公开(公告)号：US20050174262A1

公开(公告)日：2005-08-11

申请号：US11031529

申请日：2005-01-10

申请人： Jun Lee ,  Joo-hyun Lee ,  Kyu-suk Lee ,  Jae-jin Lee

发明人： Jun Lee ,  Joo-hyun Lee ,  Kyu-suk Lee ,  Jae-jin Lee

IPC分类号： G11B20/10 ,  G11B20/14 ,  H03M5/14 ,  H03M7/00

CPC分类号： H03M5/145 ,  G11B20/1426 ,  G11B2020/1434 ,  G11B2020/1446

摘要： Provided are a rate 13/15 MTR code encoding/decoding method and apparatus. The encoding method includes: generating a predetermined rate-13/15 MTR code in which 13-bit data corresponds to 15-bit data; outputting input 13-bit data as a 15-bit codeword according to the rate-13/15 MTR code; checking whether codewords satisfy a predetermined constraint condition by connecting the 15-bit codeword and a subsequent 15-bit codeword; and converting specific bits of the codewords if the codewords violate the constraint condition and not converting the codewords if the codewords do not violate the constraint condition. The rate-13/15 MTR (j=2, k=8) code includes: 8192 codewords obtained to prevent the number of consecutive transitions from becoming 3 at code boundaries in a modulation coding process. Data can be reliably reproduced with high write density, and a large amount of data can be stored in and reproduced from a magnetic recording information storage medium.

摘要翻译： 提供了一种速率13/15的MTR码编码/解码方法和装置。 编码方法包括：生成13比特数据对应于15比特数据的预定速率-13 / 15MTR码; 根据速率-13 / 15MTR码输出13位数据作为15位码字; 通过连接15位码字和随后的15位码字来检查码字是否满足预定约束条件; 以及如果所述码字违反所述约束条件并且如果所述码字不违反所述约束条件则不转换所述码字，则转换所述码字的特定比特。 速率-13 / 15MTR（j = 2，k = 8）码包括：8192个码字，用于防止在调制编码过程中在码边界处连续转换的数量变为3。 可以以高写入密度可靠地再现数据，并且可以将大量数据存储在磁记录信息存储介质中并从磁记录信息存储介质再现。

公开(公告)号：US20030123173A1

公开(公告)日：2003-07-03

申请号：US10037753

申请日：2002-01-02

申请人： International Business Machine Corporation

发明人： Mario Blaum ,  Glen Alan Jaquette ,  Brian Harry Marcus ,  Constantin Michael Melas

IPC分类号： G11B005/09

CPC分类号： G11B20/10009 ,  G11B5/00813 ,  G11B5/09 ,  G11B20/1426 ,  G11B2020/1434 ,  G11B2020/1446

摘要： Provided is a method, system, and program for storing input groups of uncoded binary data on a storage medium. A plurality of uncoded data blocks in a data stream are received. An encoded data stream is obtained from concatenating successive encoded blocks such that the encoded data stream includes a predetermined bit pattern comprising a plurality of bits. The bit pattern always occurs within a first number of bits and two occurrences of a null1null or null0null occur within a second number of bits. The encoded data blocks are stored on the storage medium.

摘要翻译： 提供了一种在存储介质上存储未编码二进制数据的输入组的方法，系统和程序。 接收数据流中的多个未编码的数据块。 编码数据流是从连续的连续编码块中获得的，使得编码数据流包括包含多个位的预定位模式。 位模式总是出现在第一位数中，并且在第二位数内出现两次“1”或“0”。 编码数据块被存储在存储介质上。

公开(公告)号：US06570839B2

公开(公告)日：2003-05-27

申请号：US09921805

申请日：2001-08-03

申请人： Noboru Kimura ,  Ronald Vitullo ,  Yasuhiro Yamazaki

发明人： Noboru Kimura ,  Ronald Vitullo ,  Yasuhiro Yamazaki

IPC分类号： G11B700

CPC分类号： G11B27/3027 ,  G11B7/0045 ,  G11B7/00456 ,  G11B7/005 ,  G11B7/0079 ,  G11B7/013 ,  G11B7/126 ,  G11B11/10506 ,  G11B11/10513 ,  G11B11/10515 ,  G11B11/1053 ,  G11B11/10597 ,  G11B19/00 ,  G11B19/02 ,  G11B19/12 ,  G11B20/10 ,  G11B20/10009 ,  G11B20/1258 ,  G11B20/1262 ,  G11B20/1426 ,  G11B20/1833 ,  G11B2007/0006 ,  G11B2020/1434 ,  G11B2220/2525

摘要： An optical disk includes a plurality of tracks that are arranged in a predetermined number of zones. Each track is divided into a plurality of sectors. The sector number is different in each zone. The sector increases in number moving outwardly on the disk. The optical disk also includes a format marking. The format marking includes a sector field for each sector. The format marking is erasably recorded.

摘要翻译： 光盘包括布置在预定数量的区域中的多个轨迹。 每个轨道被分成多个扇区。 每个区域的扇区号不同。 扇区数量在磁盘上向外移动。 光盘还包括格式标记。 格式标记包括每个扇区的扇区字段。 格式标记可擦除记录。

公开(公告)号：US06343061B1

公开(公告)日：2002-01-29

申请号：US09228245

申请日：1999-01-11

申请人： Noboru Kimura ,  Ronald Vitullo ,  Yasuhiro Yamazaki

发明人： Noboru Kimura ,  Ronald Vitullo ,  Yasuhiro Yamazaki

IPC分类号： G11B700

CPC分类号： G11B27/3027 ,  G11B7/0045 ,  G11B7/00456 ,  G11B7/005 ,  G11B7/0079 ,  G11B7/013 ,  G11B7/126 ,  G11B11/10506 ,  G11B11/10513 ,  G11B11/10515 ,  G11B11/1053 ,  G11B11/10597 ,  G11B19/00 ,  G11B19/02 ,  G11B19/12 ,  G11B20/10 ,  G11B20/10009 ,  G11B20/1258 ,  G11B20/1262 ,  G11B20/1426 ,  G11B20/1833 ,  G11B2007/0006 ,  G11B2020/1434 ,  G11B2220/2525

摘要： An apparatus for recording data includes a source of digital data arranged into data words having a given number of bits and a converter that converts the data words to code words having one more bit than the given number using a group code recording format. The code words include a binary signal having first and second binary values at a given clock interval determined by a bit rate of the code words. The apparatus also includes a storage disk having a recording surface, a drive member for rotatably driving the disk, a laser having a focused beam, and a control assembly for directing the laser at the recording surface so that the beam accesses one of a plurality of concentric tracks on the recording surface. A circuit assembly provides a driving signal utilized for generating energizing pulses having a duration less than the clock interval when the binary signal has the first binary value. A pulse generator applies the energizing pulses to the laser to activate the laser responsive to the energizing pulses so that the laser is turned on and off even when the binary signal does not change value from one bit to the next. A high density optical disk including a plurality of tracks arranged in a predetermined number of zones may be utilized in conjunction the apparatus, which may be further incorporated into an optical data storage and retrieval system.

摘要翻译： 用于记录数据的装置包括布置成具有给定位数的数据字的数字数据的源和使用组码记录格式将数据字转换成比给定数字多一位的码字的转换器。 代码字包括在由码字的比特率确定的给定时钟间隔处具有第一和第二二进制值的二进制信号。 该设备还包括具有记录表面的存储盘，用于可旋转地驱动盘的驱动构件，具有聚焦光束的激光器和用于将激光器引导到记录表面处的控制组件，使得光束访问多个 记录表面上的同心轨迹。 电路组件提供用于在二进制信号具有第一二进制值的情况下产生具有小于时钟间隔的持续时间的激励脉冲的驱动信号。 脉冲发生器将激励脉冲施加到激光器以响应于激励脉冲来激活激光器，使得即使当二进制信号不将值从一个位改变到下一个位时，激光也被接通和关断。 包括布置在预定数量的区域中的多个轨道的高密度光盘可以结合使用，该装置可以进一步并入到光学数据存储和检索系统中。

公开(公告)号：US06317558B1

公开(公告)日：2001-11-13

申请号：US08970652

申请日：1997-11-14

申请人： François Bourdon ,  Claude Chapel ,  Jean-Yves Quintard

发明人： François Bourdon ,  Claude Chapel ,  Jean-Yves Quintard

IPC分类号： H04N764

CPC分类号： G11B20/1426 ,  G11B20/12 ,  G11B2020/1434

摘要： The coder makes it possible to convert a succession of video and/or audio blocks, consisting of binary combinations of N bits, into a succession of binary data blocks consisting of combinations of N bits, each binary data block corresponding to one video and/or audio block. The coder codes each end binary combination 0 or 2N−1 of each video and/or audio block in the form of a coded binary combination consisting of a nature information item In and a position information item Ip. The nature information item In gives the nature, 0 or 2N−1, of the end binary combination, and the position information item Ip gives the position which the end combination occupies in the video block. Conversely, the decoder makes it possible to reconstruct a succession of video and/or audio blocks, consisting of binary combinations of N bits, from a succession of binary data blocks such as the ones mentioned above, that is to say ones for which the end combinations 0 or 2N−1 of each video and/or audio block are coded in the form of a nature information item In and a position information item Ip.

摘要翻译： 编码器使得可以将由N位的二进制组合组成的一系列视频和/或音频块转换成由N位的组合组成的一系列二进制数据块，每个二进制数据块对应于一个视频和/或 音频块。 编码器以由自然信息项In和位置信息项Ip组成的编码二进制组合的形式对每个视频和/或音频块的每一端二进制组合0或2N-1进行编码。 自然信息项目In给出结束二进制组合的性质，即0或2N-1，并且位置信息项目Ip给出了视频块中结束组合占据的位置。 相反，解码器使得可以从诸如上述的一系列二进制数据块重建由N位的二进制组合组成的一系列视频和/或音频块，也就是说，结束 每个视频和/或音频块的组合0或2N-1以自然信息项In和位置信息项Ip的形式进行编码。

公开(公告)号：US06233289B1

公开(公告)日：2001-05-15

申请号：US08895126

申请日：1997-07-16

申请人： Lisa Fredrickson

发明人： Lisa Fredrickson

IPC分类号： H03D100

CPC分类号： H04L1/0059 ,  G11B20/10009 ,  G11B20/1426 ,  G11B2020/1434 ,  H03M5/145 ,  H04L1/0054

摘要： Signals indicative of unencoded input data are encoded into a plurality of encoded sequences. A first subset of the plurality of encoded sequences are encoded according to a k constrained code of rate x/y and a second subset of the plurality of unencoded sequences are encoded according to a k constrained code of rate m/n wherein x/y≠m/n. The encoded sequences are transmitted to a partial response channel subject to noise. The encoded sequences are transmitted from the channel to a Viterbi detector having a trellis structure with a preselected, time-dependent pattern to create a time varying trellis structure for limiting a maximum length of parallel paths therethrough. The encoded sequences are detected with a Viterbi detector to provide detected, encoded sequences. The detected, encoded sequences are then decoded to provide an estimate of the input data.

摘要翻译： 指示未编码的输入数据的信号被编码成多个编码序列。 多个编码序列的第一子集根据速率为x / y的ak约束码进行编码，并且多个未编码序列的第二子集根据速率m / n的ak约束码进行编码，其中x / y> / n。 经编码的序列被发送到受噪声影响的部分响应信道。 编码的序列从通道传输到具有预选的时间依赖图案的网格结构的维特比检测器，以产生用于限制通过其的平行路径的最大长度的时变网格结构。 用维特比检测器检测编码的序列，以提供检测到的编码序列。 然后对所检测的编码序列进行解码以提供输入数据的估计。

公开(公告)号：US5949357A

公开(公告)日：1999-09-07

申请号：US782182

申请日：1997-01-13

申请人： Kelly K. Fitzpatrick ,  Cory Modlin

发明人： Kelly K. Fitzpatrick ,  Cory Modlin

IPC分类号： G11B20/10 ,  G11B20/14 ,  H03M5/14 ,  H03M7/00

CPC分类号： G11B20/10055 ,  G11B20/10009 ,  G11B20/1426 ,  H03M5/145 ,  G11B2020/1434

摘要： A data channel, such as a magnetic recording/playback channel implements a time-varying maximum-transition-run code such that the code allows three consecutive transitions while it removes a dominant plus-minus-plus error-event and does not permit of four or more consecutive transitions.

摘要翻译： 诸如磁记录/重放通道的数据通道实现时变最大过渡运行代码，使得代码允许三个连续的转换，同时它消除了主要的加 - 减加错误事件，并且不允许四 或更多的连续过渡。

公开(公告)号：US5635933A

公开(公告)日：1997-06-03

申请号：US497182

申请日：1995-06-30

申请人： James Fitzpatrick ,  Kelly J. Knudson

发明人： James Fitzpatrick ,  Kelly J. Knudson

IPC分类号： G11B5/09 ,  G11B20/14 ,  G11B20/18 ,  H03M5/14 ,  H03M7/14 ,  H03M13/00 ,  H03M13/31 ,  H03M7/00

CPC分类号： H03M13/31 ,  G11B20/1426 ,  G11B20/1833 ,  H03M13/00 ,  H03M5/145 ,  G11B2020/1434 ,  G11B2020/1446

摘要： A method for encoding a sequence of 16 bit digital data words into a sequence of 17 bit codewords in consonance with predetermined minimum zero run length (d), predetermined maximum zero run length (G) and maximum interleave zero run length (I) coding constraints of (d=0, G=6/I=7) for recording upon a magnetic medium within a magnetic recording channel is disclosed. The method includes dividing the 16 bit data word into an 8-bit A byte: a1, a2, a3, a4, a5, a6, a7, a8; and an 8-bit B byte b1, b2, b3, b4, b5, b6, b7, b8; separately testing the A and B bytes for violation of coding constraints, generating P and Q code bytes from the A and B bytes and inserting a center bit C of value one or zero between the P and Q code bytes to form the 17 bit codeword of a form p1, p2, p3, p4, p5, p6, p7, p8, C, q8, q7, q6, q5, q4, q3, q2, q1, in a manner minimizing hardware logic implementation.

摘要翻译： 一种根据预定的最小零游程长度（d），预定的最大零游程长度（G）和最大交错零游程长度（I）编码约束，将16位数字数据字序列编码成17位码字序列的方法 （d = 0，G = 6 / I = 7），用于在磁记录通道内的磁介质上进行记录。 该方法包括将16位数据字分成8位A字节：a1，a2，a3，a4，a5，a6，a7，a8; 和8位B字节b1，b2，b3，b4，b5，b6，b7，b8; 单独测试A和B字节以避免编码约束，从A和B字节生成P和Q码字节，并在P和Q码字节之间插入值为1或0的中心位C，形成17位码字 以最小化硬件逻辑实现的方式，形成p1，p2，p3，p4，p5，p6，p7，p8，c，q8，q7，q6，q5，q4，q3，q2，q1。

公开(公告)号：US5537379A

公开(公告)日：1996-07-16

申请号：US964518

申请日：1993-01-25

申请人： Noboru Kimura ,  Ronald G. Vitullo ,  Yasuhiro Yamazaki

发明人： Noboru Kimura ,  Ronald G. Vitullo ,  Yasuhiro Yamazaki

IPC分类号： G11B7/00 ,  G11B7/0045 ,  G11B7/005 ,  G11B7/007 ,  G11B7/013 ,  G11B7/125 ,  G11B11/10 ,  G11B11/105 ,  G11B19/00 ,  G11B19/02 ,  G11B19/12 ,  G11B20/10 ,  G11B20/12 ,  G11B20/14 ,  G11B20/18 ,  G11B27/30

CPC分类号： G11B27/3027 ,  G11B11/10506 ,  G11B11/10513 ,  G11B11/10515 ,  G11B11/1053 ,  G11B11/10597 ,  G11B19/00 ,  G11B19/02 ,  G11B19/12 ,  G11B20/10 ,  G11B20/10009 ,  G11B20/1258 ,  G11B20/1426 ,  G11B20/1833 ,  G11B7/0045 ,  G11B7/00456 ,  G11B7/005 ,  G11B7/007 ,  G11B7/00745 ,  G11B7/0079 ,  G11B7/013 ,  G11B7/126 ,  G11B20/1262 ,  G11B2007/0006 ,  G11B2020/1434 ,  G11B2220/2525

摘要： A first write encoder encodes digital data in a first, high-density format. A second write encoder encodes digital data in a second, low-density (i.e., ANSI) format. A first read decoder decodes digital data from the first format. A second read decoder decodes digital data from the second format. A disk drive receives a replaceable 90 millimeter optical disk. A read/write head reads encoded data from and writes encoded data to a 90 millimeter optical disk received by the drive. In a first mode, the first write encoder is connected between a source of digital data and the read/write head, and the first read decoder is connected between the read/write head and the utilizing apparatus. In a second mode, the second write encoder is connected between the source and the read/write head, and the second read decoder is connected between the read/write head and the utilizing apparatus. Control electronics switch between the first and second modes, depending upon the format in which data is recorded on the disk received by the disk drive. An 8/9 GCR encoder and a laser pulse generator are used in the first write encoder to record data on the optical media to increase the storage capacity. Improvement in timing is accomplished with write compensation and signal equalization.

公开(公告)号：US4531153A

公开(公告)日：1985-07-23

申请号：US437700

申请日：1982-10-29

申请人： Kenji Watanabe

发明人： Kenji Watanabe

IPC分类号： H03M5/04 ,  G11B20/14 ,  H03M7/00 ,  H04L25/49 ,  H04N5/926 ,  H04N7/26 ,  H04N9/804 ,  H04N9/808 ,  H04N11/04 ,  H04N5/16

CPC分类号： H04L25/4906 ,  G11B20/1426 ,  H04N5/926 ,  G11B2020/1434 ,  G11B2020/1438

摘要： A system of encoding an original binary digital video signal comprised of a plurality of first 8-bit words having an absolute value and a digital sum variation, to produce an encoded binary digital video signal, converts each first 8-bit word into a second 8-bit word also having an absolute value and a digital sum variation such that, with respect to predetermined groups of correlative first 8-bit words, that is, first 8-bit words having absolute values which are close to each other, second 8-bit words corresponding to the first 8-bit words in each respective group have the same digital sum variation; and then inverts every alternate m second 8-bit words, where m=1, 2, 3 . . . , to form the encoded binary digital video signal with substantially reduced DC content while maintaining the same recording bit rate.

摘要翻译： 对由具有绝对值和数字和变化的多个第一8位字组成的原始二进制数字视频信号进行编码以产生编码二进制数字视频信号的系统将每个第一8位字转换成第二8位字 位字也具有绝对值和数字和变化，使得对于相关的第一8位字的预定组，即具有彼此接近的绝对值的第一8位字，第二8- 对应于每个相应组中的第一8位字的位字具有相同的数字和变化; 然后反转每个交替的m个第二个8位字，其中m = 1,2,3。 的。 的。 ，以在保持相同的记录比特率的同时形成具有显着降低的DC内容的编码的二进制数字视频信号。