公开(公告)号：US20090086102A1

公开(公告)日：2009-04-02

申请号：US12222780

申请日：2008-08-15

申请人： Shinji Uchinuno ,  Fuminori Higashi

发明人： Shinji Uchinuno ,  Fuminori Higashi

IPC分类号： H04N5/202

CPC分类号： H04N5/202

摘要： A difference sample data holder of a gamma correction device holds as difference sample data a difference between a corrected signal level and a yet-to-be-corrected signal level for each of multiple sample points set at equal intervals between the permissible minimum and maximum levels of an input video signal. A correction execution unit performs cubic interpolation operation using the difference sample data held in the difference sample data holder, and adds the operated result and the signal level of the input video signal to obtain the signal level of the corrected video signal.

摘要翻译： 伽马校正装置的差分采样数据保持器保持作为差分采样数据，在允许的最小和最大电平之间以相等间隔设置的多个采样点中的每个采样点的校正信号电平和未修正信号电平之间的差异 的输入视频信号。 校正执行单元使用保持在差分采样数据保持器中的差分采样数据来执行三次插值运算，并且将运算结果和输入视频信号的信号电平相加，以获得校正后的视频信号的信号电平。

公开(公告)号：US08363168B2

公开(公告)日：2013-01-29

申请号：US12222780

申请日：2008-08-15

申请人： Shinji Uchinuno ,  Fuminori Higashi

发明人： Shinji Uchinuno ,  Fuminori Higashi

IPC分类号： H04N5/202

CPC分类号： H04N5/202

摘要： A difference sample data holder of a gamma correction device holds as difference sample data a difference between a corrected signal level and a yet-to-be-corrected signal level for each of multiple sample points set at equal intervals between the permissible minimum and maximum levels of an input video signal. A correction execution unit performs cubic interpolation operation using the difference sample data held in the difference sample data holder, and adds the operated result and the signal level of the input video signal to obtain the signal level of the corrected video signal.