公开(公告)号：EP1633139A1

公开(公告)日：2006-03-08

申请号：EP04745590.2

申请日：2004-06-04

申请人： SONY CORPORATION

发明人： KONDO, Tetsujiro, Sony Corporation ,  NAKANISHI, Takashi, Sony Corporation ,  KIKUCHI, Daisuke, Sony Corporation ,  CHIKAOKA, Shizuo, Sony Corporation ,  MIYAI, Takeshi, Sony Corporation ,  NAKAMURA, Yoshiaki, Sony Corporation ,  HAGA, Tsugihiko, Sony Corporation

IPC分类号： H04N7/01

CPC分类号： H04N7/0125 ,  H04N7/0145

摘要： This invention relates to an apparatus for processing an information signal etc. that, when converting, for example, SD signal into HD signal, enables well to be obtained pixel data of HD signal no matter whether the dynamic range DR is large or small. DR in a class tap is detected. If DR≥Th, items of pixel data Y 1-a ―Y 4-a calculated by using item of coefficient data W i-a corresponding to a class code Ca are estimated as items of pixel data of HD signal. If DR 1-a ― y 4-a y 1-b ―y 4-b calculated by using items of coefficient data W i-a , W i-b corresponding to class codes Ca, Cb is estimated as item of the pixel data of HD signal. The items of coefficient data Wi-a, Wi-b are obtained by learning between a student signal corresponding to the SD signal and a teacher signal corresponding to the HD signal by using a portion of the DR having a value thereof that is not less than the threshold value Th. The code Ca is converted into the code Cb so that the addition mean value can most approach a true value of the pixel data of the HD signal.

摘要翻译： 本发明涉及到用于信息信号等的是，当转换，例如，SD信号转换成HD信号，使井是无论动态范围DR是大还是小HD中获得的像素数据信号不管的处理装置。 DR在类别抽头被检测。 如果DR‰¥Th时，像素数据Y的项1-Aý€•4-一个通过使用系数数据的物W计算的I-A对应于类代码的Ca被估计为HD信号的像素数据的项。 如果DR