利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

188 条记录 (耗时 0.015 秒)

    Data processing apparatus and method
    14.
    发明公开
    Data processing apparatus and method 审中-公开
    Datenverarbeitungsgerätund -verfahren

    公开(公告)号：EP1394736A2

    公开(公告)日：2004-03-03

    申请号：EP03253663.3

    申请日：2003-06-10

    申请人： Sony United Kingdom Limited

    发明人： Tapson, Daniel Warren

    IPC分类号： G06T1/00

    CPC分类号： H04N1/32154 ,  G06T1/005 ,  G06T2201/0052 ,  G06T2201/0063 ,  G06T2201/0065 ,  G06T2201/0081 ,  H04N1/32165 ,  H04N1/3217 ,  H04N1/32277 ,  H04N2201/3235 ,  H04N2201/327

    摘要： A detecting data processing apparatus determines whether one or more code words of a predetermined set of code words are present in a suspected version of a material item. The apparatus comprises a registration processor operable to associate samples of the suspected version with samples of a copy of the original material item, a recovery processor and a detection processor. The recovery processor is operable to generate a recovered code word by comparing the registered copy of the original and the suspect material items. The detection processor is operable to detect one or more code words from a correlation between the recovered code word and the code words from the set. The registration processor is operable to form at least one reduced-bandwidth-version of the material item and to associate the suspected version and the copy of the material item in accordance with a comparison between the reduced-bandwidth-versions of the suspected version and the original material item.
    The registration of the suspected version and the original version of the material item is typically required in order to improve a likelihood of correctly recovering a code word from the suspected version. For material items such as video recordings of motion picture films, a substantial number of samples may need to be associated in order to effect the registration process. As a result, the registration process may be time consuming or at least computationally difficult. However, by forming reduced-bandwidth-versions of the suspected version and the original version of the material items, a corresponding reduction in the time taken to perform the registration process is provide in accordance with the bandwidth reduction.

    摘要翻译： 检测数据处理装置确定在材料项目的可疑版本中是否存在预定的一组代码字的一个或多个代码字。 该装置包括一个登记处理器，可操作以将可怀疑版本的样本与原始物品的副本，恢复处理器和检测处理器的样本相关联。 恢复处理器可操作以通过比较原始文件和可疑材料项目的注册副本来生成恢复的代码字。 检测处理器可操作以从恢复的码字和来自该组的码字之间的相关性来检测一个或多个码字。 注册处理器可操作以形成材料项目的至少一个减少带宽版本，并且根据可疑版本的减少带宽版本与可疑版本的缩减带宽版本之间的比较来关联可疑版本和材料项目的副本 原料项目。 通常需要注册疑似版本和原始版本的材料项目，以便提高从可疑版本正确恢复代码字的可能性。 对于诸如电影胶片的视频记录等物品，可能需要关联大量的样本以实现注册过程。 结果，注册过程可能是耗时的或者至少是计算上困难的。 然而，通过形成可疑版本的减少带宽版本和原始版本的材料项目，根据带宽减少提供执行注册过程所花费的时间的相应减少。

    Digital watermark embedding and detection devices
    15.
    发明公开
    Digital watermark embedding and detection devices 有权
    数字水印检测装置 - 嵌入和

    公开(公告)号：EP1006710A3

    公开(公告)日：2003-10-08

    申请号：EP99309490.3

    申请日：1999-11-29

    申请人： KABUSHIKI KAISHA TOSHIBA

    发明人： Muratani, Hirofumi, c/o Intel. Property Div. ,  Katoh, Taku, c/o Intel. Property Div. ,  Endo, Naoki, Intel. Property Div.

    IPC分类号： H04N1/32

    CPC分类号： G06T1/0021 ,  G06T2201/0052 ,  H04N1/32154 ,  H04N1/32187 ,  H04N2201/3233 ,  H04N2201/327

    摘要： A digital watermark embedding device has an input section which inputs pixel value data of an image which is a target for embedding of watermark information, an embedded position selection section which determines a position in frequency domain into which the watermark information is to be embedded, irrespectively of a frequency component value, a frequency component value variation decision section which determines a variation of a frequency component value at each embedded position determined by the embedded position selection section, a pixel value variation calculation section which calculates a variation of a pixel value at each point in pixel value domain of the image based on the embedded position in frequency domain determined by the embedded position selection section and on the variation of a frequency component value determined by the frequency component value variation decision section, a pixel value conversion section which embeds watermark information by changing corresponding pixel value data of the image in accordance with the variation of a pixel value at each point in pixel value domain calculated by the pixel value variation calculation section, and an output section which outputs pixel value data of the image into which watermark information has been embedded.

    Data processing apparatus and method
    17.
    发明公开
    Data processing apparatus and method 有权
    数据处理装置和方法

    公开(公告)号：EP1324262A2

    公开(公告)日：2003-07-02

    申请号：EP02258552.5

    申请日：2002-12-11

    申请人： SONY UNITED KINGDOM LIMITED

    发明人： Pelly, Jason Charles ,  Tapson, Daniel Warren

    IPC分类号： G06T1/00

    CPC分类号： H04N1/32154 ,  G06T1/005 ,  G06T2201/0052 ,  G06T2201/0063 ,  H04N1/32165 ,  H04N2201/324 ,  H04N2201/327

    摘要： A watermarking system comprises an encoding data processor operable to generate at least one marked version of an original item of material by introducing one of a predetermined set of code words into a copy of the original material item. The code words are generated from a pseudo-random number generator initialised with a seed value. The seed value is used to identify the marked material item, from the code word produced from the seed value. The watermarking system also includes a detecting data processor operable to identify a particular marked copy of the material item by recovering a code word from the marked material item and correlating all code words in the set of code words with the recovered code word. The detecting data processing apparatus also includes a registration processor operable to associate samples of the original material item with corresponding samples of the marked material item to which corresponding code word coefficients may have been added. By registering the original material item with the marked material item, a likelihood of correctly identifying the version of the marked material item is improved, reducing a false negative detection probability.

    摘要翻译： 一种水印系统包括编码数据处理器，可操作用于通过将预定的一组码字中的一个码字引入原始素材项目的副本中来生成原始素材项目的至少一个标记版本。 码字是从用种子值初始化的伪随机数生成器生成的。 种子值用于从根据种子值生成的代码字中识别标记的材料项目。 该水印系统还包括检测数据处理器，该检测数据处理器可操作用于通过从被标记的材料项目中恢复出码字并且将该组码字中的所有码字与恢复的码字相关来识别该物质项目的特定被标记副本。 检测数据处理设备还包括注册处理器，该注册处理器可操作以将原始材料项目的样本与可能已添加有相应码字系数的标记材料项目的对应样本相关联。 通过注册带有标记的物料项目的原始物料项目，正确识别标记的物料项目的版本的可能性得到改善，从而减少了错误的否定检测概率。

    DIGITAL COMPUTER SYSTEMS
    18.
    发明公开
    DIGITAL COMPUTER SYSTEMS 审中-公开
    数字电脑系统

    公开(公告)号：EP1269740A1

    公开(公告)日：2003-01-02

    申请号：EP00909549.8

    申请日：2000-03-06

    申请人： Meyer, Thomas W. ,  Meyer, Josslyn Mothe

    发明人： Meyer, Thomas W. ,  Meyer, Josslyn Mothe

    IPC分类号： H04N1/32

    CPC分类号： G11B27/029 ,  H04N1/32144 ,  H04N1/32154 ,  H04N1/32277 ,  H04N9/79 ,  H04N2201/3233 ,  H04N2201/327

    摘要： A novel process and system for flexibly adding supplemental digital program content such as, for example, transactional advertising content, games, polls, contests, interactive music videos, and e-commerce content generally and the like, into pre-prepared digital media files, such as an MP3 audio file or the like, for playback by digital playback apparatus, wherein the pre-prepared media file is modified by embedding therein executable code representing such supplemental program content, and enabling the playback apparatus to decode and execute the presentation of the supplemental program material as an addition to the playback of the pre-prepared media file content.

    摘要翻译： 一种用于将诸如例如事务性广告内容，游戏，民意调查，比赛，交互式音乐视频和电子商务内容等补充数字节目内容一般地等地添加到预先准备好的数字媒体文件中的新颖的过程和系统， 例如MP3音频文件等，用于由数字播放装置进行播放，其中通过在其中嵌入表示这种补充节目内容的可执行代码来修改预先准备的媒体文件，并且使播放装置能够解码并执行 补充程序材料作为预先准备的媒体文件内容的回放的补充。

    Derivation and quantization of robust non-local characteristics for blind watermarking
    20.
    发明公开
    Derivation and quantization of robust non-local characteristics for blind watermarking 有权
    生产和强劲的非本地特色量化盲水痕

    公开(公告)号：EP1253784A2

    公开(公告)日：2002-10-30

    申请号：EP02006202.2

    申请日：2002-03-19

    申请人： MICROSOFT CORPORATION

    发明人： Mihcak, Kivanc M. ,  Venkatesan, Ramarathnam ,  Jakubowski, Mariusz H.

    IPC分类号： H04N7/00

    CPC分类号： G06T1/005 ,  G06F21/16 ,  G06T2201/0052 ,  G06T2201/0065 ,  G06T2201/0083 ,  H04L63/1441 ,  H04L2463/101 ,  H04N1/32144 ,  H04N1/32149 ,  H04N1/32154 ,  H04N1/3217 ,  H04N1/32187 ,  H04N1/32277 ,  H04N1/3232 ,  H04N1/32341 ,  H04N21/8358 ,  H04N2201/3233 ,  H04N2201/327

    摘要： An implementation of a technology is described herein for deriving robust non-local characteristics and quantizing such characteristics for blind watermarking of a digital good. This technology finds the proper balance between minimizing the probability of false alarms (i.e., detecting a non-existent watermark) and the probability of misses (i.e., failing to detect an existing watermark). The technology, described herein, performs quantization index modulation (QIM) based upon non-local characteristics of the digital good. Non-local characteristics may include statistics (e.g., averages, median) of a group of individual parts (e.g., pixels) of a digital good. This abstract itself is not intended to limit the scope of this patent. The scope of the present invention is pointed out in the appending claims.

    摘要翻译： 技术的实现被描述为获得强大的非本地特色和量化检验特性的数字良好的盲水印。 这项技术发现减少误报警的概率之间的适当平衡（即检测一个不存在的水印）和未命中的概率（即，无法检测现有水印）。 的技术中，描述在执行基于所述数字良好的非本地特性量化索引调制（QIM）。 非本地特性可以包括一组数字良好的各个部分（E. G.像素）的统计数据（例如，平均值，中位值）。 这个抽象本身并非意在限制本专利的范围。 本发明的范围在所附权利要求中指出。