公开(公告)号：US20230013031A1

公开(公告)日：2023-01-19

申请号：US17947427

申请日：2022-09-19

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Weicheng LUO ,  Shaorui GAO ,  Haitao WANG ,  Peng ZHANG ,  Jiang LI

IPC: H04N13/363 ,  G09G3/36 ,  H04N13/383 ,  G09G3/00 ,  H04N13/302 ,  G02B30/56

Abstract: This application discloses a display method and a display control apparatus. The display system includes a projection screen, the projection screen includes a transparent substrate and a liquid crystal film covering the transparent substrate, and the liquid crystal film includes a plurality of liquid crystal cells. The display method includes: obtaining a to-be-displayed image; determining a target liquid crystal cell from the plurality of liquid crystal cells based on locations of pixels in the to-be-displayed image; setting a status of the target liquid crystal cell to a scattering state, and setting a status of a non-target liquid crystal cell to a transparent state, where the non-target liquid crystal cell is a liquid crystal cell in the plurality of liquid crystal cells other than the target liquid crystal cell; and displaying a projection image of the to-be-displayed image on the target liquid crystal cell.

公开(公告)号：US20220342211A1

公开(公告)日：2022-10-27

申请号：US17856451

申请日：2022-07-01

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Meng QIU ,  Jushuai WU ,  Shaorui GAO ,  Banghui GUO ,  Xiaogang SONG

IPC: G02B27/00 ,  G01S17/10 ,  G02B27/28 ,  G01S7/481 ,  G02B5/30 ,  G02B27/09 ,  G01S17/89 ,  G01S7/499

Abstract: A TOF depth sensing module and image generation method are provided. The TOF depth sensing module includes a light source, a polarization filter, a beam shaper, a first optical element, a second optical element, a receiving unit and a control unit. The light source is configured to generate a beam. The polarization filter is configured to obtain a beam. The beam shaper is configured to obtain a first beam whose FOV meets a first preset range. The control unit is configured to obtain an emergent beam. The control unit is further configured to control the second optical element to deflect, to the receiving unit, a reflected beam obtained by reflecting the emergent beam. In the method, a spatial resolution of a finally obtained depth image of the target object can be improved.

公开(公告)号：US20220342051A1

公开(公告)日：2022-10-27

申请号：US17856313

申请日：2022-07-01

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Banghui GUO ,  Xiaogang SONG ,  Shaorui GAO ,  Jushuai WU ,  Xuan LI ,  Weicheng LUO ,  Meng QIU

IPC: G01S7/4865 ,  G01S17/89 ,  G01S17/10 ,  G01S7/481

Abstract: Disclosed are a TOF depth sensing module and an image generation method. The TOF depth sensing module includes an array light source, a beam splitter, a collimation lens group, a receiving unit, and a control unit. The array light source includes N light emitting regions. The collimation lens group is located between the array light source and the beam splitter. The control unit is configured to emit light. The collimation lens group is configured to perform collimation processing on beams. The beam splitter is configured to perform beam splitting processing on beams. The receiving unit is configured to receive reflected beams of a target object. By means of the TOF depth sensing module, high spatial resolution and a high frame rate can be implemented in a process of scanning the target object.