Patents Assigned to Dolby Laboratories Licensing Corporation
  • Publication number: 20190088178
    Abstract: An imaging system, comprising a pixel image sensor array disposed on a substrate and comprising a plurality of pixels, a multi-stage timer coupled to said pixel image sensor array for triggering exposures of said pixels, wherein the pixels are grouped into N subsets, and the timer triggers, for each subset, a sequence of at least two exposures of different capture duration of the pixels of said subset, wherein start times of the exposure sequences of the different subsets are temporally offset, at least one ADC coupled to said pixel image sensor array, which converts said exposures of said pixels to pixel digital values, a memory coupled to said at least one ADC to store said pixel digital values, and a logic circuit coupled to said memory to determine for each pixel of the image sensor array which of the corresponding stored pixel digital values to upload to a video frame.
    Type: Application
    Filed: February 16, 2017
    Publication date: March 21, 2019
    Applicant: Dolby Laboratories Licensing Corporation
    Inventor: Gregory John WARD
  • Publication number: 20190088264
    Abstract: A sound processing system operative to measure the level of diffusivity of the sounds present in the input sound signal. The system includes a plurality of input channels for receiving audio signals from an audio scene, the audio scene comprising at least one target sound in the presence of background noise. A diffusivity measurement unit is included so as to be operably coupled to the plurality of input channels to receive the audio signals therefrom and measure a level of diffusivity of the sounds present therein. A leveler unit is operably coupled to the plurality of input channels for receiving the audio signals therefrom and for applying a gain to the audio signals to minimize variations in the audio signal levels. A controller is operably coupled to the diffusivity measurement unit and the leveler unit to control the gain applied to the audio signals by the leveler unit based on the level of diffusivity of the sounds present therein.
    Type: Application
    Filed: February 15, 2017
    Publication date: March 21, 2019
    Applicant: Dolby Laboratories Licensing Corporation
    Inventors: David GUNAWAN, Chunjian LI
  • Patent number: 10235947
    Abstract: In one embodiment, a dual modulator display systems and methods for rendering target image data upon the dual modulator display system are disclosed where the display system receives target image data, possible HDR image data and first calculates display control signals and then calculates backlight control signals from the display control signals. This order of calculating display signals and then backlight control signals later as a function of the display systems may tend to reduce clipping artifacts. In other embodiments, it is possible to split the input target HDR image data into a base layer and a detail layer, wherein the base layer is the low spatial resolution image data that may be utilized as for backlight illumination data. The detail layer is higher spatial resolution image data that may be utilized for display control data.
    Type: Grant
    Filed: February 27, 2017
    Date of Patent: March 19, 2019
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Robin Atkins, Rabab K. Ward
  • Patent number: 10237523
    Abstract: A digital PSF for use in a dual modulation display. The invention allows the use of less than optimal point spread (PSF) functions in the optics between the pre-modulator and primary modulator of a dual modulation projection system. This technique uses multiple halftones per frame in the pre-modulator synchronized with a modified bit sequence in the primary modulator to produce a compensation image that reduces the errors produced by the sub-optimal PSF. The invention includes the application to dual modulation and dual modulated 3D viewing systems.
    Type: Grant
    Filed: April 30, 2014
    Date of Patent: March 19, 2019
    Assignee: Dolby Laboratories Licensing Corporation
    Inventor: Martin J. Richards
  • Patent number: 10237549
    Abstract: A method for adaptive streaming of video data over a network is disclosed. The method includes receiving, by one or more decoders of a video streaming client, first video information of a video data stream with one or more operations of first complexity. The method further includes obtaining client-related information based at least in part on a decoding capability of the video streaming client related to decoding the first video information with the one or more operations of the first complexity by the one or more decoders. The method also includes using, by the video streaming client, the client-related information to cause the video streaming from the video streaming server to the video streaming client to be adapted to a different overall bit rate and based at least in part on the client-related information.
    Type: Grant
    Filed: June 10, 2016
    Date of Patent: March 19, 2019
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Yuwen He, Alexandros Tourapis, Peshala V. Pahalawatta, Athanasios Leontaris
  • Patent number: 10236003
    Abstract: When compressing an HOA data frame representation, a gain control (15, 151) is applied for each channel signal before it is perceptually encoded (16). The gain values are transferred in a differential manner as side information. However, for starting decoding of such streamed compressed HOA data frame representation absolute gain values are required, which should be coded with a minimum number of bits. For determining such lowest integer number (?e) of bits the HOA data frame representation (C(k)) is rendered in spatial domain to virtual loudspeaker signals lying on a unit sphere, followed by normalization of the HOA data frame representation (C(k)). Then the lowest integer number of bits is set to: (AA).
    Type: Grant
    Filed: June 22, 2015
    Date of Patent: March 19, 2019
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Sven Kordon, Alexander Krueger
  • Patent number: 10237552
    Abstract: Inter-color image prediction is based on multi-channel multiple regression (MMR) models. Image prediction is applied to the efficient coding of images and video signals of high dynamic range. MMR models may include first order parameters, second order parameters, and cross-pixel parameters. MMR models using extension parameters incorporating neighbor pixel relations are also presented. Using minimum means-square error criteria, closed form solutions for the prediction parameters are presented for a variety of MMR models.
    Type: Grant
    Filed: May 24, 2018
    Date of Patent: March 19, 2019
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Guan-Ming Su, Sheng Qu, Hubert Koepfer, Yufei Yuan, Samir Hulyalkar
  • Patent number: 10234754
    Abstract: Projector display systems comprising a light dimmer and first modulator are disclosed. The light dimmer may comprise an adjustable iris, adjustable light sources and/or LCD stack that is capable of lowering the luminance of the light source illuminated the first modulator. The first modulator may comprise a plurality of analog mirrors (e.g. MEMS array) and the second modulator may comprise a plurality of mirrors (e.g., DMD array). The display system may further comprise a controller that sends control signals to the light dimmer and first modulator. The display system may render a desired dynamic range for rendering a projected image by a combination of such control signals.
    Type: Grant
    Filed: March 27, 2018
    Date of Patent: March 19, 2019
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Douglas J. Gorny, Douglas J. Darrow, Craig Todd, Martin J. Richards
  • Publication number: 20190081719
    Abstract: Systems and methods are described for concealing packet loss in a received audio stream. Candidate frequency lines may be identified within one or two previous frames of the audio stream. For two-frame concealment, gains may be calculated for each candidate frequency line between a first frame and a second frame, and candidate frequency lines may be selected based on the calculated gains. Different techniques may be used to select the candidate frequency lines, including a full-search method and a hybrid method based on selecting peaks from a pseudospectrum. Sub-band predictors may be selected from a database of predictor candidates based on the selected candidate frequency lines. Each predictor may be a function of frequency, and the selected predictors may be arranged as a matrix. The sub-band predictors may then be applied to corresponding blocks of the second frame to obtain sub-band coefficients used to reconstruct the lost frame.
    Type: Application
    Filed: September 10, 2018
    Publication date: March 14, 2019
    Applicants: Dolby Laboratories Licensing Corporation, Dolby International AB
    Inventors: Shen HUANG, Lars VILLEMOES
  • Publication number: 20190081902
    Abstract: Disclosed is an apparatus and method operative to receive packets of media from a network including a receiver unit operative to receive the packets from the network, a jitter buffer data structure for receiving the packets in an ordered queue, the jitter buffer data structure having a tail into which the packets are input; a plurality of heads defining points in the jitter buffer data structure from which the ordered queue of packets are to be played back, the heads comprise an adjustable actual playback head coupled to an actual playback unit and at least one prototype head, each prototype head having associated therewith a target latency a processor having decision logic operable to determine a cost of achieving the associated target latency for each prototype head, wherein the decision logic compares the costs determined for each prototype head to identify a particular target latency and head location for the actual playback head of the buffer and a playback unit coupled to the processor for actual playba
    Type: Application
    Filed: March 16, 2017
    Publication date: March 14, 2019
    Applicant: Dolby Laboratories Licensing Corporation
    Inventors: Richard J. CARTWRIGHT, Hannes MUESCH
  • Publication number: 20190079302
    Abstract: A wearable device for augmented media content experiences can be formed with a mountable physical structure that has removably mountable positions and component devices that are removably mounted through the removably mountable positions. The component devices can be specifically selected based on a specific type of content consumption environment in which the wearable device is to operate. The mountable physical structure may be subject to a device washing process to which the component devices are not subject to, after the wearable device including the mountable physical structure and the component devices is used by a viewer in a content consumption session in the specific type of content consumption environment, so long as the component devices are subsequently removed from the mountable physical structure.
    Type: Application
    Filed: September 6, 2018
    Publication date: March 14, 2019
    Applicant: Dolby Laboratories Licensing Corporation
    Inventors: Ajit Ninan, Neil Mammen
  • Publication number: 20190071887
    Abstract: The present disclosure is directed to an entrance to a theater of the type normally used to show motion pictures. The motion picture theater entrance has distinctive outer walls separating a vestibule from a lobby. The vestibule has a curved image projection wall located inside said vestibule and is connected to a viewing area by a curved walkway. The entrance also may include border lighting along the upper and or lower edges of its walls.
    Type: Application
    Filed: March 2, 2018
    Publication date: March 7, 2019
    Applicant: Dolby Laboratories Licensing Corporation
    Inventors: Wilhelm OEHL, David HERMAN, Vincent VORON, Donald BURLOCK, Pascal SIJEN, Christopher Roy KUKSHTEL
  • Patent number: 10225676
    Abstract: Embodiments are directed to a method of rendering adaptive audio by receiving input audio comprising channel-based audio, audio objects, and dynamic objects, wherein the dynamic objects are classified as sets of low-priority dynamic objects and high-priority dynamic objects, rendering the channel-based audio, the audio objects, and the low-priority dynamic objects in a first rendering processor of an audio processing system, and rendering the high-priority dynamic objects in a second rendering processor of the audio processing system. The rendered audio is then subject to virtualization and post-processing steps for playback through soundbars and other similar limited height capable speakers.
    Type: Grant
    Filed: February 4, 2016
    Date of Patent: March 5, 2019
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Joshua Brandon Lando, Freddie Sanchez, Alan J Seefeldt
  • Patent number: 10224040
    Abstract: The present application relates to packet loss concealment apparatus and method, and audio processing system. According to an embodiment, the packet loss concealment apparatus is provided for concealing packet losses in a stream of audio packets, each audio packet comprising at least one audio frame in transmission format comprising at least one monaural component and at least one spatial component. The packet loss concealment apparatus may comprises a first concealment unit for creating the at least one monaural component for a lost frame in a lost packet and a second concealment unit for creating the at least one spatial component for the lost frame. According to the embodiment, spatial artifacts such as incorrect angle and diffuseness may be avoided as far as possible in PLC for multi-channel spatial or sound field encoded audio signals.
    Type: Grant
    Filed: July 2, 2014
    Date of Patent: March 5, 2019
    Assignees: Dolby Laboratories Licensing Corporation, Dolby International AB
    Inventors: Shen Huang, Xuejing Sun, Heiko Purnhagen
  • Patent number: 10225558
    Abstract: Systems and methods for 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: December 5, 2014
    Date of Patent: March 5, 2019
    Assignee: Dolby Laboratories Licensing Corporation
    Inventor: Michael Horowitz
  • Patent number: 10224044
    Abstract: When decompressing an HOA data frame representation, a gain control (15, 151) is applied for each channel signal before it is perceptually encoded (16). The gain values are transferred in a differential manner as side information. However, for starting decoding of such streamed compressed HOA data frame representation absolute gain values are required, which should be coded with a minimum number of bits. For determining such lowest integer number (?e) of bits the HOA data frame representation (C(k)) is rendered in spatial domain to virtual loudspeaker signals lying on a unit sphere, followed by normalization of the HOA data frame representation (C(k). Then the lowest integer number of bits is set to ?e=? log2(? log2(?{square root over (KMAX)}·O)?+1)?.
    Type: Grant
    Filed: February 7, 2018
    Date of Patent: March 5, 2019
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Alexander Krueger, Sven Kordon
  • Patent number: 10224046
    Abstract: A method, an apparatus, logic (e.g., executable instructions encoded in a non-transitory computer-readable medium to carry out a method), and a non-transitory computer-readable medium configured with such instructions. The method is to generate and spatially render spatial comfort noise at a receiving endpoint of a conference system, such that the comfort noise has target spectral characteristics typical of comfort noise, and at least one spatial property that at least substantially matches at least one target spatial property. On version includes receiving one or more or more audio signals from other endpoints, combining the received audio signals with the spatial comfort noise signals, and rendering the combination of the received audio signals and the spatial comfort noise signals to a set of output signals for loudspeakers, such that the spatial comfort noise signals are continually in the output signal sin addition to output from the received audio signals.
    Type: Grant
    Filed: March 4, 2014
    Date of Patent: March 5, 2019
    Assignees: Dolby Laboratories Licensing Corporation, Dolby International AB
    Inventors: Glenn N. Dickins, Xuejing Sun, Yen-Liang Shue, Heiko Purnhagen
  • Patent number: 10223774
    Abstract: A processor for approximating a reshaping function using a multi-segment polynomial receives an input reshaping function. Given a number of target segments (N) and an initial maximum fitting error, in a first pass, it applies a first smoothing filter to the input reshaping function to generate a first smoothed reshaping function. Next, it generates a first multi-segment polynomial approximation of the input reshaping function based on one or more multi-segment polynomial approximation algorithms, the smoothed reshaping function, the number of target segments, and the initial maximum fitting error. The same process may be repeated in two or more similar passes that may include in each pass: reconstructing the reshaping function from the polynomial approximation of the previous pass, smoothing and segmenting the reconstructed reshaping function, and generating an updated multi-segment polynomial approximation according to an updated maximum fitting error.
    Type: Grant
    Filed: July 12, 2017
    Date of Patent: March 5, 2019
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Harshad Kadu, Subhayan Mukherjee, Guan-Ming Su
  • Patent number: 10225574
    Abstract: Coding techniques for a video image compression system involve improving an image quality of a sequence of two or more bi-directionally predicted intermediate frames, where each of the frames includes multiple pixels. One method involves determining a brightness value of at least one pixel of each bi-directionally predicted intermediate frame in the sequence as an equal average of brightness values of pixels in non-bidirectionally predicted frames bracketing the sequence of bi-directionally predicted intermediate frames. The brightness values of the pixels in at least one of the non-bidirectionally predicted frames is converted from a non-linear representation.
    Type: Grant
    Filed: September 8, 2017
    Date of Patent: March 5, 2019
    Assignee: Dolby Laboratories Licensing Corporation
    Inventor: Gary A. Demos
  • Patent number: RE47277
    Abstract: Embodiments of the present invention comprise systems and methods for processing of data related to video wherein reduced bit depth intermediate calculations are enabled.
    Type: Grant
    Filed: January 6, 2017
    Date of Patent: March 5, 2019
    Assignee: Dolby Laboratories Licensing Corporation
    Inventor: Louis J. Kerofsky