公开(公告)号：US12210159B2

公开(公告)日：2025-01-28

申请号：US17504340

申请日：2021-10-18

Applicant: Huawei Technologies Co., Ltd.

Inventor： Atanas Boev ,  Hector Navarro Fructuoso ,  Bogdan Cihodariu Ionita ,  Panji Setiawan

IPC: G02B27/01 ,  G02B26/08 ,  G02B27/14

Abstract: An optical system for a display device for head mounting is described. In particular a Maxwellian display device, with an enlarged eye-box is described. The optical system includes a beam forming element configured to converge multiple sets of light beams into at least two points of convergence (e.g., on an exit pupil of the optical system or of the display device using the optical system), and at least one optical arrangement comprising an input for input light beams, at least one beam splitter and at least three reflectors. The at least one beam splitter and at least three reflectors are positioned to form the multiple sets of the light beams from the input light beams such that the multiple sets of the light beams have equally long beam paths from the input to the beam forming element. Each point of convergence is a convergent viewing point for a user, thus enlarging the eye-box.

公开(公告)号：US11630247B2

公开(公告)日：2023-04-18

申请号：US16842494

申请日：2020-04-07

Applicant: Huawei Technologies Co., Ltd.

Inventor： Hector Navarro Fructuoso ,  Panji Setiawan

IPC: G02B3/14 ,  G02B27/01

Abstract: A focus tunable optical system includes a lens assembly. The lens assembly includes: focus tunable lenses (FTLs) coaxially disposed along an optical axis, each FTL contributing to an optical power of the lens assembly; and a controller configured to control the optical power of the lens assembly by applying to each FTL a respective control signal, thereby generating a periodic optical response of the respective FTL. The optical response of each FTL is substantially different from the optical response of any other FTL of the plurality of FTLs.

公开(公告)号：US11601637B2

公开(公告)日：2023-03-07

申请号：US17156105

申请日：2021-01-22

Applicant: Huawei Technologies Co., Ltd.

Inventor： Atanas Boev ,  Panji Setiawan ,  Bogdan Cihodariu Ionita

IPC: H04N13/322 ,  H04N13/194 ,  H04N13/398 ,  G02B3/14

Abstract: An image transmission device of a multifocal display system is described, for transmitting a set of N composite images based on a set of N primary images to an image reception device. N is greater or equal 2, and each of the N primary images has a focus distance associated therewith. The image transmission device includes processing circuitry configured to partition each of the N primary images into image portions and generate the N composite images by placing each image portion of each of the N primary images into one of the N composite images such that each of the N composite images comprises image portions from two or more of the N primary images. A communication interface transmits the N composite images to the image reception device (103).

公开(公告)号：US11164012B2

公开(公告)日：2021-11-02

申请号：US16729268

申请日：2019-12-27

Applicant: Huawei Technologies Co., Ltd.

Inventor： Atanas Boev ,  Onay Urfalioglu ,  Panji Setiawan

IPC: G06K9/00 ,  B60W40/072 ,  G06K9/46 ,  G06K9/62

Abstract: A driver assistance system detects lane markings in a perspective image of a road in front of a vehicle. The driver assistance system extracts a plurality of features, in particular lane markings, from the perspective image for generating a set of feature coordinates, in particular lane marking coordinates. The system generates a plurality of pairs of feature coordinates, each pair defining a straight line, and estimates a lane curvature on the basis of a subset of the pairs of feature coordinates. For each pair a straight line defined by the pair intersects a predefined target portion of the perspective image, the predefined target portion including a plurality of possible positions of a vanishing point.

公开(公告)号：US11081082B2

公开(公告)日：2021-08-03

申请号：US16752965

申请日：2020-01-27

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Atanas Boev ,  Panji Setiawan

IPC: G09G5/02 ,  G02B30/26 ,  G02B27/01 ,  G02F1/1335 ,  G09G3/36

Abstract: The disclosure provides a multifocal display device, comprising a display configured to generate an image, and a controller configured to control the display according to a bit sequence provided over a determined time period to generate the image with one or more colors. The bit sequence includes for each color a subsequence of bits of different significance. Neither the first bit nor the last bit of the subsequence for the respective color is the most significant bit of the subsequence.

公开(公告)号：US10600426B2

公开(公告)日：2020-03-24

申请号：US15797007

申请日：2017-10-30

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Panji Setiawan ,  Karim Helwani

IPC: G10L19/008 ,  H04S3/00

Abstract: The invention relates to audio signal processing apparatuses and methods, such as an audio signal downmixing apparatus (105) for processing an input audio signal comprising a plurality of input channels (113) into an output audio signal comprising a plurality of primary output channels (123) and at least one auxiliary output channel (125) using a downmix matrix D, wherein the downmix matrix D comprises a primary downmix matrix DU providing the plurality of primary output channels (123) and an auxiliary downmix matrix DW providing the at least one auxiliary output channel (125). The audio signal downmixing apparatus (105) comprises an auxiliary downmix matrix determiner (107) configured to determine the auxiliary downmix matrix DW, and a processor (109) configured to process the input audio signal into the output audio signal using the downmix matrix D.

公开(公告)号：US10482889B2

公开(公告)日：2019-11-19

申请号：US15797007

申请日：2017-10-30

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Panji Setiawan ,  Karim Helwani

IPC: G10L19/008 ,  H04S3/00

Abstract: The invention relates to audio signal processing apparatuses and methods, such as an audio signal downmixing apparatus (105) for processing an input audio signal comprising a plurality of input channels (113) into an output audio signal comprising a plurality of primary output channels (123) and at least one auxiliary output channel (125) using a downmix matrix D, wherein the downmix matrix D comprises a primary downmix matrix DU providing the plurality of primary output channels (123) and an auxiliary downmix matrix DW providing the at least one auxiliary output channel (125). The audio signal downmixing apparatus (105) comprises an auxiliary downmix matrix determiner (107) configured to determine the auxiliary downmix matrix DW, and a processor (109) configured to process the input audio signal into the output audio signal using the downmix matrix D.

公开(公告)号：US09936328B2

公开(公告)日：2018-04-03

申请号：US15268874

申请日：2016-09-19

Applicant: Huawei Technologies Co., Ltd.

Inventor： Simone Fontana ,  Peter Grosche ,  Panji Setiawan

IPC: H04R5/00 ,  H04S7/00 ,  G01H7/00 ,  H04S1/00

CPC classification number: H04S7/305 ,  G01H7/00 ,  H04S1/005 ,  H04S2400/01 ,  H04S2420/01

Abstract: An apparatus for estimating an overall mixing time, where the apparatus comprises a processing element configured to determine differences between energy profiles of a first room impulse response of the first pair of room impulse responses and a second room impulse response of the first pair of room impulse responses at a plurality of different sample times of the first pair of room impulse responses, set a sample time of the plurality of sample times as a mixing time for the first pair of room impulse responses at which the difference between the energy profiles of the first room impulse response and the second room impulse response of the first pair of room impulse responses is equal to or below a threshold value, and determine the overall mixing time based on the mixing time for the first pair of room impulse responses.

公开(公告)号：US11632549B2

公开(公告)日：2023-04-18

申请号：US17307530

申请日：2021-05-04

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Panji Setiawan ,  Eyal Shlomot

IPC: H04N19/124 ,  H04N19/94 ,  G10L19/008 ,  H04N19/119 ,  H04N19/157 ,  H04N19/172 ,  G10L19/038 ,  G10L19/22

Abstract: A method for encoding an input signal comprising signal frames into quantized bits is disclosed, the method comprises generating, for each frame of the input signal, a signal matrix comprising matrix coefficients obtained from that frame, grouping the matrix coefficients of each signal matrix into a plurality of partition vectors, and for each partition vector, selecting one vector quantization scheme from among a plurality of vector quantization schemes and quantizing that partition vector according to the selected vector quantization scheme to obtain the quantized bits. In an adaptive mode, the method comprises grouping differently the matrix coefficients obtained from different frames, and/or selecting different vector quantization schemes for partition vectors obtained from different frames.

公开(公告)号：US11470289B2

公开(公告)日：2022-10-11

申请号：US17140808

申请日：2021-01-04

Applicant: Huawei Technologies Co., Ltd.

Inventor： Hector Navarro Fructuoso ,  Bogdan Cihodariu Ionita ,  Atanas Boev ,  Panji Setiawan

IPC: H04N9/31 ,  G02B27/01 ,  G06F3/01

Abstract: The disclosure relates to a retinal display apparatus for generating an image on the retina of an eye of a user, wherein the retinal display apparatus is configured to generate multiple light beams, each light beam conveying an instance of the image, wherein the multiple light beams correspond one-to-one to multiple potential orientations of the eye of the user. Moreover, the disclosure relates to a corresponding method.