公开(公告)号：EP2777037A1

公开(公告)日：2014-09-17

申请号：EP12846847.7

申请日：2012-11-07

申请人： Dolby Laboratories Licensing Corporation

发明人： NINAN, Ajit ,  HUANG, Qifan ,  MATURI, Greg ,  MAMMEN, Neil ,  KRONROD, James

IPC分类号： G09G3/20 ,  G09G3/36

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

摘要： 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.

公开(公告)号：EP2777037B1

公开(公告)日：2016-12-28

申请号：EP12846847.7

申请日：2012-11-07

申请人： Dolby Laboratories Licensing Corporation

发明人： NINAN, Ajit ,  HUANG, Qifan ,  MATURI, Greg ,  MAMMEN, Neil ,  KRONROD, James

IPC分类号： G06F1/32 ,  G09G3/20 ,  G09G3/36 ,  G09G3/34

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