Content-adaptive non-uniform image downsampling using predictive auxiliary convolutional neural network
Granted: November 9, 2021
Patent Number:
11170470
Techniques are described for content-adaptive downsampling of digital images and videos for computer vision operations, such as semantic segmentation. A computer vision system comprises a memory, one or more processors operably coupled to the memory and a downsampling module configured for execution by the one or more processors to perform, based on a non-uniform sampling model trained to predict content-aware sampling parameters, downsampling input image data to generate downsampled…
Techniques for enhancing group communication on a mobile device
Granted: November 9, 2021
Patent Number:
11172338
Techniques for enhancing group communication on a device are described. A method may include presenting a message in a message portion of a user interface (UI) for a group communication application executing on a first device, where the group communication application communicates messages among multiple devices. The method may further include monitoring an input component for the first device and detecting a first control directive from the input component. The first control directive…
Social network status
Granted: November 9, 2021
Patent Number:
11171910
Systems and techniques are described that enable users to interact and share content through a social network application and/or service with other users. A social networking system may determine that a first application and a second application are installed on a device and are both useable to share content between a first account and one or more contact accounts. The social networking system may receive content associated with the first application and the second application and may…
Techniques for intelligent messaging for message syncing
Granted: November 9, 2021
Patent Number:
11171903
Techniques for intelligent messaging for message syncing are described. An apparatus may comprise a recipient inbound messaging component, a recipient queue management component, a recipient update customization component, and a recipient outbound messaging component. The recipient inbound messaging component may be operative to receive an incoming update at a recipient update queue, the recipient update queue associated with a recipient of the incoming update. The recipient queue…
Social network onboarding
Granted: November 9, 2021
Patent Number:
11171802
Techniques are described that determine a user to participate in software testing of a social network application and/or service and to enable the user to propagate an invitation to contacts of the user to participate in the software testing of the social network application. In some examples, the user may be provided a message via an inbox of a first service including the invitation and a selectable option to install an application associated with a second service. In some, examples,…
Multi-key encryption and decryption for side channel attack prevention
Granted: November 9, 2021
Patent Number:
11171772
This disclosure describes systems on a chip (SOCs) that prevent side channel attacks (SCAs). An example SoC includes an encryption engine, a key store, and a security processor. The key store is configured to store a plurality of encryption keys. The encryption engine is configured to encrypt transmit (Tx) channel data using any encryption key of the plurality of encryption keys stored to the key store. The security processor is configured to activate SCA mitigation logic of the SoC…
Personalized equalization of audio output based on ambient noise detection
Granted: November 9, 2021
Patent Number:
11171621
An audio playback device detects via an acoustic sensor of an audio playback device, ambient noise surrounding the audio playback device. The audio playback device updates an equalization filter based on the detected ambient noise, wherein the equalization filter adjusts one or more acoustic parameters of content presented by the audio playback device. The audio playback device adjusts a leakage control parameter based on the detected ambient noise, wherein the leakage control parameter…
Generating and modifying representations of objects in an augmented-reality or virtual-reality scene
Granted: November 9, 2021
Patent Number:
11170577
In one embodiment, a method for generating subframes may include accessing a rendered frame depicting a virtual scene from a first viewpoint of a user. The rendered frame may be generated based on at least one 3D model of an object in the virtual scene. A computing system may generate plurality of surfaces based on the rendered frame. Each surface may be positioned within a 3D space and comprises visual information. The system may determine a second viewpoint of the user in the 3D space…
Progressive display of virtual objects
Granted: November 9, 2021
Patent Number:
11170576
A progressive display system can compute a virtual distance between a user and virtual objects. The virtual distance can be based on: a distance between the user and an object, a viewing angle of the object, and/or a footprint of the object in a field of view. The progressive display system can determine where the virtual distance falls in a sequence of distance ranges that correspond to levels of detail. Using a mapping between content sets for the object and levels of detail that…
Comfortable navigation in large-scale virtual worlds when constrained by small-scale physical environment
Granted: November 9, 2021
Patent Number:
11170575
In one embodiment, a method includes segmenting a layout of a physical space surrounding a user into physical segments; generating, based on the physical segments, virtual paths for a virtual environment through which the user can navigate by traveling the physical segments; identifying, based on a current location of the user with respect to the physical space, a portion of the physical segments for which to enable an intrusion detection feature; detecting a physical object in the…
Systems and methods for predicting qualitative ratings for advertisements based on machine learning
Granted: November 9, 2021
Patent Number:
11170288
Systems, methods, and non-transitory computer readable media can determine a representation of an advertisement based on a first machine learning model. The representation can be provided to a second machine learning model. One or more qualitative ratings associated with the advertisement can be determined based on the second machine learning model.
Machine-learning model for ranking diverse content
Granted: November 9, 2021
Patent Number:
11170006
In one embodiment, a method includes a computing system accessing a content item associated with a content provider, the content item having a first set of attributes and a second set of attributes. The system may generate, using a first machine-learning model, a first ranking score of the content item for a user based on the first set of attributes. The system may generate cluster representations of the second set of attributes of the content item. The system may generate, using a…
System and method for key value store
Granted: November 9, 2021
Patent Number:
11169816
In certain embodiments, a method includes starting an application as a first process within a user space of an operating system. The application instantiates a key-value store and a file system associated with the operating system. The method also includes managing, by a block device service running within the user space, one or more first data blocks of a persistent storage allocated to the key value store and one or more second data blocks of the persistent storage allocated to the…
Haptic-feedback apparatuses that utilize linear motion for creating haptic cues
Granted: November 9, 2021
Patent Number:
11169607
An apparatus for creating haptic simulations is provided. The apparatus includes a body that defines an inner cavity, and a pair of connectors positioned adjacent to ends of the body. A wire electrically connects the connectors and is wound around a first portion of the body in a first direction and wound around a second portion of the body in an opposite direction. A ring magnet is secured to an outer surface of the body. An armature magnet is slidably positioned within the inner cavity…
Spatially multiplexed volume Bragg gratings with varied refractive index modulations for waveguide display
Granted: November 9, 2021
Patent Number:
11169379
A waveguide display includes a waveguide transparent to visible light, a first volume Bragg grating (VBG) on the waveguide and characterized by a first refractive index modulation, and a second reflection VBG on the waveguide and including a plurality of regions characterized by different respective refractive index modulations. The first reflection VBG is configured to diffract display light in a first wavelength range and a first field of view (FOV) range such that the display light in…
Varifocal projection display
Granted: November 9, 2021
Patent Number:
11169358
A virtual scene may be projected onto a two-dimensional screen of a head mounted display. The two-dimension screen may be substantially perpendicular to a visual axis of a user wearing the head mounted display. A lens assembly of the projector may be adjusted to focus on a viewing portion of the virtual scene on the screen.
System and method for automatic lens assembling and testing
Granted: November 9, 2021
Patent Number:
11169354
A method for assembling a first lens and a second lens is provided. The method includes performing an optical center measurement for at least one of the first lens or the second lens, and performing an optical center adjustment when the optical center measurement does not satisfy a predetermined optical center condition. The method also includes performing a polarimetric measurement for at least one of the first lens or the second lens, and performing a polarimetric angle adjustment when…
Systems and methods for installing fiber optic cable about a powerline conductor
Granted: November 9, 2021
Patent Number:
11169351
The disclosed system may include (1) a drive subsystem that translates along a powerline conductor, (2) a rotation subsystem that rotates a segment of fiber optic cable about the powerline conductor while the drive subsystem translates along the powerline conductor such that the segment of fiber optic cable is wrapped helically about the powerline conductor, and (3) an extension subsystem that (a) mechanically couples the rotation subsystem to the drive subsystem, and (b) selectively…
Collaborative shear display
Granted: November 9, 2021
Patent Number:
11168768
A haptic device includes a network of motorized shear actuators. The shear actuators each include a drive mechanism and a lead screw having a threaded outer surface rotatably coupled to the drive mechanism and extending along a primary axis. A carriage is movably coupled to the lead screw by a nut having a threaded inner surface and is disposed within a chassis. One or more flexure springs are attached to the chassis and are configured to exert a reactive force to resist a force applied…
Systems and methods for recommending content
Granted: November 2, 2021
Patent Number:
11163843
Systems, methods, and non-transitory computer-readable media can determine at least one scenario that applies to a user of a social networking system based at least in part on features associated with the user. One or more groups of content recommendations associated with the at least one scenario can be determined. Each group of content recommendations can include a set of content items that relate to the at least one scenario. The one or more groups of content recommendations can be…
