHM
  • Patent number: 11962760
    Abstract: A set of tensor-product B-Spline (TPB) basis functions is determined. A set of selected TPB prediction parameters to be used with the set of TPB basis functions for generating predicted image data in mapped images from source image data in source images of a source color grade is generated. The set of selected TPB prediction parameters is generated by minimizing differences between the predicted image data in the mapped images and reference image data in reference images of a reference color grade. The reference images correspond to the source images and depict same visual content as depicted by the source images. The set of selected TPB prediction parameters is encoded in a video signal as a part of image metadata along with the source image data in the source images. The mapped images are caused to be reconstructed and rendered with a recipient device of the video signal.
    Type: Grant
    Filed: September 29, 2020
    Date of Patent: April 16, 2024
    Assignee: DOLBY LABORATORIES LICENSING CORPORATION
    Inventors: Guan-Ming Su, Harshad Kadu, Qing Song, Neeraj J. Gadgil
  • Patent number: 11962279
    Abstract: In some embodiments, a method for processing an audio signal in an audio processing apparatus is disclosed. The method includes receiving an audio signal and a parameter, the parameter indicating a location of an auditory event boundary. An audio portion between consecutive auditory event boundaries constitutes an auditory event. The method further includes applying a modification to the audio signal based in part on an occurrence of the auditory event. The parameter may be generated by monitoring a characteristic of the audio signal and identifying a change in the characteristic.
    Type: Grant
    Filed: June 1, 2023
    Date of Patent: April 16, 2024
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Brett G. Crockett, Alan J. Seefeldt
  • Patent number: 11962819
    Abstract: First foviated images are streamed to a streaming client. The first foviated images with first image metadata sets are used to generate first display mapped images for rendering to a viewer at first time points. View direction data is collected and used to determine a second view direction of the viewer at a second time point. A second foviated image and a second image metadata set are generated from a second HDR source image in reference to the second view direction of the viewer and used to generate a second display mapped image for rendering to the viewer at the second time point. The second image metadata set comprises a display management metadata portions for adapting a focal-vision and peripheral-vision image portions to corresponding image portions in the second display mapped image. The focal-vision display management metadata portion is generated with a predicted light adaptation level of the viewer for the second time point.
    Type: Grant
    Filed: April 6, 2022
    Date of Patent: April 16, 2024
    Assignee: Dolby Laboratories Licensing Corporation
    Inventor: Ajit Ninan
  • Patent number: 11962997
    Abstract: Embodiments are described for an adaptive audio system that processes audio data comprising a number of independent monophonic audio streams. One or more of the streams has associated with it metadata that specifies whether the stream is a channel-based or object-based stream. Channel-based streams have rendering information encoded by means of channel name; and the object-based streams have location information encoded through location expressions encoded in the associated metadata. A codec packages the independent audio streams into a single serial bitstream that contains all of the audio data. This configuration allows for the sound to be rendered according to an allocentric frame of reference, in which the rendering location of a sound is based on the characteristics of the playback environment (e.g., room size, shape, etc.) to correspond to the mixer's intent.
    Type: Grant
    Filed: August 8, 2022
    Date of Patent: April 16, 2024
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Charles Q. Robinson, Nicolas R. Tsingos, Christophe Chabanne
  • Publication number: 20240121424
    Abstract: Methods and systems for canvas size scalability across the same or different bitstream layers of a video coded bitstream are described. Offset parameters for a conformance window, a reference region of interest (ROI) in a reference layer, and a current ROI in a current layer are received. The width and height of a current ROI and a reference ROI are computed based on the offset parameters and they are used to generate a width and height scaling factor to be used by a reference picture resampling unit to generate an output picture based on the current ROI and the reference ROI.
    Type: Application
    Filed: December 18, 2023
    Publication date: April 11, 2024
    Applicant: Dolby Laboratories Licensing Corporation
    Inventors: Taoran Lu, Fangjun Pu, Peng Yin, Sean Thomas McCarthy, Tao Chen
  • Patent number: 11956075
    Abstract: A control unit of a multipath data transportation system that optimizes the load of the multiple communication paths of this system when the system transmits a data segment over these paths in parallel with forward error correction. The control unit determines an optimized number of packets to send over each path based on a prediction of quality for each path. The transmitted packets include systematic packets and coded packets.
    Type: Grant
    Filed: May 2, 2022
    Date of Patent: April 9, 2024
    Assignee: DOLBY LABORATORIES LICENSING CORPORATION
    Inventors: Mingchao Yu, Mark Craig Reed
  • Publication number: 20240114127
    Abstract: Methods, systems, and devices implement intra-prediction for hexagonally-sampled compression and decompression of videos and images having a regular grid of hexagonally-shaped pixels. For encoding, a prediction unit (PU) shape is selected at a sequence level from the group consisting of parallelogram, zigzag-square, hexagonal super-pixel, a rectangular zigzag and an arrow, and the hexagonally-sampled image is divided into regions based on the PU shape. For each region: a prediction mode and a PU size are determined; reference pixels are determined for each predicted pixel in the PU shape based on the prediction mode; a weighted factor is determined for each of the reference pixels based on a distance between the reference pixel and the predicted pixel; and a predicted value of each of the predicted pixels in the PU shape is determined using the corresponding reference pixels and the weighted factors.
    Type: Application
    Filed: February 10, 2022
    Publication date: April 4, 2024
    Applicant: Dolby Laboratories Licensing Corporation
    Inventors: Zhaobin ZHANG, Neeraj J. GADGIL, Guan-Ming SU
  • Publication number: 20240114308
    Abstract: Some methods involve receiving, by a control system that is configured for implementing a plurality of renderers, audio data and listening configuration data for a plurality of listening configurations, each listening configuration of the plurality of listening configurations corresponding to a listening position and a listening orientation in an audio environment, and rendering, by each renderer and according to the listening configuration data, the received audio data to obtain a set of renderer-specific loudspeaker feed signals for a corresponding listening configuration. Each renderer may be configured to render the audio data for a different listening configuration. Some such methods may involve decomposing each set of renderer-specific loudspeaker feed signals into a renderer-specific set of frequency bands and combining the renderer-specific frequency bands of each renderer to produce an output set of loudspeaker feed signals.
    Type: Application
    Filed: December 2, 2021
    Publication date: April 4, 2024
    Applicant: Dolby Laboratories Licensing Corporation
    Inventors: Alan J. SEEFELDT, C. Phillip BROWN
  • Publication number: 20240114153
    Abstract: A first image and a second image of different dynamic ranges are derived from the same source image. Based on a chroma sampling format of the first image, it is determined whether edge preserving filtering is to be used to generate chroma upsampled image data in a reconstructed image. If so, image metadata for performing the edge preserving filtering is generated. The first image, the second image and the image metadata are encoded into an image data container to enable a recipient device to generate the reconstructed image.
    Type: Application
    Filed: September 1, 2023
    Publication date: April 4, 2024
    Applicant: Dolby Laboratories Licensing Corporation
    Inventors: Anustup Kumar Atanu CHOUDHURY, Guan-Ming SU
  • Publication number: 20240114306
    Abstract: An multi-input, multi-output audio process is implemented as a linear system for use in an audio filterbank to convert a set of frequency-domain input audio signals into a set of frequency-domain output audio signals. A transfer function from one input to one output is defined as a frequency dependent gain function. In some implementations, the transfer function includes a direct component that is substantially defined as a frequency dependent gain, and one or more decorrelated components that have frequency-varying group phase response. The transfer function is formed from a set of sub-band functions, with each sub-band function being formed from a set of corresponding component transfer functions including direct component and one or more decorrelated components.
    Type: Application
    Filed: September 2, 2020
    Publication date: April 4, 2024
    Applicant: Dolby Laboratories Licensing Corporation
    Inventor: David S. MCGRATH
  • Publication number: 20240114307
    Abstract: There is provided encoding and decoding methods for representing spatial audio that is a combination of directional sound and diffuse sound. An exemplary encoding method includes inter alia creating a single- or multi-channel downmix audio signal by downmixing input audio signals from a plurality of microphones in an audio capture unit capturing the spatial audio; determining first metadata parameters associated with the downmix audio signal, wherein the first metadata parameters are indicative of one or more of: a relative time delay value, a gain value, and a phase value associated with each input audio signal; and combining the created downmix audio signal and the first metadata parameters into a representation of the spatial audio.
    Type: Application
    Filed: September 12, 2023
    Publication date: April 4, 2024
    Applicants: DOLBY INTERNATIONAL AB, DOLBY LABORATORIES LICENSING CORPORATION
    Inventor: Stefan BRUHN
  • Publication number: 20240114309
    Abstract: Some examples involve rendering received audio data by determining a first relative activation of a set of loudspeakers in an environment according to a first rendering configuration corresponding to a first set of speaker activations, receiving a first rendering transition indication indicating a transition from the first rendering configuration to a second rendering configuration and determining a second set of speaker activations corresponding to a simplified version of the second rendering configuration. Some examples involve performing a first transition from the first set of speaker activations to the second set of speaker activations, determining a third set of speaker activations corresponding to a complete version of the second rendering configuration and performing a second transition to the third set of speaker activations without requiring completion of the first transition.
    Type: Application
    Filed: December 2, 2021
    Publication date: April 4, 2024
    Applicant: DOLBY LABORATORIES LICENSING CORPORATION
    Inventors: Joshua B. LANDO, Alan J. SEEFELDT
  • Patent number: 11948592
    Abstract: Many portable playback devices cannot decode and playback encoded audio content having wide bandwidth and wide dynamic range with consistent loudness and intelligibility unless the encoded audio content has been prepared specially for these devices. This problem can be overcome by including with the encoded content some metadata that specifies a suitable dynamic range compression profile by either absolute values or differential values relative to another known compression profile. A playback device may also adaptively apply gain and limiting to the playback audio. Implementations in encoders, in transcoders and in decoders are disclosed.
    Type: Grant
    Filed: April 20, 2023
    Date of Patent: April 2, 2024
    Assignees: Dolby Laboratories Licensing Corporation, DOLBY INTERNATIONAL AB
    Inventors: Jeffrey Riedmiller, Harald Mundt, Michael Schug, Martin Wolters
  • Patent number: 11950078
    Abstract: Methods for dialogue enhancing audio content, comprising providing a first audio signal presentation of the audio components, providing a second audio signal presentation, receiving a set of dialogue estimation parameters configured to enable estimation of dialogue components from the first audio signal presentation, applying said set of dialogue estimation parameters to said first audio signal presentation, to form a dialogue presentation of the dialogue components; and combining the dialogue presentation with said second audio signal presentation to form a dialogue enhanced audio signal presentation for reproduction on the second audio reproduction system, wherein at least one of said first and second audio signal presentation is a binaural audio signal presentation.
    Type: Grant
    Filed: April 28, 2023
    Date of Patent: April 2, 2024
    Assignees: Dolby Laboratories Licensing Corporation, DOLBY INTERNATIONAL AB
    Inventors: Leif Jonas Samuelsson, Dirk Jeroen Breebaart, David Matthew Cooper, Jeroen Koppens
  • Patent number: 11948583
    Abstract: Soundfield signals such as e.g. Ambisonics carry a representation of a desired sound field. The Ambisonics format is based on spherical harmonic decomposition of the soundfield, and Higher Order Ambisonics (HOA) uses spherical harmonics of at least 2nd order. However, commonly used loudspeaker setups are irregular and lead to problems in decoder design. A method for improved decoding an audio soundfield representation for audio playback comprises calculating a panning function (W) using a geometrical method based on the positions of a plurality of loudspeakers and a plurality of source directions, calculating a mode matrix (?) from the loudspeaker positions, calculating a pseudo-inverse mode matrix (?+) and decoding the audio soundfield representation. The decoding is based on a decode matrix (D) that is obtained from the panning function (W) and the pseudo-inverse mode matrix (?+).
    Type: Grant
    Filed: December 22, 2021
    Date of Patent: April 2, 2024
    Assignee: DOLBY LABORATORIES LICENSING CORPORATION
    Inventors: Johann-Markus Batke, Florian Keiler, Johannes Boehm
  • Patent number: 11949878
    Abstract: Described is picture segmentation through columns and slices in video encoding and decoding. A video picture is divided into a plurality of columns, each column covering only a part of the video picture in a horizontal dimension. All coded tree blocks (“CTBs”) belonging to a slice may belong to one or more columns. The columns may be used to break the same or different prediction or in-loop filtering mechanisms of the video coding, and the CTB scan order used for encoding and/or decoding may be local to a column. Column widths may be indicated in a parameter set and/or may be adjusted at the slice level. At the decoder, column width may be parsed from the bitstream, and slice decoding may occur in one or more columns.
    Type: Grant
    Filed: January 13, 2023
    Date of Patent: April 2, 2024
    Assignee: DOLBY LABORATORIES LICENSING CORPORATION
    Inventor: Michael Horowitz
  • Patent number: 11950082
    Abstract: An apparatus and method of loudspeaker equalization. The method combines default tunings (generated based on a default listening environment) and room tunings (generated based on an end user listening environment) to result in combined tunings that account for differences between the end user listening environment and the default listening environment.
    Type: Grant
    Filed: August 14, 2020
    Date of Patent: April 2, 2024
    Assignee: DOLBY LABORATORIES LICENSING CORPORATION
    Inventor: Andrew P. Reilly