Patents Assigned to Dolby Laboratories Licensing Corporation
  • Publication number: 20220244553
    Abstract: A projection system and method therefor comprises a first light source configured to emit a first-eye light, wherein the first-eye light includes a first set of wavelengths; a second light source configured to emit a second-eye light, wherein the second-eye light includes a second set of wavelengths; a first projector including first projection optics configured to receive a first input light; and an optical switch configured to be switched between an a first mode and a second mode, wherein the optical switch is configured to, in the first mode, combine the first-eye light and the second-eye light into a combined light and direct the combined light to the first projection optics as the first input light.
    Type: Application
    Filed: May 8, 2020
    Publication date: August 4, 2022
    Applicant: Dolby Laboratories Licensing Corporation
    Inventors: John Frederick ARNTSEN, Barret LIPPEY
  • Patent number: 11404071
    Abstract: An audio processing unit (APU) is disclosed. The APU includes a buffer memory configured to store at least one frame of an encoded audio bitstream, where the encoded audio bitstream includes audio data and a metadata container. The metadata container includes a header and one or more metadata payloads after the header. The one or more metadata payloads include dynamic range compression (DRC) metadata, and the DRC metadata is or includes profile metadata indicative of whether the DRC metadata includes dynamic range compression (DRC) control values for use in performing dynamic range compression in accordance with at least one compression profile on audio content indicated by at least one block of the audio data.
    Type: Grant
    Filed: March 16, 2020
    Date of Patent: August 2, 2022
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Jeffrey Riedmiller, Michael Ward
  • Publication number: 20220239874
    Abstract: A display for displaying image data includes defining virtual color gamuts based on a plurality of primary display colors associated with a light source. At least one of the virtual color gamuts is defined to approximate an established color gamut. Intensity values associated with the virtual color gamuts are generated based on received video data, and the intensity values associated with the virtual color gamuts are used to generate drive values for the primary colors of the light source. A display using one or more virtual color gamuts is also disclosed.
    Type: Application
    Filed: April 5, 2022
    Publication date: July 28, 2022
    Applicant: Dolby Laboratories Licensing Corporation
    Inventors: Trevor DAVIES, Martin J. RICHARDS, Ashley PENNA
  • Publication number: 20220239872
    Abstract: A non-transitory computer-readable-medium storing instructions that, when executed by a processor of an image projector, cause the image projector to perform operations including receiving a first image data, determining a thermal state of the image projector based at least in part on a content of the first image data, generating a second image data based on the first image data and the thermal state; emitting light in response to the second image data, and projecting an image onto a screen based on the emitted light, wherein the first image data corresponds to a frame of a video, and the second image data corresponds to the frame of the video.
    Type: Application
    Filed: April 11, 2022
    Publication date: July 28, 2022
    Applicant: DOLBY LABORATORIES LICENSING CORPORATION
    Inventors: Christopher John ORLICK, Jerome D. SHIELDS
  • Publication number: 20220230644
    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 d) 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: Application
    Filed: August 13, 2020
    Publication date: July 21, 2022
    Applicants: Dolby Laboratories Licensing Corporation, Dolby International AB
    Inventors: Christof FERSCH, Daniel FISCHER, Leon TERENTIV, Gregory John MCGARRY
  • Publication number: 20220231669
    Abstract: A filterbank, suitable for modifying audio signals with dynamic gains in each band, is constructed so that the perceived latency is small, while a larger group delay is applied at low frequencies to enable higher frequency resolution in the lower frequency bands. The higher group delay at low frequencies is achieved by inserting an all-pass filter into the reconstructed filter response.
    Type: Application
    Filed: June 25, 2020
    Publication date: July 21, 2022
    Applicant: Dolby Laboratories Licensing Corporation
    Inventor: David S. MCGRATH
  • Patent number: 11393113
    Abstract: Bordering pixels delineating a texture hole region in an image are identified. Depth values of the bordering pixels are recorded. The depth values are automatically clustered into two depth value clusters with a depth value threshold separating the two depth value clusters. A subset of bordering background pixels is identified in the bordering pixels as those with depth values in one of the two depth value clusters that is declared as a background depth value cluster. The subset of bordering background pixels is used to predict texture hole pixel values in the texture hole region based on multiple candidate prediction directions. Quality indicator values are computed for the multiple candidate prediction directions and used to select a specific candidate prediction direction for filling in final texture hole pixel values in the texture hole region of the image.
    Type: Grant
    Filed: February 25, 2020
    Date of Patent: July 19, 2022
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Wenhui Jia, Haricharan Lakshman, Ajit Ninan
  • Patent number: 11395009
    Abstract: Given a sequence of images in a first codeword representation, methods, processes, and systems are presented for image reshaping using rate distortion optimization, wherein reshaping allows the images to be coded in a second codeword representation which allows more efficient compression than using the first codeword representation. Syntax methods for signaling reshaping parameters are also presented.
    Type: Grant
    Filed: February 13, 2019
    Date of Patent: July 19, 2022
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Peng Yin, Fangjun Pu, Taoran Lu, Tao Chen, Walter J. Husak, Sean Thomas McCarthy
  • Patent number: 11395084
    Abstract: A method for compressing a HOA signal being an input HOA representation with input time frames (C(k)) of HOA coefficient sequences comprises spatial HOA encoding of the input time frames and subsequent perceptual encoding and source encoding. Each input time frame is decomposed (802) into a frame of predominant sound signals (XPS(k?1)) and a frame of an ambient HOA component ({tilde over (C)}AMB(k?1)). The ambient HOA component ({tilde over (C)}AMB(k?1)) comprises, in a layered mode, first HOA coefficient sequences of the input HOA representation (cn(k?1)) in lower positions and second HOA coefficient sequences (cAMB,n(k?1)) in remaining higher positions. The second HOA coefficient sequences are part of an HOA representation of a residual between the input HOA representation and the HOA representation of the predominant sound signals.
    Type: Grant
    Filed: September 3, 2020
    Date of Patent: July 19, 2022
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Sven Kordon, Alexander Krueger, Oliver Wuebbolt
  • Patent number: 11395033
    Abstract: A video content controller includes a memory and a microprocessor. The memory is configured to store non-transitory computer-readable instructions and video data representing a temporally-varying scene having a plurality of scene-regions. The microprocessor adapted to execute the instructions to (i) receive a current stream-segment of a video stream corresponding to a first scene-region of the plurality of scene-regions during a current playback-time interval, (ii) download, to a memory, a first video segment of a tagged scene-region within the first scene-region, (iii) receive a first display-region signal indicating at least one of a selection and a feature of the first scene-region, (iv) combine the current stream-segment and the first video segment as a video signal, and (vi) transmit, in response to the first display-region signal, the video signal to a display device.
    Type: Grant
    Filed: December 28, 2020
    Date of Patent: July 19, 2022
    Assignee: Dolby Laboratories Licensing Corporation
    Inventor: Timo Kunkel
  • Patent number: 11395085
    Abstract: The present invention is directed to methods and apparatus for translating a first plurality of audio input channels to a second plurality of audio output channels. This includes determining that there is pair-wise coding among any of the first plurality of audio input channels, determining an input/output-mapping matrix for mapping at least a first set of the first plurality of audio input channels to at least a second set of the second plurality of audio output channels; and deriving the second plurality of audio output channels based on first plurality of audio input channels, the input/output-mapping matrix and the determined pair-wise coding. The first plurality of audio input channels represent the same soundfield represented by the second plurality of audio output channels.
    Type: Grant
    Filed: December 29, 2020
    Date of Patent: July 19, 2022
    Assignee: Dolby Laboratories Licensing Corporation
    Inventor: Mark F. Davis
  • Publication number: 20220225044
    Abstract: Higher Order Ambisonics represents three-dimensional sound independent of a specific loudspeaker set-up. However, transmission of an HOA representation results in a very high bit rate. Therefore, compression with a fixed number of channels is used, in which directional and ambient signal components are processed differently. The ambient HOA component is represented by a minimum number of HOA coefficient sequences. The remaining channels contain either directional signals or additional coefficient sequences of the ambient HOA component, depending on what will result in optimum perceptual quality. This processing can change on a frame-by-frame basis.
    Type: Application
    Filed: March 21, 2022
    Publication date: July 14, 2022
    Applicant: DOLBY LABORATORIES LICENSING CORPORATION
    Inventors: Sven KORDON, Alexander KRUEGER
  • Publication number: 20220224946
    Abstract: Given a sequence of images in a first codeword representation, methods, processes, and systems are presented for image reshaping using rate distortion optimization, wherein reshaping allows the images to be coded in a second codeword representation which allows more efficient compression than using the first codeword representation. Syntax methods for signaling reshaping parameters are also presented.
    Type: Application
    Filed: March 29, 2022
    Publication date: July 14, 2022
    Applicant: DOLBY LABORATORIES LICENSING CORPORATION
    Inventors: Peng Yin, Fangjun Pu, Taoran Lu, Tao Chen, Walter J. Husak, Sean Thomas McCarthy
  • Publication number: 20220225045
    Abstract: There are two representations for Higher Order Ambisonics denoted HOA: spatial domain and coefficient domain. The invention generates from a coefficient domain representation a mixed spatial/coefficient domain representation, wherein the number of said HOA signals can be variable. An aspect of the invention further relates to methods and apparatus decoding multiplexed and perceptually encoded HOA signals, including transforming a vector of PCM encoded spatial domain signals of the HOA representation to a corresponding vector of coefficient domain signals by multiplying the vector of PCM encoded spatial domain signals with a transform matrix and de-normalizing the vector of PCM encoded and normalized coefficient domain signals, wherein said de-normalizing comprises.
    Type: Application
    Filed: April 1, 2022
    Publication date: July 14, 2022
    Applicant: Dolby Laboratories Licensing Corporation
    Inventors: Sven KORDON, Alexander KRUEGER
  • Publication number: 20220225022
    Abstract: Disclosed are methods and systems which convert a multi-microphone input signal to a multichannel output signal making use of a time- and frequency-varying matrix. For each time and frequency tile, the matrix is derived as a function of a dominant direction of arrival and a steering strength parameter. Likewise, the dominant direction and steering strength parameter are derived from characteristics of the multi-microphone signals, where those characteristics include values representative of the inter-channel amplitude and group-delay differences.
    Type: Application
    Filed: January 24, 2022
    Publication date: July 14, 2022
    Applicant: DOLBY LABORATORIES LICENSING CORPORATION
    Inventor: David S. MCGRATH
  • Publication number: 20220223144
    Abstract: Described herein is a method for Convolutional Neural Network (CNN) based speech source separation, wherein the method includes the steps of: (a) providing multiple frames of a time-frequency transform of an original noisy speech signal; (b) inputting the time-frequency transform of said multiple frames into an aggregated multi-scale CNN having a plurality of parallel convolution paths; (c) extracting and outputting, by each parallel convolution path, features from the input time-frequency transform of said multiple frames; (d) obtaining an aggregated output of the outputs of the parallel convolution paths; and (e) generating an output mask for extracting speech from the original noisy speech signal based on the aggregated output. Described herein are further an apparatus for CNN based speech source separation as well as a respective computer program product comprising a computer-readable storage medium with instructions adapted to carry out said method when executed by a device having processing capability.
    Type: Application
    Filed: May 13, 2020
    Publication date: July 14, 2022
    Applicant: Dolby Laboratories Licensing Corporation
    Inventors: Jundai SUN, Zhiwei SHUANG, Lie LU, Shaofan YANG, Jia DAI
  • Publication number: 20220225050
    Abstract: Images are acquired through image sensors operating in conjunction with a media consumption system. The acquired images are used to determine a user's movement in a plurality of degrees of freedom. Sound images depicted in spatial audio rendered by audio speakers operating in conjunction with the media consumption system are adapted based at least in part on the user's movement in the plurality of degrees of freedom.
    Type: Application
    Filed: January 6, 2022
    Publication date: July 14, 2022
    Applicant: Dolby Laboratories Licensing Corporation
    Inventors: Ajit NINAN, William Anthony ROZZI
  • Patent number: 11388406
    Abstract: Given a representation of a forward reshaping function in an M-piecewise linear representation (M-PWL), methods, processes, and systems are presented for generating the forward reshaping function in an N-PWL representation (where N<M), by properly adjusting the first and last segments, and for generating a decoded bitstream using the adjusted N-PWL reshaping representation. Syntax methods for signaling reshaping parameters are also presented.
    Type: Grant
    Filed: May 18, 2020
    Date of Patent: July 12, 2022
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Taoran Lu, Peng Yin
  • Patent number: 11386913
    Abstract: Methods (700, 800, 900), systems (200, 300, 400, 500, 600) and computer program products are provided. Location metadata (620) associated with an audio object is received (801). The location metadata defines a position of the audio object in an audio scene. It is estimated (630, 802), based on the location metadata, whether the audio object includes dialog. A value representative of a result of the estimation is assigned (803) to an object type parameter (231). In some example embodiments, audio objects are selected (661, 662, 804) based on values of their respective of object type parameters. In some example embodiments, at least one of the selected audio objects is submitted to dialog enhancement (690, 807).
    Type: Grant
    Filed: July 26, 2018
    Date of Patent: July 12, 2022
    Assignee: Dolby Laboratories Licensing Corporation
    Inventor: Mark William Gerrard
  • Patent number: D958109
    Type: Grant
    Filed: June 15, 2021
    Date of Patent: July 19, 2022
    Assignee: DOLBY LABORATORIES LICENSING CORPORATION
    Inventors: Grayson H. Byrd, Cody Michael Proksa, Lucas E. Saule, Peter Michaelian, Brian Edward Renz, John Carson Stewart, Vincent Voron