公开(公告)号：EP1587058A4

公开(公告)日：2012-05-30

申请号：EP03778899

申请日：2003-12-12

申请人： SONY CORP

发明人： KONDO TETSUJIRO ,  ASAKURA NOBUYUKI ,  NISHIKATA TAKEHARU ,  MORIMURA TAKUO ,  HIRAIZUMI KEI ,  NAGANO HIROSUKE ,  YAMAMOTO SAKON

IPC分类号： G09G5/00 ,  G06T3/40 ,  G09G3/20 ,  G09G5/36 ,  H04N7/01

CPC分类号： G06T3/40 ,  G09G2320/103 ,  G09G2340/0414 ,  G09G2340/0421 ,  H04N7/0145

公开(公告)号：EP1282236A4

公开(公告)日：2009-07-08

申请号：EP01930004

申请日：2001-05-09

申请人： SONY CORP

发明人： KONDO TETSUJIRO ,  HAMAMATSU TOSHIHIKO ,  NAKAYA HIDEO ,  NISHIKATA TAKEHARU ,  OHTSUKA HIDEKI ,  KUNIHIRO TAKESHI ,  MORIFUJI TAKAFUMI ,  UCHIDA MASASHI

IPC分类号： H03M7/30 ,  H03M7/36 ,  H04N1/41 ,  H04N7/26 ,  H04N7/30 ,  H04N7/32 ,  H04N7/50

CPC分类号： H03M7/30 ,  H04N19/117 ,  H04N19/14 ,  H04N19/176 ,  H04N19/44 ,  H04N19/46 ,  H04N19/60 ,  H04N19/61 ,  H04N19/63 ,  H04N19/86 ,  H04N19/98

摘要： JPEG-coded data is entropy-decoded to quantized DCT coefficients, which are supplied to a prediction tap extracting circuit (41) and a class tap extracting circuit (42). the prediction tap extracting circuit (41) and the class tap extracting circuit (42) extract necessary ones from the quantized DCT coefficients to produce a prediction tap and a class tap. A class sorting circuit (43) conducts class sorting according to the class tap. A coefficient table storage unit (44) supplies the tap coefficient corresponding to the class determined by the class sorting to a product-sum operating circuit (45). The product-sum operating circuit (45) conducts a linear prediction operation by using the tap coefficient and the class tap to produce decoded image data.