-
公开(公告)号：US20230090315A1
公开(公告)日：2023-03-23
申请号：US17481170
申请日：2021-09-21
摘要： An audio system for artificial reality systems is configured to reduce feedback and mitigate entrainment in audio content presented to the user. The audio system utilizes adaptive feedback cancellation processes to reduce feedback. The audio system processes reference signals in a hybrid of the time domain and the frequency domain to achieve rapid convergence with decreased entrainment. The audio system may pre-whiten reference signals and speaker signals and separate the pre-whitened signals into frequency bands using a filter bank. The audio system uses a state space algorithm to generate adaptive filters in each frequency band. The adaptive filters may be applied to the speaker signal to generate a feedback cancelation signal which may be subtracted from the reference signal to decrease feedback.
-
公开(公告)号：US20230064143A1
公开(公告)日：2023-03-02
申请号：US17461605
申请日：2021-08-30
摘要： Disclosed herein are related to a system and a method for determining an Angle of Approach (AoA) of a device. A first device may receive a report from a second device having a plurality of ultra-wideband (UWB) devices. The report may include a plurality of values comprising an elevation component and an azimuth component of the AoA from the first device. At least some of the plurality of values may be obtained according to measurements between the plurality of UWB devices of the second devices and the at least one UWB device of the first device. The first device may determine an AoA from the second device, using the plurality of values from the report received from the second device.
-
公开(公告)号：US11595646B2
公开(公告)日：2023-02-28
申请号：US16912290
申请日：2020-06-25
IPC分类号： H04N19/119 , H04N19/174 , G02B27/01 , G06F3/01 , G06T19/00 , H04L65/70 , H04L65/75
摘要： Disclosed herein are related to a device and a method of remotely rendering an image. In one approach, a device divides an image of an artificial reality space into a plurality of slices. In one approach, the device encodes a first slice of the plurality of slices. In one approach, the device encodes a portion of a second slice of the plurality of slices, while the device encodes a portion of the first slice. In one approach, the device transmits the encoded first slice of the plurality of slices to a head wearable display. In one approach, the device transmits the encoded second slice of the plurality of slices to the head wearable display, while the device transmits a portion of the encoded first slice to the head wearable display.
-
公开(公告)号：US11585980B2
公开(公告)日：2023-02-21
申请号：US17180608
申请日：2021-02-19
发明人： Andrew John Ouderkirk , Sheng Ye , Tingling Rao
摘要： Disclosed is a polymeric waveguide for propagating light therein along width and length dimensions of the polymeric waveguide. The polymeric waveguide has a first curved surface on one side thereof and a second curved surface on an opposite second side thereof, and a refractive index spatially varying through a thickness thereof between the first curved surface and the second curved surface. The polymeric waveguide is curved in a cross-section comprising at least one of the width and length dimensions.
-
公开(公告)号：US20230048367A1
公开(公告)日：2023-02-16
申请号：US17877263
申请日：2022-07-29
摘要： There are provided a volume Bragg grating and a method and a system for fabricating it. For instance, there is provided a system that includes a set of spatial light modulators configured to receive a light input. The light input can include a set of input paths where each input path in the set of input paths corresponds to a respective spatial light modulator from the set of spatial light modulators. The system can further include an input light processing module configured to condition an input light beam to output the light input to the set of spatial light modulators. The system can further include an optics module configured to receive a pattern originating from the set of spatial light modulators.
-
公开(公告)号：US20230046155A1
公开(公告)日：2023-02-16
申请号：US17747767
申请日：2022-05-18
发明人： Feiyu Lu , Mark Parent , Hiroshi Horii , Yan Xu , Peiqi Tang
IPC分类号： G06F3/04815 , G06T19/00 , G06T7/73 , G06T15/20
摘要： The disclosed computer-implemented method may include (1) identifying a trigger element within a field of view presented by a display element of an artificial reality device, (2) determining a position of the trigger element within the field of view, (3) selecting a position within the field of view for a virtual widget based on the position of the trigger element, and (4) presenting the virtual widget at the selected position via the display element. Various other methods, systems, and computer-readable media are also disclosed.
-
公开(公告)号：US20230039862A1
公开(公告)日：2023-02-09
申请号：US17843138
申请日：2022-06-17
摘要： A polymer bilayer includes a layer of a porous fluoropolymer directly overlying a layer of polyethylene. The polyethylene layer may be porous or dense and may include an ultra-high molecular weight polymer. The polymer bilayer may be co-integrated with structures (e.g., wearable devices) exposed to high thermal loads (>0-1000 W/m2) and provide passive cooling thereof. For instance, passive cooling of AR/VR glasses under different solar loads may be achieved by a polymer bilayer that is both highly reflective across solar heating wavelengths and highly emissive in the long-wavelength infrared. The high reflectance decreases energy absorption across the solar spectrum while the high emissivity promotes radiative heat transfer to the surroundings.
-
公开(公告)号：US11567255B1
公开(公告)日：2023-01-31
申请号：US17481227
申请日：2021-09-21
摘要： A waveguide illuminator includes adjacent linear and slab waveguide areas. An input light beam is guided in a linear waveguide, is split into a plurality of sub-beams to propagate in individual linear waveguides to a slab waveguide area and form an output light beam in the slab waveguide area. An array of out-couplers is disposed in the slab waveguide area. The array of out-couplers out-couples portions of the output light beam forms an array of out-coupled beam portions for illuminating a display panel. Locations of the array of out-couplers are coordinated with locations of individual pixels of the display panel, thereby improving efficiency of light utilization by the display panel.
-
公开(公告)号：US20230017167A1
公开(公告)日：2023-01-19
申请号：US17486383
申请日：2021-09-27
IPC分类号： F21V8/00
摘要： A waveguide illuminator includes an input waveguide, a waveguide splitter coupled to the input waveguide, and a waveguide array coupled to the waveguide splitter. The waveguide array includes an array of out-coupling gratings that out-couple portions of the split light beam to form an array of out-coupled beam portions for illuminating a display panel. The out-coupling gratings may be apodized to reduce light scattering by the gratings. Additionally, gaps between the out-coupling gratings along the waveguides may be filled by gap gratings and/or etched grooves running parallel to the waveguides.
-
公开(公告)号：US11557692B2
公开(公告)日：2023-01-17
申请号：US16748692
申请日：2020-01-21
摘要： The invention is directed towards enhanced systems and methods for employing a pulsed photon (or EM energy) source, such as but not limited to a laser, to electrically couple, bond, and/or affix the electrical contacts of a semiconductor device to the electrical contacts of another semiconductor devices. Full or partial rows of LEDs are electrically coupled, bonded, and/or affixed to a backplane of a display device. The LEDs may be μLEDs. The pulsed photon source is employed to irradiate the LEDs with scanning photon pulses. The EM radiation is absorbed by either the surfaces, bulk, substrate, the electrical contacts of the LED, and/or electrical contacts of the backplane to generate thermal energy that induces the bonding between the electrical contacts of the LEDs' electrical contacts and backplane's electrical contacts. The temporal and spatial profiles of the photon pulses, as well as a pulsing frequency and a scanning frequency of the photon source, are selected to control for adverse thermal effects.
-
-
-
-
-
-
-
-
-
搜索结果
2725 条记录 (耗时 0.031 秒)
