公开(公告)号：US20080284624A1

公开(公告)日：2008-11-20

申请号：US11749711

申请日：2007-05-16

申请人： Roy D. Cideciyan ,  Evangelos S. Eleftheriou ,  Thomas Mittelholzer ,  Paul J. Seger ,  Keisuke Tanaka

发明人： Roy D. Cideciyan ,  Evangelos S. Eleftheriou ,  Thomas Mittelholzer ,  Paul J. Seger ,  Keisuke Tanaka

IPC分类号： H03M7/00

CPC分类号： H03M5/145 ,  G11B20/1426 ,  G11B2020/1446 ,  G11B2020/1473 ,  G11B2220/90 ,  G11B2220/956

摘要： An unencoded m-bit data input sequence is divided into a block of n bits and a block of m−n bits. The block of n bits is divided into a first set of n+1 encoded bits, wherein at least one of P1 subblocks of the first set satisfies a G, M and I constraints. The first set of n+1 encoded bits is mapped into a second set of n+1 encoded bits wherein at least one of P2 subblocks of the second set gives rise to at least Q1 transitions after 1/(1+D2) preceding. A second set of n+1 encoded bits is divided into P3 encoded subblocks and the P3 encoded subblocks are interleaved among (m−n)/s unencoded symbols so as to form a (m+1)-bit output sequence codeword which is then stored on a data storage medium.

摘要翻译： 未编码的m位数据输入序列被分成n位块和m-n位块。 n位的块被划分为第一组n + 1个编码比特，其中第一组的P1个子块中的至少一个满足G，M和I约束。 第一组n + 1个编码比特被映射到n + 1编码比特的第二组，其中第二组的P2个子块中的至少一个在1 /（1 + D 2）之后产生至少Q1个转换 ）。 第二组n + 1编码比特被分成P3编码子块，并且P3编码子块在（mn）/ s个未编码符号之间进行交织，以形成第（m + 1）比特的输出序列码字，然后存储在 数据存储介质。

公开(公告)号：US20090027242A1

公开(公告)日：2009-01-29

申请号：US12185095

申请日：2008-08-03

申请人： Roy D. Cideciyan ,  Evangelos S. Eleftheriou ,  Thomas Mittelholzer ,  Paul J. Seger ,  Keisuke Tanaka

发明人： Roy D. Cideciyan ,  Evangelos S. Eleftheriou ,  Thomas Mittelholzer ,  Paul J. Seger ,  Keisuke Tanaka

IPC分类号： H03M7/00

CPC分类号： H03M5/145 ,  G11B20/1426 ,  G11B2020/1446 ,  G11B2020/1473 ,  G11B2220/90 ,  G11B2220/956

摘要： An unencoded m-bit data input sequence is divided into a block of n bits and a block of m-n bits. The block of n bits is divided into a first set of n+1 encoded bits, wherein at least one of P1 subblocks of the first set satisfies a G, M and I constraints. The first set of n+1 encoded bits is mapped into a second set of n+1 encoded bits wherein at least one of P2 subblocks of the second set gives rise to at least Q1 transitions after 1/(1+D2) precoding. A second set of n+1 encoded bits is divided into P3 encoded subblocks and the P3 encoded subblocks are interleaved among (m−n)/s unencoded symbols so as to form a (m+1)-bit output sequence codeword which is then stored on a data storage medium.

摘要翻译： 未编码的m位数据输入序列被分成n位块和m-n位块。 n位的块被划分为第一组n + 1个编码比特，其中第一组的P1个子块中的至少一个满足G，M和I约束。 第一组n + 1个编码比特被映射到n + 1编码比特的第二组，其中第二组的P2子块中的至少一个在1 /（1 + D2）预编码之后产生至少Q1个转换。 第二组n + 1编码比特被分成P3编码子块，并且P3编码子块在（mn）/ s个未编码符号之间进行交织，以形成第（m + 1）比特的输出序列码字，然后存储在 数据存储介质。

公开(公告)号：US07626520B2

公开(公告)日：2009-12-01

申请号：US12042862

申请日：2008-03-05

申请人： Makoto Noda

发明人： Makoto Noda

IPC分类号： H03M5/00

CPC分类号： G11B20/1426 ,  G11B2020/1446 ,  G11B2020/1449 ,  G11B2020/1473 ,  H03M5/145

摘要： An encoding method is disclosed for use with an encoding apparatus for carrying out variable-length conversion encoding involving a look-ahead operation of at least either one information word or one code word upon encoding. The encoding method includes the step of performing conversion encoding in such a manner as to permit decoding of encoded words in units of a code word.

摘要翻译： 公开了一种与编码装置一起使用的编码方法，用于在编码时执行涉及至少一个信息字或一个码字的预读操作的可变长度转换编码。 编码方法包括以允许以码字为单位对编码字进行解码的方式进行转换编码的步骤。

公开(公告)号：US20080218388A1

公开(公告)日：2008-09-11

申请号：US12042862

申请日：2008-03-05

申请人： Makoto Noda

发明人： Makoto Noda

IPC分类号： H03M7/40

CPC分类号： G11B20/1426 ,  G11B2020/1446 ,  G11B2020/1449 ,  G11B2020/1473 ,  H03M5/145

摘要： An encoding method is disclosed for use with an encoding apparatus for carrying out variable-length conversion encoding involving a look-ahead operation of at least either one information word or one code word upon encoding. The encoding method includes the step of performing conversion encoding in such a manner as to permit decoding of encoded words in units of a code word.

摘要翻译： 公开了一种与编码装置一起使用的编码方法，用于在编码时执行涉及至少一个信息字或一个码字的预读操作的可变长度转换编码。 编码方法包括以允许以码字为单位对编码字进行解码的方式进行转换编码的步骤。

公开(公告)号：US20020050935A1

公开(公告)日：2002-05-02

申请号：US09983948

申请日：2001-10-26

发明人： Tsuyoshi Oki ,  Atsushi Hayami

IPC分类号： H03M005/00

CPC分类号： G11B20/1426 ,  G11B2020/1461 ,  G11B2020/1465 ,  G11B2020/1473

摘要： A coding table portion includes six coding tables each storing a code word and status information indicating a coding table for use in modulating a next input data word in order to obtain a next code word which satisfies a predetermined run length restriction rule even if the next code word is coupled directly with the preceding code word, corresponding to each input data word. In the coding table portion, the code words and status informations allocated corresponding to input data words of a number set up preliminarily in succession from the highest appearance frequency to a lower one in one or more coding tables of the plural coding tables are replaced with code words having smaller RDSs and status informations allocated corresponding to other input data words in the same coding table. Consequently, the input data word is modulated using the six coding tables.

公开(公告)号：US07679535B2

公开(公告)日：2010-03-16

申请号：US12185095

申请日：2008-08-03

申请人： Roy D. Cideciyan ,  Evangelos S. Eleftheriou ,  Thomas Mittelholzer ,  Paul J. Seger ,  Keisuke Tanaka

发明人： Roy D. Cideciyan ,  Evangelos S. Eleftheriou ,  Thomas Mittelholzer ,  Paul J. Seger ,  Keisuke Tanaka

IPC分类号： H03M5/00

CPC分类号： H03M5/145 ,  G11B20/1426 ,  G11B2020/1446 ,  G11B2020/1473 ,  G11B2220/90 ,  G11B2220/956

摘要： An unencoded m-bit data input sequence is divided into a block of n bits and a block of m−n bits. The block of n bits is divided into a first set of n+1 encoded bits, wherein at least one of P1 subblocks of the first set satisfies a G, M and I constraints. The first set of n+1 encoded bits is mapped into a second set of n+1 encoded bits wherein at least one of P2 subblocks of the second set gives rise to at least Q1 transitions after 1/(1+D2) precoding. A second set of n+1 encoded bits is divided into P3 encoded subblocks and the P3 encoded subblocks are interleaved among (m−n)/s unencoded symbols so as to form a (m+1)-bit output sequence codeword which is then stored on a data storage medium.

摘要翻译： 未编码的m位数据输入序列被分成n位块和m-n位块。 n位的块被划分为第一组n + 1个编码比特，其中第一组的P1个子块中的至少一个满足G，M和I约束。 第一组n + 1个编码比特被映射到n + 1编码比特的第二组，其中第二组的P2子块中的至少一个在1 /（1 + D2）预编码之后产生至少Q1个转换。 将第n + 1编码比特的第二组划分为P3编码子块，并且在（m-n）/ s个未编码符号之间交织P3编码子块，以形成第（m + 1）比特的输出序列码字 存储在数据存储介质上。

公开(公告)号：US07486208B2

公开(公告)日：2009-02-03

申请号：US11749711

申请日：2007-05-16

申请人： Roy D. Cideciyan ,  Evangelos S. Eleftheriou ,  Thomas Mittelholzer ,  Paul J. Seger ,  Keisuke Tanaka

发明人： Roy D. Cideciyan ,  Evangelos S. Eleftheriou ,  Thomas Mittelholzer ,  Paul J. Seger ,  Keisuke Tanaka

IPC分类号： H03M5/00

CPC分类号： H03M5/145 ,  G11B20/1426 ,  G11B2020/1446 ,  G11B2020/1473 ,  G11B2220/90 ,  G11B2220/956

摘要： An unencoded m-bit data input sequence is divided into a block of n bits and a block of m−n bits. The block of n bits is divided into a first set of n+1 encoded bits, wherein at least one of P1 subblocks of the first set satisfies a G, M and I constraints. The first set of n+1 encoded bits is mapped into a second set of n+1 encoded bits wherein at least one of P2 subblocks of the second set gives rise to at least Q1 transitions after 1/(1+D2) precoding. A second set of n+1 encoded bits is divided into P3 encoded subblocks and the P3 encoded subblocks are interleaved among (m−n)/s unencoded symbols so as to form a (m+1)-bit output sequence codeword which is then stored on a data storage medium.

摘要翻译： 未编码的m位数据输入序列被分成n位块和m-n位块。 n位的块被划分为第一组n + 1个编码比特，其中第一组的P1个子块中的至少一个满足G，M和I约束。 第一组n + 1个编码比特被映射到n + 1编码比特的第二组，其中第二组的P2子块中的至少一个在1 /（1 + D2）预编码之后产生至少Q1个转换。 第二组n + 1编码比特被分成P3编码子块，并且P3编码子块在（mn）/ s个未编码符号之间进行交织，以形成第（m + 1）比特的输出序列码字，然后存储在 数据存储介质。

公开(公告)号：US07030789B1

公开(公告)日：2006-04-18

申请号：US11002970

申请日：2004-12-01

申请人： Roy D. Cideciyan ,  Evangelos S. Eleftheriou ,  Richard Leo Galbraith ,  Thomas Mittelholzer ,  Travis Oenning

发明人： Roy D. Cideciyan ,  Evangelos S. Eleftheriou ,  Richard Leo Galbraith ,  Thomas Mittelholzer ,  Travis Oenning

IPC分类号： H03M7/02

CPC分类号： H03M7/04 ,  G06F11/08 ,  G11B20/1426 ,  G11B2020/1473 ,  H03M5/145 ,  H03M7/06 ,  H03M13/31

摘要： Techniques are provided for applying modulation constraints to data by using periodically changing symbol mappings to replace certain prohibited error prone data patterns. Initially, user data in a first base is mapped to integers of a second base using a base conversion technique. The integers in the second base correspond to symbols. Subsequently, periodically changing symbol mappings are performed during which prohibited symbols generated during base conversion are mapped to permitted symbols. The periodically changing symbol mappings occur in multiple phases, and the prohibited symbols are different in each phase. The resulting data is processed by a precoder in some embodiments.

摘要翻译： 提供了通过使用周期性变化的符号映射来替代某些禁止的易错数据模式来向数据应用调制约束的技术。 最初，使用基本转换技术将第一基站中的用户数据映射到第二基站的整数。 第二个碱基中的整数对应于符号。 随后，执行周期性地改变的符号映射，其中在基本转换期间产生的禁止符号被映射到允许的符号。 周期性变化的符号映射发生在多个阶段，禁止符号在每个阶段都不同。 在一些实施例中，所生成的数据由预编码器处理。

公开(公告)号：US06492920B2

公开(公告)日：2002-12-10

申请号：US09983948

申请日：2001-10-26

申请人： Tsuyoshi Oki ,  Atsushi Hayami

发明人： Tsuyoshi Oki ,  Atsushi Hayami

IPC分类号： H03M700

CPC分类号： G11B20/1426 ,  G11B2020/1461 ,  G11B2020/1465 ,  G11B2020/1473

摘要： A coding table portion includes six coding tables each storing a code word and status information indicating a coding table for use in modulating a next input data word in order to obtain a next code word which satisfies a predetermined run length restriction rule even if the next code word is coupled directly with the preceding code word, corresponding to each input data word. In the coding table portion, the code words and status informations allocated corresponding to input data words of a number set up preliminarily in succession from the highest appearance frequency to a lower one in one or more coding tables of the plural coding tables are replaced with code words having smaller RDSs and status informations allocated corresponding to other input data words in the same coding table. Consequently, the input data word is modulated using the six coding tables.

摘要翻译： 编码表部分包括六个编码表，每个编码表存储代码字和指示用于调制下一个输入数据字的编码表的状态信息，以获得满足预定行程长度限制规则的下一个代码字，即使下一个代码 字直接与先前的代码字耦合，对应于每个输入数据字。 在编码表部分中，将与多个编码表的一个或多个编码表中的从最高出现频率连续预先设置的数字的输入数据字分配的代码字和状态信息替换为代码 在相同的编码表中对应于其他输入数据字分配的具有较小RDS和状态信息的字。 因此，使用六个编码表调制输入数据字。

公开(公告)号：US5818367A

公开(公告)日：1998-10-06

申请号：US612952

申请日：1996-03-08

申请人： Toru Okazaki ,  Shunji Yoshimura

发明人： Toru Okazaki ,  Shunji Yoshimura

IPC分类号： G11B20/10 ,  G11B20/14 ,  H03M5/14 ,  H03M7/14 ,  H03M7/20 ,  H03M7/46 ,  H03M13/00 ,  H03M13/09 ,  H03M13/31 ,  H04L25/49 ,  H03M7/42

CPC分类号： G11B20/1426 ,  H03M13/31 ,  H03M5/14 ,  H03M5/145 ,  H03M7/46 ,  G11B2020/1461 ,  G11B2020/1465 ,  G11B2020/1473

摘要： In the present invention, a partly duplexed conversion table is used as a conversion table for converting an M-bit based data string directly into an N-bit based code string without using margin bits. This conversion table is constituted by first and second sub-tables including plural code groups, respectively. The plural code groups include different codes for the same input data. The second sub-table is a table which is partly duplexed with the first sub-table and is produced by allocating different codes to data from first input data to second input data in the first sub-table. The first and second sub-tables are so designed that code sets of the duplexed portions take variants of digital sum variations which are opposite in sign. Codes are allocated to all the code groups in the duplexed portions of the first and second sub-tables with respect to input data sequentially from a code having a maximum absolute value of variant of the digital sum variation. Thus, according to the present invention, low frequency components of modulated signals may be restricted properly.

摘要翻译： PCT No.PCT / JP95 / 01364 Sec。 371日期：1996年3月8日 102（e）日期1996年3月8日PCT提交1995年7月7日PCT公布。 第WO96 / 02054号公报 日期1996年1月25日在本发明中，部分双工转换表用作用于将基于M位的数据串直接转换成基于N位的代码串而不使用边际位的转换表。 该转换表分别由包括多个代码组的第一和第二子表构成。 多个代码组包括用于相同输入数据的不同代码。 第二子表是与第一子表部分双工的表，并且通过从第一子表中的第一输入数据到第二输入数据的数据分配不同的代码而产生。 第一和第二子表被设计成使得双工部分的代码集获得与符号相反的数字和变化的变体。 从具有数字和变化的变型的最大绝对值的代码顺序地，相对于输入数据将码分配给第一和第二子表的双工部分中的所有代码组。 因此，根据本发明，可以适当地限制调制信号的低频分量。