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21. 发明申请

US20180031921A1 Techniques for Dual Modulation with Light Conversion 审中-公开
公开(公告)号：US20180031921A1
公开(公告)日：2018-02-01
申请号：US15726199
申请日：2017-10-05
申请人： Dolby Laboratories Licensing Corporation
发明人： Chun Chi WAN , Ajit NINAN
IPC分类号： G02F1/1335 , G09G3/34
CPC分类号： G02F1/133609 , G02F2001/133601 , G02F2001/133614 , G02F2202/36 , G09G3/3426 , G09G2320/0233 , G09G2320/0242 , G09G2320/041 , G09G2320/0646
摘要： Techniques for driving a dual modulation display include generating backlight drive signals to drive individually-controllable illumination sources. The illumination sources emit first light onto a light conversion layer. The light conversion layer converts the first light, such as blue or ultraviolet light, into second light, such as white light. The light conversion layer can include quantum dot materials. Liquid crystal display (LCD) modulation drive signals are generated to determine transmission of the second light through individual color subpixels of the display. These LCD modulation drive signals can be adjusted based on one or more light field simulations to account for non-uniform, spatial color shifts. Alternatively, one or more light field simulations based on a uniformity assumption determine intermediate LCD modulation drive signals. A compensation field simulation, using backlight drive signals, is then used to adjust the intermediate LCD modulation drive signal for color correction.

22. 发明申请

US20180006011A1 Pixel Tile Structures and Layouts 审中-公开
公开(公告)号：US20180006011A1
公开(公告)日：2018-01-04
申请号：US15542854
申请日：2016-01-11
申请人： Dolby Laboratories Licensing Corporation
发明人： Ajit NINAN , Tyrome Y. BROWN
IPC分类号： H01L27/02 , H01L27/15 , H01L33/00 , H01L27/32
摘要： An overall displacement tolerance applicable to each pixel tile in a plurality of pixel tiles to be used as parts of an image rendering surface is determined. Each pixel tile in the plurality of pixel tiles comprises a plurality of sub-pixels. Random displacements are generated in each pixel tile in the plurality of pixel tiles based on the overall displacement tolerance. The plurality of image rendering tiles with the random displacements are combined into the image rendering surface.

23. 发明申请

US20170162107A1 Display Light Source Timing 审中-公开
公开(公告)号：US20170162107A1
公开(公告)日：2017-06-08
申请号：US15366319
申请日：2016-12-01
申请人： Dolby Laboratories Licensing Corporation
发明人： Ajit NINAN , Chun Chi WAN
IPC分类号： G09G3/20
CPC分类号： G09G3/3426 , G09G2320/0633 , G09G2320/064 , G09G2320/0653 , G09G2360/16
摘要： A first and a second light valve control values are derived for a first and a second frames, respectively, in a specific region of a display panel based on image data of the first and second frames. It is determined whether a difference between the first and second light valve control values exceeds a light valve control threshold. If so, a light source driving waveform is constructed to comprise a sequence of light source control pulses for controlling one or more light sources designated to illuminate the specific region of the display panel. The sequence of light source control pulses is constrained to start at a start time plus a transition time interval. The transition time interval allows light valves in the specific region of the display panel to complete a transition between the first and second light valve control values.

24. 发明申请

US20160353123A1 Techniques for Encoding, Decoding and Representing High Dynamic Range Images 审中-公开
标题翻译：用于编码，解码和表示高动态范围图像的技术
公开(公告)号：US20160353123A1
公开(公告)日：2016-12-01
申请号：US15110061
申请日：2015-01-06
申请人： DOLBY LABORATORIES LICENSING CORPORATION
发明人： Ajit NINAN
IPC分类号： H04N19/44 , H04N19/186 , H04N19/184 , G06F21/60 , H04N19/467
CPC分类号： H04N19/44 , G06F21/602 , H04N5/2355 , H04N19/184 , H04N19/186 , H04N19/36 , H04N19/467
摘要： Techniques for high dynamic range image processing are presented. Base layer data, first checksum parameter, and residual ratio data for a high dynamic range (HDR) image are each received. A second checksum parameter is computed for the base layer data based upon the first SOF after the last APP 11 marker segment and includes all following bytes up to and including the EOI marker. The first and second checksum parameters are compared to determine if base layer has been altered.
摘要翻译：介绍了高动态范围图像处理技术。分别接收高动态范围（HDR）图像的基层数据，第一校验和参数和残留比数据。基于最后一个APP 11标记段之后的第一个SOF，为基础层数据计算第二校验和参数，并包括直到并包括EOI标记的所有后续字节。比较第一和第二校验和参数以确定基层是否已被改变。

25. 发明申请

US20160282537A1 UNIFORMLY LIT LIGHT GUIDES 有权
标题翻译：均匀的光指导
公开(公告)号：US20160282537A1
公开(公告)日：2016-09-29
申请号：US15036391
申请日：2014-11-12
申请人： DOLBY LABORATORIES LICENSING CORPORATION
发明人： Ajit NINAN , Chun Chi WAN
IPC分类号： F21V8/00 , G08B5/36
CPC分类号： G02B6/0025 , G02B6/0028 , G02B6/0068 , G02B6/0075
摘要： An apparatus comprising a light source (110), one or more light guides (104), and a light diffuser (102) having an integration chamber (114) surrounded by one or more light diffusive areas (108). The one or more light diffusive areas are configured with one or more first openings as one or more ingress areas (112) to receive light from the light source and one or more second openings as one or more egress areas (106) to provide light to the one or more light guides. For illuminating visual indicators with uniform light.
摘要翻译：一种包括光源（110），一个或多个光导（104）和具有由一个或多个光扩散区域（108）包围的积分室（114）的光扩散器（102）的装置。一个或多个光扩散区域被配置有一个或多个第一开口作为一个或多个入口区域（112），以接收来自光源的光和作为一个或多个出口区域（106）的一个或多个第二开口，以提供光一个或多个光导。用于照亮具有均匀光线的视觉指示器。

26. 发明申请

US20220232269A1 FOVIATION AND HDR 有权
公开(公告)号：US20220232269A1
公开(公告)日：2022-07-21
申请号：US17714574
申请日：2022-04-06
申请人： Dolby Laboratories Licensing Corporation
发明人： Ajit NINAN
IPC分类号： H04N21/2343 , H04N21/442
摘要： First foviated images are streamed to a streaming client. The first foviated images with first image metadata sets are used to generate first display mapped images for rendering to a viewer at first time points. View direction data is collected and used to determine a second view direction of the viewer at a second time point. A second foviated image and a second image metadata set are generated from a second HDR source image in reference to the second view direction of the viewer and used to generate a second display mapped image for rendering to the viewer at the second time point. The second image metadata set comprises a display management metadata portions for adapting a focal-vision and peripheral-vision image portions to corresponding image portions in the second display mapped image. The focal-vision display management metadata portion is generated with a predicted light adaptation level of the viewer for the second time point. The second foviated image and the second image metadata set are transmitted to the video streaming client.

27. 发明申请

US20210373346A1 MODULAR AND DETACHABLE WEARABLE DEVICES FOR AR/VR/MR 有权
公开(公告)号：US20210373346A1
公开(公告)日：2021-12-02
申请号：US17347422
申请日：2021-06-14
申请人： DOLBY LABORATORIES LICENSING CORPORATION
发明人： Ajit NINAN , Neil MAMMEN
IPC分类号： G02B27/01 , G06F1/16 , G06F3/01
摘要： A wearable device for augmented media content experiences can be formed with a mountable physical structure that has removably mountable positions and component devices that are removably mounted through the removably mountable positions. The component devices can be specifically selected based on a specific type of content consumption environment in which the wearable device is to operate. The mountable physical structure may be subject to a device washing process to which the component devices are not subject to, after the wearable device including the mountable physical structure and the component devices is used by a viewer in a content consumption session in the specific type of content consumption environment, so long as the component devices are subsequently removed from the mountable physical structure.

28. 发明申请

US20210314670A1 CONTENT BASED STREAM SPLITTING OF VIDEO DATA 有权
公开(公告)号：US20210314670A1
公开(公告)日：2021-10-07
申请号：US16336628
申请日：2017-09-18
申请人： Dolby Laboratories Licensing Corporation
发明人： Chaitanya ATLURU , Ajit NINAN
IPC分类号： H04N21/4728 , H04N21/84 , H04N21/218 , H04N21/431 , H04N21/4402 , H04N13/117
摘要： Scenes in video images are identified based on image content of the video images. Regional cross sections of the video images are determined based on the scenes in the video images. Image portions of the video images in the regional cross sections are encoded into multiple video sub-streams at multiple different spatiotemporal resolutions. An overall video stream that includes the multiple video sub-streams is transmitted to a streaming client device.

29. 发明申请

US20210195212A1 PREDICTING AND VERIFYING REGIONS OF INTEREST SELECTIONS 有权
公开(公告)号：US20210195212A1
公开(公告)日：2021-06-24
申请号：US17198085
申请日：2021-03-10
申请人： Dolby Laboratories Licensing Corporation
发明人： Chaitanya ATLURU , Ajit NINAN
IPC分类号： H04N19/167 , G06K9/00 , G06K9/32 , H04N19/597 , H04N19/162
摘要： Video images are rendered in viewports of content viewers. Each content viewer views video images through a respective viewport in the viewports. Spatial locations in the video images to which foveal visions of the content viewers are directed are determined. ROIs in the video images are identified based on the spatial locations in the video images.

30. 发明申请

US20200036993A1 Techniques for Encoding, Decoding and Representing High Dynamic Range Images 审中-公开
公开(公告)号：US20200036993A1
公开(公告)日：2020-01-30
申请号：US16593583
申请日：2019-10-04
申请人： DOLBY LABORATORIES LICENSING CORPORATION
发明人： Ajit NINAN
IPC分类号： H04N19/44 , H04N19/36 , H04N5/235 , H04N19/184 , H04N19/467 , H04N19/186 , G06F21/60
摘要： Techniques for high dynamic range image processing are presented. Base layer data, first checksum parameter, and residual ratio data for a high dynamic range (HDR) image are each received. A second checksum parameter is computed for the base layer data based upon the first SOF after the last APP11 marker segment and includes all following bytes up to and including the EOI marker. The first and second checksum parameters are compared to determine if base layer has been altered.

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