AU2014249715B2 - Method and device for verifying a servo pattern in tape media - Google Patents
Method and device for verifying a servo pattern in tape media Download PDFInfo
- Publication number
- AU2014249715B2 AU2014249715B2 AU2014249715A AU2014249715A AU2014249715B2 AU 2014249715 B2 AU2014249715 B2 AU 2014249715B2 AU 2014249715 A AU2014249715 A AU 2014249715A AU 2014249715 A AU2014249715 A AU 2014249715A AU 2014249715 B2 AU2014249715 B2 AU 2014249715B2
- Authority
- AU
- Australia
- Prior art keywords
- servo
- servo pattern
- demodulated
- tape
- band
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 57
- 238000007619 statistical method Methods 0.000 claims description 14
- 238000012795 verification Methods 0.000 claims description 13
- 230000007547 defect Effects 0.000 description 21
- 238000013500 data storage Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000013442 quality metrics Methods 0.000 description 2
- 240000005020 Acaciella glauca Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001010 compromised effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 235000003499 redwood Nutrition 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
- G11B15/005—Programmed access in sequence to indexed parts of tracks of operating tapes, by driving or guiding the tape
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
- G11B20/1816—Testing
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B21/00—Head arrangements not specific to the method of recording or reproducing
- G11B21/02—Driving or moving of heads
- G11B21/08—Track changing or selecting during transducing operation
- G11B21/081—Access to indexed tracks or parts of continuous track
- G11B21/086—Access to indexed tracks or parts of continuous track on tapes
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B21/00—Head arrangements not specific to the method of recording or reproducing
- G11B21/02—Driving or moving of heads
- G11B21/08—Track changing or selecting during transducing operation
- G11B21/081—Access to indexed tracks or parts of continuous track
- G11B21/086—Access to indexed tracks or parts of continuous track on tapes
- G11B21/088—Access to indexed tracks or parts of continuous track on tapes with track following of accessed part
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/36—Monitoring, i.e. supervising the progress of recording or reproducing
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
- G11B5/58—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B5/584—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on tapes
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
- Moving Of The Head To Find And Align With The Track (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13/802,629 US9378764B2 (en) | 2013-03-13 | 2013-03-13 | Method and device for verifying a servo pattern in tape media |
| US13/802,629 | 2013-03-13 | ||
| PCT/US2014/020610 WO2014164110A1 (en) | 2013-03-13 | 2014-03-05 | Method and device for verifying a servo pattern in tape media |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU2014249715A1 AU2014249715A1 (en) | 2015-10-01 |
| AU2014249715B2 true AU2014249715B2 (en) | 2018-02-22 |
Family
ID=50336576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2014249715A Active AU2014249715B2 (en) | 2013-03-13 | 2014-03-05 | Method and device for verifying a servo pattern in tape media |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US9378764B2 (enExample) |
| EP (1) | EP2973562B1 (enExample) |
| JP (1) | JP6348962B2 (enExample) |
| CN (1) | CN105144291B (enExample) |
| AU (1) | AU2014249715B2 (enExample) |
| NZ (1) | NZ712892A (enExample) |
| WO (1) | WO2014164110A1 (enExample) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9640209B1 (en) * | 2016-09-20 | 2017-05-02 | International Business Machines Corporation | Generating defect signals in time based servo tape storage systems |
| US10242709B1 (en) * | 2017-12-20 | 2019-03-26 | International Business Machines Corporation | Detecting damaged areas on magnetic tape based on measuring a number of servo errors |
| JP7531425B2 (ja) * | 2021-02-26 | 2024-08-09 | 富士フイルム株式会社 | 磁気テープおよび磁気テープ収容体 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6320719B1 (en) * | 1994-06-30 | 2001-11-20 | International Business Machines Corporation | Timing based servo system for magnetic tape systems |
| US20060126207A1 (en) * | 2004-06-02 | 2006-06-15 | Imation Corp. | Dual mode servo pattern |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0766640B2 (ja) | 1985-12-13 | 1995-07-19 | 株式会社日立製作所 | サ−ボパタ−ン書込方法 |
| US6031673A (en) | 1998-03-04 | 2000-02-29 | Hewlett-Packard Company | Servo band verification in linear tape systems having timing-based servo formats |
| JP3919372B2 (ja) * | 1999-02-22 | 2007-05-23 | 富士フイルム株式会社 | サーボ信号ベリファイ装置 |
| JP2001266321A (ja) * | 2000-03-16 | 2001-09-28 | Otari Kk | テープのサーボパターンの検証装置 |
| JP2003006826A (ja) | 2001-06-27 | 2003-01-10 | Fuji Photo Film Co Ltd | サーボ信号検査装置 |
| US6738210B1 (en) | 2001-07-16 | 2004-05-18 | Imation Corp. | Amplitude detection for full band servo verification |
| DE10156182A1 (de) | 2001-11-15 | 2003-05-28 | Philips Corp Intellectual Pty | Kathodenstrahlröhre mit Korrektursystem für die Position des Elektronenstrahls |
| JP2004145949A (ja) * | 2002-10-23 | 2004-05-20 | Fuji Photo Film Co Ltd | サーボ信号検査装置 |
| US7196859B2 (en) * | 2004-07-09 | 2007-03-27 | Imation Corp. | Processing techniques for time-based servo patterns |
| US7369342B2 (en) * | 2005-11-22 | 2008-05-06 | International Business Machines Corporation | Peak detection for magnetic tape timing based servo |
-
2013
- 2013-03-13 US US13/802,629 patent/US9378764B2/en active Active
-
2014
- 2014-03-05 JP JP2016500643A patent/JP6348962B2/ja active Active
- 2014-03-05 NZ NZ712892A patent/NZ712892A/en unknown
- 2014-03-05 CN CN201480022800.1A patent/CN105144291B/zh active Active
- 2014-03-05 AU AU2014249715A patent/AU2014249715B2/en active Active
- 2014-03-05 WO PCT/US2014/020610 patent/WO2014164110A1/en not_active Ceased
- 2014-03-05 EP EP14711418.5A patent/EP2973562B1/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6320719B1 (en) * | 1994-06-30 | 2001-11-20 | International Business Machines Corporation | Timing based servo system for magnetic tape systems |
| US20060126207A1 (en) * | 2004-06-02 | 2006-06-15 | Imation Corp. | Dual mode servo pattern |
Also Published As
| Publication number | Publication date |
|---|---|
| HK1218346A1 (zh) | 2017-02-10 |
| JP2016510934A (ja) | 2016-04-11 |
| AU2014249715A1 (en) | 2015-10-01 |
| NZ712892A (en) | 2018-08-31 |
| US9378764B2 (en) | 2016-06-28 |
| JP6348962B2 (ja) | 2018-06-27 |
| CN105144291A (zh) | 2015-12-09 |
| US20140269242A1 (en) | 2014-09-18 |
| CN105144291B (zh) | 2018-06-05 |
| WO2014164110A1 (en) | 2014-10-09 |
| EP2973562B1 (en) | 2018-04-25 |
| EP2973562A1 (en) | 2016-01-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FGA | Letters patent sealed or granted (standard patent) |