公开(公告)号：WO2009003043A2

公开(公告)日：2008-12-31

申请号：PCT/US2008/068198

申请日：2008-06-25

Applicant: APPLE INC. ,  BARNHOEFER, Ulrich T. ,  CORLETT, Barry J. ,  ALESSI, Victor E. ,  YAO, Wei H. ,  CHEN, Wei

Inventor： BARNHOEFER, Ulrich T. ,  CORLETT, Barry J. ,  ALESSI, Victor E. ,  YAO, Wei H. ,  CHEN, Wei

IPC: G09G3/34 ,  G09G3/36 ,  H04N5/44

CPC classification number: G09G3/3611 ,  G09G3/3406 ,  G09G2310/0232 ,  G09G2320/0247 ,  G09G2320/0271 ,  G09G2320/0606 ,  G09G2320/0626 ,  G09G2320/0646 ,  G09G2320/0653 ,  G09G2320/0673 ,  G09G2330/021 ,  G09G2340/16 ,  G09G2360/16 ,  Y10S348/913

Abstract: Embodiments of a system that includes one or more integrated circuits are described. During operation of the system, an interface in the one or more integrated circuits receives video signals associated with a video image and a brightness setting of a light source which illuminates a display that displays the video image. Next, an extraction circuit, which is electrically coupled to the input interface, calculates a brightness metric associated with the video image based on the received video signals. Then, an analysis circuit, electrically coupled to the extraction circuit, analyzes the brightness metric to identify one or more subsets of the video image, and an intensity circuit, electrically coupled to the analysis circuit, determines an intensity setting of the light source based on the brightness setting and a first portion of the brightness metric associated with one of the subsets of the video image. Note that this subset of the video image includes spatially varying visual information in the video image. Moreover, an output interface, electrically coupled to the intensity circuit, outputs the intensity setting of the light source.

Abstract translation: 描述包括一个或多个集成电路的系统的实施例。 在系统操作期间，一个或多个集成电路中的接口接收与视频图像相关联的视频信号和照亮显示视频图像的显示器的光源的亮度设置。 接下来，电耦合到输入接口的提取电路基于接收到的视频信号计算与视频图像相关联的亮度度量。 然后，电耦合到提取电路的分析电路分析亮度度量以识别视频图像的一个或多个子集，并且电耦合到分析电路的强度电路基于 亮度设置和与视频图像的子集之一相关联的亮度度量的第一部分。 注意，视频图像的该子集包括视频图像中的空间变化的视觉信息。 此外，电耦合到强度电路的输出接口输出光源的强度设置。

公开(公告)号：EP2160732A2

公开(公告)日：2010-03-10

申请号：EP08771939.9

申请日：2008-06-25

Applicant: Apple Inc.

Inventor： BARNHOEFER, Ulrich T. ,  CORLETT, Barry J. ,  ALESSI, Victor E. ,  YAO, Wei H. ,  CHEN, Wei

IPC: G09G3/34 ,  G09G3/36 ,  H04N5/44

CPC classification number: G09G3/3611 ,  G09G3/3406 ,  G09G2310/0232 ,  G09G2320/0247 ,  G09G2320/0271 ,  G09G2320/0606 ,  G09G2320/0626 ,  G09G2320/0646 ,  G09G2320/0653 ,  G09G2320/0673 ,  G09G2330/021 ,  G09G2340/16 ,  G09G2360/16 ,  Y10S348/913

Abstract: Embodiments of a system (450) that includes one or more integrated circuits are described. During operation of the system, an interface in the one or more integrated circuits receives video signals (412) associated with a video image and a brightness setting (414) of a light source which illuminates a display that displays the video image. Next, an extraction circuit (462), which is electrically coupled to the input interface, calculates a brightness metric associated with the video image based on the received video signals. Then, an analysis circuit (464), electrically coupled to the extraction circuit, analyzes the brightness metric to identify one or more subsets (510, 512, 560) of the video image, and an intensity circuit (470), electrically coupled to the analysis circuit, determines an intensity setting (418) of the light source based on the brightness setting and a first portion of the brightness metric associated with one of the subsets of the video image. Note that this subset of the video image includes spatially varying visual information (510) in the video image. Moreover, an output interface, electrically coupled to the intensity circuit, outputs the intensity setting of the light source.