公开(公告)号：US10123002B2

公开(公告)日：2018-11-06

申请号：US15825549

申请日：2017-11-29

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Gregory John Ward ,  Robin Atkins

IPC: H04N13/363 ,  G02F1/1333 ,  H04N9/31 ,  H04N13/337 ,  H04N13/398

Abstract: A projection display system includes a spatial modulator that is controlled to compensate for flare in a lens of the projector. The spatial modulator increases achievable intra-frame contrast and facilitates increased peak luminance without unacceptable black levels. Some embodiments provide 3D projection systems in which the spatial modulator is combined with a polarization control panel.

公开(公告)号：US10056042B2

公开(公告)日：2018-08-21

申请号：US15572092

申请日：2016-05-11

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： Robin Atkins ,  Gregory John Ward ,  Samir N. Hulyalkar ,  Guan-Ming Su ,  Sheng Qu

IPC: G09G3/34 ,  G06K9/00

CPC classification number: G09G3/3406 ,  G06K9/00711 ,  G09G3/34 ,  G09G3/36 ,  G09G2310/0235 ,  G09G2320/0233 ,  G09G2320/0247 ,  G09G2320/0271 ,  G09G2320/0276 ,  G09G2320/064 ,  G09G2320/0646 ,  G09G2320/0653 ,  G09G2320/066 ,  G09G2320/103 ,  G09G2340/16 ,  G09G2360/16 ,  G09G2370/04

Abstract: Systems and methods are disclosed for filtering metadata to be used in display management. Given an input video stream and input metadata comprising at least one of minimum, average, or maximum luminance values of the video frames in the video stream, values of a function of the input metadata are filtered using a temporal filter to generate filtered metadata, wherein the filtering is based only on metadata for input frames in the same scene. Methods for temporal filtering based on an exponential moving average filter or a look-ahead sliding window filter are presented, including methods for scene-change detection using the input metadata.

公开(公告)号：US20180190215A1

公开(公告)日：2018-07-05

申请号：US15905085

申请日：2018-02-26

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Lorne A. Whitehead ,  Gregory John Ward ,  Louis D. Silverstein ,  Helge Seetzen

IPC: G09G3/36 ,  G09G3/34 ,  G09G3/32

CPC classification number: G09G3/3607 ,  G09G3/32 ,  G09G3/3406 ,  G09G3/3413 ,  G09G3/3426 ,  G09G3/3433 ,  G09G3/3611 ,  G09G2320/0646 ,  G09G2320/0666 ,  G09G2360/16

Abstract: Dual modulator displays are disclosed incorporating a phosphorescent plate interposed in the optical path between a light source modulation layer and a display modulation layer. Spatially modulated light output from the light source modulation layer impinges on the phosphorescent plate and excites corresponding regions of the phosphorescent plate which in turn emit light having different spectral characteristics than the light output from the light source modulation layer. Light emitted from the phosphorescent plate is received and further modulated by the display modulation layer to provide the ultimate display output.

公开(公告)号：US09911389B2

公开(公告)日：2018-03-06

申请号：US15298094

申请日：2016-10-19

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Lorne A. Whitehead ,  Gregory John Ward ,  Louis D. Silverstein ,  Helge Seetzen

IPC: G09G3/34 ,  G09G3/36 ,  G09G3/32

CPC classification number: G09G3/3607 ,  G09G3/32 ,  G09G3/3406 ,  G09G3/3413 ,  G09G3/3426 ,  G09G3/3433 ,  G09G3/3611 ,  G09G2320/0646 ,  G09G2320/0666 ,  G09G2360/16

Abstract: Dual modulator displays are disclosed incorporating a phosphorescent plate interposed in the optical path between a light source modulation layer and a display modulation layer. Spatially modulated light output from the light source modulation layer impinges on the phosphorescent plate and excites corresponding regions of the phosphorescent plate which in turn emit light having different spectral characteristics than the light output from the light source modulation layer. Light emitted from the phosphorescent plate is received and further modulated by the display modulation layer to provide the ultimate display output.

公开(公告)号：US09654781B2

公开(公告)日：2017-05-16

申请号：US14997950

申请日：2016-01-18

Applicant: Dolby Laboratories Licensing Corporation

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

IPC: H04N19/136 ,  H04N9/77 ,  H04N5/235 ,  H04N19/169 ,  G06T9/00 ,  H04N9/67 ,  H04N19/50 ,  H04N19/30 ,  H04N19/186 ,  H04N19/124 ,  H04N19/44 ,  H04N19/70

CPC classification number: H04N19/124 ,  G06T9/00 ,  H04N5/2355 ,  H04N9/67 ,  H04N9/77 ,  H04N19/136 ,  H04N19/169 ,  H04N19/182 ,  H04N19/186 ,  H04N19/30 ,  H04N19/44 ,  H04N19/50 ,  H04N19/70

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.

公开(公告)号：US09645386B2

公开(公告)日：2017-05-09

申请号：US13689461

申请日：2012-11-29

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Terence Ka Wing Lau ,  William Brent Wilson ,  Robin Atkins ,  Henry Hang Kei Ip ,  Gregory John Ward ,  Douglas Campbell ,  Neil W. Messmer

IPC: G02B26/02 ,  G02B26/00 ,  H05B37/02 ,  H04N5/225 ,  H04N5/238 ,  G09G3/34 ,  G09G5/10

CPC classification number: G02B26/02 ,  G02B26/00 ,  G09G3/3406 ,  G09G3/346 ,  G09G5/10 ,  G09G2310/0235 ,  G09G2320/0626 ,  G09G2320/066 ,  G09G2320/0666 ,  G09G2320/0693 ,  G09G2360/144 ,  G09G2360/145 ,  G09G2380/08 ,  H04N5/2254 ,  H04N5/238 ,  H05B37/02

Abstract: MEMS shutters are applied in displays and imaging devices. In a display, sensors may detect light from a light source that is back-reflected by a MEMS shutter and/or ambient light that enters through the MEMS shutter. The sensors may be used to monitor performance of the light source and/or ambient lighting conditions. In an imaging device, MEMS shutters may be applied to selectively block light to prevent overexposed areas within an image.

公开(公告)号：US09626921B2

公开(公告)日：2017-04-18

申请号：US14950010

申请日：2015-11-24

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Gregory John Ward ,  Robin Atkins

IPC: G09G3/36 ,  G09G3/00 ,  H04N9/31 ,  G09G3/34

CPC classification number: H04N13/363 ,  G02F1/1333 ,  G02F2203/50 ,  G09G3/002 ,  G09G3/348 ,  G09G3/3611 ,  G09G2320/0271 ,  G09G2360/16 ,  H04N9/3126 ,  H04N9/3182 ,  H04N9/3188 ,  H04N13/337 ,  H04N13/398

Abstract: A projection display system includes a spatial modulator that is controlled to compensate for flare in a lens of the projector. The spatial modulator increases achievable intra-frame contrast and facilitates increased peak luminance without unacceptable black levels. Some embodiments provide 3D projection systems in which the spatial modulator is combined with a polarization control panel.

公开(公告)号：US20160345031A1

公开(公告)日：2016-11-24

申请号：US15228370

申请日：2016-08-04

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Gregory John Ward ,  Maryann Simmons

IPC: H04N19/98 ,  H04N19/186 ,  H04N19/182 ,  G06T5/00

CPC classification number: H04N19/98 ,  G06T5/007 ,  G06T5/009 ,  G06T2207/10016 ,  G06T2207/10024 ,  G06T2207/20012 ,  G06T2207/20208 ,  G09G5/10 ,  H04N1/3871 ,  H04N19/126 ,  H04N19/182 ,  H04N19/184 ,  H04N19/186 ,  H04N19/30 ,  H04N19/463

Abstract: A data structure defining a high dynamic range image comprises a tone map having a reduced dynamic range and HDR information. The high dynamic range image can be reconstructed from the tone map and theHDR information. The data structure can be backwards compatible with legacy hardware or software viewers. The data structure may comprise a JFIF file having the tone map encoded as a JPEG image with the HDR information in an application extension or comment field of the JFIF file, or a MPEG file having the tone map encoded as a MPEG image with theHDR information in a video or audio channel of the MPEG file. Apparatus and methods for encoding or decoding the data structure may apply pre- or post correction to compensate for lossy encoding of the high dynamic range information.

Abstract translation: MPEG文件的视频或音频通道中的HDR信息。 用于对数据结构进行编码或解码的装置和方法可以在校正前或之后应用以补偿高动态范围信息的有损编码。

公开(公告)号：US09269312B2

公开(公告)日：2016-02-23

申请号：US14148060

申请日：2014-01-06

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Lorne A. Whitehead ,  Helge Seetzen ,  Gregory John Ward ,  Wolfgang Heidrich

IPC: G09G5/00 ,  G09G3/36 ,  G09G3/34

CPC classification number: G09G3/3426 ,  G06T3/4007 ,  G09G3/36 ,  G09G2320/0238 ,  G09G2340/0428

Abstract: A method for estimating an effective luminance pattern representing a distribution of projected light in a display apparatus involves determining driving values for one or more light sources arranged to project light. The light sources are solid-state light sources such as light-emitting diodes in some embodiments. The method determines an effective luminance pattern for the projected light by determining contributions to the effective luminance pattern for different components of a point spread function and then combining the contributions of the components the effective luminance pattern to yield an estimated effective luminance pattern.

Abstract translation: 用于估计表示投影​​光在显示装置中的分布的有效亮度图案的方法包括确定布置成投射光的一个或多个光源的驱动值。 在一些实施例中，光源是诸如发光二极管的固态光源。 该方法通过确定对点扩散函数的不同分量的有效亮度图案的贡献，然后将分量的贡献合成有效亮度图案以产生估计的有效亮度图案，来确定投影光的有效亮度图案。

公开(公告)号：US09036042B2

公开(公告)日：2015-05-19

申请号：US13938795

申请日：2013-07-10

Applicant: Dolby Laboratories Licensing Corporation

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

IPC: H04N5/228 ,  H04N9/73 ,  H04N5/46 ,  H04N11/02 ,  G06T9/00 ,  H04N9/67 ,  H04N9/77 ,  H04N5/235 ,  H04N19/169

CPC classification number: H04N19/124 ,  G06T9/00 ,  H04N5/2355 ,  H04N9/67 ,  H04N9/77 ,  H04N19/136 ,  H04N19/169 ,  H04N19/182 ,  H04N19/186 ,  H04N19/30 ,  H04N19/44 ,  H04N19/50 ,  H04N19/70

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.

Abstract translation: 提供了技术来编码和解码包括色调映射（TM）图像的图像数据，其中HDR重建数据以亮度比和颜色残余值的形式。 在一个示例实施例中，基于高动态范围（HDR）图像和包括一个或多个的图像的导数色调映射（TM）图像，在各个像素的基础上产生颜色空间的颜色通道中的亮度比值和残差值 不能从具有亮度比图像的TM图像中恢复的颜色变化。 可以将从亮度比值和颜色通道残差导出的具有HDR重建数据的TM图像输出到图像文件到下游装置，例如用于解码，渲染和/或存储。 图像文件可以被解码以生成没有颜色变化的恢复的HDR图像。