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    31.
    发明专利
    未知

    公开(公告)号：AT374502T

    公开(公告)日：2007-10-15

    申请号：AT04425101

    申请日：2004-02-18

    Applicant: ST MICROELECTRONICS SRL ,  SGS THOMSON MICROELECTRONICS

    Inventor： GARDELLA PIER LUIGI ,  BARONE MASSIMILIANO ,  SWEET GARY ,  PAU DANILO ,  HILL STEPHEN ,  GODA SIMON

    IPC: H04N1/41 ,  G06T3/40 ,  G09G3/20 ,  G09G5/02 ,  H04N1/40 ,  H04N1/64 ,  H04N7/26

    Abstract: A dither matrix is applied to a high-resolution image to compare the value of each of the pixels that compose it with a threshold value of the matrix and to obtain an output value of the matrix (Dither matrix value) from each comparison. To each pixel value (in_value_r) of the image there is applied the algorithm represented by the schematic layout of Figure 7 to obtain the pixel values (Out_r) of a low-resolution image. C1-C5 and n1-n10 are parameters that may be selected by means of predetermined criteria based on comparisons of the low-resolution image, obtained by means of the operations described above, with an equivalent low-resolution image obtained by means of a sample method.

    33.
    发明专利
    未知

    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.

    34.
    发明专利
    未知

    公开(公告)号：DE69614500T2

    公开(公告)日：2001-11-22

    申请号：DE69614500

    申请日：1996-02-27

    Applicant: ST MICROELECTRONICS SRL

    Inventor： PAU DANILO

    IPC: H04N5/93 ,  G06T1/60 ,  G06T9/00 ,  G09G5/00 ,  H03M7/36 ,  H04N7/26 ,  H04N7/32 ,  H04N7/50

    Abstract: The video memory requisite of an MPEG-2 decoder commonly comprising a stage of decompression of the respective I, P and B-pictures of the MPEG compression algorithm before writing the data in respective buffers organized in the video memory and in which the decompression of a B-picture implies the use of forward and backward motion compensation predictors is reduced by: decompressing by macroblocks a B-picture while maintaining the relative backward predictor, stored in said memory, in a compressed form and decompressing macroblocks of a compressed P-picture using the respective forward predictor values; defining through said decompressed P-macroblocks the region of the stored compressed backward predictor containing the backward predictor value of the macroblock of the B-picture undergoing decompression; and extracting from said region the respective backward predictor value for the B-macroblock undergoing decompression, and completing the motion compensation routine according to the MPEG standard.

    35.
    发明专利
    未知

    公开(公告)号：DE69614500D1

    公开(公告)日：2001-09-20

    申请号：DE69614500

    申请日：1996-02-27

    Applicant: ST MICROELECTRONICS SRL

    Inventor： PAU DANILO

    IPC: H04N5/93 ,  G06T1/60 ,  G06T9/00 ,  G09G5/00 ,  H03M7/36 ,  H04N7/26 ,  H04N7/32 ,  H04N7/50

    Abstract: The video memory requisite of an MPEG-2 decoder commonly comprising a stage of decompression of the respective I, P and B-pictures of the MPEG compression algorithm before writing the data in respective buffers organized in the video memory and in which the decompression of a B-picture implies the use of forward and backward motion compensation predictors is reduced by: decompressing by macroblocks a B-picture while maintaining the relative backward predictor, stored in said memory, in a compressed form and decompressing macroblocks of a compressed P-picture using the respective forward predictor values; defining through said decompressed P-macroblocks the region of the stored compressed backward predictor containing the backward predictor value of the macroblock of the B-picture undergoing decompression; and extracting from said region the respective backward predictor value for the B-macroblock undergoing decompression, and completing the motion compensation routine according to the MPEG standard.

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