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    Displaying images on local-dimming displays
    71.
    发明授权
    Displaying images on local-dimming displays 有权

    公开(公告)号：US10121454B2

    公开(公告)日：2018-11-06

    申请号：US15435677

    申请日：2017-02-17

    Applicant: Dolby Laboratories Licensing Corporation

    Inventor： Ajit Ninan ,  Wenhui Jia

    IPC: G09G3/36 ,  G09G5/10 ,  G06T5/00

    Abstract: Displays, display components, image and video processing apparatus and related methods are described. A method for driving local-dimming displays comprises generating control values for driving pixels of a spatial light modulator from one image data component and generating control values for driving backlight elements from a second image data component. The first and second image data components may respectively comprise a tone map and a ratio image. Control values for the spatial light modulator and/or backlight may be obtained using cost effective hardware.

    Ambient black level
    74.
    发明授权
    Ambient black level 有权

    公开(公告)号：US09324278B2

    公开(公告)日：2016-04-26

    申请号：US14788396

    申请日：2015-06-30

    Applicant: Dolby Laboratories Licensing Corporation

    Inventor： Ajit Ninan ,  Wenhui Jia

    IPC: G09G3/34

    CPC classification number: G09G3/3406 ,  G09G3/3426 ,  G09G2320/0238 ,  G09G2320/0626 ,  G09G2320/0646 ,  G09G2320/066 ,  G09G2360/144

    Abstract: Techniques for operating a display system in a wide range of ambient light conditions are provided. An intensity of ambient light on a display panel may be detected. The display panel may be illuminated by light sources in addition to the ambient light. An individual light source may be individually settable to an individual light output level. If it is determined that the luminance level of the ambient light is above a minimum ambient luminance threshold, an ambient black level may be calculated using the intensity of ambient light. Light output levels of one or more of the light sources may be elevated to first light output levels. Here, the one or more light sources may be designated to illuminate one or more dark portions of an image. The first light output levels may create a new black level equaling the determined ambient black level.

    Quantum Dot Modulation For Displays
    75.
    发明申请
    Quantum Dot Modulation For Displays 有权
    量子点调制显示

    公开(公告)号：US20150184814A1

    公开(公告)日：2015-07-02

    申请号：US14659931

    申请日：2015-03-17

    Applicant: DOLBY LABORATORIES LICENSING CORPORATION

    Inventor： Ajit Ninan

    IPC: F21K99/00

    CPC classification number: F21K9/64 ,  B82Y20/00 ,  F21V9/08 ,  G02B26/08 ,  G02B27/2207 ,  G02B27/2264 ,  G09G3/001 ,  G09G3/003 ,  G09G3/02 ,  G09G3/025 ,  G09G3/22 ,  G09G3/34 ,  G09G5/14 ,  G09G2310/0235 ,  H04N9/3129

    Abstract: Modulated light sources are described. A modulated light source may have first light sources that are configured to emit first light, which has first color components that occupy a range that is beyond one or more prescribed ranges of light wavelengths. The modulated light source may also have a light converter that is configured to be illuminated by the first light. The light converter converts the first light into second light. The second light has one or more second color components that are within the one or more prescribed ranges of light wavelengths. Strengths of the one or more second color components in the second light are monitored and regulated to produce a particular point within a specific color gamut.

    Abstract translation: 描述了调制光源。 调制光源可以具有被配置为发射第一光的第一光源，其具有占据超过一个或多个规定范围的光波长的范围的第一颜色分量。 调制光源还可以具有被配置为被第一光照射的光转换器。 光转换器将第一光转换成第二光。 第二个光具有在一个或多个规定的光波长范围内的一个或多个第二颜色分量。 监测和调节第二光中的一个或多个第二颜色分量的强度以产生特定色域内的特定点。

    Quantum Dot/Remote Phosphor Display System Improvements
    76.
    发明申请
    Quantum Dot/Remote Phosphor Display System Improvements 有权
    量子点/远程荧光体显示系统的改进

    公开(公告)号：US20140078716A1

    公开(公告)日：2014-03-20

    申请号：US14030896

    申请日：2013-09-18

    Applicant: Dolby Laboratories Licensing Corporation

    Inventor： Ajit Ninan ,  Chun Chi Wan ,  Timo Kunkel ,  Michael E. Miller

    IPC: F21V9/10 ,  F21V9/08

    CPC classification number: F21V9/40 ,  B82Y20/00 ,  F21V9/08 ,  F21V9/30 ,  G02B5/201 ,  G02B5/22 ,  G02F1/133514 ,  G02F1/133516 ,  G02F1/133617 ,  G02F2001/133614 ,  G02F2202/046 ,  H01L27/322 ,  H01L51/56 ,  H01L2251/5369 ,  H04N13/334 ,  Y10S977/774

    Abstract: A display system comprises light sources configured to emit first light with a first spectral power distribution; light regeneration layers configured to be stimulated by the first light and to convert at least a portion of the first light and recycled light into second light, the second light comprising (a) primary spectral components that correspond to primary colors and (b) secondary spectral components that do not correspond to the primary colors; and notch filter layers configured to receive a portion of the second light and to filter out the secondary spectral components from the portion of the second light. The portion of the second light can be directed to a viewer of the display system and configured to render images viewable to the viewer.

    Abstract translation: 显示系统包括被配置为以第一光谱功率分布发射第一光的光源; 光再生层被配置为被第一光刺激并且将至少一部分第一光和再循环光转换成第二光，第二光包括（a）对应于原色的主光谱分量和（b）二次光谱 不对应于原色的组件; 以及陷波滤波器层，被配置为接收所述第二光的一部分并且从所述第二光的所述部分滤出所述次级光谱分量。 第二光的部分可以被引导到显示系统的观看者并且被配置为使得可以向观看者观看图像。

    Encoding, Decoding, and Representing High Dynamic Range Images
    78.
    发明申请
    Encoding, Decoding, and Representing High Dynamic Range Images 有权

    公开(公告)号：US20130071022A1

    公开(公告)日：2013-03-21

    申请号：US13675643

    申请日：2012-11-13

    Applicant: Dolby Laboratories Licensing Corporation

    Inventor： Wenhui Jia ,  Ajit Ninan ,  Arkady Ten ,  Gregory John Ward

    IPC: G06T9/00

    CPC classification number: G06T9/00 ,  H04N9/67 ,  H04N9/77

    Abstract: Techniques are provided to encode and decode image data comprising a tone mapped (TM) image with HDR reconstruction data in the form of luminance ratios and color residual values. In an example embodiment, luminance ratio values and residual values in color channels of a color space are generated on an individual pixel basis based on a high dynamic range (HDR) image and a derivative tone-mapped (TM) image that comprises one or more color alterations that would not be recoverable from the TM image with a luminance ratio image. The TM image with HDR reconstruction data derived from the luminance ratio values and the color-channel residual values may be outputted in an image file to a downstream device, for example, for decoding, rendering, and/or storing. The image file may be decoded to generate a restored HDR image free of the color alterations.

    COMPRESSION OF MULTIPLANE IMAGES
    79.
    发明申请
    COMPRESSION OF MULTIPLANE IMAGES 有权

    公开(公告)号：US20250063208A1

    公开(公告)日：2025-02-20

    申请号：US18805864

    申请日：2024-08-15

    Applicant: DOLBY LABORATORIES LICENSING CORPORATION

    Inventor： Vijay Sundaram ,  Ajit Ninan

    IPC: H04N19/85 ,  H04N19/119 ,  H04N19/136 ,  H04N19/172 ,  H04N19/182 ,  H04N19/463

    Abstract: Methods and apparatus for compressing and decompressing MPI videos. According to an example embodiment, a method of compressing an MPI video includes splitting the MPI video into first and second frame sequences including texture and alpha frames of multiplane images, respectively. The method further includes applying sets of preprocessing operations to convert the first frame sequence into a third frame sequence and to convert the second frame sequence into a fourth frame sequence. Example preprocessing operations include, but are not limited to, applying a fill process, thresholding RGB channels based on the corresponding alpha channel, blurring images, computing pixelwise difference values of frames, and computing pixelwise product values of frames. The method also includes applying video compression to the second frame sequence and to the fourth frame sequence.

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