公开(公告)号：US20140307011A1

公开(公告)日：2014-10-16

申请号：US14356944

申请日：2012-11-07

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： Ajit Ninan ,  Qifan Huang ,  Greg Maturi ,  Neil Mammen ,  James Kronrod

IPC: G06F1/32 ,  G09G3/36

CPC classification number: G06F1/3265 ,  G09G3/2074 ,  G09G3/342 ,  G09G3/36 ,  G09G2320/064 ,  G09G2320/0646 ,  G09G2320/0653 ,  G09G2330/025

Abstract: Techniques are provided to provide various pulse width modulation (PWM) schemes to embodiments of dual modulator display systems that may comprise a backlight of individually addressable and controllable light emitters. The backlight provides illumination to a light modulator for further conditioning of the light to be presented to a viewer. The backlight may be striped and each stripe is assigned a PWM scheme that effectively increases the bit depth of the controller for each stripe. The display system may allow a better matching of PWM periods to LCD frame rates to reduce visual artifacts. In another embodiment, the display system may detect a small bright feature to be rendered in the image data and, with a pre-assignment of light emitters to different partitions, the backlight controller may drive a subset of the light emitters according to the partitions.

Abstract translation: 提供了技术来向双调制器显示系统的实施例提供各种脉冲宽度调制（PWM）方案，所述双调制器显示系统可以包括单独可寻址和可控光发射器的背光。 背光为光调制器提供照明，用于进一步调节要呈现给观看者的光。 背光可以是条纹的，并且每个条带被分配有PWM方案，其有效地增加每个条带的控制器的位深度。 显示系统可以允许PWM周期与LCD帧速率的更好匹配以减少视觉伪影。 在另一个实施例中，显示系统可以检测要在图像数据中渲染的小的亮特征，并且通过将光发射器预先分配到不同的分区，背光控制器可以根据分区来驱动发光体的子集。

公开(公告)号：US20150256752A1

公开(公告)日：2015-09-10

申请号：US14710856

申请日：2015-05-13

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： Ajit Ninan ,  Gregory John Ward ,  Qifan Huang

IPC: H04N5/232 ,  G06K9/46 ,  H04N5/222 ,  H04N5/265 ,  H04N5/235

CPC classification number: H04N5/23245 ,  G06K9/4652 ,  H04N5/222 ,  H04N5/2353 ,  H04N5/2355 ,  H04N5/265 ,  H04N5/3456 ,  H04N9/045

Abstract: Techniques are described to combine image data from multiple images with different exposures into a relatively high dynamic range image. A first image of a scene may be generated with a first operational mode of an image processing system. A second image of the scene may be generated with a second different operational mode of the image processing system. The first image may be of a first spatial resolution, while the second image may be of a second spatial resolution. For example, the first spatial resolution may be higher than the second spatial resolution. The first image and the second image may be combined into an output image of the scene. The output image may be of a higher dynamic range than either of the first image and the second image and may be of a spatial resolution higher than the second spatial resolution.

Abstract translation: 描述技术来将来自多个图像的图像数据与不同曝光组合成相对高的动态范围图像。 可以利用图像处理系统的第一操作模式来生成场景的第一图像。 可以利用图像处理系统的第二不同操作模式来生成场景的第二图像。 第一图像可以是第一空间分辨率，而第二图像可以是第二空间分辨率。 例如，第一空间分辨率可以高于第二空间分辨率。 第一图像和第二图像可以被组合成场景的输出图像。 输出图像可以具有比第一图像和第二图像中的任一个更高的动态范围，并且可以具有高于第二空间分辨率的空间分辨率。

公开(公告)号：US09549123B2

公开(公告)日：2017-01-17

申请号：US14710856

申请日：2015-05-13

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Ajit Ninan ,  Gregory John Ward ,  Qifan Huang

IPC: H04N5/232 ,  H04N5/235 ,  H04N5/345 ,  H04N9/04 ,  H04N5/222 ,  H04N5/265 ,  G06K9/46

CPC classification number: H04N5/23245 ,  G06K9/4652 ,  H04N5/222 ,  H04N5/2353 ,  H04N5/2355 ,  H04N5/265 ,  H04N5/3456 ,  H04N9/045

Abstract: Techniques are described to combine image data from multiple images with different exposures into a relatively high dynamic range image. A first image of a scene may be generated with a first operational mode of an image processing system. A second image of the scene may be generated with a second different operational mode of the image processing system. The first image may be of a first spatial resolution, while the second image may be of a second spatial resolution. For example, the first spatial resolution may be higher than the second spatial resolution. The first image and the second image may be combined into an output image of the scene. The output image may be of a higher dynamic range than either of the first image and the second image and may be of a spatial resolution higher than the second spatial resolution.

Abstract translation: 描述技术来将来自多个图像的图像数据与不同曝光组合成相对高的动态范围图像。 可以利用图像处理系统的第一操作模式来生成场景的第一图像。 可以利用图像处理系统的第二不同操作模式来生成场景的第二图像。 第一图像可以是第一空间分辨率，而第二图像可以是第二空间分辨率。 例如，第一空间分辨率可以高于第二空间分辨率。 第一图像和第二图像可以被组合成场景的输出图像。 输出图像可以具有比第一图像和第二图像中的任一个更高的动态范围，并且可以具有高于第二空间分辨率的空间分辨率。