公开(公告)号：EP2622598A1

公开(公告)日：2013-08-07

申请号：EP11827846.4

申请日：2011-09-23

申请人： ATI Technologies ULC

发明人： DONG, Hongfeng ,  BAGSHAW, Stephen ,  CHEREPACHA, Don ,  GLEN, David

IPC分类号： G09G5/10 ,  G02F1/13357 ,  G09G3/36

CPC分类号： G09G5/026 ,  G09G3/3406 ,  G09G2320/0238 ,  G09G2320/0276 ,  G09G2320/062 ,  G09G2320/0646 ,  G09G2360/144 ,  G09G2360/16 ,  H04N5/58 ,  H04N9/3155 ,  H04N21/4318 ,  H04N21/44008 ,  H04N21/4436

摘要： System and method for providing control data for dynamically adjusting lighting and adjusting video pixel data for a display to substantially maintain image display quality while reducing power consumption. In accordance with one or more embodiments, image statistics, e.g., histogram data representing luma values corresponding to pixels for a video frame, are analyzed to determine whether the pixels represent one or more of a plurality of images which includes an image containing primarily natural imagery, an image containing primarily graphics imagery, and an image containing a combination of at least respective portions of natural and graphics imagery. Based on such analysis, control data are provided to enable light source brightness reduction by one of a plurality of percentages and pixel brightness increases, e.g., in accordance with one of a plurality of multiple-segment piecewise linear curves defined in accordance with respective segment slopes, thresholds, and threshold offsets in accordance with whether the incoming pixel data primarily represents a natural image, primarily represents a graphics image, or represents a combination of natural and graphics images.

公开(公告)号：EP2235932A1

公开(公告)日：2010-10-06

申请号：EP08864372.1

申请日：2008-12-16

申请人： ATI Technologies ULC

发明人： GLEN, David

IPC分类号： H04N5/14 ,  G11B20/10 ,  H04N5/85 ,  H04N7/01

CPC分类号： H04N5/44 ,  H04N5/57 ,  H04N5/775 ,  H04N5/781 ,  H04N5/85 ,  H04N7/012 ,  H04N7/0127 ,  H04N7/014 ,  H04N7/0147 ,  H04N7/083 ,  H04N7/088 ,  H04N9/8205 ,  H04N19/61 ,  H04N21/4318 ,  H04N21/435 ,  H04N21/436 ,  H04N21/44 ,  H04N21/84

摘要： An upstream video processor may perform video processing upon video data to created processed video data. The video processing may include at least on of color correction, contrast correction, gamma correction, sharpness enhancement, and edge enhancement. Metadata indicative of the performed video processing may also be generated. The processed video data and metadata may be passed to a downstream video processor, the latter for use in determining what further video processing, if any, to apply. An intermediate video processor may receive video data and metadata indicating video processing perfomed thereupon by an upstream video processor. Based on the received metadata, additional video processing may be performed, and new metadata indicating the additional video processing may be generated. Composite metadata may be generated from the received and new metadata and may be passed along with the processed video data to a downstream video processor for use in determining what further video processing, if any, to apply.

公开(公告)号：EP2232848A1

公开(公告)日：2010-09-29

申请号：EP08865646.7

申请日：2008-12-17

申请人： ATI Technologies ULC

发明人： GLEN, David

IPC分类号： H04N5/44 ,  H04N7/015 ,  H04N5/91

CPC分类号： H04N5/44543 ,  H04N21/485

摘要： One of a video source device and a video sink device may: (a) deactivate a video processing function at the one device and send a command for causing the other of the video source device and the video sink device to activate the video processing function; (b) activate the video processing function at the one device and send a command for causing the other device to deactivate the video processing function; and (c) based on user input indicating whether (a) or (b) resulted in a preferred video image, effect (a) or (b). The one device may receive an indication of video processing functions of which the other device is capable, such that (a), (b) and (c) may be performed for each indicated video processing function of which the one device is also capable. A user interface including at least one selectable control for indicating whether a video image resulting from (a) or (b) is preferred may be displayed.

公开(公告)号：EP2229772A1

公开(公告)日：2010-09-22

申请号：EP08857075.9

申请日：2008-10-28

申请人： ATI Technologies ULC

发明人： GLEN, David

IPC分类号： H04N5/46 ,  G09G5/02 ,  H04N9/64 ,  G09G3/36 ,  G06F3/12

CPC分类号： G09G5/02 ,  G09G3/36 ,  G09G2340/06

摘要： A wide gamut RGB digital display, such as an LCD display, digital television, printer, or any other suitable display, includes wide color gamut configuration message control logic that is operative to indicate, to an image source provider, wide gamut RGB indication information and wide color gamut format definition information that indicates that wide gamut RGB color data is to be received by the wide gamut RGB digital display. The wide gamut configuration message control logic is also operatively responsive to wide gamut confirmation information that is received from the image source provider. The wide gamut RGB digital display also includes logic that is operative to display received wide gamut RGB color data that was received in response to the wide gamut RGB indication information and the format definition information.