SYSTEMS AND METHODS FOR LOCAL DIMMING IN MULTI-MODULATION DISPLAYS
Granted: June 15, 2023
Application Number:
20230188686
Dual and multi-modulator projector display systems and techniques are disclosed. In one embodiment, a projector display system comprises a light source; a controller, a first modulator, receiving light from the light source and rendering a halftone image of said the input image; a blurring optical system that blurs said halftone image with a Point Spread Function (PSF); and a second modulator receiving the blurred halftone image and rendering a pulse width modulated image which may be…
LOUDNESS ADJUSTMENT FOR DOWNMIXED AUDIO CONTENT
Granted: June 15, 2023
Application Number:
20230188918
Audio content coded for a reference speaker configuration is downmixed to downmix audio content coded for a specific speaker configuration. One or more gain adjustments are performed on individual portions of the downmix audio content coded for the specific speaker configuration. Loudness measurements are then performed on the individual portions of the downmix audio content. An audio signal that comprises the audio content coded for the reference speaker configuration and downmix…
METHOD AND APPARATUS FOR COMPRESSING AND DECOMPRESSING A HIGHER ORDER AMBISONICS REPRESENTATION FOR A SOUND FIELD
Granted: June 8, 2023
Application Number:
20230179940
The invention improves HOA sound field representation compression and decompression. A decoder decodes compressed dominant directional signals and compressed residual component signals so as to provide decompressed dominant directional signals and decompressed time domain signals representing a residual HOA component in a spatial domain. A re-correlator re-correlates the decompressed time domain signals to obtain a corresponding reduced-order residual HOA component. A processor…
METHODS AND APPARATUS FOR DECODING ENCODED HOA SIGNALS
Granted: June 8, 2023
Application Number:
20230179936
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…
METHOD AND APPARATUS FOR SCREEN RELATED ADAPTATION OF A HIGHER-ORDER AMBISONICS AUDIO SIGNAL
Granted: June 1, 2023
Application Number:
20230171558
A method for generating loudspeaker signals associated with a target screen size is disclosed. The method includes receiving a bit stream containing encoded higher order ambisonics signals, the encoded higher order ambisonics signals describing a sound field associated with a production screen size. The method further includes decoding the encoded higher order ambisonics signals to obtain a first set of decoded higher order ambisonics signals representing dominant components of the sound…
ADJUSTABLE TRADE-OFF BETWEEN QUALITY AND COMPUTATION COMPLEXITY IN VIDEO CODECS
Granted: June 1, 2023
Application Number:
20230171436
A backward reshaping mapping table is initially generated as an inverse of a forward reshaping mapping table. The backward reshaping mapping table is updated by replacing the content-mapped luminance codewords with forward reshaped luminance codewords generated by applying a luminance forward mapping to the sampled luminance codewords. The luminance forward mapping is constructed from the forward reshaping mapping table. The backward reshaping mapping table and the luminance forward…
SOURCE COLOR VOLUME INFORMATION MESSAGING
Granted: June 1, 2023
Application Number:
20230171434
Methods are described to communicate source color volume information in a coded bitstream using SEI messaging. Such data include at least the minimum, maximum, and average luminance values in the source data plus optional data that may include the color volume x and y chromaticity coordinates for the input color primaries (e.g., red, green, and blue) of the source data, and the color x and y chromaticity coordinates for the color primaries corresponding to the minimum, average, and…
FRAME-RATE SCALABLE VIDEO CODING
Granted: June 1, 2023
Application Number:
20230171417
Methods and systems for frame rate scalability are described. Support is provided for input and output video sequences with variable frame rate and variable shutter angle across scenes, or for input video sequences with fixed input frame rate and input shutter angle, but allowing a decoder to generate a video output at a different output frame rate and shutter angle than the corresponding input values. Techniques allowing a decoder to decode more computationally-efficiently a specific…
SYSTEMS AND METHODS FOR ENHANCING AUDIO IN VARIED ENVIRONMENTS
Granted: June 1, 2023
Application Number:
20230169989
Novel methods and systems for creating and using user profiles for dialog boost and sound equalizer adjustment to compensate for various ambient sound situations. For creating profiles when not at the ambient sound, a synthesized/pre-recorded ambient noise can be mixed with the media to simulate the noise conditions.
IMAGE-DEPENDENT CONTRAST AND BRIGHTNESS CONTROL FOR HDR DISPLAYS
Granted: June 1, 2023
Application Number:
20230169930
Methods and systems to adjust differently brightness and contrast for dark and bright pictures on a display are provided. Given a tone-mapping curve mapping an input dynamic range to a display comprising a minimum and maximum display luminance value, the maximum display luminance value is lowered to an adjusted luminance value according to user defined parameters. The input dynamic range is tone-mapped to the display dynamic range using the adjusted luminance value. For brightness…
PROJECTOR DISPLAY SYSTEMS HAVING NON-MECHANICAL MIRROR BEAM STEERING
Granted: June 1, 2023
Application Number:
20230168626
Dual or multi-modulation display system are disclosed that comprise projector systems with at least one modulator that may employ non-mechanical beam steering modulation. Many embodiments disclosed herein employ a non-mechanical beam steering and/or polarizer to provide for a highlights modulator.
PROJECTION SYSTEM AND METHOD WITH ADJUSTABLE ANGLE ILLUMINATION
Granted: May 25, 2023
Application Number:
20230161234
A projection system and calibration method therefor relate to a light source configured to emit a light in response to an image data, an illumination optical system configured to steer the light, the illumination optical system including a first minor and a second minor, a digital micromirror device (DMD) including a plurality of micromirrors respectively configured to reflect the steered light to a filter as on-state light or to reflect the steered light as off-state light to a light…
BLIND LOCAL RESHAPING IN HDR IMAGING
Granted: May 18, 2023
Application Number:
20230156343
In an encoder, a high-dynamic range (HDR) image is encoded using a family of local forward reshaping functions selected according to an array of forward mapping indices (FMI) indicating which local forward reshaping function needs to be used for each pixel in the HDR image to generate a reshaped standard dynamic range (SDR) image. A decoder, given the reshaped SDR image, iteratively generates a reconstructed HDR image and estimated reshaped SDR images by adjusting a local FMI array and a…
METADATA-BASED POWER MANAGEMENT
Granted: May 18, 2023
Application Number:
20230154418
A method and apparatus therefor comprises: receiving an image data and a power metadata, wherein the power metadata includes information relating to a power consumption or an expected power consumption; determining, based on the power metadata, an amount and a duration of a drive modification that may be performed by a target display in response to the power consumption or the expected power consumption; and performing a power management of the target display based on the power metadata…
SYSTEMS AND METHODS TO GENERATE COPIES OF DATA FOR TRANSMISSION OVER MULTIPLE COMMUNICATION CHANNELS
Granted: May 11, 2023
Application Number:
20230146420
Systems and methods to transmit data over multiple communication channels in parallel with forward error correction. Original packets are evenly distributed to the channels as the initial systematically channel-encoded packets. Subsequent channel-encoded packets are configured to be linearly independent of their base sets of channel-encoded packets, where a base set for a subsequent channel-encoded packet includes those scheduled to be transmitted before the subsequent packet in the same…
METHOD FOR ENCODING AND DECODING IMAGE USING ADAPTIVE DEBLOCKING FILTERING, AND APPARATUS THEREFOR
Granted: May 11, 2023
Application Number:
20230141171
Disclosed is an encoding/decoding method and apparatus related to adaptive deblocking filtering. There is provided an image decoding method performing adaptive filtering in inter-prediction, the method including: reconstructing, from a bitstream, an image signal including a reference block on which block matching is performed in inter-prediction of a current block to be encoded; obtaining, from the bitstream, a flag indicating whether the reference block exists within a current picture…
SYSTEMS AND METHODS TO GENERATE COPIES OF DATA FOR TRANSMISSION OVER MULTIPLE COMMUNICATION CHANNELS
Granted: May 11, 2023
Application Number:
20230146420
Systems and methods to transmit data over multiple communication channels in parallel with forward error correction. Original packets are evenly distributed to the channels as the initial systematically channel-encoded packets. Subsequent channel-encoded packets are configured to be linearly independent of their base sets of channel-encoded packets, where a base set for a subsequent channel-encoded packet includes those scheduled to be transmitted before the subsequent packet in the same…
METHOD FOR ENCODING AND DECODING IMAGE USING ADAPTIVE DEBLOCKING FILTERING, AND APPARATUS THEREFOR
Granted: May 11, 2023
Application Number:
20230141171
Disclosed is an encoding/decoding method and apparatus related to adaptive deblocking filtering. There is provided an image decoding method performing adaptive filtering in inter-prediction, the method including: reconstructing, from a bitstream, an image signal including a reference block on which block matching is performed in inter-prediction of a current block to be encoded; obtaining, from the bitstream, a flag indicating whether the reference block exists within a current picture…
ECHO RESIDUAL SUPPRESSION
Granted: May 4, 2023
Application Number:
20230138637
A method of audio processing includes calculating an estimated echo residual power based on a long-term amount of echo cancellation as indicated by an estimated power gain profile, where the estimated power gain profile is based on a reference signal and an echo residual signal. Echo suppression of the echo residual may then be performed based on the estimated echo residual power.
WIDEBAND ADAPTATION OF ECHO PATH CHANGES IN AN ACOUSTIC ECHO CANCELLER
Granted: May 4, 2023
Application Number:
20230137830
Systems, methods, and computer program products for echo cancellation with prediction filter adaptation and detection of wideband offset between a reference signal (available to the echo canceller) and an output signal (unavailable to the echo canceller), where the output signal has been generated by applying at least one level shift to the reference signal, e.g. such that the level shift is unknown to the echo canceller.
