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Publication numberCN101971260 B
Publication typeGrant
Application numberCN 200980109111
PCT numberPCT/EP2009/051894
Publication date15 Aug 2012
Filing date18 Feb 2009
Priority date20 Mar 2008
Also published asCN101971260A, EP2277173A1, EP2277173B1, US7787204, US20090237832, WO2009115386A1
Publication number200980109111.3, CN 101971260 B, CN 101971260B, CN 200980109111, CN-B-101971260, CN101971260 B, CN101971260B, CN200980109111, CN200980109111.3, PCT/2009/51894, PCT/EP/2009/051894, PCT/EP/2009/51894, PCT/EP/9/051894, PCT/EP/9/51894, PCT/EP2009/051894, PCT/EP2009/51894, PCT/EP2009051894, PCT/EP200951894, PCT/EP9/051894, PCT/EP9/51894, PCT/EP9051894, PCT/EP951894
InventorsE埃莱夫特里乌, G凯鲁比尼, RA哈钦斯, RD希德希亚恩
Applicant国际商业机器公司
Export CitationBiBTeX, EndNote, RefMan
External Links: SIPO, Espacenet
Error correction coding of longitudinal position information
CN 101971260 B
Abstract
A sequential data storage medium, comprising a sequence of plurality of servo patterns that provide lateral position information and longitudinal position information, wherein each of the plurality of servo patterns comprises a first burst comprising a first plurality of pulses, a second burst comprising a second plurality of pulses, a third burst comprising a third plurality of pulses, and a fourth burst comprising a fourth plurality of pulses. The spacings between the first plurality of pulses, in combination with the spacings between the second plurality of pulses, encode a first bit without affecting the recovery of lateral position information. The spacings between the third plurality of pulses, in combination with the spacings between the fourth plurality of pulses, encode a second bit without affecting the recovery of lateral position information. The sequence of plurality of servo patterns comprises a sequence of the first bits and a sequence of the second bits to form an error-correction codeword providing error-correction capability.
Claims(17)  translated from Chinese
1. 一种对顺序数据存储介质中的线性位置信息进行编码的方法,所述方法包括以下步骤: 沿所述顺序数据存储介质的一部分编码N个顺序伺服模式,其中N大于I ; 其中N个伺服模式中的每个伺服模式对第一纵向位置信息位和第二纵向位置信息位进行编码,并且其中所述N个伺服模式共同对总计2N个纵向位置信息位进行编码; 其中所述N个纵向位置信息伺服模式中的每个伺服模式的编码步骤包括以下步骤: 包含第一多个脉冲的第一突发; 包含第二多个脉冲的第二突发; 包含第三多个脉冲的第三突发; 包含第四多个脉冲的第四突发; 其中形成所述第一突发的所述第一多个脉冲之间的间距连同形成所述第二突发的所述第二多个脉冲之间的间距一起对所述第一纵向位置信息位进行编码;以及其中形成所述第三突发的所述第三多个脉冲之间的间距连同形成所述第四突发的所述第四多个脉冲之间的间距一起对所述第二纵向位置信息位进行编码。 A method of sequential data storage medium encoding linear position information, said method comprising the steps of: a portion of said sequential data storage medium along the servo pattern sequence encoding the N, where N is greater than I; wherein the N servo pattern in each servo pattern information on the first longitudinal position and a second longitudinal position bits to encode the information bits, and wherein said servo pattern common for the N total 2N longitudinal position information encoded bits; wherein the N longitudinal position information encoded in the servo pattern for each servo pattern step comprises the steps of: a first plurality of pulses comprising a first burst; a second plurality of pulses comprising a second burst; third section comprising a plurality of pulses Three burst; comprising a fourth plurality of fourth pulse burst; wherein said first pitch is formed in the first plurality of burst pulses between said second burst is formed together with the second multi- together with the spacing between the pulses of the first longitudinal position information encoded bits; and a spacing is formed together with the fourth burst of the third plurality of pulses forming the third burst between said wherein the spacing between the pulses of said fourth plurality of longitudinal position along said second information bits are encoded.
2.如权利要求I中所述的方法,其中所述顺序数据存储介质包括磁带。 2. A method as recited in claim I, wherein said sequential data storage medium comprises a magnetic tape.
3.如权利要求2中所述的方法,其中对于所述N个伺服模式中的每个伺服模式,所述第一纵向位置信息位包括信息位而所述第二纵向位置信息位包括奇偶校验位。 3. The method according to claim 2, wherein said N servo pattern for each servo pattern, the first longitudinal position information comprises information bits and said second bits longitudinal position information comprises parity bits check digit.
4.如权利要求3中所述的方法,其中对于所述N个伺服模式中的每个伺服模式,所述奇偶校验位与所述信息位包括相同的值。 4. The method according to claim 3, wherein the N servo pattern for each servo pattern, the parity bits and the information bits comprise the same value.
5.如权利要求4中所述的方法,还包括以下步骤: 对于i的每个值,检测第i个伺服模式,其中i大于或等于I并且小于或等于N ; 确定是否可以对第i个第一纵向位置信息位进行解码; 当无法对所述第i个第一纵向位置信息位进行解码时,使用针对第i个第二纵向位置信息位解码的值作为所述第i个第一纵向位置信息位的值。 5. A method as recited in claim 4, further comprising the steps of: for each value of i, the i-th servo pattern is detected, wherein i is greater than or equal to I and less than or equal to N; to determine whether the i-th a first longitudinal position information bit decoding; when unable to the i-th first longitudinal position to decode information bits, using a second longitudinal position of the i-th information bits as the decoded value for the i-th first longitudinal value of the position information bits.
6.如权利要求3中所述的方法,还包括以下步骤:使用里德-所罗门纠错码纠正任一系列的8个连续纵向位置信息位。 6. The method according to claim 3, further comprising the step of: using a Reed - Solomon error correction code to correct any of a series of eight consecutive bits longitudinal position information.
7.如权利要求3中所述的方法,其中N等于24,所述方法还包括以下步骤: 对8个3位代码字符号进行解码; 使用里德-所罗门纠错码纠正最多2个不同的3位代码字符号。 7. A method as recited in claim 3, wherein N is equal to 24, the method further comprising the steps of: 8 3 codeword decoding symbols; Reed - Solomon error correction code to correct up to two different 3 codeword symbols.
8.如权利要求3中所述的方法,还包括以下步骤: 对包括8个3位代码字符号的第一纵向位置信息字进行解码; 对包括8个3位代码字符号的第二纵向位置信息字进行解码; 其中所述第一纵向位置信息字与所述第二纵向位置信息字交织。 8. A method as claimed in claim 3, further comprising the step of: including eight three codeword symbol first longitudinal position information word decoding; including eight three codeword symbols second longitudinal position decoding the information word; wherein said first longitudinal position and the second information word information word interleaving longitudinal position.
9.如权利要求8中所述的方法,还包括以下步骤:纠正形成所述第一纵向位置信息字的所述8个3位代码字符号中的最多2个3位代码字符号。 9. A method as claimed in claim 8, further comprising the steps of: forming the first correcting the longitudinal position of the information word 8 3 codeword symbols up to two three codeword symbols.
10.如权利要求8中所述的方法,还包括以下步骤:纠正形成所述第二纵向位置信息字的所述8个3位代码字符号中的最多2个3位代码字符号。 10. A method as claimed in claim 8, further comprising the steps of: forming a correct longitudinal position of said second information word of eight three codeword symbols up to two three codeword symbols.
11. 一种在顺序数据存储介质中编码同步信息、制造商信息和纵向位置信息的方法,所述方法包括以下步骤:沿顺序数据存储介质的长度的一部分编码N个顺序伺服模式,其中N大于I ; 其中N个伺服模式中的每个伺服模式对第一位和第二位进行编码,并且其中所述N个伺服模式共同对总计2N个位进行编码; 其中所述N个伺服模式中的每个伺服模式的编码步骤包括以下步骤: 包含第一多个脉冲的第一突发; 包含第二多个脉冲的第二突发; 包含第三多个脉冲的第三突发; 包含第四多个脉冲的第四突发; 其中形成所述第一突发的所述第一多个脉冲之间的间距连同形成所述第二突发的所述第二多个脉冲之间的间距一起对第一位进行编码;以及其中形成所述第三突发的所述第三多个脉冲之间的间距连同形成所述第四突发的所述第四多个脉冲之间的间距一起对第二位进行编码。 11. A method of sequential data storage medium encoded synchronization information, manufacturer information, and the longitudinal position information, said method comprising the steps of: a sequential data storage medium along the length of the part of the coding sequence of the N servo pattern, wherein N is greater than I; wherein the N servo pattern in each servo pattern on the first and second bits are encoded, and wherein said servo pattern of N bits together for a total of 2N encoding; wherein said servo pattern of the N Each servo pattern encoding step comprises the steps of: a first burst comprising a first plurality of pulses; and a second plurality of pulses comprising a second burst; third plurality of pulses comprising a third burst; comprising a fourth a fourth plurality of pulse bursts; wherein said first burst formation pitch of the first plurality of pulses together forming a spacing between the pulses of said second plurality of said second burst together between first bit is encoded; and wherein forming the third pitch of the third plurality of pulse bursts together with the spacing between a plurality of fourth pulse forming the fourth burst between the pair together second encoding.
12.如权利要求11中所述的方法,其中所述顺序数据存储介质包括磁带。 12. The method as claimed in claim 11, wherein said sequential data storage medium comprises a magnetic tape.
13.如权利要求12中所述的方法,其中N为36,其中所述编码步骤还包括以下步骤: 使用8个顺序伺服模式对同步信息进行编码,其中每个伺服模式编码2位同步信息。 13. The method as claimed in claim 12, wherein N is 36, wherein said encoding step further comprises the step of: using the eight sequential servo patterns of the synchronization information is encoded, wherein each servo pattern encodes two synchronization information.
14.如权利要求13中所述的方法,其中所述同步信息包括16位模式1100000000000000。 14. The method according to claim 13, wherein said synchronization information includes 16-bit mode 1100000000000000.
15.如权利要求13中所述的方法,还包括以下步骤:使用4个顺序伺服模式对制造商信息进行编码,其中每个伺服模式编码I位制造商信息和I个奇偶校验位。 15. The method as claimed in claim 13, further comprising the step of: using four sequential servo patterns to encode information on the manufacturer, each servo pattern coding I bit manufacturer information and I parity bits.
16.如权利要求15中所述的方法,其中使用简单重复码对所述制造商信息进行编码。 16. The method as claimed in claim 15, wherein the simple repetition code of manufacturer information is encoded.
17.如权利要求15中所述的方法,其中使用一位纠错汉明码对所述制造商信息进行编码。 17. The method as claimed in claim 15, wherein the use of a Hamming code error correction on the manufacturer information is encoded.
Description  translated from Chinese

纵向位置信息的纠错编码 Longitudinal position of the error correction coding information

技术领域 Technical Field

[0001] 申请人的发明涉及纵向位置信息的纠错编码。 [0001] Applicants' invention relates to a longitudinal position error correction encoded information.

背景技术 Background

[0002] 基于定时的伺服(TBS)是针对线性磁带驱动器开发的一种技术。 [0002] The timing-based servo (TBS) is a technology for the development of linear tape drives. 在TBS系统中,记录的伺服模式(pattern)包括具有两个不同方位倾斜的转变。 In TBS systems, the recording of servo pattern (pattern) includes a tilt shift two different orientations. 从读取伺服模式的窄磁头生成的脉冲或双位(dibit)的相对定时得出磁头位置。 Pulse or double digit (dibit) relative timing is generated from a narrow head reads the servo pattern obtained head position. TBS模式还允许在不影响横向位置误差信号(PES)的生成的情况下对其他纵向位置(LPOS)信息进行编码。 Under TBS mode also allows without affecting the lateral position error signal (PES) generated by the case for the other longitudinal position (LPOS) information is encoded. 这通过使用脉冲位置调制(PPM)从其名义模式位置使转变移位来实现。 This is achieved by using pulse position modulation (PPM) so that the shift change mode to achieve its nominal position. 线性磁带开放(LTO)格式提供了当前中型磁带驱动器的伺服格式规范。 Linear Tape-Open (LTO) format provides current servo format specification medium tape drives. 欧洲计算机制造商协会(ECMA)在2001年将第I代LTO驱动器(LT0-1)的完整格式标准化为ECMA-319。 European Computer Manufacturers Association (ECMA) in 2001 I will be the first generation of standardized LTO drive (LT0-1) complete format of ECMA-319. 有关LTO技术,尤其是有关其中未修改伺服格式的第2至4代LTO驱动器(LT0-2至LT0-4)的其他信息可以在万维网(www)上的ultrium.com处找到。 Related LTO technology, particularly in relation to the unmodified servo format in which the first 2-4 generation LTO drive (LT0-2 to LT0-4) Additional information can be found at ultrium.com at (www) on the World Wide Web. LPOS位的检测还可以由匹配滤波器检测器执行,如序号为11/205,713并由其共同受让人拥有的申请中所述。 LPOS bit detection may also be performed by a matched filter detector, such as Serial No. 11 / 205,713 owned by the common assignee of the application.

[0003] 传统上,LPOS信息位的检测基于在伺服读取器输出处观察伺服突发内双位峰值的到达时间的移位。 [0003] Conventionally, the detection of LPOS information is based on the servo bits at the output of the reader was observed within the servo dibit peak burst arrival time shift. 本领域中公知的是,通过脉冲位置调制在顺序数据存储介质(例如磁带)的非数据区域中对包括36位信息的LPOS字进行编码。 Well known in the art, by pulse position modulation in a sequential data storage medium (e.g., magnetic tape) on a non-data area 36 includes information encoded LPOS word. 在标准ECMA-319中,与12. 7mm的384轨道磁带盒上的数据交换有关的每个编码后的LPOS字与特定绝对纵向地址相关,并且沿磁带每隔7. 2_出现。 LPOS word associated with a particular standard ECMA-319, the data associated with each encoding of 12. 7mm track 384 on the cassette exchanged absolute longitudinal address associated, and along the tape 7. 2_ occur every. 使用现有技术方法,LPOS字包括36个单独的伺服模式(8卩,帧),其中每个帧编码I位信息。 Using the prior art methods, LPOS word comprises 36 separate servo pattern (8 Jie, frames), wherein each I frame coded bit information. 两个连续LPOS字的LPOS值相差I。 LPOS values of two consecutive LPOS words differ I. 因此,磁带驱动器可以将数据/伺服磁头组件定位在指定的LPOS地址处,由此获得大约7. 2mm的纵向分辨率。 Accordingly, the tape drive can be data / servo head assembly is positioned at the specified address LPOS, thereby obtaining a vertical resolution of about 7. 2mm.

[0004] 包括两个伺服磁头的读/写组件跨越一个数据带以及布置在此数据带附近的两个伺服带。 [0004] consists of two servo head read / write components across a data tape and arranged in the vicinity of this data with two servo band. 如果一个伺服磁头变得无法运行,则仅可使用一个伺服磁头来横向定位读/写磁头。 If a servo head becomes unable to run, you can only use a servo head for lateral positioning of the read / write head. 运行的伺服通道中的位错误可以导致停止写入状况。 Run the servo channel bit error can lead to stop writing condition. 或者,伺服带可能被损坏或可能因介质损坏而不包括有用信息。 Alternatively, the servo band may be damaged or may be due to media damage without including useful information.

发明内容 DISCLOSURE

[0005] 申请人的发明包括包含其中编码一系列多个伺服模式的顺序数据存储介质,所述顺序数据存储介质例如但不限于磁带,所述伺服模式提供横向位置信息和LPOS信息。 Sequential data storage medium [0005] Applicant's invention includes a plurality of series of encoded servo pattern in which, said sequential data storage medium, such as but not limited to the tape, the servo pattern and provides lateral position information LPOS information. 每个伺服模式包括:包含多个脉冲的第一突发、包含多个脉冲的第二突发、包含多个脉冲的第三突发,以及包含多个脉冲的第四突发。 Each servo pattern comprises: a first burst comprising a plurality of pulses, comprising a plurality of pulses a second burst, a third burst comprising a plurality of pulses, and a fourth plurality of pulses comprising a burst. 形成所述第一突发的多个脉冲的间距连同形成所述第二突发的多个脉冲的间距一起对第一位进行编码而不影响横向位置信息的恢复。 Forming the first pitch of the plurality of burst pulses together forming a plurality of pulses of the second burst intervals along the first encoding without affecting a recovery of lateral position information. 形成所述第三突发的多个脉冲的间距连同形成所述第四突发的多个脉冲的间距一起对第二位进行编码而不影响横向位置信息的恢复。 Forming a plurality of said third burst pulse spacing is formed together with the fourth burst of pulses spaced along a plurality of second encoding without affecting the recovery of lateral position information. 所述一系列多个伺服模式然后包括形成提供纠错能力的纠错代码字的一系列位。 And said plurality of servo patterns comprises forming a series of providing error correcting capability of the error correction code word in a series of bits.

[0006] 申请人的发明还包括一种在申请人的顺序数据存储介质的非数据区域中编码信息的方法。 [0006] Applicants' invention further comprises a coding in the applicant's non-sequential data storage medium in the data area information. 在特定实施例中,与包括用于恢复LPOS信息的纠错能力的现有技术方法相比,申请人的方法提供了更高的LPOS信息检测可靠性和更低的解码延迟。 In a particular embodiment, includes an error correction capability compared with information for recovering LPOS prior art method, the applicant's method provides higher reliability and lower LPOS information detection decoding delay.

[0007] 在申请人的方法的特定实施例中,所述第一位包括LPOS信息位,而所述第二位包括“奇偶校验位”。 [0007] In a particular applicant and the second method including the "parity bit" embodiment, the first information comprises LPOS bits. 在这些奇偶校验位实施例中的特定实施例中,申请人的方法使用里德所罗门纠错码来纠正解码后的LPOS信息中的错误。 In these particular embodiments parity embodiment, the applicant's method uses Reed-Solomon error correction code to correct LPOS information is decoded in error. 在申请人的方法的其他实施例中,使用汉明纠错码来纠正解码后的LPOS信息中的错误。 In other embodiments of the applicant's method of using Hamming error correction code to correct LPOS information is decoded in error. 在申请人的方法的进一步实施例中,使用重复码,其中所述第一位的值与所述第二位的值相同。 In a further embodiment of the method of the applicant, the use of repetition code, wherein the first and second bit values of the bits of the same value.

附图说明[0008] 通过结合附图阅读以下详细描述,将更好地理解本发明,在所述附图中,相同的标号用于指定相同的元素,这些附图是: BRIEF DESCRIPTION OF DRAWINGS [0008] The accompanying drawings in conjunction with the following detailed description, the present invention will be better understood in the drawings, the same reference numerals are used for the same element specifies that these drawings are:

[0009] 图IA示出了包括四个突发的伺服模式,其中这四个突发中的每个突发都包括多个脉冲; [0009] Figure IA illustrates a servo pattern comprising four bursts, wherein a burst of each of these four burst comprises a plurality of pulses;

[0010] 图IB示出了如针对LTO磁带驱动器规定的与包括图IA的伺服模式的突发和脉冲的大小有关的数据; [0010] Figure IB shows data related to the size of the servo pattern comprising Figures IA bursts and pulses such as for LTO tape drives require;

[0011] 图IC示出了横向y位置估计的计算; [0011] FIG. IC shows the calculation of the estimated lateral position y;

[0012] 图2示出了用于对一位信息进行编码的第一现有技术伺服模式; [0012] Figure 2 illustrates a first prior art servo pattern used to encode a message;

[0013] 图3示出了用于对一位信息进行编码的第二现有技术伺服模式; [0013] FIG. 3 shows a second prior art servo pattern used to encode a message;

[0014] 图4示出了用于对两位信息进行编码的申请人的伺服模式的第一实施例; [0014] FIG. 4 shows a first embodiment for encoding two bits of information of the servo pattern of the applicant;

[0015] 图5示出了用于对两位信息进行编码的申请人的伺服模式的第二实施例; [0015] FIG. 5 shows a second embodiment for two bits of information encoded in the servo pattern of the applicant;

[0016] 图6示出了用于对两位信息进行编码的申请人的伺服模式的第三实施例; [0016] FIG. 6 shows a third embodiment for encoding two bits of information of the servo pattern of the applicant;

[0017] 图7示出了用于对两位信息进行编码的申请人的伺服模式的第四实施例; [0017] FIG. 7 shows a fourth embodiment for encoding two bits of information of the servo pattern of the applicant;

[0018] 图8A示出了用于对LPOS字进行编码的24个顺序伺服模式; [0018] Figure 8A shows a 24 sequential servo patterns used to encode LPOS word;

[0019] 图8B示出了图8A的包括八个3位符号的LPOS字; [0019] FIG. 8B illustrates Fig. 8A includes eight three symbols LPOS word;

[0020] 图9示出了图8A的包括包含4个3位符号的第一LPOS字的LPOS信息的第一部分; A first portion [0020] FIG. 9 shows FIG. 8A includes three symbol comprising four first LPOS word LPOS information;

[0021] 图10示出了图8A的包括包含4个3位符号的第二LPOS字的LPOS信息的第二部分,其中图9的第一LPOS字与图10的第二LPOS字交织; [0021] FIG. 10 illustrates Fig 8A includes LPOS information comprising four three second LPOS word symbols of a second portion, wherein a first LPOS word FIG. 9 and FIG. 10 of the second LPOS word interleaving;

[0022] 图11示出了从伽罗瓦域GF(S)上的[8,4,5]单独扩展里德-所罗门码生成代码字的系统编码器;以及 [0022] FIG. 11 illustrates a scale from [8,4,5] Galois field GF (S) on a separate Reed - Solomon code to generate code word encoder system; and

[0023] 图12示出了从伽罗瓦域GF(2)上的[8,4,4]扩展汉明码生成代码字的系统编码器。 [0023] FIG. 12 illustrates the Galois field GF (2) on the [8,4,4] extended Hamming codeword generation system encoder.

具体实施方式 DETAILED DESCRIPTION

[0024] 参考附图在以下描述中的优选实施例中描述了本发明,其中相同的编号表示相同或相似的元素。 [0024] In the following description with reference to the accompanying drawings of the preferred embodiment of the present invention is described, wherein the same reference numerals denote the same or similar elements. 在整个说明书中,对“一个实施例”、“某一实施例”的引用或类似语言指结合所述实施例描述的特定特性、结构或特征包括在本发明的至少一个实施例中。 Reference or similar language means that a particular characteristic of the embodiment described, structure, or characteristic included in at least one embodiment of the present invention throughout this specification to "one embodiment", "an embodiment" of. 因此,在整个说明书中出现的词组“在一个实施例中”、“在某个实施例中”和类似语言可以但不一定全部指同一实施例。 Therefore, appearing throughout the specification the phrase "in one embodiment", "in one embodiment" and similar language, but may not necessarily all referring to the same embodiment. [0025] 本发明的所述特性、结构或特征可以以任何适合的方式组合在一个或多个实施例中。 [0025] The features, structures, or characteristics of the present invention may be combined in any suitable manner in one or more embodiments. 在以下描述中,叙述了许多特定细节以彻底理解本发明的实施例。 In the following description, numerous specific details are described to provide a thorough understanding of embodiments of the present invention. 但是,相关领域的技术人员将意识到,可以在没有一个或多个特定细节的情况下或通过其他方法、组件、材料等实现本发明。 However, in the relevant art will recognize that in the absence of one or more of the specific details or the present invention is realized by means of other methods, components, materials, and the like. 在其他实例中,没有详细示出或描述公知的结构、材料或操作以避免未重点突出本发明的各方面 In other instances, not shown in detail or descriptions of well-known structures, materials, or operations are not focused in order to avoid various aspects of the present invention,

[0026] 在顺序数据存储介质(例如,磁带存储介质)中,在所述介质的非数据部分中编码伺服模式。 [0026] In the sequential data storage medium (e.g., magnetic storage medium), the data in the non-coding part of the medium servo pattern. 这些伺服模式用于相对于多个数据轨道定位读/写磁头以提供同步数据、提供制造商数据,以及沿所述介质的长度确定线性位置(“LP0S”)。 The servo pattern with respect to a plurality of data tracks for positioning the read / write head to provide synchronization data, manufacturers provide data, and determining the length of the medium along the linear position ("LP0S").

[0027] 现在参考图IA和1B,记录的伺服模式100包括具有两个不同方位倾斜的转变。 [0027] Referring now to Figures IA and 1B, a recording of servo pattern 100 includes two different orientations inclined transition. 从读取所述模式的窄磁头生成的脉冲的相对定时得出读/写磁头位置。 The relative timing of pulses generated by a narrow head reading the pattern from the obtained read / write head position. 伺服模式100还允许在不影响横向位置误差信号(“PES”)的生成的情况下对LPOS信息进行编码。 100 Servo mode also allows lateral position error signal does not affect ("PES") generated by the case of LPOS information is encoded. 图IB示出了LTO磁带驱动器中的伺服模式的格式。 Figure IB illustrates the format of LTO tape drive servo pattern.

[0028] 图IC示出了从LTO磁带驱动器中A间隔总和与B间隔总和的比计算横向y位置估计。 [0028] FIG. IC shows the sum of the estimated lateral position y A and B spaced intervals than the calculated sum from LTO tape drive. 然后从所述y位置估计获得位置误差信号。 Then estimate the y position obtained from the position error signal.

[0029] 通过从图IA中所示的名义模式位置移位转变对LPOS信息进行编码。 [0029] The nominal mode from the position shown in Fig. IA shift change of LPOS information is encoded. 在磁带系统中,通常提供两个可从其中得出LPOS信息以及PES的专用伺服通道。 In tape systems, which typically provide two derived from the LPOS information as well as PES dedicated servo channels.

[0030] 伺服模式100包括包含五个脉冲的第一突发110,其中这五个脉冲中的每个脉冲都包括第一方位倾斜。 [0030] The servo pattern 100 includes five pulses comprising a first burst 110, in which five pulses each pulse comprising a first inclined orientation. 第一脉冲101包括边缘102,其中边缘102面向第二脉冲103。 The first pulse 101 includes an edge 102, wherein edge 102 facing the second pulse 103. 第二脉冲103包括面向第一脉冲101的边缘104。 The second pulse 103 includes an edge facing the first pulse 101 104. 在图IA的例示实施例中,边缘102与边缘104相距距离106。 The embodiment illustrated in FIG. IA embodiment, the edge 102 and the edge 104 a distance 106.

[0031] 距离106包括伺服模式100中相邻脉冲之间的名义间距。 [0031] The distance 106 includes a servo pattern 100 in nominal spacing between adjacent pulses. 进一步在图IA的例示实施例中,突发110中的五个脉冲中的每个脉冲与相邻脉冲间隔此相同的名义间距106。 Figure IA further illustrative embodiment, five pulses in burst 110 of each pulse and the pulse interval of adjacent nominal spacing 106. This same.

[0032] 伺服模式100还包括包含五个脉冲的第二突发120,其中这五个脉冲中的每个脉冲都包括第二方位倾斜,并且其中突发120中的五个脉冲中的每个脉冲都与相邻脉冲间隔名义间距106。 [0032] 100 further includes a servo pattern comprising five pulses of the second burst 120, in which five pulses each pulse comprising a second inclined orientation, and wherein the five pulses in burst 120 of each pulse are adjacent nominal pulse interval spacing 106. 伺服模式100还包括包含四个脉冲的第三突发130,其中这四个脉冲中的每个脉冲都包括第一方位倾斜,并且其中突发130中的四个脉冲中的每个脉冲都与相邻脉冲间隔名义间距106。 100 further comprises a servo pattern comprising four pulses of the third burst 130, in which four pulses each pulse comprising a first inclined orientation, and wherein a burst of four 130 pulses with each pulse nominal spacing 106 adjacent pulse intervals. 伺服模式100还包括包含四个脉冲的第四突发140,其中这四个脉冲中的每个脉冲都包括第二方位倾斜,并且其中突发140中的四个脉冲中的每个脉冲都与相邻脉冲间隔名义间距106。 Servo pattern 100 further includes a fourth burst comprising four pulses 140, wherein the four pulses in each pulse comprises a second inclined orientation, and wherein the four bursts of 140 pulses with each pulse nominal spacing 106 adjacent pulse intervals.

[0033] 由于布置在伺服模式100中的所有脉冲都与相邻脉冲间隔名义间距106,因此伺服模式100未编码任何LPOS信息。 [0033] Since all the pulses are arranged in the servo pattern 100 are adjacent pulse interval nominal spacing 106, so 100 is not any LPOS servo pattern information is encoded. 包括用于恢复LPOS信息的纠错能力的现有技术方法调整突发110和突发120中的脉冲之间的间距以编码LPOS数据。 Including the error correction capability for recovering LPOS information prior art method of adjusting burst and burst spacing 110 between the pulses 120 to encode LPOS data. 使用这些现有技术伺服模式和方法,突发130和140中的相邻脉冲之间的间距保持名义间距106。 Using these prior art servo patterns and methods, burst spacing 130 and 140 between adjacent pulses 106 to maintain nominal spacing. 结果,现有技术伺服模式和方法未在突发130和140中编码用于纠错目的的数据。 As a result, the prior art method is not in the servo pattern and burst 130 and 140 for data error correction coding purposes.

[0034] 图2示出了现有技术伺服模式200。 [0034] Figure 2 illustrates a prior art servo pattern 200. 相对于名义间距106 (图1A),已改变突发210和220中的脉冲之间的间距。 With respect to the nominal spacing 106 (FIG. 1A), it has changed the burst pitch 210 and 220 between pulses. 使用现有技术方法,伺服模式200编码一位信息,其中该位被解码以包括值“I”。 Using the prior art methods, servo pattern 200 encodes a message, which includes the bits are decoded to the value "I".

[0035] 突发210中的脉冲2与突发210中的脉冲I相隔间距202,其中间距202小于名义间距106。 [0035] 210 pulse burst and 2 in burst 210 by spacing 202 pulse I, wherein spacing 202 is less than nominal spacing 106. 此外,突发210中的脉冲2与突发210中的脉冲3相隔间距204,其中间距204大于名义间距106。 In addition, pulse 2 in burst 210 and 210 from pulse 3 in burst spacing 204, wherein spacing 204 is greater than nominal spacing 106. 突发210中的脉冲4与突发210中的脉冲3相隔间距204,其中间距204大于名义间距106。 4 210 pulse burst and pulse 3 in burst 210 by spacing 204, wherein spacing 204 is greater than nominal spacing 106. 此外,突发210中的脉冲4与突发210中的脉冲5相隔间距202,其中间距202小于名义间距106。 In addition, pulse burst 210 4 5 pulse burst 210 by spacing 202, wherein spacing 202 is less than nominal spacing 106. [0036] 在图2的例示实施例中,相对于名义间距106(图1A),已经以与突发210中类似的方式改变突发220中的脉冲之间的间距。 [0036] In the illustrated embodiment of FIG. 2 embodiment, with respect to the nominal spacing 106 (Figure 1A), with the burst 210 has a similar manner to change the spacing between bursts of 220 pulses. 突发220中的脉冲2与突发220中的脉冲I相隔间距202,其中间距202小于名义间距106。 2 220 pulse burst and pulse burst 220 by spacing 202 I, wherein spacing 202 is less than nominal spacing 106. 此外,突发220中的脉冲2与突发220中的脉冲3相隔间距204,其中间距204大于名义间距106。 In addition, pulse 2 in burst 220 and 220 from pulse 3 in burst spacing 204, wherein spacing 204 is greater than nominal spacing 106. 突发220中的脉冲4与突发220中的脉冲3相隔间距204,其中间距204大于名义间距106。 4 220 pulse burst and pulse 3 in burst 220 by spacing 204, wherein spacing 204 is greater than nominal spacing 106. 此外,突发220中的脉冲4与突发220中的脉冲5相隔间距202,其中间距202小于名义间距106。 In addition, the pulse burst 220 4 5 pulse burst 220 by spacing 202, wherein spacing 202 is less than nominal spacing 106.

[0037] 图3示出了现有技术伺服模式300。 [0037] FIG. 3 shows a prior art servo pattern 300. 相对于名义间距106 (图1A),已改变突发310和320中的脉冲之间的间距。 With respect to the nominal spacing 106 (FIG. 1A), it has changed the burst pitch 310 and 320 between pulses. 使用现有技术方法,伺服模式300编码一位信息,其中该位被解码以包括值“O”。 Using the prior art methods, servo pattern 300 encodes a message, which includes the bits are decoded to the value "O".

[0038] 突发310中的脉冲2与突发310中的脉冲I相隔间距204,其中间距204大于名义间距106。 [0038] 310 pulse burst and 2 in burst 310 by spacing 204 pulse I, wherein spacing 204 is greater than nominal spacing 106. 此外,突发310中的脉冲2与突发310中的脉冲3相隔间距202,其中间距202小于名义间距106。 In addition, pulse 2 in burst 310 and 310 from pulse 3 in burst spacing 202, wherein spacing 202 is less than nominal spacing 106. 突发310中的脉冲4与突发310中的脉冲3相隔间距202,其中间距202小于名义间距106。 4 310 pulse burst and pulse 3 in burst 310 by spacing 202, wherein spacing 202 is less than nominal spacing 106. 此外,突发310中的脉冲4与突发310中的脉冲5相隔间距204,其中间距204大于名义间距106。 In addition, the pulse burst 310 4 5 pulse burst 310 by spacing 204, wherein spacing 204 is greater than nominal spacing 106.

[0039] 在图3的例示实施例中,相对于名义间距106(图1A),已经以与突发310中类似的方式改变突发320中的脉冲之间的间距。 [0039] In the illustrated embodiment of FIG. 3 embodiment, with respect to the nominal spacing 106 (Figure 1A), with the burst 310 has a similar manner to change the spacing between bursts of 320 pulses. 突发320中的脉冲2与突发320中的脉冲I相隔间距204,其中间距204大于名义间距106。 2 320 pulse burst and pulse burst 320 by spacing 204 I, wherein spacing 204 is greater than nominal spacing 106. 此外,突发320中的脉冲2与突发320中的脉冲3相隔间距202,其中间距202小于名义间距106。 In addition, pulse 2 in burst 320 and 320 from pulse 3 in burst spacing 202, wherein spacing 202 is less than nominal spacing 106. 突发320中的脉冲4与突发320中的脉冲3相隔间距202,其中间距202小于名义间距106。 4 320 pulse burst and pulse 3 in burst 320 by spacing 202, wherein spacing 202 is less than nominal spacing 106. 此外,突发320中的脉冲4与突发320中的脉冲5相隔间距204,其中间距204大于名义间距106。 In addition, the pulse burst 320 4 5 pulse burst 320 by spacing 204, wherein spacing 204 is greater than nominal spacing 106.

[0040] 图4示出了申请人的伺服模式400。 [0040] Figure 4 illustrates a servo pattern 400 of the applicant. 相对于名义间距106 (图1A),已改变突发410和420中的脉冲之间的间距以编码第一位信息。 With respect to the nominal spacing 106 (FIG. 1A), it has been changed in the burst 410 and the spacing between the pulses 420 to encode the first information. 此外,相对于名义间距106(图1A),已改变突发430和440中的脉冲之间的间距以编码用于纠错目的的奇偶校验位。 In addition, with respect to the nominal spacing 106 (FIG. 1A), it has been changed in the burst 430 and the spacing between the pulses 440 to encode the parity bits for error correction purposes. 使用申请人的方法,伺服模式400因此编码两个位,第一位表示一位信息,第二位表示用于纠错目的的奇偶校验位。 Applicants using methods, servo pattern 400 thus encodes two bits, the first bit represents a message for the second bit indicates a parity bit error correction purposes. 在特定实施例中,这两个位表示二进制符号对(1,I),其中信息位和奇偶校验位都采用逻辑值“I”。 In a particular embodiment, these two bits represent binary symbols (1, I), wherein the information bits and parity bits using a logical value "I". 要指出的是,奇偶校验位的引入不会影响I位置估计的计算,因为A间隔总和以及B间隔总和产生与名义间距(图1C)的情况相同的值。 It is noted that the introduction of the parity bit does not affect the position estimate I calculated as the sum of the A intervals and B intervals to produce the sum and the nominal spacing (FIG. 1C) in the case of the same value.

[0041] 突发410中的脉冲2与突发410中的脉冲I相隔间距202,其中间距202小于名义间距106。 [0041] 410 pulse burst and 2 in burst 410 by spacing 202 pulse I, wherein spacing 202 is less than nominal spacing 106. 此外,突发410中的脉冲2与突发410中的脉冲3相隔间距204,其中间距204大于名义间距106。 In addition, pulse 2 in burst 410 and 410 from pulse 3 in burst spacing 204, wherein spacing 204 is greater than nominal spacing 106. 突发410中的脉冲4与突发410中的脉冲3相隔间距204,其中间距204大于名义间距106。 4 410 pulse burst and burst 410 by spacing 204 pulse 3, wherein spacing 204 is greater than nominal spacing 106. 此外,突发410中的脉冲4与突发410中的脉冲5相隔间距202,其中间距202小于名义间距106。 In addition, the burst 410 of pulses 4 and 5 pulses in burst 410 by spacing 202, wherein spacing 202 is less than nominal spacing 106.

[0042] 在图4的例示实施例中,相对于名义间距106(图1A),已经以与突发410中类似的方式改变突发420中的脉冲之间的间距。 [0042] In the illustrated embodiment of FIG. 4 embodiment, with respect to the nominal spacing 106 (Figure 1A), with the burst 410 has a similar manner to change the spacing between bursts of 420 pulses. 突发420中的脉冲2与突发420中的脉冲I相隔间距202,其中间距202小于名义间距106。 2 420 pulse burst and pulse burst 420 by spacing 202 I, wherein spacing 202 is less than nominal spacing 106. 此外,突发420中的脉冲2与突发420中的脉冲3相隔间距204,其中间距204大于名义间距106。 In addition, pulse 2 in burst 420 and 420 from pulse 3 in burst spacing 204, wherein spacing 204 is greater than nominal spacing 106. 突发420中的脉冲4与突发420中的脉冲3相隔间距204,其中间距204大于名义间距106。 4 420 pulse burst and burst 420 by spacing 204 pulse 3, wherein spacing 204 is greater than nominal spacing 106. 此外,突发420中的脉冲4与突发420中的脉冲5相隔间距202,其中间距202小于名义间距106。 In addition, the burst 420 of pulses 4 and 5 pulses in burst 420 by spacing 202, wherein spacing 202 is less than nominal spacing 106.

[0043] 突发430中的脉冲2与突发430中的脉冲I相隔间距202,其中间距202小于名义间距106。 [0043] 430 pulse burst and 2 in burst 430 by spacing 202 pulse I, wherein spacing 202 is less than nominal spacing 106. 此外,突发430中的脉冲2与突发430中的脉冲3相隔间距204,其中间距204大于名义间距106。 In addition, pulse 2 in burst 430 and 430 from pulse 3 in burst spacing 204, wherein spacing 204 is greater than nominal spacing 106. 突发430中的脉冲4与突发430中的脉冲3相隔间距204,其中间距204大于名义间距106。 4 430 pulse burst and burst 430 by spacing 204 pulse 3, wherein spacing 204 is greater than nominal spacing 106.

[0044] 在图4的例示实施例中,相对于名义间距106(图1A),已经以与突发430中类似的方式改变突发440中的脉冲之间的间距。 [0044] In the illustrated embodiment of FIG. 4 embodiment, with respect to the nominal spacing 106 (Figure 1A), with the burst 430 has a similar manner to change the spacing between bursts of 440 pulses. 突发440中的脉冲2与突发440中的脉冲I相隔间距202,其中间距202小于名义间距106。 2 440 pulse burst and pulse burst 440 by spacing 202 I, wherein spacing 202 is less than nominal spacing 106. 此外,突发440中的脉冲2与突发440中的脉冲3相隔间距204,其中间距204大于名义间距106。 In addition, pulse 2 in burst 440 and 440 from pulse 3 in burst spacing 204, wherein spacing 204 is greater than nominal spacing 106. 突发440中的脉冲4与突发440中的脉冲3相隔间距204,其中间距204大于名义间距106。 4 440 pulse burst and pulse 3 in burst 440 by spacing 204, wherein spacing 204 is greater than nominal spacing 106.

[0045] 图5示出了申请人的伺服模式500。 [0045] FIG. 5 shows a servo pattern 500 of the applicant. 相对于名义间距106 (图1A),已改变突发510和520中的脉冲之间的间距以编码第一位信息。 With respect to the nominal spacing 106 (FIG. 1A), it has burst 510 and 520 to change the spacing between the pulses of the first bit to encode information. 此外,相对于名义间距106(图1A),已改变突发530和540中的脉冲之间的间距以编码用于纠错目的的奇偶校验位。 In addition, with respect to the nominal spacing 106 (FIG. 1A), it has burst 530 and 540 to change the spacing between the pulses to the parity bit for error correction coding purposes. 使用申请人的方法,伺服模式500因此编码两个位,第一位表示一位信息,第二位表示用于纠错目的的奇偶校验位。 Applicants using methods, servo pattern 500 thus encodes two bits, the first bit represents a message for the second bit indicates a parity bit error correction purposes. 在特定实施例中,这两个位表示二进制符号对(0,0),其中信息位和奇偶校验位都采用逻辑值“O”。 In a particular embodiment, these bits represent binary symbols (0,0), wherein the information bits and parity bits using a logical value "O". 要指出的是,奇偶校验位的引入不会影响y位置估计的计算,因为A间隔总和以及B间隔总和产生与名义间距(图1C)的情况相同的值。 It is noted that the introduction of the parity bit does not affect the calculation of the y-position estimate, as the sum of the A intervals and B intervals to produce the sum and the nominal spacing (FIG. 1C) in the case of the same value.

[0046] 突发510中的脉冲2与突发510中的脉冲I相隔间距204,其中间距204大于名义间距106。 [0046] 510 pulse burst and 2 in burst 510 by spacing 204 pulse I, wherein spacing 204 is greater than nominal spacing 106. 此外,突发510中的脉冲2与突发510中的脉冲3相隔间距202,其中间距202小于名义间距106。 In addition, pulse 2 in burst 510 and 510 from pulse 3 in burst spacing 202, wherein spacing 202 is less than nominal spacing 106. 突发510中的脉冲4与突发510中的脉冲3相隔间距202,其中间距202小于名义间距106。 4 510 pulse burst and burst 510 by spacing 202 pulse 3, wherein spacing 202 is less than nominal spacing 106. 此外,突发510中的脉冲4与突发510中的脉冲5相隔间距204,其中间距204大于名义间距106。 In addition, the pulse burst 510 4 5 pulse burst 510 by spacing 204, wherein spacing 204 is greater than nominal spacing 106.

[0047] 在图5的例示实施例中,相对于名义间距106(图1A),已经以与突发510中类似的方式改变突发520中的脉冲之间的间距。 [0047] In the illustrated embodiment of FIG. 5 embodiment, with respect to the nominal spacing 106 (Figure 1A), with the burst 510 has a similar manner to change the spacing between bursts of 520 pulses. 突发520中的脉冲2与突发520中的脉冲I相隔间距204,其中间距204大于名义间距106。 2 520 pulse burst and pulse burst 520 by spacing 204 I, wherein spacing 204 is greater than nominal spacing 106. 此外,突发520中的脉冲2与突发520中的脉冲3相隔间距202,其中间距202小于名义间距106。 In addition, pulse 2 in burst 520 and 520 from pulse 3 in burst spacing 202, wherein spacing 202 is less than nominal spacing 106. 突发520中的脉冲4与突发520中的脉冲3相隔间距202,其中间距202小于名义间距106。 4 520 pulse burst and burst 520 by spacing 202 pulse 3, wherein spacing 202 is less than nominal spacing 106. 此外,突发520中的脉冲4与突发520中的脉冲5相隔间距204,其中间距204大于名义间距106。 In addition, the pulse burst 520 4 5 pulse burst 520 by spacing 204, wherein spacing 204 is greater than nominal spacing 106.

[0048] 突发530中的脉冲2与突发530中的脉冲I相隔间距204,其中间距204大于名义间距106。 [0048] 530 pulse burst and 2 in burst 530 by spacing 204 pulse I, wherein spacing 204 is greater than nominal spacing 106. 此外,突发530中的脉冲2与突发530中的脉冲3相隔间距202,其中间距202小于名义间距106。 In addition, pulse 2 in burst 530 and 530 from pulse 3 in burst spacing 202, wherein spacing 202 is less than nominal spacing 106. 突发530中的脉冲4与突发530中的脉冲3相隔间距202,其中间距202小于名义间距106。 4 530 pulse burst and burst 530 by spacing 202 pulse 3, wherein spacing 202 is less than nominal spacing 106.

[0049] 在图5的例示实施例中,相对于名义间距106(图1A),已经以与突发530中类似的方式改变突发540中的脉冲之间的间距。 [0049] In the illustrated embodiment of FIG. 5 embodiment, with respect to the nominal spacing 106 (Figure 1A), with the burst 530 has a similar manner to change the spacing between bursts of 540 pulses. 突发540中的脉冲2与突发540中的脉冲I相隔间距204,其中间距204大于名义间距106。 2 540 pulse burst and pulse burst 540 by spacing 204 I, wherein spacing 204 is greater than nominal spacing 106. 此外,突发540中的脉冲2与突发540中的脉冲3相隔间距202,其中间距202小于名义间距106。 In addition, pulse 2 in burst 540 and 540 from pulse 3 in burst spacing 202, wherein spacing 202 is less than nominal spacing 106. 突发540中的脉冲4与突发540中的脉冲3相隔间距202,其中间距202小于名义间距106。 4 540 pulse burst and burst 540 by spacing 202 pulse 3, wherein spacing 202 is less than nominal spacing 106.

[0050] 图6示出了申请人的伺服模式600。 [0050] FIG. 6 illustrates a servo pattern 600 of the applicant. 相对于名义间距106 (图1A),已改变突发610和620中的脉冲之间的间距以编码第一位信息。 With respect to the nominal spacing 106 (FIG. 1A), the pitch has been changed to encode the first burst information 610 and 620 between the pulses. 此外,相对于名义间距106(图1A),已改变突发630和640中的脉冲之间的间距以编码用于纠错目的的奇偶校验位。 In addition, with respect to the nominal spacing 106 (FIG. 1A), it has burst 630 and 640 to change the spacing between the pulses to the parity bit for error correction coding purposes. 使用申请人的方法,伺服模式600因此编码两个位,第一位表示一位信息,第二位表示用于纠错目的的奇偶校验位。 Applicants using methods, servo pattern 600 thus encodes two bits, the first bit represents a message for the second bit indicates a parity bit error correction purposes. 在特定实施例中,这两个位表示二进制符号对(1,0),其中信息位采用逻辑值“I”而奇偶校验位采用逻辑值“O”。 In a particular embodiment, these two bits represent binary symbols (1,0), wherein the information bit takes the logical value "I" and the parity bit takes the logical value "O". 要指出的是,奇偶校验位的引入不会影响y位置估计的计算,因为A间隔总和以及B间隔总和产生与名义间距(图1C)的情况相同的值。 It is noted that the introduction of the parity bit does not affect the calculation of the y-position estimate, as the sum of the A intervals and B intervals to produce the sum and the nominal spacing (FIG. 1C) in the case of the same value.

[0051] 突发610中的脉冲2与突发610中的脉冲I相隔间距202,其中间距202小于名义间距106。 [0051] 610 pulse burst and 2 in burst 610 by spacing 202 pulse I, wherein spacing 202 is less than nominal spacing 106. 此外,突发610中的脉冲2与突发610中的脉冲3相隔间距204,其中间距204大于名义间距106。 In addition, pulse 2 in burst 610 and 610 from pulse 3 in burst spacing 204, wherein spacing 204 is greater than nominal spacing 106. 突发610中的脉冲4与突发610中的脉冲3相隔间距204,其中间距204大于名义间距106。 4 610 pulse burst and pulse 3 in burst 610 by spacing 204, wherein spacing 204 is greater than nominal spacing 106. 此外,突发610中的脉冲4与突发610中的脉冲5相隔间距202,其中间距202小于名义间距106。 In addition, the pulse burst 610 4 5 pulses in burst 610 by spacing 202, wherein spacing 202 is less than nominal spacing 106.

[0052] 在图6的例示实施例中,相对于名义间距106(图I),已经以与突发610中类似的方式改变突发620中的脉冲之间的间距。 [0052] In the illustrated embodiment of FIG. 6 embodiment, with respect to the nominal spacing 106 (Figure I), with the burst 610 has a similar manner to change the spacing between bursts of 620 pulses. 突发620中的脉冲2与突发620中的脉冲I相隔间距202,其中间距202小于名义间距106。 2 620 pulse burst and pulse burst 620 by spacing 202 I, wherein spacing 202 is less than nominal spacing 106. 此外,突发620中的脉冲2与突发620中的脉冲3相隔间距204,其中间距204大于名义间距106。 In addition, pulse 2 in burst 620 and 620 from pulse 3 in burst spacing 204, wherein spacing 204 is greater than nominal spacing 106. 突发620中的脉冲4与突发620中的脉冲3相隔间距204,其中间距204大于名义间距106。 4 620 pulse burst and burst 620 by spacing 204 pulse 3, wherein spacing 204 is greater than nominal spacing 106. 此外,突发620中的脉冲4与突发620中的脉冲5相隔间距202,其中间距202小于名义间距106。 In addition, the burst 620 of pulses 4 and 5 pulses in burst 620 by spacing 202, wherein spacing 202 is less than nominal spacing 106.

[0053] 突发630中的脉冲2与突发630中的脉冲I相隔间距204,其中间距204大于名义间距106。 [0053] 630 pulse burst and 2 in burst 630 by spacing 204 pulse I, wherein spacing 204 is greater than nominal spacing 106. 此外,突发630中的脉冲2与突发630中的脉冲3相隔间距202,其中间距202小于名义间距106。 In addition, pulse 2 in burst 630 and 630 from pulse 3 in burst spacing 202, wherein spacing 202 is less than nominal spacing 106. 突发630中的脉冲4与突发630中的脉冲3相隔间距202,其中间距202小于名义间距106。 4 630 pulse burst and burst 630 by spacing 202 pulse 3, wherein spacing 202 is less than nominal spacing 106.

[0054] 在图6的例示实施例中,相对于名义间距106(图1A),已经以与突发630中类似的方式改变突发640中的脉冲之间的间距。 [0054] In the illustrated embodiment of FIG. 6 embodiment, with respect to the nominal spacing 106 (Figure 1A), with the burst 630 has a similar manner to change the spacing between bursts of 640 pulses. 突发640中的脉冲2与突发640中的脉冲I相隔间距204,其中间距204大于名义间距106。 2 640 pulse burst and pulse burst 640 by spacing 204 I, wherein spacing 204 is greater than nominal spacing 106. 此外,突发640中的脉冲2与突发640中的脉冲3相隔间距202,其中间距202小于名义间距106。 In addition, pulse 2 in burst 640 and 640 from pulse 3 in burst spacing 202, wherein spacing 202 is less than nominal spacing 106. 突发640中的脉冲4与突发640中的脉冲3相隔间距202,其中间距202小于名义间距106。 4 640 pulse burst and burst 640 by spacing 202 pulse 3, wherein spacing 202 is less than nominal spacing 106.

[0055] 图7示出了申请人的伺服模式700。 [0055] Figure 7 shows a servo pattern 700 of the applicant. 相对于名义间距106 (图1A),已改变突发710和720中的脉冲之间的间距以编码第一位信息。 With respect to the nominal spacing 106 (FIG. 1A), it has been changed in the burst 710 and the spacing between the pulses 720 to encode the first information. 此外,相对于名义间距106(图1A),已改变突发730和740中的脉冲之间的间距以编码用于纠错目的的奇偶校验位。 In addition, with respect to the nominal spacing 106 (FIG. 1A), it has changed the burst pitch 730 and 740 between the pulses to encode a parity bit for error correction purposes. 使用申请人的方法,伺服模式700因此编码两个位,第一位表示一位信息,第二位表示用于纠错目的的奇偶校验位。 Applicants using methods, servo pattern 700 thus encodes two bits, the first bit represents a message for the second bit indicates a parity bit error correction purposes. 在特定实施例中,这两个位表示二进制符号对(0,I),其中信息位采用逻辑值“0”而奇偶校验位采用逻辑值“I”。 In a particular embodiment, these two bits represent binary symbols (0, I), wherein the information bit takes the logical value "0" and the parity bit takes the logical value "I". 要指出的是,奇偶校验位的引入不会影响y位置估计的计算,因为A间隔总和以及B间隔总和产生与名义间距(图1C)的情况相同的值。 It is noted that the introduction of the parity bit does not affect the calculation of the y-position estimate, as the sum of the A intervals and B intervals to produce the sum and the nominal spacing (FIG. 1C) in the case of the same value.

[0056] 突发710中的脉冲2与突发710中的脉冲I相隔间距204,其中间距204大于名义间距106。 [0056] 710 pulse burst and 2 in burst 710 by spacing 204 pulse I, wherein spacing 204 is greater than nominal spacing 106. 此外,突发710中的脉冲2与突发710中的脉冲3相隔间距202,其中间距202小于名义间距106。 In addition, pulse 2 in burst 710 and burst 710 by spacing 202 pulse 3, wherein spacing 202 is less than nominal spacing 106. 突发710中的脉冲4与突发710中的脉冲3相隔间距202,其中间距202小于名义间距106。 4 710 pulse burst and pulse 3 in burst 710 by spacing 202, wherein spacing 202 is less than nominal spacing 106. 此外,突发710中的脉冲4与突发710中的脉冲5相隔间距204,其中间距204大于名义间距106。 In addition, the pulse burst 710 4 5 pulse burst 710 by spacing 204, wherein spacing 204 is greater than nominal spacing 106.

[0057] 在图7的例示实施例中,相对于名义间距106(图1A),已经以与突发710中类似的方式改变突发720中的脉冲之间的间距。 [0057] In the illustrated embodiment of FIG. 7 embodiment, with respect to the nominal spacing 106 (Figure 1A), with the burst 710 has a similar manner to change the spacing between bursts of 720 pulses. 突发720中的脉冲2与突发720中的脉冲I相隔间距204,其中间距204大于名义间距106。 2 720 pulse burst and pulse burst 720 by spacing 204 I, wherein spacing 204 is greater than nominal spacing 106. 此外,突发720中的脉冲2与突发720中的脉冲3相隔间距202,其中间距202小于名义间距106。 In addition, pulse 2 in burst 720 and 720 from pulse 3 in burst spacing 202, wherein spacing 202 is less than nominal spacing 106. 突发720中的脉冲4与突发720中的脉冲3相隔间距202,其中间距202小于名义间距106。 4 720 pulse burst and burst 720 by spacing 202 pulse 3, wherein spacing 202 is less than nominal spacing 106. 此外,突发720中的脉冲4与突发720中的脉冲5相隔间距204,其中间距204大于名义间距106。 In addition, the pulse burst 720 4 5 pulse burst 720 by spacing 204, wherein spacing 204 is greater than nominal spacing 106.

[0058] 突发730中的脉冲2与突发730中的脉冲I相隔间距202,其中间距202小于名义间距106。 [0058] 730 pulse burst and 2 in burst 730 by spacing 202 pulse I, wherein spacing 202 is less than nominal spacing 106. 此外,突发730 中的脉冲2与突发730中的脉冲3相隔间距204,其中间距204大于名义间距106。 In addition, pulse 2 in burst 730 and 730 from pulse 3 in burst spacing 204, wherein spacing 204 is greater than nominal spacing 106. 突发730中的脉冲4与突发730中的脉冲3相隔间距204,其中间距204大于名义间距106。 4 730 pulse burst and pulse 3 in burst 730 by spacing 204, wherein spacing 204 is greater than nominal spacing 106.

[0059] 在图7的例示实施例中,相对于名义间距106(图1A),已经以与突发730中类似的方式改变突发740中的脉冲之间的间距。 [0059] In the illustrated embodiment of FIG. 7 embodiment, with respect to the nominal spacing 106 (Figure 1A), with the burst 730 has a similar manner to change the spacing between bursts of 740 pulses. 突发740中的脉冲2与突发740中的脉冲I相隔间距202,其中间距202小于名义间距106。 2 740 pulse burst and pulse burst 740 by spacing 202 I, wherein spacing 202 is less than nominal spacing 106. 此外,突发740中的脉冲2与突发740中的脉冲3相隔间距204,其中间距204大于名义间距106。 In addition, pulse 2 in burst 740 and 740 from pulse 3 in burst spacing 204, wherein spacing 204 is greater than nominal spacing 106. 突发740中的脉冲4与突发740中的脉冲3相隔间距204,其中间距204大于名义间距106。 4 740 pulse burst and pulse 3 in burst 740 by spacing 204, wherein spacing 204 is greater than nominal spacing 106.

[0060] 在特定实施例中,申请人的顺序信息存储介质包括沿其长度顺序编码的多个伺服模式。 [0060] In a particular embodiment, Applicants sequence information storage medium comprises a plurality of servo pattern along its length coding sequence. 在特定实施例中,申请人的方法聚合顺序多个伺服模式中编码的信息以形成一个或多个字。 In a particular embodiment, a plurality of sequential polymerization applicant information encoded in the servo pattern to form one or more words. 在特定实施例中,申请人的方法聚合36个顺序伺服模式中编码的信息以形成三个字,其中在四个顺序伺服模式中编码的信息包括制造商信息,并且其中在八个顺序伺服模式中编码的信息包括同步信息,并且其中在二十四(24)个顺序伺服模式中编码的信息包括LPOS信息。 In a particular embodiment, the method of polymerization of the applicant 36 sequential servo patterns to form encoded information words, wherein the four sequential servo patterns encoded information includes manufacturer information, and wherein the eight sequential servo patterns The coded information includes synchronization information, and wherein the twenty-four (24) sequential servo patterns encoded LPOS information includes information.

[0061] 使用图2和3的现有技术伺服模式,四个顺序伺服模式共同用于编码包括总计4位信息的制造商信息。 [0061] The prior art servo pattern 2 and 3, the four sequential servo patterns used to encode a common manufacturer information comprises a total of four bits of information. 使用图4、5、6和7的申请人的伺服模式,四个顺序伺服模式共同用于编码包括总计4位信息的制造商信息和4个奇偶校验位。 Use of FIG. 5, 6 and 7 of the applicant servo pattern, a common four sequential servo patterns used to encode manufacturer information including information of a total of four and four parity bits. 如本领域的技术人员将理解的,与使用现有技术伺服模式相比,使用申请人的伺服模式允许在解码制造商信息时提供更高的可靠性。 As those skilled in the art will appreciate, as compared with prior art servo patterns, the servo pattern allows the use of the applicant's offer higher manufacturer information in decoding reliability.

[0062] 使用图4、5、6和7的申请人的伺服模式,在特定实施例中,申请人的在顺序信息存储介质的非数据部分中编码信息的方法使用简单重复码编码包括四个顺序伺服突发的制造商信息。 [0062] The applicant of servo patterns used in FIG 5, 6 and 7, in a particular embodiment, the method for encoding information in the applicant using a simple repetition code in a non-data encoding portion comprises four sequential information storage medium sequential servo burst manufacturer information. 在特定实施例中,申请人的在顺序信息存储介质的非数据部分中编码信息的方法使用更复杂的一位纠错扩展汉明码编码包括四个顺序伺服突发的制造商信息。 In a particular embodiment, the method for encoding information in the applicant's use of more sophisticated error-correcting extended Hamming code comprises four sequential servo bursts manufacturer information in the data portion of the non-sequential information storage medium. 备选地,可以使用下文所述的申请人的RS ECC为制造商信息提供更强的保护。 Alternatively, you can use the RS ECC applicants below provide greater protection for the manufacturer information.

[0063] 使用图2和3的现有技术伺服模式,八个顺序伺服模式共同用于编码包括总计8位信息的同步信息。 Prior art servo pattern [0063] FIG. 2 and 3, the eight sequential servo patterns used to encode common synchronization information comprises a total of 8 information. 使用图4、5、6和7的申请人的伺服模式,八个顺序伺服模式共同用于编码包括总计16位的同步信息。 Use of FIG. 5, 6 and 7 of the applicant servo pattern, common for the eight sequential servo patterns comprises a total of 16 coded synchronization information. 如本领域的技术人员将理解的,使用申请人的伺服模式允许编码的同步信息量是使用包括用于恢复LPOS信息的纠错能力的现有技术伺服模式的两倍。 As those skilled in the art will appreciate, the use of applicant encoded servo pattern allows the synchronization information including the error correction capability is used twice for recovering LPOS information of the servo pattern of the prior art. 在特定实施例中,申请人的用于在顺序信息存储介质的非数据部分中编码信息的方法对包括16位同步模式1100000000000000的同步信息进行编码。 In a particular embodiment, the applicant for the non-data portion in the order information storage medium including a method of coding information 16 of the synchronization pattern 1100000000000000 synchronization information is encoded. 要指出的是,通过使用重复码从LTO同步模式获得16位同步模式。 It is noted that the 16-bit synchronization pattern obtained from the LTO synchronous mode by using repetition code. 申请人的16位同步模式提供了增强的噪声鲁棒性。 Applicant's 16 synchronous mode provides enhanced noise robustness.

[0064] 使用图2和3的现有技术伺服模式,24个顺序伺服模式共同用于编码包括总计24位信息的LPOS信息。 [0064] The prior art servo pattern 2 and 3, the joint 24 sequential servo patterns used to encode LPOS information comprises a total of 24 bits of information. 使用图4、5、6和7的申请人的伺服模式,申请人的顺序24个伺服模式用于编码包括总计24位信息的LPOS信息和24个奇偶校验位。 Use Applicant Figure 5, 6 and 7 of the servo pattern, order the applicant's 24 servo patterns used to encode LPOS Total includes 24 information and 24 parity bits. 如本领域的技术人员将理解的,与使用现有技术伺服模式相比,使用申请人的伺服模式允许在解码LPOS信息时提供更高的可靠性。 As those skilled in the art will appreciate, as compared with prior art servo patterns, the servo pattern allows the use of the applicant's decoded LPOS information in higher reliability.

[0065] 在特定实施例中,使用申请人的伺服模式提高了在顺序数据存储介质(例如磁带)中编码的制造商信息和/或同步信息和/或LPOS信息的可靠性。 [0065] In a particular embodiment, the use of the applicant's servo patterns in order to improve the data storage medium (such as tape) encoded manufacturer information and / or synchronization information and / or reliability of LPOS information. 如上所述,申请人的每个伺服模式编码2个位,其中第一突发连同第二突发一起对第一位进行编码,并且其中第三突发连同第四突发一起对第二位进行编码。 Each servo pattern coding as described above, the applicant's two bits, which together with the first burst along with a second burst of the first encoded, and wherein the third sudden burst together along with fourth place to second encoding. 在申请人的用于在顺序数据存储介质的非数据区域中编码信息的方法的特定实施例中,申请人的每个伺服模式编码第一位和第二位,其中所述第一位包括信息位,而所述第二位包括“奇偶校验位”。 In a particular applicant for a method to encode information in the non-sequential data storage medium of the embodiment of the data area, each servo pattern encodes applicant first and second bits, wherein the first information comprises bits, while the second comprises a "parity bit." 如果申请人的方法的实施例包括重复码,则在每个伺服模式中对所述第二位进行解码以便包括与所述第一位相同的值。 If Applicant's method embodiment comprises a repetition code, then in each of the servo pattern in the second decoding so as to include the first bit of the same value. 在这些使用重复编码的实施例中,如果无法读取编码在申请人的伺服模式之一中的第一位,则申请人的方法将使用所述第二位的解码后的值代替不可读取的第一位的值。 In these embodiments using repetition coding, if one of the applicants can not read the encoded servo pattern of the first, the applicant's method instead of using the value of the second decoded unreadable The first bit of value.

[0066] 在特定实施例中,申请人的方法解释24位LPOS字以包括八⑶个不同的3位符号。 [0066] In a particular embodiment, the applicant way to explain 24 LPOS word to include eight ⑶ three different symbols. 在上述“奇偶校验位”实施方式中使用申请人的伺服模式,里德-所罗门纠错码(“RSECC")的使用允许纠正损坏的3位符号。 Applicants servo patterns using the above "parity" embodiment, Reed - Solomon error correction code ("RSECC") allows the correct use of a damaged three symbols.

[0067] 在一个优选实施例中,“RS ECC”是伽罗瓦域GF (8)上的[n = 8, k = 4, d = 5]单独扩展里德-所罗门(RS)码,其中代码字长度为n = 8个符号,代码大小(code dimension)为k = 4个符号,最小代码距离为d = 5,即,所述代码允许纠正8符号RS代码字内的任何两个错误符号、或纠正8符号RS代码字内的任何一个错误符号和任何两个已擦除符号、或纠正8符号RS代码字内的任何四个已擦除符号。 [0067] In a preferred embodiment, "RS ECC" is the Galois field GF (8) on the [n = 8, k = 4, d = 5] individually extended Reed - Solomon (RS) codes, wherein codeword length n = 8 symbols, the code size (code dimension) is k = 4 symbols, the code minimum distance d = 5, i.e., the code allows to correct any errors of two RS symbols 8 symbols within the code word , or correct any error symbol 8 symbol RS code word, and erased any two symbols, or correct any of the four symbols 8 symbols erased RS a code word. 已擦除符号是一种错误符号,其在代码字内的位置是已知的,但错误符号的实际值未知。 Erased symbol is a symbol error, its location in the code word is known, but the actual value of the error symbols is unknown.

[0068] 要指出的是,通常伽罗瓦域具有pm个元素(其中P>1为质数,m>0为整数)并被称为GF(pm)。 [0068] It is noted that, generally having pm Galois field elements (where P> 1 is a prime number, m> 0 is an integer) and is referred to as GF (pm). 在所述优选实施例中,p = 2并且m = 3,因此GF⑶中的里德-所罗门码的符号为8进位(8-ary)并可由3位行向量表示。 In the preferred embodiment, p = 2 and m = 3, and therefore GF⑶ the Reed - Solomon code symbols to carry 8 (8-ary) may be represented by a three row vector. 对于所述优选实施例,伽罗瓦域GF(8)中的计算由本原多项式P(X) = x3+x+l定义。 For the preferred embodiment, the Galois field GF (8) are calculated by a primitive polynomial P (X) = x3 + x + l is defined. GF⑶中的本原元素为a = (010)。 GF⑶ the primitive element a = (010). 此外,所述优选实施例的生成多项式为G(x) = (x+a) (x+a2) (x+a3) = x3+a6x2+ax+a6,其中加法和乘法在GF(8)中定义。 In addition, the preferred embodiment of the generator polynomial implemented as G (x) = (x + a) (x + a2) (x + a3) = x3 + a6x2 + ax + a6, where the addition and multiplication in GF (8) in definition. 图11示出了GF(S)中的计算的指数记数法和二进制记数法以及从GF(S)上的[n = 8,k = 4,d = 5]单独扩展RS码生成代码字的系统编码器。 Figure 11 shows a GF (S) in the calculation of the exponential notation and binary notation as well as from GF (S) on the [n = 8, k = 4, d = 5] extended RS code alone generated code word The system encoder. RS代码字由[Q1 Q2Q3 Q4 Q5 Q6 Q7 Q8]表示。 RS code word is represented by [Q1 Q2Q3 Q4 Q5 Q6 Q7 Q8]. 每个RS代码字中的前四个符号qp Q2> Q3> Q4是要进行RS编码的信息符号。 Each RS code word of the first four symbols qp Q2> Q3> Q4 is to be RS encoded information symbols. 因此,图11中的编码器为系统编码器。 Thus, in FIG. 11 encoder system encoder. 1奇偶校验符号(15、%、+、%被计算为信息符号qp Q2> Q3> Q4的函数。如图11中所示,使用在GF⑶中执行加法和乘法的反馈移位寄存器电路完成此计算。由此,反馈移位寄存器电路的所有寄存器在GF(8)中被初始设置为0符号。寄存器R0、R1和R2的宽度为3位。然后将信息符号qi、q2、q3、q4按顺序馈入编码器。处理完必需的符号之后,R2的内容为q5,Rl的内容为q6,RO的内容为q7。整体奇偶校验符号q8作为最后一个奇偶校验符号被添加在RS代码字的末尾。 1 parity symbols (15,%, +,% is calculated as information symbols qp Q2> Q3> Q4 function As shown in FIG. 11, the use of addition and multiplication in the implementation of the feedback shift register circuit GF⑶ complete This calculation. Thus, all the feedback shift register circuit registers in GF (8) is initially set to 0 symbols registers R0, R1 and R2 width of 3. Then the information symbol qi, q2, q3, q4 After sequentially fed into the encoder. After processing necessary symbols for the content of R2 q5, content Rl is q6, the content of RO is q7. q8 overall parity symbols as the last one parity symbol is added to the RS codes end of the word.

[0069] 现在参考图8A,LPOS字800包括24个顺序伺服模式,即顺序伺服模式802、804、806、808、810、812、814、816、818、820、822、824、826、828、830、832、834、836、838、840、842、844,846以及848。 [0069] Referring now to Figure 8A, LPOS word 800 includes 24 sequential servo patterns, i.e., sequential servo patterns 802,804,806,808,810,812,814,816,818,820,822,824,826,828, 830,832,834,836,838,840,842,844,846 and 848. 这24个伺服摸式中的每个伺服模式都编码两个位。 This 24 servo touch-type servo pattern for each encode two bits. 例如,伺服模式802编码位U1和位C1,其中第一突发中的脉冲的间距和第二突发中的脉冲的间距编码位U1 (信息位),并且其中第三突发中的脉冲的间距和第四突发中的脉冲的间距编码位C1 (奇偶校验位)。 For example, servo pattern 802 bit coded bits U1 and C1, wherein the pitch of the first burst and the second burst pulse spacing of a pulse coded bits U1 (information bits), and wherein the third burst of pulses spacing and a fourth burst pulse spacing coded bits C1 (parity). 出于与旧式LTO硬件的兼容性的原因,由第一突发中的脉冲的间距和第二突发中的脉冲的间距编码的位被选择作为LPOS字中的LPOS信息位,如LTO中规定的那样。 For compatibility with legacy hardware LTO reasons, the encoded pitch pulse position in the first burst and the second burst pitch pulse is selected as the LPOS word LPOS information bits, as specified in LTO as.

[0070] 现在参考图8B,由两个交织RS代码字800对LPOS字中的24个信息位进行编码。 [0070] Referring now to Figure 8B, by two interleaved RS codewords 800 pairs LPOS word 24 bits to encode the information. 两个交织RS代码字800包括八个3位符号对,即3位符号对850、855、860、865、870、875、880以及885。 Two interleaved RS codewords 800 includes eight three symbols that three symbols 850,855,860,865,870,875,880 and 885. GF⑶中的每个符号对都包括信息符号[U3i+1,U3i+2,U3i+3](其中i = 0,...,7)和奇偶校验符号[C3i+1,C3i+2,C3i+3](其中i = 0,...,7)。 GF⑶ each symbol of the information symbol comprises [U3i + 1, U3i + 2, U3i + 3] (where i = 0, ..., 7), and parity symbols [C3i + 1, C3i + 2, C3i + 3] (where i = 0, ..., 7). 使用图4、5、6和7的申请人的伺服模式(即,使用申请人的“奇偶校验位”编码)并使用申请人的RS ECC,申请人的在顺序信息存储介质的非数据部分中编码信息的方法可以纠正800中包括的每个RS代码字中的八个3位符号中的最多两个3位符号。 Applicants using FIG. 5, 6 and 7 of the servo pattern (i.e., the use of the applicant's "parity bit" code) using the applicant's RS ECC, the applicant in the data portion of the non-sequential information storage medium The method of coding information of each RS code word can correct 800 included in the eight three symbols up to two three symbols. 此外,使用图4、5、6和7的申请人的伺服模式(即,使用申请人的“奇偶校验位”编码)并使用申请人的RS ECC,申请人的方法可以纠正800中与0. 8mm 突发纠错对应的任何8 位[U」,Cj, UJ+1, CJ+1, UJ+2, CJ+2, UJ+3, CJ+3](其中I < = j < =21)或[Cj, UJ+1, CJ+1, UJ+2, CJ+2, Uj+3,CJ+3, UJ+4](其中I <= j < = 20)突发。 In addition, the applicant using FIG. 5, 6 and 7 of the servo pattern (i.e., the use of the applicant's "parity bit" code) using the applicant's RS ECC, Applicants method 800 can be corrected with 0 . 8mm burst error correction corresponding to any 8 [U ", Cj, UJ + 1, CJ + 1, UJ + 2, CJ + 2, UJ + 3, CJ + 3] (where I <= j <= 21 ) or [Cj, UJ + 1, CJ + 1, UJ + 2, CJ + 2, Uj + 3, CJ + 3, UJ + 4] (where I <= j <= 20) bursts.

[0071] 在特定实施例中,图8A的24个顺序伺服模式因此将24位纵向位置信息编码为两个交织RS代码字,其中每个RS代码字都包括八个3位符号[qi Q2 Q3 Q4 Q5 Q6 Q7 q8]。 [0071] In a particular embodiment, FIG. 8A 24 sequential servo patterns 24 therefore longitudinal position information encoded into two interleaved RS codewords, wherein each RS code word comprises eight three symbol [qi Q2 Q3 Q4 Q5 Q6 Q7 q8]. 例如,现在参考图8A、8B、9和10,图8A的24个伺服模式编码第一RS代码字900和第二RS代码字1000,其中在图8B中示出了GF(8)中属于RS代码字的符号对。 For example, referring now to FIG. 8A, 8B, 9 and 10, 24 in FIG. 8A encoded servo pattern of the first RS codeword 900 and a second RS codeword 1000, which in FIG. 8B illustrates a GF (8) belonging RS codeword symbols right. 第一RS代码字900包括四个3 位符号对910、920、930 和940,其中qi = [U1, U2, U3],q2 = [U7, U8, U9],q3 = [U13,Uh U15],q4 — [U19, U20J U21],q5 — [C1, C2, C3],q6 — [C7, C8, C9],q7 — [C13, C14, C15],q8 —[C19, C20, C21]。 The first RS code word 900 includes four three symbols 910,920,930 and 940, where qi = [U1, U2, U3], q2 = [U7, U8, U9], q3 = [U13, Uh U15 ], q4 - [U19, U20J U21], q5 - [C1, C2, C3], q6 - [C7, C8, C9], q7 - [C13, C14, C15], q8 - [C19, C20, C21] . 第二RS代码字1000包括四个3位符号对1010、1020、1030和1040,其中q:—[U4j U5, U6],q2 — [U10, U11, U12],q3 — [U16,U17, U18],q4 — [U22 U23 U24],q5 — [C4, C5, C6],Q6 = [C10, C11, C12],Q7 = [C16, C17, C18],Q8 = [C22, C23, C24]。 The second RS codeword 1000 including four 3 symbols 1010, 1020 and 1040, where q: - [U4j U5, U6], q2 - [U10, U11, U12], q3 - [U16, U17, U18 ], q4 - [U22 U23 U24], q5 - [C4, C5, C6], Q6 = [C10, C11, C12], Q7 = [C16, C17, C18], Q8 = [C22, C23, C24 ]. 第一RS 代码字900 与第二RS代码字1000交织。 The first RS code word 900 and the second RS codeword 1000 intertwined.

[0072] 在特定实施例中,使用伽罗瓦域GF(2)上的[n = 8,k = 4,d = 4]扩展汉明码来编码由LTO规定的LPOS字中的4位制造商信息Lt1 t2 t3 t4],其中代码字长度为n = 8个位,代码大小为k = 4个位,最小代码距离为d = 4,即,所述代码允许纠正8位扩展汉明代码字内的任何一个错误位。 [0072] In a particular embodiment, the use of Galois field GF (2) on a [n = 8, k = 4, d = 4] extended Hamming code encoded by a predetermined LTO LPOS word 4 Manufacturer Information Lt1 t2 t3 t4], where the codeword length of n = 8 bits, the code size is k = 4 bits, the minimum distance of the code d = 4, that is, the code allows to correct eight extended Hamming code word Any one error bit. 图12示出了用于从GF(2)上的[n = 8,k = 4,d = 4]扩展汉明码生成代码字的系统编码规则。 Figure 12 illustrates a from GF [n = 8, k = 4, d = 4] (2) on the extended Hamming codeword generation system encoding rules. 扩展汉明代码字由Lt1 t2 t3 t4 P1 p2 p3 p4]表示。 Extended Hamming code word by the Lt1 t2 t3 t4 P1 p2 p3 p4] FIG. 每个代码字V t2、t3、t4中的前四位是要编码的信息位。 Each code word V t2, t3, t4 is the first four bits of information to be encoded. 因此,图12中的编码规则定义了系统编码器。 Thus, in FIG. 12 encoding rules define the system encoder. 奇偶校验位? Parity? 1、? 1 ,? 2、? 2 ,? 3、? 3 ,? 4被计算为信息位〖1、〖2、〖3、〖4的函数。 4 is calculated as information bits 〖1〗 2, 〖3〗 function 4. 根据申请人的“奇偶校验位”编码方法,通过交织信息位和奇偶校验位来编写代码字。 According to the applicant, "parity" encoding method, by interleaving the information bits and the parity bit code word. 每个伺服模式因此编码一对位(ty Pi), i = 1,2,3,4。 Thus each servo pattern encodes one pair of bits (ty Pi), i = 1,2,3,4. 由第一突发中的脉冲的间距和第二突发中的脉冲的间距编码的位被选择作为制造商信息位,而由第三突发中的脉冲的间距和第四突发中的脉冲的间距编码的位被选择作为奇偶校验位。 From the first pulse burst and a second burst spacing pitch pulse coded bits is selected as the manufacturer information bits, while the third burst pulse spacing and the fourth burst pulse The distance-coded bits are selected as the parity bit.

[0073] 使用申请人的“奇偶校验位”编码的优点包括避免了由包含用于恢复LPOS信息的纠错能力的现有技术伺服模式引起的解码延迟。 [0073] The applicant of "parity" coding advantages include avoiding the decoding by the error correction capability to restore LPOS contains information prior art servo patterns caused by delay.

[0074] 使用申请人的“奇偶校验位”编码的进一步优点包括使原始LPOS字如针对LTO磁带驱动器规定的那样保持完整。 [0074] A further advantage of the use of the applicant's "parity" includes the original encoded LPOS word as intact for the LTO tape drive requirements. 因此,旧式硬件无需任何修改即可读取新的格式。 Therefore, without any modification to the legacy hardware to read the new format. [0075] 申请人的发明还包括制品,例如但不限于磁带驱动装置、数据存储控制器、自动数据存储库、包括存储管理程序并与数据存储库通信的主机计算设备,其中所述制品包括包含计算机可读程序代码的计算机可读介质,所述计算机可读程序代码包括一系列计算机可读程序步骤以实现在顺序信息存储介质的一个或多个非数据区域中编码申请人的多个伺服模式、和/或解码在申请人的多个伺服模式中编码的信息,和/或使用申请人的里德-所罗门纠错码来纠正从包括在所述存储介质的一个或多个非数据区域中编码的申请人的多个伺服模式的顺序信息存储介质读取的信息中的错误。 [0075] Applicants' invention further includes articles, such as, but not limited to, a tape drive, a data storage controller, automated data storage library, comprising storage management program and communication with the host data repository computing device, wherein the article comprises comprising computer readable program code computer readable medium, the computer readable program code comprising a series of computer readable program steps to effect a plurality of servo patterns encoded in a sequential applicant information storage medium or a plurality of non-data area and / or a plurality of servo pattern decoding information encoded applicant and / or use of applicant Reed - Solomon error correction code to correct from the group consisting of the storage medium in one or more non-data area Information stored sequence information encoding a plurality of servo patterns applicant medium read errors.

[0076] 申请人的发明还包括计算机程序产品,所述计算机程序产品编码在计算机可读介质中并可与计算机处理器一起使用以便在顺序信息存储介质的一个或多个非数据区域中编码申请人的多个伺服模式、和/或解码在申请人的多个伺服模式中编码的信息,和/或使用申请人的里德-所罗门纠错码来纠正从包括在所述存储介质的一个或多个非数据区域中编码的申请人的多个伺服模式的顺序信息存储介质读取的信息中的错误。 [0076] Applicants' invention further includes a computer program product, the computer program product can be used in a computer-readable encoding medium encoded with a computer processor for application in a sequential information storage medium or a plurality of non-data area a plurality of servo patterns of people, and / or a plurality of servo pattern decoding information encoded applicant and / or use of applicant Reed - Solomon error correction code to correct one from the group consisting of the storage medium or information storing sequence information encoding a plurality of non-data areas of a plurality of servo patterns applicant medium read errors.

[0077] 虽然详细示出了本发明的优选实施例,但是应显而易见的是,在不偏离如以下权利要求中提出的本发明的范围的情况下,本领域的技术人员可想到对这些实施例的修改和改变。 [0077] Although shown in detail a preferred embodiment of the present invention, it should be obvious that without departing from the scope of the following claims set forth in the case of the present invention, those skilled in the art of these embodiments are conceivable modifications and changes.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
CN1181470C15 Apr 199822 Dec 2004国际商业机器公司Timing based servo longitudinal addressing method, system and apparatus
EP1600967A223 May 200530 Nov 2005Quantum CorporationServo track having periodic frames of tone field and embedded synchronization marks
US2008049356 Title not available
US2003012318528 Dec 20013 Jul 2003Denison Edward V.Servo write head with gaps for writing high and low frequency transitions
Non-Patent Citations
Reference
1Barrett R C,ET AL.Timeing-Based Track-Following Servo for Linear Tape Systems.《IEEE TRANSACTIONGSOMMAGNETICS》.IEEE SERVICE NEW YPUK NY US,1998,第34卷(第4期),1872-1877.
Classifications
International ClassificationG11B5/584, G11B15/46, G11B20/18, G11B20/12, H03M13/09
Cooperative ClassificationG11B2220/95, G11B20/1201, G11B20/14, G11B2020/1284, G11B2020/1484, G11B2020/1281, G11B2220/93, G11B2020/1836, G11B5/584, G11B2020/1287, G11B20/1833, G11B20/1866, G11B2220/90
European ClassificationG11B5/584, G11B20/18E, G11B20/18D, G11B20/12B
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