公开(公告)号：WO1998014940A1

公开(公告)日：1998-04-09

申请号：PCT/JP1997003461

申请日：1997-09-29

Applicant: SONY CORPORATION ,  KAWAHARA, Minoru ,  YAMASAKI, Kenji

Inventor： SONY CORPORATION

IPC: G11B20/18

CPC classification number: H03M13/2927 ,  G11B5/00813 ,  G11B5/09 ,  G11B20/10527 ,  G11B20/1809 ,  G11B20/1833 ,  G11B20/1876 ,  H03M13/00 ,  H03M13/29 ,  H03M13/2909

Abstract: A reproducing device, error correcting device, and error correcting method which can avoid useless power consumption without sacrificing the reliability of data. The reproducing device is provided with a first error correcting means which detects and corrects the error of data which have been corrected in error and encoded with a product code by using an internal code, a second error correcting means which detects and corrects the error of the data by using an external code, a condition discriminating means which discriminates whether or not the data meet a prescribed condition, and a control means which inhibits the error detection and error correction using the external code in accordance with the discriminated result of the condition discriminating means. Since the error detection and error correction using the external code are inhibited only when the data meet the prescribed condition by discriminating whether or not the data meet the condition, the power consumption by the error detection and error correction using the external code can be saved when the error detection and error correction using only the internal code are sufficient to obtain sufficiently reliable data.

Abstract translation: 可以在不牺牲数据可靠性的情况下避免无用的功耗的再现装置，纠错装置和纠错方法。 再现装置设置有第一纠错装置，其通过使用内部代码来检测和校正已经被错误地校正并且被编码的产品代码的数据的错误;第二错误校正装置，其检测和校正错误， 通过使用外部码的数据，鉴别数据是否符合规定条件的条件判别装置，以及根据条件识别装置的判别结果禁止使用外部码的错误检测和纠错的控制装置 。 由于使用外部代码的错误检测和纠错仅在数据符合规定条件的情况下被判定为是否满足条件时被禁止，所以可以节省通过使用外部代码的错误检测和纠错的功耗， 仅使用内部代码的错误检测和纠错就足以获得足够可靠的数据。

公开(公告)号：WO1986005340A1

公开(公告)日：1986-09-12

申请号：PCT/US1986000363

申请日：1986-02-21

Applicant: SCIENTIFIC ATLANTA, INC.

Inventor： SCIENTIFIC ATLANTA, INC. ,  LUCAS, Keith

IPC: H04B07/12

CPC classification number: H03M13/00 ,  G11B20/1876

Abstract: The system transmits blocks of N signal values preceded by block code words which are used at the receiver (200) to detect errors. In the transmitter (100), the digital value of the intelligence signal being transmitted is sent to a predictor (130), a comparator (150), and an N-word delay line (140). The predictor (130) estimates the next signal value, which is suitably delayed so that the current value and its estimate may be compared. The comparator (150) subtracts each estimated value from the corresponding actual value, temporarily storing the difference, called a ''delta value'', while the entire block of N words is processed. A ''Maximum Delta Encoder'' (160) encodes (with appropriate error correction) the absolute value of the maximum delta value for all N words. The resulting block code word is multiplexed into the data channel ahead of the group of N words to which it corresponds. An ''N Sample Delay'' is used to delay the N words so that the block code word will precede it. In the receiver (200), the block code word is demultiplexed and error corrected to recover the absolute value of the maximum delta value for the group of N words which follow. As each of the N words is received, it is subtracted from a predicted value generated by a predictor circuit (230) identical to the one found in the transmitter (100). If the difference is greater than the maximum delta value for that block, the received signal value represents an error. The error is then concealed by replacing it with the predicted value itself. If the difference is less than or equal to the maximum delta value, the received signal is accepted as correct.

公开(公告)号：WO2006117264A1

公开(公告)日：2006-11-09

申请号：PCT/EP2006/060847

申请日：2006-03-17

Applicant: SIEMENS AKTIENGESELLSCHAFT ,  JANDEWERTH, Theodor

Inventor： JANDEWERTH, Theodor

IPC: H03M13/27 ,  G11B20/18

CPC classification number: H04L1/0083 ,  G10L19/005 ,  G11B20/1876 ,  H04L29/06027

Abstract: Die Erfindung betrifft ein Verfahren zur Übertragung von Nutzdaten, wobei mehrere Abtastwerte (1...34) jeweils zu Blöcken (B0...B6) zusammengefasst und über ein Kommunikationsnetzwerk übermittelt werden. Dabei werden erste Abtastwerte zu einer Reihe (ZRl) von ersten Blöcken (Bl, B3, B5) und zweite Abtastwerte werden zu einer Reihe (ZR2) von zweiten Blöcken (BO, B2, B4, B6) zusammengefasst, wobei jeweils ein Abtastwert eines der ersten Blöcke (Bl, B3, B5) zeitlich benachbart ist zu einem Abtastwert in einem der zweiten Blöcke (BO, B2, B4, B6) . Mit jedem der Blöcke (Bl, B3, B5) wird zumindest ein Parameter übermittelt, der einen statistischen Zusammenhang zwischen Abtastwerten dieses Blocks und benachbarten Abtastwerten in einem anderen Block der jeweils anderen Reihe beschreibt. Durch den Sender (S) werden die Blöcke (B0...B6) mit den Abtastwerten (1...34) und den Parametern zu dem Empfänger (E) übertragen. Bei dem Verlust eines Blocks (B2) während der Übertragung rekonstruiert der Empfänger (E) aus den restlichen Abtastwerten und den statistischen Parametern die mit diesem Block (B2) verloren gegangenen Abtastwerte. Die Kodierung kann auch zur fehlertoleranten oder komprimierten Speicherung von Nutzdaten auf einem Speichermedium verwendet werden.

Abstract translation: 本发明涉及一种用于发送用户数据，其特征在于，多个样品（1 ... 34）被组合以形成块（B0 ... B6）和在通信网络上传送的方法。 在这种情况下，第一样本以多个第一块（ZRL）（BL，B3，B5）和第二样品被组合以形成所述第二块（B0，B2，B4，B6）的数（ZR2），其中在每种情况下的一个样品 第一花纹块（BL，B3，B5）是时间上相邻于第二块（B0，B2，B4，B6）中的一个的样本。 与各块（B1中，B3，B5）的参数被发送至少描述另一行的另一个块这种块的样本和相邻样本之间的统计相关性。 由发射机（S）的块（B0 ... B6）与所述样品（1 ... 34）和所述参数给接收器（E）被发送比较。 一个嵌段（B2）的从剩余的样品和与该块（B2）相关联的统计参数重构接收器（E）的传输过程中损失丢失样本。 编码也可以用于在存储介质上的用户数据的容错或压缩存储。

公开(公告)号：WO02058246A3

公开(公告)日：2003-03-20

申请号：PCT/IB0102644

申请日：2001-12-18

Applicant: KONINKL PHILIPS ELECTRONICS NV

Inventor： BRUEKERS ALPHONS A M L ,  HAITSMA JAAP A ,  VAN DER VEEN MINNE ,  KALKER ANTONIUS A C M

IPC: G06T1/00 ,  G11B20/18 ,  H03M7/30 ,  H03M13/09 ,  H03M13/29 ,  H03M13/47 ,  G11B20/00

CPC classification number: H03M13/47 ,  G06T1/0028 ,  G06T1/005 ,  G06T2201/0202 ,  G11B20/1876 ,  H03M13/096 ,  H03M13/29

Abstract: 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.

Abstract translation: 本发明涉及一种检查信号变换的正确操作的方法，其中输入信号被变换为输出信号。 该方法包括：从输入信号导出第一鲁棒特征; 从输出信号导出第二个鲁棒特征; 比较所述第一和第二鲁棒特征; 在足够相似的情况下，结束所述信号变换的正确操作，并且在相似度不足的情况下，结束所述信号变换的错误操作。 在一个特殊实施例中，应用该方法，其中通过水印技术将第一鲁棒特征嵌入在输入信号中，由此获得的信号被发送到接收机，以便检索对应于所述输入信号的输出信号。

公开(公告)号：WO2003005355A1

公开(公告)日：2003-01-16

申请号：PCT/GB2002/001360

申请日：2002-03-21

Applicant: MACROVISION CORPORATION ,  HEYLEN, Richard, A., A.

Inventor： HEYLEN, Richard, A., A.

IPC: G11B20/00

CPC classification number: G11B20/00927 ,  G11B20/00086 ,  G11B20/10527 ,  G11B20/18 ,  G11B20/1809 ,  G11B20/1876 ,  H03M13/15 ,  H03M13/151 ,  H03M13/2924

Abstract: In a system for protecting encoded digital data, for example, on a digital audio compact disc (CD-DA), specific audio samples are altered to cause spikes which are audible as clicks if played. All of the codewords in the encoded data which contain those altered samples are then identified, and data in each codeword is changed such that on decoding, the codewords will be identified as uncorrectable. Thus, if the decoded data is played by an audio player, error flags are reliably set so that error concealment, such as interpolation, is invoked and the spikes are inaudible. However, a data reader will either pass the uncorrectable data unchanged or will attempt to correct it. Therefore if a copy of the audio data is made, the clicks will be audible on playback.

Abstract translation: 在用于保护编码的数字数据的系统中，例如在数字音频光盘（CD-DA）上，特定的音频样本被改变以引起如果播放时作为点击听起来的尖峰。 然后识别包含那些改变的样本的编码数据中的所有码字，并且改变每个码字中的数据，使得在解码时，码字将被识别为不可校正。 因此，如果由音频播放器播放解码的数据，则可靠地设置错误标志，使得诸如插值之类的错误隐藏被调用并且峰值听不见。 但是，数据读取器将不通过不可修正的数据，或者尝试更正它。 因此，如果制作了音频数据的副本，则播放时的点击次数将是可听见的。

公开(公告)号：WO1998023037A1

公开(公告)日：1998-05-28

申请号：PCT/CA1997000860

申请日：1997-11-14

Applicant: ELLIS, Randy, E. ,  SARKAR, Nilanjan ,  JENKINS, Michael, A.

IPC: H03M01/66

CPC classification number: H03M1/661 ,  G11B20/10527 ,  G11B20/1876

Abstract: The present invention provides a method for digital signal processing, referred to as sample-estimate-hold signal reconstruction, which provides a method of reconstructing output signals more representative of the original input analog signal than the conventional signal processing procedures used in D/A conversion, referred to as sample-hold signal reconstruction. The method uses the history of the analog signal being reconstructed from its digitized form to produce output values which reduce the absolute difference between the integral of the actual signal and the integral of its digital representation over local intervals in the range of the signal. The method is applicable to a wide range of signal processing applications including force-reflection systems, audio and data compression to mention just a few.

Abstract translation: 本发明提供一种称为采样 - 估计保持信号重构的数字信号处理方法，该方法提供了重现与原始输入模拟信号更相似的输出信号的方法，而不是D / A转换中使用的常规信号处理过程 ，称为采样保持信号重建。 该方法使用从其数字化形式重建的模拟信号的历史来产生输出值，其在信号范围内通过局部间隔减小实际信号的积分与其数字表示的积分之间的绝对差。 该方法适用于广泛的信号处理应用，包括力反射系统，音频和数据压缩等等。

公开(公告)号：WO9633559A3

公开(公告)日：1996-12-27

申请号：PCT/IB9600229

申请日：1996-03-18

Applicant: PHILIPS ELECTRONICS NV ,  PHILIPS NORDEN AB

Inventor： IJTSMA POPE

IPC: G11B20/18 ,  H04B1/66 ,  H04L1/00

CPC classification number: H04L1/004 ,  G11B20/1876

Abstract: Arrangement for carrying out a concealment on an information signal, the information signal comprising subsequent signal blocks (padding sequence), each signal block comprising a sequence of alternate first frames (F0, F2, F4, 104) and second frames (F1, F3, F5, 105) of different lenghts, expressed in numbers of bits, the number of first frames and second frames in a signal block being N1 (25) and N1-1 (24) respectively. The last frame in a signal block (F48) and the first frame (F0) in a subsequent signal block are a first frame. The arrangement comprises an input terminal (100) for receiving the information signal, concealment means (109) having an input (108) coupled to the input terminal and an output (126) which is coupled to an output terminal (122) for supplying the concealed information signal. The concealment means (109) are adapted to conceal the information in response to a concealment control signal. More specifically, the concealment means are adapted to conceal a number of M (21) subsequent frames, M being an odd integer smaller than 2.N1-1, the concealment means comprising memory means (118) for storing M+1 subsequent frames directly preceding the M subsequent frames to be concealed. For various situations concealment is realized by appropriately generating frames for replacing the frames to be concealed, using the frames stored in the memory (118).

公开(公告)号：WO1984002999A1

公开(公告)日：1984-08-02

申请号：PCT/JP1984000025

申请日：1984-01-31

Applicant: SONY CORPORATION ,  FUKAMI, Tadashi ,  ODAKA, Kentaro

Inventor： SONY CORPORATION

IPC: G11B05/09

CPC classification number: G11B27/3027 ,  G11B20/1813 ,  G11B20/1876 ,  G11B27/032 ,  G11B27/036 ,  G11B2220/90 ,  G11B2220/913

Abstract: A PCM signal processing apparatus provides correction processing so that no pulse noise (abnormal sound) is generated by the reproduction of erroneous data (e.g., unerased data) that has not been recognized as an error from an error-detecting code added to the data. The format of the transmission data processed by the apparatus is such that one block of data is constituted by a plurality of PCM data items, and one segment of data is constituted by a plurality of blocks, each block being provided with a data error detecting code (CRC) and a segment address (S-ADR) to which the block belongs. A detection circuit (15) is provided which detects whether or not the segment addresses of reproduced data within each block within one segment are the same. When the detection circuit (15) detects a non-coincidence, an interpolation circuit (13) is actuated in reponse to the detection output and effects some form of correction processing, such as mean value interpolation, higher-order interpolation, or the holding of the previous value.

公开(公告)号：WO2010050446A1

公开(公告)日：2010-05-06

申请号：PCT/JP2009/068357

申请日：2009-10-27

Applicant: ソニー株式会社 ,  宮内 俊之 ,  吉持 直樹

Inventor： 宮内　俊之 ,  吉持　直樹

IPC: G11B20/18 ,  H03M13/27 ,  H03M13/29

CPC classification number: H03M13/2909 ,  G11B20/1833 ,  G11B20/1866 ,  G11B20/1876 ,  G11B2020/1853 ,  G11B2220/2516 ,  G11B2220/2537 ,  H03M13/1102 ,  H03M13/15 ,  H03M13/1515 ,  H03M13/2707 ,  H03M13/2721 ,  H03M13/2778 ,  H03M13/2957

Abstract: 本発明は、積符号の両方の符号に対してバースト誤りを分散させることができるデータ処理装置および方法、並びにプログラムに関する。 ブロック単位インタリーバは、積符号のうち、ND×NB×NAビットに対して、データを、NBビット毎（＝ブロック毎）に、一方の方向としての列方向の順に入力し、右斜め下方向の順に読み出す処理であるインタリーブＡを行う。次に、ブロック単位インタリーバは、積符号のうち、Ｐに示される内符号のパリティ部分である（NC-ND）×NB×NAビットに対して、データを、NBビット毎に、一方の方向としての列方向の順に入力し、他方の方向としての行方向の順に読み出す処理であるインタリーブＢを行う。本発明は、例えば、記録再生装置に適用することができる。

Abstract translation: 提供了可以分散产品代码的内部代码和外部代码的突发错误的数据处理设备，方法和程序。 块单元交织器在乘积代码之间的ND×NB×NA比特上执行交织A，然后在（NC-ND）×NB×NA比特上的交织B作为P中指示的内部码的奇偶部分 码。 交错A将按照列方向的顺序将每个NB位（即，对于每个块）输入数据作为其中一个方向，并且以向右下方向倾斜的顺序执行读出。 接下来，交织B将按列方向的顺序的每个NB比特的数据作为其中一个方向输入，并以行方向的顺序作为另一个方向执行读出。 本发明可以应用于例如记录/再现设备。

公开(公告)号：WO2007088139A1

公开(公告)日：2007-08-09

申请号：PCT/EP2007/050772

申请日：2007-01-26

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION ,  IBM UNITED KINGDOM LIMITED ,  BUI, Nhan, Xuan ,  CHERUBINI, Giovanni ,  ELEFTHERIOU, Evangelos ,  HUTCHINS, Robert, Allen ,  JAQUETTE, Glen, Alan ,  JELITTO, Jens ,  OELCER, Sedat ,  TAYLOR, Mark, Allan

Inventor： BUI, Nhan, Xuan ,  CHERUBINI, Giovanni ,  ELEFTHERIOU, Evangelos ,  HUTCHINS, Robert, Allen ,  JAQUETTE, Glen, Alan ,  JELITTO, Jens ,  OELCER, Sedat ,  TAYLOR, Mark, Allan

IPC: G11B27/10 ,  G11B20/10

CPC classification number: G11B27/36 ,  G11B20/10037 ,  G11B20/10046 ,  G11B20/10055 ,  G11B20/10212 ,  G11B20/10259 ,  G11B20/1403 ,  G11B20/1876 ,  G11B27/10 ,  G11B2020/10592 ,  G11B2220/90 ,  G11B2220/95

Abstract: Provided is a read channel, storage drive, and method to process signals read from a storage medium. At least one data channel including an interpolator and equalizer and a servo channel includes an interpolator. A timing recovery function processes a timing error from the interpolator in the servo channel to calculate interpolation timing information used by the interpolator to interpolate a servo channel signal. A path is coupled to the timing recovery function and the interpolator in the at least one data channel to communicate the interpolation timing information to the interpolator in the at least one data channel. The interpolator in the at least one data channel is configured to use the interpolation timing information to interpolate an asynchronous data channel signal.

Abstract translation: 提供了一种用于处理从存储介质读取的信号的读通道，存储驱动器和方法。 包括内插器和均衡器和伺服信道的至少一个数据信道包括内插器。 定时恢复功能处理来自伺服信道中的内插器的定时误差，以计算内插器使用的内插定时信息来内插伺服信道信号。 路径耦合到至少一个数据信道中的定时恢复功能和内插器，以将内插定时信息传送到至少一个数据信道中的内插器。 至少一个数据信道中的内插器被配置为使用内插定时信息内插异步数据信道信号。