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    METHOD OF INSERTING DIGITAL WATERMARKS IN ONE-BIT AUDIO FILES
    42.
    发明公开
    METHOD OF INSERTING DIGITAL WATERMARKS IN ONE-BIT AUDIO FILES 审中-公开
    方法插入数字水印在一个位音频文件

    公开(公告)号：EP1728242A1

    公开(公告)日：2006-12-06

    申请号：EP05708938.5

    申请日：2005-03-04

    申请人： Koninklijke Philips Electronics N.V.

    发明人： BRUEKERS, Alphons, A., M., L. ,  WILLEMS, Franciscus, M., J.

    IPC分类号： G10L19/00 ,  G11B20/00

    CPC分类号： G11B20/00913 ,  G10L19/018 ,  G11B20/00086 ,  G11B20/00891

    摘要： There is described a method of processing a serial data signal to generate a corresponding transformed signal, for example encoded signal. The method includes steps of: (a) providing one or more signature sequences; (b) analysing the serial data signal to determine therein one or more signal sequences for which holds that combining such one or more signal sequences with said one or more signature sequences does not result in generation of illegal states; and (c) combining one or more of the determined signal sequences of the serial data signal with said one or more signature sequences so as to transform the serial data signal into the transformed signal. Moreover, there is also described apparatus (100) operable to execute the method and/or a corresponding inverse method.

    IDENTIFICATION OF DIGITAL DATA SEQUENCES
    43.
    发明公开
    IDENTIFICATION OF DIGITAL DATA SEQUENCES 审中-公开
    识别数字数据遵循

    公开(公告)号：EP1527415A2

    公开(公告)日：2005-05-04

    申请号：EP03784306.7

    申请日：2003-06-26

    申请人： Koninklijke Philips Electronics N.V.

    发明人： VAN DER VEEN, Minne ,  BRUEKERS, Alphons, A., M., L.

    IPC分类号： G06T1/00

    CPC分类号： G10L25/48 ,  G06T1/0021 ,  G10L19/018 ,  G11B20/00884

    摘要： Identification of a digital media sequence is performed by an encoding and a decoding process. A sequence is received and its digital fingerprint is computed. A database lookup based on the fingerprint produces one or more matches that all resemble the computed fingerprint to a certain degree. If there is more than one match, at least one attempt is made to detect a watermark in the sequence. If a watermark is found, at least part of the watermark is extracted and used to select one of the matches among the sequences that resemble the media sequence to be identified.

    WATERMARKING
    47.
    发明公开
    WATERMARKING 有权
    水印

    公开(公告)号：EP1393314A1

    公开(公告)日：2004-03-03

    申请号：EP02724542.2

    申请日：2002-04-19

    申请人： Koninklijke Philips Electronics N.V.

    发明人： VAN DER VEEN, Minne ,  BRUEKERS, Alphons, A., M., L. ,  HAITSMA, Jaap, A. ,  KALKER, Antonius, A., C., M.

    IPC分类号： G11B20/00

    CPC分类号： G11B20/00891 ,  G11B20/00086

    摘要： Disclosed is a method of embedding a watermark in an information signal (x(n)), such as an audio signal. The method comprises the steps of segmenting the audio signal into overlapping frames (xs(n)) using a set of analysis windows (ha(n)), calculating watermark segments (ws'(n)) for the overlapping frames, reconstructing a watermark signal (w'(n)) from the watermark segments using a set of reconstruction windows (hr(n)) which are complementary to the analysis windows, and adding the watermark signal to the information signal. The analysis and reconstruction windows may be constructed on the basis of prototype windows to fulfil predetermined complementary conditions. The analysis and reconstruction windows may be adapted to the contents of the information signal.

    摘要翻译： 公开了一种在诸如音频信号的信息信号（x（n））中嵌入水印的方法。 该方法包括以下步骤：使用一组分析窗口（ha（n））将音频信号分段为重叠帧（xs（n）），计算重叠帧的水印段（ws'（n）），重建水印 使用与分析窗口互补的一组重建窗口（hr（n））从水印分段读取信号（w'（n）），并将水印信号添加到信息信号。 分析和重构窗口可以在原型窗口的基础上构建，以满足预定的补充条件。 分析和重建窗口可以适应信息信号的内容。

    ROBUST CHECKSUMS
    48.
    发明公开
    ROBUST CHECKSUMS 有权
    鲁棒校验

    公开(公告)号：EP1356598A2

    公开(公告)日：2003-10-29

    申请号：EP01273323.4

    申请日：2001-12-18

    申请人： Koninklijke Philips Electronics N.V.

    发明人： BRUEKERS, Alphons, A., M., L. ,  HAITSMA, Jaap, A. ,  VAN DER VEEN, Minne ,  KALKER, Antonius, A., C., M.

    IPC分类号： H03M13/47

    摘要： The invention relates to a method of checking the correct operation of a signal transformation wherein an input signal is transformed into an output signal. The method comprises: deriving a first robust feature from the input signal; deriving a second robust feature from the output signal; comparing said first and second robust features; in case of sufficient similarity, concluding a correct operation of said signal transformation, and in case of insufficient similarity, concluding a false operation of said signal transformation. In a special embodiment, the method is applied wherein the first robust feature is embedded in the input signal through watermark technology, the thus obtained signal being transmitted to a receiver so as to retrieve an output signal corresponding to said input signal.

    REPRODUCTION ARRANGEMENT, TRANMISSION ARRANGEMENT, METHOD OF FORMING AND TRANSMITTING CODED INFORMATION AND METHOD OF REPRODUCING CODED INFORMATION
    49.
    发明公开
    REPRODUCTION ARRANGEMENT, TRANMISSION ARRANGEMENT, METHOD OF FORMING AND TRANSMITTING CODED INFORMATION AND METHOD OF REPRODUCING CODED INFORMATION 审中-公开
    播放设备，传输设备，制备和传输编码的信息和方法，用以演奏编码信息的方法

    公开(公告)号：EP1346359A1

    公开(公告)日：2003-09-24

    申请号：EP01272144.5

    申请日：2001-12-10

    申请人： Koninklijke Philips Electronics N.V.

    发明人： BRUEKERS, Alphons, A., M., L.

    IPC分类号： G11B20/00 ,  G11B20/10

    CPC分类号： G11B20/00086 ,  G11B20/10

    摘要： Reproduction arrangement for receiving information coded in accordance with a predefined standard, decoding the coded information and reproducing the decoding result. The reproduction arrangement may further receive and decode trigger information, which differs from the standard in a predefined manner. This results in a predefined special output, which is reproduced by the reproduction arrangement. A manufacturer of hardware and/or software present in the reproduction arrangement may thus verify in a simple manner whether this hardware and/or software has been made by himself. If the predefined special output is reproduced when the trigger information is added, then the reproduction arrangement will contain his hardware and/or software.

    WATERMARK INSERTION AND EXTRACTION
    50.
    发明公开
    WATERMARK INSERTION AND EXTRACTION 审中-公开
    插入和搜索WATERMARK

    公开(公告)号：EP1292945A1

    公开(公告)日：2003-03-19

    申请号：EP01925577.7

    申请日：2001-05-01

    申请人： Koninklijke Philips Electronics N.V.

    发明人： REEFMAN, Derk ,  BRUEKERS, Alphons, A., M., L. ,  KAMPERMAN, Franciscus, L., A., J. ,  STARING, Antonius, A., M.

    IPC分类号： G11B20/00 ,  G11B20/10 ,  H04H1/00 ,  H04N5/913

    CPC分类号： G11B20/00891 ,  G11B20/00086 ,  G11B20/10527 ,  G11B2020/00065 ,  H04H20/31 ,  H04H60/37 ,  H04H2201/50 ,  H04N2005/91335

    摘要： A high-quality signal, for example a unity-bit coded (DSD) audio signal having a 2.822 MHz bit rate (fs1) is converted to a lower sample rate (fs3) PCM signal by means of a sample rate converter (102). The watermark is embedded at the lower sample rate by a conventional watermark embedder (101) which is capable of handling signals at this lower rate. The watermark (WM) is not otherwise available. It is subsequently retrieved by subtracting (103) the unwatermarked signal from the watermarked signal, and up-sampled (104) to an intermediate sampling rate (fs2). The DSD signal is converted (110) to a PCM signal at said intermediate sample rate. The retrieved watermark is then added (107) to the PCM signal and the watermarked PCM signal is back-converted (120) to a unity-bit coded DSD signal. In a preferred embodiment, the arrangement includes a compensation circuit (105) which compensates the information signal X' for any (e.g. non-linear) operations performed by the embedder (101) so as to minimize the estimated watermark (WM'). The compensation circuit re-introduces said operations in the DSD domain by controlling parameters such as scaling (106, 109) and time shifting (108).