Dolby Laboratories Patent Applications

TILING IN VIDEO ENCODING AND DECODING

Granted: September 7, 2017
Application Number: 20170257638
Implementations are provided that relate, for example, to view tiling in video encoding and decoding. A particular method includes accessing a video picture that includes multiple pictures combined into a single picture (826), accessing information indicating how the multiple pictures in the accessed video picture are combined (806, 808, 822), decoding the video picture to provide a decoded representation of at least one of the multiple pictures (824, 826), and providing the accessed…

TRANSMISSION-AGNOSTIC PRESENTATION-BASED PROGRAM LOUDNESS

Granted: August 31, 2017
Application Number: 20170249951
This disclosure falls into the field of audio coding, in particular it is related to the field of providing a framework for providing loudness consistency among differing audio output signals. In particular, the disclosure relates to methods, computer program products and apparatus for encoding and decoding of audio data bitstreams in order to attain a desired loudness level of an output audio signal.

ENCODING AND DECODING PERCEPTUALLY-QUANTIZED VIDEO CONTENT

Granted: August 31, 2017
Application Number: 20170251211
Compared to traditional gamma-coded video, perceptually quantized video provides greater flexibility for the transmission and display management of high-dynamic range video, but it does not compresses as efficiently using existing standard codecs. Techniques are described to improve the coding efficiency of perceptually coded video by applying a color cross-talk transformation after the RGB/XYZ to LMS transformation. Such a transform increases luma and chroma correlation for color…

LOUDSPEAKER WITH NARROW DISPERSION

Granted: August 31, 2017
Application Number: 20170251296
A column loudspeaker with a line of low-frequency drivers has a center coaxial driver with a low frequency driver and a high frequency drive. The low frequency drivers are delayed and gain adjusted such that they exhibit constant directivity in the axis of the line. The high frequency driver has the same directivity as the line of low frequency drivers. A crossover separates the audio signal into high and low frequency signals with low frequency signals sent to the low frequency drivers,…

OVERHEAD SPEAKER SYSTEM

Granted: August 31, 2017
Application Number: 20170251298
There is provided a sound system comprising: a first reflector arranged overhead and to reflect sound into a listening environment, a sound emitting device comprising a sound source and a second reflector, the sound source being configured to direct a sound beam with a first beam angle into the second reflector, the sound emitting device being any of a horn or parabolic loudspeaker. The second reflector is shaped to reflect the sound beam with a second beam angle towards the first…

Insertion of Sound Objects Into a Downmixed Audio Signal

Granted: August 31, 2017
Application Number: 20170251321
A method for inserting a first audio signal into a bitstream which comprises a downmix signal and associated bitstream metadata is described. The downmix signal and associated bitstream metadata are indicative of an audio program comprising a plurality of spatially diverse audio signals. The downmix signal comprises at least one audio channel and the bitstream metadata comprise upmix metadata for reproducing the plurality of spatially diverse audio signals from the at least one channel.…

Techniques for Dual Modulation with Light Conversion

Granted: August 24, 2017
Application Number: 20170242301
Techniques for driving a dual modulation display include generating backlight drive signals to drive individually-controllable illumination sources. The illumination sources emit first light onto a light conversion layer. The light conversion layer converts the first light, such as blue or ultraviolet light, into second light, such as white light. The light conversion layer can include quantum dot materials. Liquid crystal display (LCD) modulation drive signals are generated to determine…

Audio Processing Systems and Methods

Granted: August 24, 2017
Application Number: 20170243596
Embodiments are directed processing adaptive audio content by determining an audio type as one of channel-based audio and object-based audio for each audio segment of an adaptive audio bitstream, tagging the each audio segment with a metadata definition indicating the audio type of the corresponding audio segment, processing audio segments tagged as channel-based audio in a channel audio renderer component, and processing audio segments tagged as object-based audio in an object audio…

CONTENT MAPPING USING EXTENDED COLOR RANGE

Granted: August 24, 2017
Application Number: 20170244983
In high-dynamic range (HDR) coding, content mapping translates an HDR signal to a signal of lower dynamic range. Coding and prediction in layered coding of HDR signals is improved if content mapping utilizes signal color ranges beyond those defined by a traditional electro-optical Transfer function (EOTF) or its inverse (IEOTF or OETF). Extended EOTF and IEOTF functions are derived based on their mirror points. Examples of extended EOTFs are given for ITU BT. 1886 and SMPTE ST 2084.

ORIENTATION-AWARE SURROUND SOUND PLAYBACK

Granted: August 24, 2017
Application Number: 20170245055
Example embodiments disclosed herein relate to orientation-aware surround sound playback. A method for processing audio on an electronic device that includes a plurality of loudspeakers is disclosed, the loudspeakers arranged in more than one dimension of the electronic device. The method includes, responsive to receipt of a plurality of received audio streams, generating a rendering component associated with the plurality of received audio streams, determining an orientation dependent…

METHOD AND APPARATUS FOR GENERATING FROM A COEFFICIENT DOMAIN REPRESENTATION OF HOA SIGNALS A MIXED SPATIAL/COEFFICIENT DOMAIN REPRESENTATION OF SAID HOA SIGNALS

Granted: August 24, 2017
Application Number: 20170245084
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. A vector of coefficient domain signals is separated into a vector of coefficient domain signals having a constant number of HOA coefficients and a vector of coefficient domain signals having a variable number…

Tiled Assemblies for a High Dynamic Range Display Panel

Granted: August 17, 2017
Application Number: 20170235041
Techniques are provided for a high dynamic range panel that includes an array of light sources (202,203) illuminating a corresponding array of light guides (204, 206). A light source (202) of the array illuminates a first light guide (204). The light source directly underlies, such as in a cavity (208), a second light guide (206) that is adjacent to the first light guide. The light source (202) does not extend below a bottom side (214) of either the first light guide or the second light…

RENDERING OF AUDIO OBJECTS WITH APPARENT SIZE TO ARBITRARY LOUDSPEAKER LAYOUTS

Granted: August 17, 2017
Application Number: 20170238116
Multiple virtual source locations may be defined for a volume within which audio objects can move. A set-up process for rendering audio data may involve receiving reproduction speaker location data and pre-computing gain values for each of the virtual sources according to the reproduction speaker location data and each virtual source location. The gain values may be stored and used during “run time,” during which audio reproduction data are rendered for the speakers of the…

Generating Metadata for Audio Object

Granted: August 17, 2017
Application Number: 20170238117
Example embodiments disclosed herein relate to audio object processing. A method for processing audio content, which includes at least one audio object of a multi-channel format, is disclosed. The method includes generating metadata associated with the audio object, the metadata including at least one of an estimated trajectory of the audio object and an estimated perceptual size of the audio object, the perceptual size being a perceived area of a phantom of the audio object produced by…

METHOD TO IMPROVE THE CONTRAST RATIO IN A THEATRE

Granted: August 10, 2017
Application Number: 20170225093
A light absorbing configuration for a venue in which images are projected to a display screen located at or near a front of the venue, may comprise a light absorbing structure deployed on one or more front portions on one or more of a ceiling, side walls, or a floor of the venue. The light absorbing structure comprises grooves formed at least in part by a first type of light reflective surfaces configured to receive a portion of light rays directly reflected off the display screen and a…

LASER-MACHINED OPTICAL COMPONENTS AND RELATED METHODS FOR PICK AND BOND ASSEMBLY

Granted: August 3, 2017
Application Number: 20170219743
Methods and systems for optical assemblies are disclosed. Optical assemblies can comprise optical elements that may not require active alignment and allow for reduced performance variations. To allow for passive assembly with a machine like a bonder tool, assembly components can have bonding pads and/or fiducial markers that are fabricated using laser micromachining techniques.

DECODING OF ENCODED AUDIO BITSTREAM WITH METADATA CONTAINER LOCATED IN RESERVED DATA SPACE

Granted: August 3, 2017
Application Number: 20170221496
Apparatus and methods for generating an encoded audio bitstream, including by including program loudness metadata and audio data in the bitstream, and optionally also program boundary metadata in at least one segment (e.g., frame) of the bitstream. Other aspects are apparatus and methods for decoding such a bitstream, e.g., including by performing adaptive loudness processing of the audio data of an audio program indicated by the bitstream, or authentication and/or validation of metadata…

AUDIO SIGNAL LOUDNESS CONTROL

Granted: August 3, 2017
Application Number: 20170222611
Example embodiments disclosed herein relate to audio signal loudness control. A method for controlling loudness of an audio signal is disclosed. The method includes responsive to determining presence of a noise signal, deriving a target partial loudness adjustment based, at least in part, on at least one of a first factor related to the noise signal and a second factor related to the audio signal. The method further includes determining a target partial loudness of the audio signal…

User Experience Oriented Audio Signal Processing

Granted: August 3, 2017
Application Number: 20170223456
Example embodiments disclosed herein relate to user experience oriented audio signal processing. There is provided a method for user experience oriented audio signal processing. The method includes obtaining a first audio signal from an audio sensor of an electronic device; computing, based on the first audio signal, a compensation factor for an acoustic path from the electronic device to a listener and applying the compensation factor to a second audio signal outputted from the…

Processing Spatially Diffuse or Large Audio Objects

Granted: August 3, 2017
Application Number: 20170223476
Diffuse or spatially large audio objects may be identified for special processing. A decorrelation process may be performed on audio signals corresponding to the large audio objects to produce decorrelated large audio object audio signals. These decorrelated large audio object audio signals may be associated with object locations, which may be stationary or time-varying locations. For example, the decorrelated large audio object audio signals may be rendered to virtual or actual speaker…