公开(公告)号：JP2000165884A

公开(公告)日：2000-06-16

申请号：JP31914499

申请日：1999-11-10

Applicant: ST MICROELECTRONICS SRL

Inventor： PICCINELLI EMILIANO ,  PEZZONI LUCA ,  PAU DANILO

IPC: H04N7/32 ,  G06T9/00 ,  H04N7/26 ,  H04N7/50

Abstract: PROBLEM TO BE SOLVED: To code video data with a more simplified hardware by calculating the complexity index of a single block at present and adding the maximum absolute difference of all blocks for fixing all the complexity indexes of a relative macro block. SOLUTION: First of all, the complexity index of a single block composing of the current macro block is calculated concerning both the styles of 'field' and 'frame'. By adding the maximum value of differences calculated to all the blocks composing of the macro block, entire macro block complexity can be provided. This calculation is repeated twice, namely, concerning the block provided when successive discrete cosine transformations(DCT) are performed in the 'frame' mode, the calculation is performed once on the line of a block corresponding to different semi-fields and the DCT is performed in the 'field' mode. Next, the second calculation is executed.

公开(公告)号：DE69801209T2

公开(公告)日：2001-11-08

申请号：DE69801209

申请日：1998-03-20

Applicant: ST MICROELECTRONICS SRL

Inventor： PICCINELLI EMILIANO ,  PAU DANILO ,  ZUCCARO AMEDEO

IPC: G06T7/20 ,  H04N7/26 ,  H04N5/00 ,  H04N7/36

Abstract: By relaying on a temporal correlation among successive pictures beside on a spatial correlation of motion vectors of macroblocks of the currently processed picture and by the use of a hierarchical recursive motion estimation algorithm, the hardware complexity of video coders complying with the MPEG-2 standard can be greatly reduced without an appreciable loss of quality of the video images been transferred. The method of motion estimation and a hardware embodiment of a coder are described and performance is compared with a prior motion estimation system.

公开(公告)号：DE69801209D1

公开(公告)日：2001-08-30

申请号：DE69801209

申请日：1998-03-20

Applicant: ST MICROELECTRONICS SRL

Inventor： PICCINELLI EMILIANO ,  PAU DANILO ,  ZUCCARO AMEDEO

IPC: G06T7/20 ,  H04N7/26 ,  H04N5/00 ,  H04N7/36

Abstract: By relaying on a temporal correlation among successive pictures beside on a spatial correlation of motion vectors of macroblocks of the currently processed picture and by the use of a hierarchical recursive motion estimation algorithm, the hardware complexity of video coders complying with the MPEG-2 standard can be greatly reduced without an appreciable loss of quality of the video images been transferred. The method of motion estimation and a hardware embodiment of a coder are described and performance is compared with a prior motion estimation system.

公开(公告)号：ITTO20020570A1

公开(公告)日：2004-01-02

申请号：ITTO20020570

申请日：2002-07-01

Applicant: ST MICROELECTRONICS SRL

Inventor： PAU DANILO ,  ALFONSO DANIELE ,  PICCINELLI EMILIANO ,  SIGNORELLI TIZIANA

IPC: G09G3/36 ,  G09G5/36 ,  H04N9/64

Abstract: An RGB digital video signal destined to be displayed on a display such as a liquid crystal display (LCD) is converted from the RGB colour space to the YUV colour space. The signal converted into the YUV colour space is subjected to at least a processing operation selected among a sub-sampling operation (24) and a data compression operation (26). The signal is then stored in a memory and the signal read from said memory (12) is then subjected to at least a return operation (28, 30) complementary to the aforesaid processing operation (24, 26). The signal subjected to the aforesaid return operation is lastly reconverted from the YUV colour space to the RGB colour space, thus being susceptible to be displayed on the display.

公开(公告)号：ITTO20020570D0

公开(公告)日：2002-07-01

申请号：ITTO20020570

申请日：2002-07-01

Applicant: ST MICROELECTRONICS SRL

Inventor： PAU DANILO ,  ALFONSO DANIELE ,  PICCINELLI EMILIANO ,  SIGNORELLI TIZIANA

IPC: G09G3/36 ,  G09G5/36 ,  H04N9/64

Abstract: An RGB digital video signal destined to be displayed on a display such as a liquid crystal display (LCD) is converted from the RGB colour space to the YUV colour space. The signal converted into the YUV colour space is subjected to at least a processing operation selected among a sub-sampling operation (24) and a data compression operation (26). The signal is then stored in a memory and the signal read from said memory (12) is then subjected to at least a return operation (28, 30) complementary to the aforesaid processing operation (24, 26). The signal subjected to the aforesaid return operation is lastly reconverted from the YUV colour space to the RGB colour space, thus being susceptible to be displayed on the display.