Multi-photo pixel cell having vertical gate structure
Granted: January 25, 2022
Patent Number:
11233085
An apparatus is provided. The apparatus includes a semiconductor substrate including a first photodiode to generate a first charge, a second photodiode to generate a second charge, a barrier layer between the first photodiode and the second photodiode, wherein the first photodiode, the barrier layer, and the second photodiode form a stack. The apparatus further includes a floating drain and one or more gates including: a first gate portion on the semiconductor substrate and a second gate…
Display fabrication microassembly system
Granted: January 25, 2022
Patent Number:
11234351
Embodiments herein address these and other issues by providing a display assembly system with a pick-up tool having 6 degrees of freedom (6DOF) coupled with a pick-up head having an at least partially transparent adhesive element to which light-emitting structures may be adhered for picking and placement during the display manufacture process. Embodiments further include a touchdown sensor coupled with the pick-up tool and pick-up head that allow sensing of a force applied to the pick-up…
Pulsed driver for a diode light source
Granted: January 25, 2022
Patent Number:
11234307
A powering circuit for a diode light source includes an inductor charged through an on/off switch. The charging occurs during a charging cycle for a controllable amount of time when the on/off switch is closed. The energy of the charged inductor is used to power the semiconductor light source by opening the on/off switch. In such a driving configuration, the ringing is nearly constant and thus may be suppressed using an appropriately configured circuit.
Doppler shift estimation and correction for broadband communication in unmanned aerial vehicles
Granted: January 25, 2022
Patent Number:
11234202
Systems and associated methods for reducing Doppler shifts in the broadband signals between Unmanned Aerial Vehicles (UAVs) and ground stations are disclosed herein. In one embodiment, a method for reducing the Doppler shift of wireless signals includes estimating a velocity of the UAV based on a Global Positioning System (GPS) or an Inertial Measurement Unit (IMU) of the UAV and calculating the Doppler shift of an upload (UL) wireless signal based on the velocity of the UAV. The method…
Individualization of head related transfer functions for presentation of audio content
Granted: January 25, 2022
Patent Number:
11234096
A system for generating individualized HRTFs that are customized to a user of a headset. The system includes a server and an audio system. The server determines the individualized HRTFs based in part on acoustic features data (e.g., image data, anthropometric features, etc.) of the user and a template HRTF. The server provides the individualized HRTFs to the audio system. The audio system presents spatialized audio content to the user using the individualized HRTFs.
Adjusting acoustic parameters based on headset position
Granted: January 25, 2022
Patent Number:
11234095
An audio system (e.g., of an artificial reality headset) determines a position of the headset relative to a position of a head of a user wearing the headset. The determination is based in part on an image of a portion of the head from a tracking camera (e.g., eye tracking and/or face tracking) on the headset. The audio system adjusts an acoustic parameter based in part on the determined position of the headset. The audio system performs an action that uses the adjusted acoustic…
Remote inference of sound frequencies for determination of head-related transfer functions for a user of a headset
Granted: January 25, 2022
Patent Number:
11234092
A headset comprises a frame and an audio system. The audio system includes a microphone assembly positioned on the frame in a detection region, the detection region external to an ear of a user wearing the headset, and within a threshold distance from an ear canal of the ear, the microphone assembly configured to detect an audio signal emitted from an audio source, wherein the audio signal detected at the detection region is within a threshold degree of similarity of a sound pressure…
Using audio visual correspondence for sound source identification
Granted: January 25, 2022
Patent Number:
11234090
An audio-video correspondence system performs a correspondence analysis between audio and video content. The system obtains video content that includes audio content, the video content comprising a plurality of frames. The system identifies a first set of pixels within the video content associated with changes in pixel values over a first set of frames of the video content. The system subsequently identifies, from the audio content, first audio associated with the first set of frames…
Providing augmented message elements in electronic communication threads
Granted: January 25, 2022
Patent Number:
11233762
The present disclosure is directed toward systems and methods for providing message element in electronic communication threads. For example, systems and methods described herein identify message elements in electronic communication threads and add interactions between the message elements to the electronic communication thread.
Module ranking for a modular inbox
Granted: January 25, 2022
Patent Number:
11233760
Exemplary embodiments relate to improvements in the design of a messaging inbox. The inbox may display different units or “modules” for providing a user with quick access to different inbox functionalities. Content may be ranked and ordered within a module, and modules may be ranked and ordered with respect to each other. Inter-module ranking may be based on elements such as individual activity and the activity of the messaging service's user base, the value of the module to the…
Systems, devices, and methods for tiled multi-monochromatic displays
Granted: January 25, 2022
Patent Number:
11231588
The disclosed projector device may include (1) a first monochromatic emitter array having a plurality of emitters of a first color disposed in a two-dimensional configuration and (2) a second monochromatic emitter array having a plurality of emitters of a second color disposed in a two-dimensional configuration. The first and second monochromatic emitter arrays may be configured to emit images of the first and second colors into a waveguide configuration, and the first color may be…
Systems and methods for providing spatial awareness in virtual reality
Granted: January 25, 2022
Patent Number:
11232644
In one embodiment, a method includes rendering, for one or more displays of a VR device, a first output image of a VR environment based on a user's field of view. The VR environment has a virtual boundary corresponding to a real-world environment. The method further includes determining whether the user is approaching a threshold distance of the virtual boundary and determines the user's direction of movement and field of view, accessing one or more images of the real-world environment…
Collapsing of 3D objects to 2D images in an artificial reality environment
Granted: January 25, 2022
Patent Number:
11232643
The present embodiments relate to generating 3D objects in an artificial reality environment and collapsing 3D objects into 2D images representing the 3D objects. Users operating extra reality (XR) devices controlling the artificial reality environment can collaboratively create or modify content in the artificial reality environment, using real-world creation objects (such as a hand of the user or a pen held by the user) to create 3D objects. In response to a user triggering a collapse…
Hand calibration using single depth camera
Granted: January 25, 2022
Patent Number:
11232591
A system generates a user hand shape model from a single depth camera. The system includes the single depth camera and a hand tracking unit. The single depth camera generates single depth image data of a user's hand. The hand tracking unit applies the single depth image data to a neural network model to generate heat maps indicating locations of hand features. The locations of hand features are used to generate a user hand shape model customized to the size and shape of the user's hand.…
Training data quality for spam classification
Granted: January 25, 2022
Patent Number:
11232369
In one embodiment, a method includes accessing posts in a social-networking system. Each of the posts is unlabeled with respect to whether the post is known to be spam. The method also includes determining a posting user who submitted the post to the social-networking system and a recipient user to whom the post is addressed. The method further includes determining a first vector representation of the posting user and a second vector representation of the recipient user based on one or…
Personalized gesture recognition for user interaction with assistant systems
Granted: January 25, 2022
Patent Number:
11231946
In one embodiment, a method includes receiving a user request from a first user from a client system associated with a first user, wherein the user request comprise a gesture-input from the first user and a speech-input from the first user, determining an intent corresponding to the user request based on the gesture-input by a personalized gesture-classification model associated with the first user, executing one or more tasks based on the determined intent and the speech-input, and…
Handheld controllers for artificial reality and related methods
Granted: January 25, 2022
Patent Number:
11231791
The disclosed handheld controllers may include a multi-degree of freedom sensor module, a mouse module, and a switch. The mouse module may include a mouse sensor and a proximity sensor. The switch may be configured to activate the mouse sensor and deactivate the multi-degree of freedom sensor module when the proximity sensor indicates that the mouse sensor is proximate to a physical surface and to deactivate the mouse sensor and activate the multi-degree of freedom sensor when the…
Sequencer-based protocol adapter
Granted: January 25, 2022
Patent Number:
11231769
Methods, Apparatus, and Systems are discussed for a sequencer-based protocol adapter that executes a limited instruction set. The sequencer-based protocol adapter is implemented in electronic hardware and programmable registers in an integrated circuit and configured to transition a set of 1) one or more voltage sources, 2) one or more frequency sources, or 3) a combination of voltage sources and frequency sources, coupled with that sequencer-based protocol adapter. The sequencer-based…
Optical structure comprising a plurality of optical elements each configured to convert received light having a first polarization into output light having a second polarization focused to a common focal point
Granted: January 25, 2022
Patent Number:
11231593
A Pancharatnam Berry Phase (PBP) color corrected structure is presented that comprises a plurality of switchable gratings and a plurality of PBP active elements. Each switchable grating has an inactive mode when reflects light of a specific color channel, of a set of color channels, and transmits light of other color channels in the set of color channels, wherein the specific color channel is different for each of the plurality of switchable gratings, and to have an active mode to…
Augmented reality head-mounted display with a focus-supporting projector for pupil steering
Granted: January 25, 2022
Patent Number:
11231592
A head-mounted display device for providing images to a wearer includes a focus-supporting light projector and a beam steerer. The focus-supporting light projector is configured to project light for rendering images based at least on virtual reality contents and/or augmented reality contents. The light projected from the focus-supporting light projector corresponds to an image plane that is selected based at least in part on a position of a pupil of an eye of the wearer. The beam steerer…
