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11.发明申请公开(公告)号：US20190064737A1
公开(公告)日：2019-02-28
申请号：US15920771
申请日：2018-03-14
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Bingchuan SHI
CPC classification number: G03H1/14 , G03H1/0443 , G03H1/12 , G03H1/2286 , G03H1/2294 , G03H2001/0224 , G03H2001/2292 , G03H2210/11 , G03H2210/12 , G03H2210/44 , G03H2223/24 , G03H2225/31 , G03H2225/32 , G03H2225/33 , G03H2225/34
Abstract: The present disclosure provides an optical modulation device, an optical modulation method and a holographic display apparatus. The optical modulation device is configured to perform optical modulation of a light beam and comprising: an amplitude modulator, configured to perform amplitude modulation of the light beam based on amplitude information in complex amplitude information of each pixel of a digital hologram; an optical scanning assembly, configured to scan the light beam within a predetermined range; a phase modulator, configured to perform phase modulation of the light beam based on phase information in the complex amplitude information.
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公开(公告)号：US20190064424A1
公开(公告)日：2019-02-28
申请号：US15960802
申请日：2018-04-24
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Naifu WU , Bingchuan SHI
Abstract: The present disclosure provides an optical waveguide and an optical device. The optical waveguide includes a first total reflection surface, a second total reflection surface, at least two transflective films, a first phase retardation film, and a second phase retardation film, each of the transflective films being configured to completely transmit light having a first polarization state, half transmit and half reflect light having a second polarization state, so that reflected light having the second polarization state propagates through the second phase retardation film and the second total reflection surface toward a target, thereby ensuring a transmission angle of the light output to the outside of the optical waveguide to be sufficiently small, which effectively solves the problem of the stray light, ensures the imaging quality, and improves the user's experience.
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公开(公告)号：US20190049738A1
公开(公告)日：2019-02-14
申请号：US15935146
申请日：2018-03-26
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Bingchuan SHI
Abstract: A beam expanding structure and an optical display module are disclosed. The beam expanding structure includes a plurality of transparent substrates in a stacked arrangement. Each transparent substrate includes a first reflective area and a second transflective. In each transparent substrate, the first area is to reflect a light beam incident thereon to the second area of one or more transparent substrate at downstream; the second area is to transmit part of a light beam received from one or more transparent substrate at upstream to an observation point, while reflecting rest of the light beam received from the one or more transparent substrate at upstream back to one or more transparent substrate at upstream; and the second area is further to at least partially reflect a light beam received from one or more transparent substrate at downstream back to one or more transparent substrate at downstream.
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公开(公告)号：US20190011883A1
公开(公告)日：2019-01-10
申请号：US15749331
申请日：2017-07-11
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Bingchuan SHI
CPC classification number: G03H1/12 , G03H1/02 , G03H1/0841 , G03H1/2249 , G03H1/2294 , G03H2001/0212 , G03H2001/0224 , G03H2001/2284 , G03H2001/2297 , G03H2240/42
Abstract: A hologram display apparatus and a hologram display method are provided. The hologram display apparatus includes a controller and a display device. The controller is configured to obtain plural grayscale values Gi of an image of a to-be-displayed object, generate plural display sub-image codes Qj according to the plurality of grayscale values Gi and transmit the plurality of display sub-image codes Qj to the display device, where i=1, 2, . . . , m, j=1, 2, . . . N, each of m and N is a positive integer. The display device is configured to generate and display plural sub-holograms according to the plurality of display sub-image codes, a quantity of the plurality of sub-holograms being equal to that of the plurality of display sub-image codes, such that the plurality of sub-holograms are superimposed to generate a hologram of the image of the to-be-displayed object in human eyes.
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公开(公告)号：US20220335907A1
公开(公告)日：2022-10-20
申请号：US17762010
申请日：2021-03-10
Applicant: BOE Technology Group Co., Ltd.
Inventor： Bingchuan SHI , Xitong MA , Tianmin RAO
Abstract: The present disclosure provides a dynamic local dimming display control method and apparatus, and a display device, and the method includes: determining a grayscale statistical function of each display partition according to a grayscale of an image to be displayed; obtaining a grayscale control parameter of each display partition, where the grayscale control parameter is related to an overflow rate; calculating a backlight control signal of each backlight partition according to the grayscale control parameter and the grayscale statistical function of each display partition; determining a compensated grayscale value according to the backlight control signal of each backlight partition and a backlight diffusion model; and performing image display according to the compensated grayscale value. The present disclosure can ensure that a pixel overflow rate in pixel compensation is not greater than a preset value.
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Patent Agency Ranking
16.发明申请公开(公告)号：US20220319376A1
公开(公告)日：2022-10-06
申请号：US17425788
申请日：2020-10-27
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Bingchuan SHI , Xingxing ZHAO
Abstract: There is provided a method for adjusting white balance of a spliced screen, which includes: acquiring an image to be analyzed; the image to be analyzed includes a picture, to be analyzed, displayed by a display screen to be adjusted, and the display screen to be adjusted is at least a portion of all display screens of the spliced screen; and determining a white balance adjustment mode of the display screen, to be adjusted, corresponding to the picture to be analyzed according to at least the picture to be analyzed in the image to be analyzed.
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公开(公告)号：US20220319234A1
公开(公告)日：2022-10-06
申请号：US17426110
申请日：2021-01-12
Applicant: BOE Technology Group Co., Ltd.
Inventor： Fengshuo HU , Bingchuan SHI , Rui ZHENG
Abstract: An object behavior analysis method includes: acquiring multiple frames of images to be processed from a video of a target scene; detecting at least one first-type object in any frame of image to be processed, and determining key point information of any first-type object; determining key point merging information of any first-type object in a present image according to key point information of first-type objects in the present image and a reference image group, the present image being any frame of image to be processed during present processing, and the reference image group including at least one frame of image to be processed before the present image; and determining a behavior analysis result of any first-type object in the present image according to the key point merging information of the first-type object in the present image.
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公开(公告)号：US20220058422A1
公开(公告)日：2022-02-24
申请号：US17420114
申请日：2020-09-07
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Yue LI , Jibo ZHAO , Guangwei HUANG , Ruibin XUE , Bingchuan SHI
Abstract: A character recognition method includes: performing feature extraction on an image to be recognized to obtain a first feature map; processing the first feature map to at least obtain N first candidate carrier detection boxes, each first candidate carrier detection box being configured to outline a region of a character carrier; screening the N first candidate carrier detection boxes to obtain K first target carrier detection boxes; performing a feature extraction on the first feature map to obtain a second feature map; processing the second feature map to obtain L first candidate character detection boxes, each first candidate character detection box being configured to outline a region containing at least one character; screening the L first candidate character detection boxes to obtain J first target character detection boxes; and recognizing characters in the J first target character detection boxes to obtain J target character informations.
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公开(公告)号：US20210034012A1
公开(公告)日：2021-02-04
申请号：US16332327
申请日：2018-07-25
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Bingchuan SHI
Abstract: Disclosed are a holographic display method and a holographic display device. The holographic display method includes: acquiring an area of Nth diffraction order corresponding to an eye position; according to the area of Nth diffraction order, calculating a holographic complex amplitude distribution corresponding to a window of Nth diffraction order to obtain window hologram information, a function of the holographic complex amplitude distribution being expressed by C(m, n)=A(m, n)*exp[−iφ(m, n)/N]; encoding the window hologram information; and according to the encoded window hologram information, loading the encoded window hologram information in the area of Nth diffraction order to display a hologram.
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公开(公告)号：US20210020059A1
公开(公告)日：2021-01-21
申请号：US16929011
申请日：2020-07-14
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Ruibin XUE , Guangwei HUANG , Jibo ZHAO , Bingchuan SHI , Yue LI
Abstract: The present disclosure provides an answer evaluation method, an answer evaluation system, an electronic device, and a medium. The method comprises: acquiring an answer image, for a test paper answered by a use; classifying the answer image based on a pre-trained test question classification model, so as to obtain an objective question answer area and a subjective question answer area; identifying at least one objective question in the objective question answer area and an objective question answers for each of the at least one objective question; identifying at least one subjective question in the subjective question answer area and a subjective question answers for each of the at least one subjective question; and determining a total score value of the test paper based on the objective question, the objective question answer, the subjective question and the subjective question answer.
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