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    METHOD AND APPARATUS FOR INSERTING SOURCE IDENTIFICATION DATA INTO A VIDEO SIGNAL
    52.
    发明公开
    METHOD AND APPARATUS FOR INSERTING SOURCE IDENTIFICATION DATA INTO A VIDEO SIGNAL 失效
    方法和设备源的识别数据在视频信号中夹杂物

    公开(公告)号：EP0777946A1

    公开(公告)日：1997-06-11

    申请号：EP95930246.0

    申请日：1995-08-22

    申请人： MACROVISION CORPORATION

    发明人： COPELAND, Gregory, C.

    IPC分类号： G11B20 ,  H04N5 ,  H04N7 ,  G06F7

    CPC分类号： H04N21/8358 ,  G06F7/725 ,  G11B20/00086 ,  G11B20/00094 ,  G11B20/0021 ,  G11B20/00913 ,  H04N5/913 ,  H04N7/08 ,  H04N7/165 ,  H04N2005/91335

    摘要： The source identification data (Finger Print) is injected into the active picture area of a video signal without disturbing the viewing of the video signal and the data is retrieved by a data reader, called a Fingerprint Reader. The data injection or 'fingerprinting' process consists of dynamically offsetting the video pedestal to carry information which can then be read back from any videotape made from the output of the data-injecting unit. In particular, the fingerprint carries the ID number of the unit used and the current date. The offset lasts for one entire field and has an amplitude of approxmately 0.5 IRE that is, a given field either has the nominal setup or a setup value differing from nominal by 0.5 IRE. The data is repeated every 128 fields in order to provide ample samples for the reader to detect and display the source identification data.

    WATERMARK APPLIED TO ONE-DIMENSIONAL DATA
    58.
    发明授权
    WATERMARK APPLIED TO ONE-DIMENSIONAL DATA 失效
    WATERMARK用在三维数据

    公开(公告)号：EP1052612B1

    公开(公告)日：2006-06-07

    申请号：EP98911172.9

    申请日：1998-04-01

    申请人： Kowa Company. Ltd. ,  Matsui, Kineo

    发明人： MATSUI, Kineo ,  IWAKIRI, Munetoshi

    IPC分类号： G09C5/00 ,  H03M7/30 ,  G10L19/00 ,  G11B20/00

    CPC分类号： G11B20/00086 ,  G10L19/018 ,  G10L21/00 ,  G10L25/00 ,  G11B20/00913 ,  H04B1/707

    摘要： In order to bury watermark information in an original one-dimensional data, first a 1st spread one-dimensional data x(t) is generated by spreading the spectrum of the original one-dimensional data s(t) by using a PN series g(t). Then the 1st spread one-dimensional data is subjected to modified discrete cosine transformation. The specific frequency component value of the MDCT coefficient is so adjusted as to correspond to the watermark information. By subjecting the adjusted frequency component to the reverse conversion, a 2nd spread one-dimensional data x'(t) is generated. Lastly, by the reverse spectrum-spreading using the same PN series as those used in the spectrum-spreading, watermark one-dimensional data in which the watermark information is buried is generated.

    Embedding sound field control factors
    59.
    发明公开
    Embedding sound field control factors 审中-公开
    嵌入声场的控制因素

    公开(公告)号：EP1635348A3

    公开(公告)日：2006-04-19

    申请号：EP05108382.2

    申请日：2005-09-13

    申请人： SAMSUNG ELECTRONICS CO., LTD.

    发明人： Ko, Byeong-seob

    IPC分类号： G11B20/10 ,  G11B27/10 ,  G10K15/08 ,  G11B27/00 ,  G11B20/00 ,  H04S3/00 ,  H04H1/00 ,  H04S1/00

    CPC分类号： G11B20/00992 ,  G11B20/00891 ,  G11B20/00913 ,  G11B20/10527 ,  G11B27/002 ,  G11B27/10 ,  G11B2020/10546 ,  H04H20/31 ,  H04H20/89 ,  H04H2201/50

    摘要： A method of embedding sound field control factors (SFC factors) into a sound source. The method includes coding sound field factors and sound field information to obtain sound field control factors for the sound source in a binary data type, and the sound field factors represent an acoustic characteristic of the sound source and the sound field information represents an environment under which the sound source is recorded, and watermarking the sound field control factors into the sound source without compressing the sound source. In this method, the SFC factors that represent characteristics of the sound source are embedded into the sound source itself using a digital watermarking technology. Therefore, the SFC factors need not be manually set by a user. In addition, the SFC factors can be reliably transmitted, irrespective of header corruption caused by format conversion and transmission of a compressed sound source.