-
公开(公告)号：US07224296B2
公开(公告)日：2007-05-29
申请号：US10511216
申请日：2003-04-17
IPC分类号： H03M7/00
CPC分类号： H03M13/29 , H03M5/145 , H03M13/2909 , H03M13/2921 , H03M13/63
摘要： A signal includes a runlength limited (RLL) encoded binary d,k channel bitstream, parameter d defining a minimum number and k defining a maximum number of zeroes between any two ones of the bitstream, or vice versa. The signal further includes a number of sections of respectively N successive RLL channel bits, called RLL rows, each RLL row representing a row parity-check code-word, in which a row-based parity-check constraint for the RLL row has been realized. K sections of respectively N successive channel bits, called column parity-check rows, are located at predetermined positions of a group of M RLL rows. The column parity-check rows include column parity-check enabling channel words, each realizing a column-based parity-check constraint for all corresponding segments of at least the M RLL rows of the group that correspond to a specific column parity-check enabling channel word, thereby constituting a column parity-check codeword.
摘要翻译： 信号包括游程限制（RLL）编码的二进制d，k信道比特流，定义最小数目的参数d，k定义任何两个比特流之间的最大数量的零，反之亦然。 信号还包括分别为N个连续的RLL信道位的多个部分，称为RLL行，每个RLL行表示行奇偶校验码字，其中已经实现了用于RLL行的基于行的奇偶校验约束 。 称为列奇偶校验行的N个连续通道位的K个部分位于一组M RLL行的预定位置。 列奇偶校验行包括列奇偶校验使能通道字，每个字段对于与特定列奇偶校验允许通道对应的组的至少M RLL行的所有相应段实现基于列的奇偶校验约束 字，从而构成列奇偶校验码字。
-
22.发明授权公开(公告)号：US07123743B2
公开(公告)日：2006-10-17
申请号：US10240335
申请日：2002-02-11
IPC分类号： G06K9/00
CPC分类号： H04N5/913 , G06T1/0071 , G11B20/00086 , G11B20/00884 , H04N1/32149 , H04N1/3216 , H04N1/32293 , H04N1/32304 , H04N21/8358 , H04N2005/91335
摘要： Disclosed is a method for the detection of pseudo-symmetric watermarks in an information signal. The method includes receiving the information signal, wherein the watermark is embedded in respective sections of the information signal by tiling a finite number of a plurality of watermark patterns, accumulating the sections, and correlating the accumulated sections with a sum of the plurality of watermark patterns. In particular, the information signal is folded as if there was only a single basic pattern. The presence of the watermark is then detected by a cyclic sliding correlating.
摘要翻译： 公开了一种在信息信号中检测伪对称水印的方法。 该方法包括接收信息信号，其中通过对有限数量的多个水印图案进行平铺，积累这些部分，并且将累积部分与多个水印图案的和相关联，将水印嵌入在信息信号的相应部分中 。 特别地，信息信号被折叠好像只有一个基本模式。 然后通过循环滑动相关来检测水印的存在。
-
公开(公告)号：US20050108242A1
公开(公告)日：2005-05-19
申请号：US10496544
申请日：2002-10-31
CPC分类号： G06F16/48
摘要： A method of maintaining a database comprising a fingerprint of and an associated set of metadata for each of a number of multimedia objects. Respective portions (201, 202, 203, 204, 205) of the database are distributed over respective file sharing clients (101-105) connected to a file sharing network (100) arranged for sharing said number of multimedia objects. File sharing clients (101-105) can maintain their own respective portions (201-205) of the database, or transmit fingerprints and metadata to another file sharing client. In the latter case, the other file sharing client is preferably a supermode in the file sharing network (100).
摘要翻译： 一种维护数据库的方法，所述数据库包括多个多媒体对象中的每一个的指纹和相关的一组元数据。 数据库的相应部分（201,202,203,204,205）分布在连接到被配置为共享所述多个多媒体对象的文件共享网络（100）的相应文件共享客户端（101-105）上。 文件共享客户端（101 - 105）可以维护其各自的数据库部分（201 - 205），或将指纹和元数据传输到另一个文件共享客户端。 在后一种情况下，其他文件共享客户端优选地是文件共享网络（100）中的超级代码。
-
公开(公告)号：US08051290B2
公开(公告)日：2011-11-01
申请号：US10498962
申请日：2002-12-09
IPC分类号： H04L9/32
CPC分类号： G06T1/005 , G06T1/0028 , G06T2201/0064 , G06T2201/0065 , G06T2201/0083 , G11B19/122 , G11B20/00086 , G11B20/00405 , G11B20/00768 , G11B20/00884 , G11B2220/2562 , H04N19/467
摘要： This invention relates to a method and an arrangement for embedding a watermark pattern in an information signal. A method of embedding a watermark pattern in an information signal comprising the steps of determining a robust signature as a set of robust features in said information signal, creating a watermark pattern as a signature dependent function of a predefined basic watermark pattern and embedding said watermark pattern in said information signal. The invention also relates to a corresponding method and arrangement for detecting a watermark pattern in an information signal.
摘要翻译： 本发明涉及一种在信息信号中嵌入水印图案的方法和装置。 一种在信息信号中嵌入水印图案的方法，包括以下步骤：确定鲁棒特征作为所述信息信号中的一组鲁棒特征，创建水印图案作为预定义基本水印图案的签名相关函数，并嵌入所述水印图案 在所述信息信号中。 本发明还涉及用于检测信息信号中的水印图案的相应方法和装置。
-
25.发明授权Multirate filter as well as display system and mobile telephone comprising said multirate filter 有权多速率滤波器以及包括所述多速率滤波器的显示系统和移动电话公开(公告)号：US07577696B2
公开(公告)日：2009-08-18
申请号：US10537066
申请日：2003-12-04
IPC分类号： G06F17/10
CPC分类号： H03H17/0275 , H03H17/0276 , H03H17/0685
摘要： A multirate filter according to the invention comprises, a) an input unit (10) for receiving an input signal (Sin) and for providing a plurality of intermediate signals (IS1, IS2) in response to said input signal, b) a filter unit (20) coupled to the input unit (10), and c) an output unit (30) coupled to the filter unit (20), for generating an output signal (Sout). The filter unit (20) comprises at least a first and a second filter module (21, 22), with a transfer function H0(z) and a transfer function H1(z) respectively, which are mutually related according to the relations H0(z)=c0(HB(z)+Mα,ψHB(z)) and, H1(z)=c1(HB(z)+Mα,ψHB(z)) wherein, Mα,ψ(HB(z))=αz−2ψHB*(z−1), and wherein Formula (I), being the z-transform of hb[m]. The multirate filter comprises a combination unit (11) coupled to said filter modules (21, 22) for generating a first combination signal (Ssum) and a second combination signal (Sdiff).
摘要翻译： 根据本发明的多速率滤波器包括：a）用于接收输入信号（Sin）并响应于所述输入信号提供多个中间信号（IS1，IS2）的输入单元（10），b）滤波器单元 （20），以及c）耦合到所述滤波器单元（20）的输出单元（30），用于产生输出信号（Sout）。 滤波器单元（20）至少包括具有传递函数H0（z）和传递函数H1（z）的第一和第二滤波器模块（21,22），它们分别根据关系H0（ （HB（z）+ Malpha，psiHB（z））和H1（z）= c1（HB（z）+ Malpha，psiHB（z））其中，Malpha，psi（HB（z））= alphaz-2psiHB *（z-1），其中式（I）是hb [m]的z变换。 多速率滤波器包括耦合到所述滤波器模块（21,22）的组合单元（11），用于产生第一组合信号（Ssum）和第二组合信号（Sdiff）。
-
26.发明授权公开(公告)号：US07109894B2
公开(公告)日：2006-09-19
申请号：US10529664
申请日：2003-10-02
CPC分类号： H04N19/126 , H04N19/154 , H04N19/176 , H04N19/60 , H04N19/94 , H04N21/234327 , H04N21/234354 , H04N21/23614 , H04N21/4348 , H04N21/4621 , H04N21/4627
摘要： The invention discloses a method of embedding information for high quality restoration of a media signal (typically an audio-visual signal) in a lower quality version of the signal. To this end, the signal x is encoded using a high quality encoder (Q2). The code sequences z produced by the high quality encoder are mapped into code sequences y that are associated with a hypothetical lower quality encoder (Q1). The latter code sequences y are transmitted. A simple decoder will decode the received sequences y, and thus reproduce a low quality version of the signal. A more sophisticated decoder is arranged to inversely map the received code sequences y into the code sequences z, that were actually produced by the high quality encoder (Q2). The sophisticated decoder will thus reproduce a higher quality version of the same signal.
摘要翻译： 本发明公开了一种在低质量版本的信号中嵌入用于媒体信号（通常是视听信号）的高质量恢复的信息的方法。 为此，使用高质量编码器（Q 2）对信号x进行编码。 由高质量编码器产生的码序列z被映射成与假设的低质量编码器（Q 1）相关联的码序列y。 后一码序列y被发送。 一个简单的解码器将对接收的序列y进行解码，从而再现信号的低质量版本。 更复杂的解码器被布置为将接收到的码序列y反向映射到由高质量编码器（Q 2）实际产生的码序列z中。 因此，复杂的解码器将再现相同信号的较高质量版本。
-
公开(公告)号：US06823006B2
公开(公告)日：2004-11-23
申请号：US10225383
申请日：2002-08-21
IPC分类号： H04B166
CPC分类号： G06T1/0085 , G06T2201/0061 , G06T2201/0065 , H04N19/112 , H04N19/467
摘要： For some video processing applications, most notably watermark detection (40), it is necessary to add or average (parts of) the two interlaced fields which make up a frame. This operation is not trivial in the MPEG domain due to the existence of frame-encoded DCT blocks. The invention provides a method and arrangement for adding the fields without requiring a frame memory or an on-the-fly inverse DCT. To this end, the mathematically required operations of inverse vertical DCT (321) and addition (322) are combined with a basis transform (323). The basis transform is chosen to be such that the combined operation is physically replaced by multiplication with a sparse matrix (32). Said sparse matrix multiplication can easily be executed on-the-fly. The inverse basis transform (35) is postponed until after the desired addition (33, 34) has been completed.
摘要翻译： 对于一些视频处理应用，最值得注意的是水印检测（40），有必要添加或平均构成帧的两个隔行扫描场（部分）。 由于存在帧编码的DCT块，所以在MPEG域中这种操作并不是微不足道的。 本发明提供了一种用于在不需要帧存储器或即时反DCT的情况下添加场的方法和装置。 为此，逆垂直DCT（321）和加法（322）的数学上需要的操作与基础变换（323）组合。 选择基础变换使得组合操作被物理地替换为与稀疏矩阵（32）的乘法。 所述稀疏矩阵乘法可以容易地在运行中执行。 反向基变换（35）被推迟直到所需加法（33,34）完成。
-
公开(公告)号：US08180098B2
公开(公告)日：2012-05-15
申请号：US10514903
申请日：2003-04-25
IPC分类号： G06K9/00
CPC分类号： G06T1/0028 , G06T2201/0065 , G06T2201/0081 , H04N1/32144 , H04N21/23892 , H04N21/8358
摘要： A monitoring station for monitoring distribution of media content, on basis of a watermark, comprises: receiving means for receiving an information signal representing the media content to which the watermark is added; extracting means for extracting perceptual features, identifying the information signal; first retrieving means for retrieving a supporting signal on basis of the perceptual features; second retrieving means for retrieving the watermark on basis of the supporting signal; and comparing means for comparing the watermark with predetermined information.
摘要翻译： 一种用于监视基于水印的媒体内容分发的监控站，包括：接收装置，用于接收表示添加了所述水印的媒体内容的信息信号; 提取装置，用于提取感知特征，识别信息信号; 第一检索装置，用于根据感知特征检索支持信号; 第二检索装置，用于根据支持信号检索水印; 以及用于将水印与预定信息进行比较的比较装置。
-
公开(公告)号：US07260219B2
公开(公告)日：2007-08-21
申请号：US10785495
申请日：2004-02-24
申请人： Johan Paul Marie Gerard Linnartz , Antonius Adrianus Cornelis Maria Kalker , Johan Cornelis Talstra
发明人： Johan Paul Marie Gerard Linnartz , Antonius Adrianus Cornelis Maria Kalker , Johan Cornelis Talstra
IPC分类号： G06F12/14
CPC分类号： G06F21/64 , G06F21/80 , G11B20/00086 , G11B20/00094 , G11B20/00123 , G11B20/00188 , G11B20/0021 , G11B20/00268 , G11B20/00326 , G11B20/00384 , G11B20/00405 , G11B20/00557 , G11B2020/1259
摘要： The invention relates to a method of storing data on a rewritable data storage medium, to a corresponding storage medium, to a corresponding recording apparatus and to a corresponding playback apparatus. Copy-protective measures require that on rewritable storage media some data must be stored which shall not be modifiable or erasable by consumer end products. A practical problem is the storage of large quantities of such data in a fixed data area. Typically the capacity is limited to a few bits. Meanwhile the amount of copy protection data that needs to be stored may well exceed the storage capacity available in the read-only fixed data area. The invention therefore proposes to write the copy protection data as system data in the recordable data area (4), e.g. as part of the formatting of the medium (1). A cryptographic summary is computed and also stored in the recordable data area (32) or in the fixed data area (2) such that a cryptographic relationship between the fixed data area (2) and the system data area (3) is provided. A playback or replay apparatus will only accept a storage medium with a valid combination of copy protection data and fixed data.
摘要翻译： 本发明涉及一种将可重写数据存储介质上的数据存储到对应的存储介质到对应的记录装置和相应的重放装置的方法。 复制保护措施要求在可重写存储介质上必须存储一些不能由消费者终端产品修改或删除的数据。 一个实际的问题是在固定数据区域中存储大量的这种数据。 通常容量被限制在几位。 同时，需要存储的复制保护数据的数量可能会超过只读固定数据区域中可用的存储容量。 因此，本发明提出将复制保护数据作为系统数据写入可记录数据区域（4），例如， 作为媒体（1）的格式化的一部分。 计算加密摘要并将其存储在可记录数据区域（32）或固定数据区域（2）中，从而提供固定数据区域（2）与系统数据区域（3）之间的密码关系。 播放或重播设备将仅接受具有复制保护数据和固定数据的有效组合的存储介质。
-
公开(公告)号：US07206349B2
公开(公告)日：2007-04-17
申请号：US09959015
申请日：2001-02-22
申请人： Johan Paul Marie Gerard Linnartz , Alexei Gorokhov , Johannes Wilhelmus Maria Bergmans , Antonius Adrianus Cornelis Maria Kalker
发明人： Johan Paul Marie Gerard Linnartz , Alexei Gorokhov , Johannes Wilhelmus Maria Bergmans , Antonius Adrianus Cornelis Maria Kalker
CPC分类号： H04L25/03821 , H04L25/0244 , H04L25/03038 , H04L25/03057 , H04L2025/03414 , H04L2025/03477 , H04L2025/0349 , H04L2025/03605
摘要： Described is a transmission system for transmitting a multicarrier signal from a transmitter (10) to a receiver (20). The multicarrier signal comprises a plurality of subcarriers. The receiver (20) comprises a channel estimator (28) for estimating amplitudes of the subcarriers and for estimating time derivatives of the amplitudes. The receiver (20) further comprises an equalizer (24) for canceling intercarrier interference included in the received multicarrier signal in dependence on the estimated amplitudes and derivatives (29). The channel estimator (28) and/or the equalizer (24) are arranged for exploiting an amplitude correlation between the derivitives of different subcarriers. By making use of this correlation the complexity of the receiver (20) can be substantially reduced.
摘要翻译： 描述了一种用于从发射机（10）向接收机（20）发送多载波信号的传输系统。 多载波信号包括多个子载波。 接收器（20）包括用于估计子载波的振幅并估计时间的幅度的导数的信道估计器（28）。 接收器（20）还包括均衡器（24），用于根据所估计的幅度和导数（29）来消除包含在所接收的多载波信号中的载波间干扰。 信道估计器（28）和/或均衡器（24）被布置为利用不同子载波的导数之间的幅度相关性。 通过利用这种相关性，可以显着地减少接收机（20）的复杂性。
-
-
-
-
-
-
-
-
-
搜索结果
33 条记录 (耗时 0.02 秒)
