公开(公告)号：US12074408B2

公开(公告)日：2024-08-27

申请号：US16654331

申请日：2019-10-16

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Karol Constantine Hatzilias ,  Christopher Yuan Ting Liao ,  Robin Sharma

IPC: H01S5/183 ,  G02B27/00 ,  H01S5/026 ,  H01S5/10

CPC classification number: H01S5/026 ,  G02B27/0093 ,  H01S5/1078 ,  H01S5/183 ,  H01S5/18347 ,  H01S2301/02

Abstract: A light source structure includes a vertical cavity surface-emitting laser (VCSEL) device having a top surface and at least one side surface substantially perpendicular to and adjoining the top surface. The VCSEL device is configurable to output directed emission of light through the top surface. The light source structure also includes a light barrier surrounding at least a top portion of the VCSEL device and separated from the at least one side surface. The light barrier is configured to receive spontaneous emission out of the VCSEL device through the at least one side surface.

公开(公告)号：US20240284139A1

公开(公告)日：2024-08-22

申请号：US18652345

申请日：2024-05-01

Applicant: Meta Platforms Technologies, LLC

Inventor： Andrew Lovitt ,  Nils Thomas Fritiof LUNNER ,  Vladimir TOURBABIN ,  Jacob Ryan DONLEY

IPC: H04S7/00

CPC classification number: H04S7/303 ,  H04S7/307 ,  H04S2400/11 ,  H04S2420/01

Abstract: A communication system provides audio content to one or more client devices capable of playing spatialized audio content. For example, the communication system receives audio content from a client device and transmits the audio content to other client devices to be played for users. The communication system dynamically modifies audio content transmitted to different client devices based on a payload including audio parameters (e.g., local area acoustic properties, an audiogram for a user, a head related transfer function for a user, etc.) received from a client device.

公开(公告)号：US20240284020A1

公开(公告)日：2024-08-22

申请号：US18639556

申请日：2024-04-18

Applicant: Meta Platforms Technologies, LLC

Inventor： Kirk Erik Burgess ,  Kevin Sawyer

IPC: H04N23/50 ,  H04N5/77 ,  H04N5/91 ,  H04N23/55 ,  H04N23/56 ,  H04N23/60 ,  H04N23/61

CPC classification number: H04N23/50 ,  H04N5/77 ,  H04N5/91 ,  H04N23/55 ,  H04N23/56 ,  H04N23/61 ,  H04N23/64

Abstract: A system for recording video in a wearable device is provided. The system includes: a barrel to provide mechanical support for one or more components in the system, a camera, disposed inside the barrel, wherein the camera includes a front lens with a field of view pointed to an onlooker outside of the wearable device, a cover glass mounted on the barrel, the cover glass configured to protect the front lens and one or more components in the system, a light emitting device, disposed inside the barrel, and a light pipe configured to receive a light from the light emitting device and to transmit the light through an overlap area on the cover glass and to the onlooker, when the camera is recording a scene outside of the wearable device, within the field of view, wherein the camera field of view comprises at least a portion of the overlap area.

公开(公告)号：US20240283444A1

公开(公告)日：2024-08-22

申请号：US18170795

申请日：2023-02-17

Applicant: Meta Platforms Technologies, LLC

Inventor： Umanath Ramachandra Kamath ,  Ali Mesgarani ,  Jason Silver ,  Robert Wiser ,  Augusto Ronchini Ximenes

IPC: H03K17/16

CPC classification number: H03K17/162 ,  H01L27/088

Abstract: A circuit may be configured to reduce current leakage. The circuit may include a bias generator, a charge interface, and a charge controller. The bias generator may be coupled to a first voltage source and configured to generate a first current and provide a first voltage. The charge interface may be communicatively coupled to the bias generator and configured to mirror the first current into a second current. The charge controller may be communicatively coupled to the charge interface and configured to receive the second current from the charge interface and provide a second voltage. The bias generator may be further configured to perform an ultra-low leakage switching operation in which the first voltage is switched to a third voltage while reducing a first possibility of band-band tunneling leakage at the charge interface.

公开(公告)号：US20240282398A1

公开(公告)日：2024-08-22

申请号：US18172983

申请日：2023-02-22

Applicant: Meta Platforms Technologies, LLC

Inventor： Umanath Ramachandra Kamath ,  Ali Mesgarani ,  Robert Wiser

IPC: G11C29/50

CPC classification number: G11C29/50004 ,  G11C29/50016

Abstract: A method may be performed by a leakage monitoring and compensation system configured to estimate and compensate for leakage current in memory unit cells. The method may include identifying a leakage monitoring component associated with a memory unit cell. Further, the method may include sampling multiple leak events during a first exposure window. The method may include storing a first count representing the plurality of leak events sampled during the first exposure window. Each leak event may correspond to a unit of memory leakage. The method may include sampling multiple sensing events during a second exposure window. The method may include detecting a second count representing the sensing events sampled during the second exposure window. The method may include determining a compensation value representing a difference between the first count and the second count.

公开(公告)号：US20240282225A1

公开(公告)日：2024-08-22

申请号：US18503740

申请日：2023-11-07

Applicant: Meta Platforms Technologies, LLC

Inventor： Aditya Gadre

IPC: G09G3/00 ,  G06F3/01 ,  G06T11/00

CPC classification number: G09G3/003 ,  G06F3/012 ,  G06F3/013 ,  G06F3/017 ,  G06T11/001 ,  G09G2354/00

Abstract: A system for implementing an augmented reality (AR)/virtual reality (VR) display includes a hardware (HW) architecture that employs a system-on-chip (SoC) to compose and submit textures. The SoC composes and submits textures by using display serial interface (DSI) display lines to transmit the textures to a physical display. Software (SW) architecture includes a stack display architecture with an applications level using the surface rendered by applications, a display service level to compose superframes, provide an abstraction layer on top of a surface flinger (SL) application programming interface (API), and allow assignment of textures and metadata to different hardware planes, and a driver level. The system uses the surfaces or enhanced effects that are rendered by the applications or the compositor, depending on the type of the application, and computes the metadata related to the location or coordinates.

公开(公告)号：US12069463B2

公开(公告)日：2024-08-20

申请号：US17892310

申请日：2022-08-22

Applicant: Meta Platforms Technologies, LLC

Inventor： William Owen Brimijoin, II ,  Samuel Clapp ,  Peter Harty Dodds ,  Nava K. Balsam ,  Tomasz Rudzki ,  Ryan Rohrer ,  Kevin Scheumann ,  Michaela Warnecke

IPC: H04S1/00

CPC classification number: H04S1/005 ,  H04S2420/01

Abstract: A system is disclosed for using an audio time and level difference renderer (TLDR) to generate spatialized audio content for multiple channels from an audio signal received at a single channel. The system selects an audio TLDR from a set of audio TLDRs based on received input parameters. The system configures the selected audio TLDR based on received input parameters using a filter parameter model to generate a configured audio TLDR that comprises a set of configured binaural dynamic filters, and a configured delay between the multiple channel. The system applies the configured audio TLDR to an audio signal received at the single channel to generate spatialized multiple channel audio content for each channel of the multiple audio channel and presents the generated spatialized audio content at multiple channels to a user via a headset.

公开(公告)号：US12067959B1

公开(公告)日：2024-08-20

申请号：US18172613

申请日：2023-02-22

Applicant: Meta Platforms Technologies, LLC

Inventor： Nilanjan Goswami ,  Hideo Tamama ,  Christopher James Goodman ,  Steve John Clohset ,  Shanmathi Natarajan

IPC: G09G5/18

CPC classification number: G09G5/18 ,  G09G2310/04

Abstract: A method is disclosed for receiving a synchronization signal from a display circuit configured to display a series of frames, each frame comprising a plurality of tiles of pixels, determining, based on the received synchronization signal, that the display circuit has consumed data corresponding to one or more tiles of a frame, identifying a predetermined number of tiles that are subsequent to the one or more tiles consumed by the display circuit based on the synchronization signal, determining that one or more tiles of the identified tiles require an update, selectively rendering the determined tiles, and transmitting the rendered tiles to the display circuit.

公开(公告)号：US20240274758A1

公开(公告)日：2024-08-15

申请号：US18421942

申请日：2024-01-24

Applicant: Meta Platforms Technologies, LLC

Inventor： Shenglin YE ,  Xinyu ZHU ,  Xiangtong LI ,  Ruiqing MA ,  Yu-Jen WANG ,  Yun-Han LEE ,  Linghui RAO ,  Sascha HALLSTEIN

IPC: H01L33/50 ,  G02F1/13357 ,  G06F3/01 ,  H01L25/075 ,  H01L25/16 ,  H01L33/62

CPC classification number: H01L33/502 ,  H01L25/0753 ,  H01L25/167 ,  H01L33/62 ,  G02F1/133603 ,  G06F3/011

Abstract: A light-emitting diode (“LED”) package includes a package housing defining a space. The LED package includes a first LED disposed with the space defined by the package housing, and configured to emit a first light having a blue wavelength range. The blue wavelength range has a peak wavelength ranging from about 440 nm to about 480 nm. The LED package includes a second LED disposed within the space, and configured to emit a second light having a red wavelength range. The red wavelength range has a peak wavelength ranging from about 610 nm to about 680 nm. The LED package includes a phosphor filler filling the space and configured to absorb a portion of the first light to emit a third light having a green wavelength range. The green wavelength range has a peak wavelength ranging from about 510 nm to about 570 nm.

公开(公告)号：US20240273764A1

公开(公告)日：2024-08-15

申请号：US18168111

申请日：2023-02-13

Applicant: Meta Platforms Technologies, LLC

Inventor： Cheng Chang ,  Xuejing Lei

IPC: G06T9/00 ,  G06T7/11 ,  G06T7/40 ,  G06T7/90

CPC classification number: G06T9/00 ,  G06T7/11 ,  G06T7/40 ,  G06T7/90 ,  G06T2207/10024 ,  G06T2207/20021

Abstract: In one embodiment, a computer system may access one or more first texture components and one or more second texture components of a physically-based rendering (PBR) texture set. The computer system may further determine a predicted texture component associated with each of the one or more second texture components based on the one or more first texture components. The computing system may further determine, for each of the one or more second texture components, a residual component, based on a comparison of the predicted texture component and each of the one or more second texture components. The computing system may then encode the PBR texture set based on the one or more first texture components and the residual components.